1
|
Shrestha G, Rondon SI. Host plant preference of Lygus hesperus (Hemiptera: Miridae) in 4 field crops: potato, alfalfa, carrot, and pea. Environ Entomol 2024; 53:288-292. [PMID: 38431884 DOI: 10.1093/ee/nvae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/04/2023] [Accepted: 02/01/2024] [Indexed: 03/05/2024]
Abstract
The western tarnished plant bug, Lygus hesperus (Knight), has emerged as a pest of potatoes (Solanum tuberosum L.) in the Lower Columbia Basin of Oregon and Washington. This species is generally found infesting several other field-grown crops in the region; however, their host preference is poorly understood. Thus, greenhouse cage experiments were conducted to evaluate L. hesperus host preference by simultaneously presenting adults with 4 host plants: potato, alfalfa, Medicago sativa L., carrot, Daucus carota L., and pea, Pisum sativum L. In addition, an oviposition test was conducted. The results indicated that L. hesperus actively chose as a host and as an oviposition substrate among the 4 host plants. We found a significantly higher number of adults on alfalfa and potato plants over carrot or pea plants at 6 h, 24 h, and 48 h after adults were released into the cage. However, 96 h after release, more L. hesperus were found in alfalfa. In addition, female L. hesperus strongly preferred potato and alfalfa plants as an oviposition substrate over carrot and pea plants at 96 h after release.
Collapse
Affiliation(s)
- Govinda Shrestha
- Southern Oregon Research and Extension Center, Oregon State University, Central Point, OR 97502, USA
| | - Silvia I Rondon
- Southern Oregon Research and Extension Center, Oregon State University, Central Point, OR 97502, USA
- Oregon Integrated Pest Management Center, Crop and Soil Sciences, Oregon State University, Corvallis, OR 97330, USA
| |
Collapse
|
2
|
Liu Y, Zhang F, Hassan A, Zhou X, Huang Q. Accessory gland protein regulates pairing process and oviposition in the subterranean termite Reticulitermes chinensis after swarming. Insect Sci 2024. [PMID: 38576063 DOI: 10.1111/1744-7917.13360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 02/29/2024] [Accepted: 03/03/2024] [Indexed: 04/06/2024]
Abstract
Swarming and pairing behaviors are significant to population dispersal of termites. Tandem running is a key process in pairing behavior of dealates to find a mate. Succinylation can lead to significant changes in protein structure and function, which is widely involved in metabolism and behavior regulation in many organisms. However, whether succinylation modification regulates termites' tandem running is currently unknown. In this research, we performed quantitative modified proteomics of the subterranean termite Reticulitermes chinensis Snyder before and after alate swarming. The succinylation levels of accessory gland protein (ACP) were significantly altered after alate swarming. We found that ACP is enriched in male accessory gland and female oocytes of termites. The acetylation and succinylation sites of ACP affected tandem running of dealates. The transcriptome and metabolome analyses of alates injected with ACP and its mutant proteins showed that β-alanine metabolism pathway was the major downstream pathway of ACP. Silencing the significantly differentially expressed genes in the β-alanine metabolic pathway (acyl-CoA dehydrogenase, enoyl-CoA hydratase, 3-hydroxyisobutyrate dehydrogenase, methylmalonate-semialdehyde dehydrogenase) suppressed tandem running and altered oviposition of paired dealates. These findings demonstrate that protein translation modification is an important regulator of tandem running behavior of termites, which implies that the succinylation and acetylation modification sites of ACP could be potential targets for insecticide action. Our research offers a potential approach for developing novel dispersal inhibitors against social insect pests.
Collapse
Affiliation(s)
- Yutong Liu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Fei Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Ali Hassan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY, USA
| | - Qiuying Huang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, China
| |
Collapse
|
3
|
Gong LL, Zhang MQ, Ma YF, Feng HY, Zhao YQ, Zhou YY, He M, Smagghe G, He P. RNAi of yellow-y, required for normal cuticle pigmentation, impairs courtship behavior and oviposition in the German cockroach (Blattella germanica). Arch Insect Biochem Physiol 2024; 115:e22114. [PMID: 38659314 DOI: 10.1002/arch.22114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024]
Abstract
The insect cuticle plays a key role in maintaining the insect's physiological function and behavior. Herein, the yellow-y protein is required to produce black melanin, and is expressed in a pattern that correlates with the distribution of this pigment. However, yellow-y can also have other functions, for instance, in insect behavior, but not much is known. In this study, we have studied the yellow-y gene in one important model and pest species, namely the German cockroach (Blattella germanica), which is to our knowledge the first time reported. In essence, we identified the yellow-y gene (BgY-y) and characterized its function by using RNA interference (RNAi). Silencing of BgY-y gene led to different developmental abnormalities (body weight and wings) in both genders. Specifically, there was an abundant decrease in melanin, turning the body color in pale yellow and the cuticle softer and more transparent. Interestingly, we also observed that the knockdown of BgY-y impaired the male cockroaches to display a weaker response to female-emitted contact sex pheromones, and also that the oviposition ability was weakened in the RNAi females. This study comprehensively analyzed the biological functions of the yellow-y gene in German cockroaches from the perspectives of development, body color, courtship behavior and oviposition, and as a consequence, this may opens new avenues to explore it as a novel pest control gene.
Collapse
Affiliation(s)
- Lang-Lang Gong
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Meng-Qi Zhang
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Yun-Feng Ma
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Hong-Yan Feng
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Ya-Qin Zhao
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Yang-Yuntao Zhou
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Ming He
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Guy Smagghe
- Institute Entomology, Guizhou University, Guiyang, China
- Department of Plants and Crops, Ghent University, Ghent, Belgium
| | - Peng He
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| |
Collapse
|
4
|
Xiao L, Gheysen G, Yang M, Xiao X, Xu L, Guo X, Yang L, Liu W, He Y, Peng D, Peng H, Ma K, Long H, Wang G, Xiao Y. Brown planthopper infestation on rice reduces plant susceptibility to Meloidogyne graminicola by reducing root sugar allocation. New Phytol 2024; 242:262-277. [PMID: 38332248 DOI: 10.1111/nph.19570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/16/2024] [Indexed: 02/10/2024]
Abstract
Plants are simultaneously attacked by different pests that rely on sugars uptake from plants. An understanding of the role of plant sugar allocation in these multipartite interactions is limited. Here, we characterized the expression patterns of sucrose transporter genes and evaluated the impact of targeted transporter gene mutants and brown planthopper (BPH) phloem-feeding and oviposition on root sugar allocation and BPH-reduced rice susceptibility to Meloidogyne graminicola. We found that the sugar transporter genes OsSUT1 and OsSUT2 are induced at BPH oviposition sites. OsSUT2 mutants showed a higher resistance to gravid BPH than to nymph BPH, and this was correlated with callose deposition, as reflected in a different effect on M. graminicola infection. BPH phloem-feeding caused inhibition of callose deposition that was counteracted by BPH oviposition. Meanwhile, this pivotal role of sugar allocation in BPH-reduced rice susceptibility to M. graminicola was validated on rice cultivar RHT harbouring BPH resistance genes Bph3 and Bph17. In conclusion, we demonstrated that rice susceptibility to M. graminicola is regulated by BPH phloem-feeding and oviposition on rice through differences in plant sugar allocation.
Collapse
Affiliation(s)
- Liying Xiao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Godelieve Gheysen
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Proeftuinstraat 86, Ghent, 9000, Belgium
| | - Mingwei Yang
- Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xueqiong Xiao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lihe Xu
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaoli Guo
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lijie Yang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wen Liu
- Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yueping He
- Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Deliang Peng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - Huan Peng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - Kangsheng Ma
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Haibo Long
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Gaofeng Wang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yannong Xiao
- Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China
| |
Collapse
|
5
|
Rohrbach EW, Knapp EM, Deshpande SA, Krantz DE. Expression and potential regulatory functions of Drosophila octopamine receptors in the female reproductive tract. G3 (Bethesda) 2024; 14:jkae012. [PMID: 38244217 PMCID: PMC10917510 DOI: 10.1093/g3journal/jkae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/02/2023] [Accepted: 01/11/2024] [Indexed: 01/22/2024]
Abstract
Aminergic signaling is known to play a critical role in regulating female reproductive processes in both mammals and insects. In Drosophila, the ortholog of noradrenaline, octopamine, is required for ovulation as well as several other female reproductive processes. Two octopamine receptors have already been shown to be expressed in the Drosophila reproductive tract and to be required for egg-laying: OAMB and Octβ2R. The Drosophila genome contains 4 additional octopamine receptors-Octα2R, Octβ1R, Octβ3R, and Oct-TyrR-but their cellular patterns of expression in the reproductive tract and potential contribution(s) to egg-laying are not known. In addition, the mechanisms by which OAMB and Octβ2R regulate reproduction are incompletely understood. Using a panel of MiMIC Gal4 lines, we show that Octα2R, Octβ1R, Octβ3R, and Oct-TyrR receptors are not detectable in either epithelium or muscle but are clearly expressed in neurons within the female fly reproductive tract. Optogenetic activation of neurons that express at least 3 types of octopamine receptors stimulates contractions in the lateral oviduct. We also find that octopamine stimulates calcium transients in the sperm storage organs and that its effects in spermathecal, secretory cells, can be blocked by knock-down of OAMB. These data extend our understanding of the pathways by which octopamine regulates egg-laying in Drosophila and raise the possibility that multiple octopamine receptor subtypes could play a role in this process.
Collapse
Affiliation(s)
- Ethan W Rohrbach
- Interdepartmental Program in Neuroscience, Brain Research Institute, Gonda (Goldschmied) Neuroscience and Genetics Research Center, UCLA, Los Angeles, CA 90095, USA
| | - Elizabeth M Knapp
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Sonali A Deshpande
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - David E Krantz
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| |
Collapse
|
6
|
Dixon D, Bibbs CS, Autry DL, Banfield M, Xue RDE. Evaluation of Modified Autocidal Gravid Ovitraps for Control of Aedes Aegypti in St. Augustine, Florida. J Am Mosq Control Assoc 2024; 40:11-19. [PMID: 38323640 DOI: 10.2987/23-7156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Aedes aegypti is an anthropophilic mosquito that vectors dengue, chikungunya, Zika, and yellow fever viruses. The US Center for Disease Control and Prevention (CDC)'s autocidal gravid ovitraps (AGOs) may facilitate the control of container-inhabiting Aedes mosquitoes and curb arbovirus outbreaks by taking advantage of oviposition-seeking behavior using pesticide-free technology. The AGOs, manufactured by SpringStar Inc., were tested during the summer of 2018 in St. Augustine, FL. A total of 1,718 AGOs were deployed for study in 3 different 40-acre (∼18.2 ha) plots at a density of 5-7 AGOs per house and a coverage of >90% for all AGO test sites. The AGOs were modified using tap water instead of infusion water to reduce the capture of nontarget organisms. Each intervention and reference area was monitored weekly using BioGents Sentinel traps and Sentinel AGOs. Generalized linear mixed models showed that changes to Aedes mosquito populations were more seasonal than treatment driven. Homeowners expressed positivity about traps and believed the traps were both effective and had directly contributed to increased quality of life.
Collapse
|
7
|
Li XL, Li DD, Cai XY, Cheng DF, Lu YY. Reproductive behavior of fruit flies: courtship, mating, and oviposition. Pest Manag Sci 2024; 80:935-952. [PMID: 37794312 DOI: 10.1002/ps.7816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/09/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
Many species of the Tephritidae family are invasive and cause huge damage to agriculture and horticulture, owing to their reproductive characteristics. In this review, we have summarized the existing studies on the reproductive behavior of Tephritidae, particularly those regarding the genes and external factors that are associated with courtship, mating, and oviposition. Furthermore, we outline the issues that still need to be addressed in fruit fly reproduction research. The review highlights the implications for understanding the reproductive behavior of fruit flies and discusses methods for their integrated management and biological control. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Xin-Lian Li
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Dou-Dou Li
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Xin-Yan Cai
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Dai-Feng Cheng
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Yong-Yue Lu
- Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou, China
| |
Collapse
|
8
|
Shteindel N, Gerchman Y, Silberbush A. Fish microbiota repel ovipositing mosquitoes. J Anim Ecol 2024. [PMID: 38420662 DOI: 10.1111/1365-2656.14068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 02/06/2024] [Indexed: 03/02/2024]
Abstract
The mere presence of predators causes prey organisms to display predation-avoidance strategies. Predator presence is often communicated through predator-released chemical signals. Ovipositing female mosquitoes of several species are repelled by unknown signals released from larvivorous fish. It was previously suggested that in many cases, a predator's microbiota plays an important role in the release of these signals; however, this mechanism is still poorly understood. In this study, we looked into the effects of the microbiota originating from the larvivorous Gambusia affinis (Baird and Girard) on the oviposition behaviour of gravid female mosquitoes. We used fish with altered microbiota and bacterial isolates in a set of outdoor mesocosm experiments to address this aim. We show that interference with the fish microbiota significantly reduces fish's repellent effect. We further show that the bacterium Pantoea pleuroti, isolated from the skin of the fish, repels oviposition of Culex laticinctus Edwards and Culiseta longiareolata Macquart mosquitoes similarly to the way in which live fish repel them. Our results highlight the importance of bacteria in the interspecies interactions of their hosts. Furthermore, this finding may lead to the development of an ecologically friendly mosquito repellent, that may reduce the use of larvivorous fish for mosquito control.
Collapse
Affiliation(s)
| | - Yoram Gerchman
- Faculty of Natural Sciences, University of Haifa, Haifa, Israel
- Oranim Academic College, Kiryat Tiv'on, Israel
| | - Alon Silberbush
- Faculty of Natural Sciences, University of Haifa, Haifa, Israel
- Oranim Academic College, Kiryat Tiv'on, Israel
| |
Collapse
|
9
|
Walsh W, Duffner M, Pasternak A, Brodie BS, Johnson KS. Influence of polarized light, disruptive visual patterns, and chemical cues on oviposition in the aquatic midge, Chironomus riparius (Diptera: Chironomidae). Environ Entomol 2024; 53:57-66. [PMID: 38156653 DOI: 10.1093/ee/nvad116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/06/2023] [Accepted: 11/25/2023] [Indexed: 01/03/2024]
Abstract
Chironomid nonbiting midges are common in many waterbodies, occurring at high densities in sediment and also when flying adults emerge. Although important for food webs and ecosystem processes, the mass emergences of chironomid adults make some species nuisance pests. As part of an effort to develop "push-pull" strategies for managing midge populations, we investigated the importance of visual and chemical cues used by gravid females when selecting sites for oviposition. Field and laboratory oviposition choice tests with Chironomus riparius (Meigen) were used to assess the attractiveness of dark container colors and polarized light for females seeking water for egg laying. Females were not sensitive to increased intensity of polarized light, but they laid fewer eggs in containers with white color above the water's edge but black below the surface. A disruptive pattern of vertical black and white stripes at the water's edge reduced egg laying to a similar degree as white. To investigate the importance of olfactory or gustatory cues in oviposition decisions, we tested 3 potential chemical repellents (damaged larvae simulating predator presence, azadiractin, and picaridin) and 5 potential attractants (a tannin-molasses mixture, leaf detritus, live Hydrilla plants, periphyton, and fermented alfalfa infusions used to bait mosquito oviposition traps). Chemical cues appeared to play a weak role, if any, in oviposition choices. Onlyazadiractin (0.02 and 0.11 ppm) reduced the number of egg ropes deposited, but the mechanism may have been from mechanical trapping and drowning, not deterrence.
Collapse
Affiliation(s)
- Wesley Walsh
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
| | - Mitch Duffner
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
| | - Anna Pasternak
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
- Department of Entomology, University of Kentucky, Lexington, KY 40546-0091, USA
| | - Bekka S Brodie
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
- Ecology, Evolution and Environmental Biology, Columbia University, New York, NY, USA
| | - Kelly S Johnson
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
| |
Collapse
|
10
|
McKay SA, McKay CJ, Bibbs CS, Bloomquist JR, Kaufman PE. Fecundity decline is male derived following transfluthrin exposures in a field strain of Aedes albopictus (Diptera: Culicidae). J Med Entomol 2024:tjae022. [PMID: 38366896 DOI: 10.1093/jme/tjae022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/18/2024]
Abstract
Volatile pyrethroids are effective in reducing mosquito populations and repelling vectors away from hosts. However, many gaps in knowledge exist for the sublethal impacts of volatile pyrethroids on mosquitoes. To that end, transfluthrin exposures were conducted on a field strain of Aedes albopictus (Skuse) held as a laboratory colony. Dose-response analysis was conducted on both sexes at either 1-4 days old or 5-10 days old. Resultant concentration data were used to evaluate the LC20 and LC50 values in various mate pairings of treatments and controls in which either the male or female was from a selectively treated group and mated with a counterpart that was treated independently. Blood feeding proportion, delayed mortality after a 24-h recovery period, egg collection totals, and F1 larval survival were determined following transfluthrin treatment in the F0, but outcomes were not significant. In contrast, sterility was predicated on male treatment, with treated females resulting in higher overall egg viability. Treated males in the mating pair resulted in significantly lower egg viability and accelerated larval hatch in the F1. Additionally, the presence of sperm in female spermathecae was significantly diminished in test groups containing treated male mosquitoes. Male sublethal effects may be a critical determinant of a mixed population's reproductive success.
Collapse
Affiliation(s)
- Sean A McKay
- Entomology and Nematology Department, University of Florida, 1881 Natural Area Drive, Gainesville, FL, USA
| | - Conner J McKay
- Entomology and Nematology Department, University of Florida, 1881 Natural Area Drive, Gainesville, FL, USA
| | - Christopher S Bibbs
- Salt Lake City Mosquito Abatement District, 2215 North 2200 West, Salt Lake City, UT, USA
| | - Jeffrey R Bloomquist
- Entomology and Nematology Department, University of Florida, 1881 Natural Area Drive, Gainesville, FL, USA
| | - Phillip E Kaufman
- Entomology and Nematology Department, University of Florida, 1881 Natural Area Drive, Gainesville, FL, USA
- Department of Entomology, Texas A&M University, 2475 Heep Center, College Station, TX, USA
| |
Collapse
|
11
|
Dixon D, Bibbs CS, Autry DL, Banfield M, Xue RDE. EVALUTION OF MODIFIED AUTOCIDAL GRAVID OVITRAPS FOR CONTROL OF AEDES AEGYPTI IN ST. AUGUSTINE, FLORIDA. J Am Mosq Control Assoc 2024:498786. [PMID: 38299225 DOI: 10.1111/23-7156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Aedes aegypti is an anthropophilic mosquito that vectors dengue, chikungunya, Zika, and yellow fever viruses. The US Center for Disease Control and Prevention (CDC)'s autocidal gravid ovitraps (AGOs) may facilitate the control of container-inhabiting Aedes mosquitoes and curb arbovirus outbreaks by taking advantage of oviposition-seeking behavior using pesticide-free technology. The AGOs, manufactured by SpringStar Inc., were tested during the summer of 2018 in St. Augustine, FL. A total of 1,718 AGOs were deployed for study in 3 different 40-acre (∼18.2 ha) plots at a density of 5-7 AGOs per house and a coverage of >90% for all AGO test sites. The AGOs were modified using tap water instead of infusion water to reduce the capture of nontarget organisms. Each intervention and reference area was monitored weekly using BioGents Sentinel traps and Sentinel AGOs. Generalized linear mixed models showed that changes to Aedes mosquito populations were more seasonal than treatment driven. Homeowners expressed positivity about traps and believed the traps were both effective and had directly contributed to increased quality of life.
Collapse
|
12
|
Schuh E, Cassau S, Ismaieel AR, Stieber R, Krieger J, Hansson BS, Sachse S, Bisch-Knaden S. Females smell differently: characteristics and significance of the most common olfactory sensilla of female silkmoths. Proc Biol Sci 2024; 291:20232578. [PMID: 38228178 DOI: 10.1098/rspb.2023.2578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 12/13/2023] [Indexed: 01/18/2024] Open
Abstract
In the silkmoth Bombyx mori, the role of male sensilla trichodea in pheromone detection is well established. Here we study the corresponding female sensilla, which contain two olfactory sensory neurons (OSNs) and come in two lengths, each representing a single physiological type. Only OSNs in medium trichoids respond to the scent of mulberry, the silkworm's exclusive host plant, and are more sensitive in mated females, suggesting a role in oviposition. In long trichoids, one OSN is tuned to (+)-linalool and the other to benzaldehyde and isovaleric acid, both odours emitted by silkworm faeces. While the significance of (+)-linalool detection remains unclear, isovaleric acid repels mated females and may therefore play a role in avoiding crowded oviposition sites. When we examined the underlying molecular components of neurons in female trichoids, we found non-canonical co-expression of Ir8a, the co-receptor for acid responses, and ORco, the co-receptor of odorant receptors, in long trichoids, and the unexpected expression of a specific odorant receptor in both trichoid sensillum types. In addition to elucidating the function of female trichoids, our results suggest that some accepted organizational principles of the insect olfactory system may not apply to the predominant sensilla on the antenna of female B. mori.
Collapse
Affiliation(s)
- Elisa Schuh
- Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
- Research Group Olfactory Coding, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
| | - Sina Cassau
- Institute of Biology/Zoology, Department of Animal Physiology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany
| | - Ahmed R Ismaieel
- Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
- Entomology Department, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Regina Stieber
- Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
| | - Jürgen Krieger
- Institute of Biology/Zoology, Department of Animal Physiology, Martin Luther University Halle-Wittenberg, Hoher Weg 8, 06120 Halle (Saale), Germany
| | - Bill S Hansson
- Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
| | - Silke Sachse
- Research Group Olfactory Coding, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
| | - Sonja Bisch-Knaden
- Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Straße 8, 07745 Jena, Germany
| |
Collapse
|
13
|
Edison A, Michelbach A, Sowade D, Kertzel H, Schmidt L, Schäfer M, Lysander M, Nauen R, Duchen P, Xu S. Evidence of active oviposition avoidance to systemically applied imidacloprid in the Colorado potato beetle. Insect Sci 2024. [PMID: 38282249 DOI: 10.1111/1744-7917.13319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 11/08/2023] [Accepted: 12/07/2023] [Indexed: 01/30/2024]
Abstract
Agricultural pests can develop behavioral resistance to insecticides by choosing to feed or oviposit on insecticide-free hosts. As young larvae have relatively low mobility, oviposition preferences from female adults may play a critical role in shaping the evolutionary trajectory of pest populations. While oviposition avoidance of insecticide-treated hosts was found in different agriculture pests, it remains unclear whether female adults actively choose to occupy insecticide-free hosts. To address this question, we investigated feeding and oviposition preferences between imidacloprid-treated and imidacloprid-free plants in the Colorado potato beetle, Leptinotarsa decemlineata Say, a major potato pest. We performed behavioral choice assays on two strains that differed in both fecundity and insecticide resistance. We found that one strain preferred to feed on the insecticide-free plants and that this preference is not innate. Meanwhile, the other strain chose plants for feeding and oviposition randomly. Further analyses of the moving patterns of the beetles suggested that the oviposition preference in the first strain is likely due to active learning.
Collapse
Affiliation(s)
- Alitha Edison
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Anja Michelbach
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Current address: Department of Cell and Tissue Dynamics, Münster, Germany
| | - Dominique Sowade
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
| | - Hanna Kertzel
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Luise Schmidt
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
| | - Martin Schäfer
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Maximillian Lysander
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Ralf Nauen
- Crop Science Division, Research and Development Department, Bayer AG, Monheim, Germany
| | - Pablo Duchen
- Institute for Evolution and Biodiversity, University of Münster, Hüfferstraße 1, Münster, 48149, Germany
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| | - Shuqing Xu
- Institute of Organismic and Molecular Evolution (iomE), University of Mainz, Hanns-Dieter-Hüsch-Weg 15, Mainz, 55128, Germany
| |
Collapse
|
14
|
Zhang X, Liu Y, Guo M, Sun D, Zhang M, Chu X, Berg BG, Wang G. A female-specific odorant receptor mediates oviposition deterrence in the moth Helicoverpa armigera. Curr Biol 2024; 34:1-11.e4. [PMID: 38091990 DOI: 10.1016/j.cub.2023.11.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/14/2023] [Accepted: 11/10/2023] [Indexed: 01/11/2024]
Abstract
Finding ideal oviposition sites is a task of vital importance for all female insects. To ensure optimal conditions for their progeny, females of herbivorous insects detect not only the odors of a relevant host plant but also chemicals released by eggs, named oviposition-deterring pheromones (ODPs). It is reported that such chemicals play critical roles in suppressing female oviposition behavior; however, the molecular mechanism underlying the detection of egg-derived ODPs remains elusive. Here, we have identified three specific fatty acid methyl esters from the surface of eggs of Helicoverpa armigera serving as ODPs-methyl oleate (C18:1ME), methyl palmitate (C16:0ME), and methyl stearate (C18:0ME). We demonstrated that these ODPs are detected by the receptor, HarmOR56, exclusively expressed in sensilla trichodea on female antennae. To assess the significance of this receptor, we disrupted HarmOR56 in H. armigera using CRISPR-Cas9 and found that mutant females did not respond to the ODPs, neither in behavioral nor in electrophysiological tests. We therefore conclude that HarmOR56 is indispensable for identifying the ODPs. This study explores, for the first time, how a female-specific odorant receptor detects chemicals from conspecific eggs. Our data elucidate the intriguing biological phenomenon of repulsion to conspecific eggs during oviposition and contribute new insight into a female-specific olfactory pathway linked to reproduction.
Collapse
Affiliation(s)
- Xiaxuan Zhang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Synthetic Biology Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Mengbo Guo
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Synthetic Biology Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Dongdong Sun
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Mengjun Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xi Chu
- Chemosensory lab, Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Bente Gunnveig Berg
- Chemosensory lab, Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Guirong Wang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Synthetic Biology Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| |
Collapse
|
15
|
Vuts J, Powers SJ, Venter E, Szentesi Á. A semiochemical view of the ecology of the seed beetle Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae, Bruchinae). Ann Appl Biol 2024; 184:19-36. [PMID: 38516560 PMCID: PMC10953445 DOI: 10.1111/aab.12862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/01/2023] [Accepted: 08/14/2023] [Indexed: 03/23/2024]
Abstract
The dried bean beetle, Acanthoscelides obtectus, is an economically important pest of stored legumes worldwide. Tracking the human-aided dispersion of its primary hosts, the Phaseolus vulgaris beans, it is now widespread in most bean-growing areas of the tropics and subtropics. In temperate regions where it can only occasionally overwinter in the field, A. obtectus proliferates in granaries, having multiple generations a year. Despite its negative impact on food production, no sensitive detection or monitoring tools exist, and the reduction of local populations still relies primarily on inorganic insecticides as fumigating agents. However, in the quest to produce more nutritious food more sustainably and healthily, the development of environmentally benign crop protection methods is vital against A. obtectus. For this, knowledge of the biology and chemistry of both the host plant and its herbivore will underpin the development of, among others, chemical ecology-based approaches to form an essential part of the toolkit of integrated bruchid management. We review the semiochemistry of the mate- and host-finding behaviour of A. obtectus and provide new information about the effect of seed chemistry on the sensory and behavioural ecology of host acceptance and larval development.
Collapse
Affiliation(s)
- József Vuts
- Protecting Crops and the Environment DepartmentRothamsted ResearchHarpendenUK
| | | | - Eudri Venter
- Rothamsted BioimagingRothamsted ResearchHarpendenUK
- JEOL UKWelwyn Garden CityUK
| | - Árpád Szentesi
- Department of Systematic Zoology and EcologyEötvös Loránd UniversityBudapestHungary
| |
Collapse
|
16
|
Chen C, He XZ, Zhou P, Wang Q. Parasitoid-host interaction behaviors in relation to host stages in the Tamarixia triozae (Hymenoptera: Eulophidae)-Bactericera cockerelli (Hemiptera: Triozidae) system. J Insect Sci 2024; 24:15. [PMID: 38402604 PMCID: PMC10894652 DOI: 10.1093/jisesa/ieae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 01/03/2024] [Accepted: 01/31/2024] [Indexed: 02/27/2024]
Abstract
Females of host-feeding parasitic wasps often partition hosts of different stages for feeding and parasitization, but the underlying behavioral mechanisms are largely unknown, making it difficult to evaluate parasitoid-host interactions and their effects on biological control success. Tamarixia triozae (Burks) is an ectoparasitoid of tomato-potato psyllid Bactericera cockerelli (Šulc), which utilizes nymphs and kills them both by parasitization and host feeding. In this study, we exposed female wasps to 1st- to 5th-instar psyllid nymphs simultaneously and made 13-h continuous video recording of parasitoid-host interactions. We then quantified host stage-dependent handling time for feeding and oviposition and behaviors of parasitoid attacks and host defenses from encountering to successful feeding and oviposition. Female wasps were more likely to encounter and evaluate older hosts. However, the encounter and evaluation did not necessarily result in the success of feeding and oviposition. Our findings suggest that (i) T. triozae continues to assess the host using its ovipositor after the evaluation phase, (ii) females prefer the mid-aged hosts for feeding piercing and feeding and the later instars for oviposition probing and oviposition, (iii) the combination of stage-specific host nutrition value, integument thickness and defense behavior determines the success of feeding attacks, and (iv) the optimal host resource for parasitoid offspring fitness defines host stage selection for oviposition. This study contributes to our understanding of parasitoid-host interactions and mechanisms behind host stage selections.
Collapse
Affiliation(s)
- Chen Chen
- School of Life Sciences, Anhui Key Laboratory of Biodiversity Research and Ecological Protection in Southwest Anhui Province, Anqing Normal University, Anqing 246133, China
| | - Xiong Z He
- School of Agriculture and Environment, Massey University, Palmerston North 11222, New Zealand
| | - Peng Zhou
- School of Life Sciences, Anhui Key Laboratory of Biodiversity Research and Ecological Protection in Southwest Anhui Province, Anqing Normal University, Anqing 246133, China
| | - Qiao Wang
- School of Agriculture and Environment, Massey University, Palmerston North 11222, New Zealand
| |
Collapse
|
17
|
Angiolani‐Larrea FN, Jindiachi L, Tinajero‐Romero JG, Valencia‐Aguilar A, Garrido‐Priego M, Culebras J, Ringler E. Egg burying behaviour in Pristimantis highlights the link between direct development and specialised parental care. Ecol Evol 2023; 13:e10808. [PMID: 38099135 PMCID: PMC10719609 DOI: 10.1002/ece3.10808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/18/2023] [Accepted: 11/23/2023] [Indexed: 12/17/2023] Open
Abstract
One of the most extreme adaptations to terrestriality in anurans is direct development, where eggs from terrestrial clutches entirely circumvent an aquatic tadpole stage and directly develop into small froglets. We here report the first case of egg-burying behaviour in a neotropical direct-developing frog with subsequent short-term maternal care. An amplectant pair of Pristimantis chocoensis was found at the Reserva Canandé in Esmeraldas, Ecuador, and we recorded oviposition and the later rotation and active burying of the clutch by the female. Both parents remained close to the nest area the following day. This rare observation sheds light on the complex but often cryptic reproductive behaviours of terrestrial amphibians and suggests that the evolution of direct development has selected for highly specialized forms of parental care.
Collapse
Affiliation(s)
| | - Lelis Jindiachi
- Division of Behavioural Ecology, Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
- Pueblo Shuar ArutamFederacion Interprovincial Centros Shuar (FICSH)SucúaEcuador
| | - José Gabriel Tinajero‐Romero
- Division of Behavioural Ecology, Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
- Present address:
Escuela de BiologiaUniversidad de Costa RicaSan JoséCosta Rica
| | - Anyelet Valencia‐Aguilar
- Division of Behavioural Ecology, Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
| | - Marina Garrido‐Priego
- Division of Behavioural Ecology, Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
| | - Jaime Culebras
- Photo Wildlife ToursQuitoEcuador
- Fundación Cóndor AndinoQuitoEcuador
| | - Eva Ringler
- Division of Behavioural Ecology, Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
| |
Collapse
|
18
|
Lukindu M, Mukwaya LG, Masembe C, Birungi J. Behavioral Changes of Some Arboviral Vectors in Zika Forest: A Concern for Emerging and Re-Emerging Diseases in Uganda. Vector Borne Zoonotic Dis 2023; 23:653-661. [PMID: 37669008 DOI: 10.1089/vbz.2023.0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023] Open
Abstract
Background: The increasing reports on emerging/re-emerging arboviral disease outbreaks or epidemics in Sub-Saharan Africa have been impacted by factors, including the changing climate plus human activities that have resulted in land cover changes. These factors influence the prevalence, incidence, behavior, and distribution of vectors and vector-borne diseases. In this study, we assessed the potential effect of land cover changes on the distribution and oviposition behavior of some arboviral vectors in Zika forest, Uganda, which has decreased by an estimated 7 hectares since 1952 due to an increase in anthropogenic activities in the forest and its periphery. Materials and Methods: Immature mosquitoes were collected using bamboo pots and placed at various levels of a steel tower in the forest and at different intervals from the forest periphery to areas among human dwellings. Collections were conducted for 20 months. Results and Conclusion: Inside the forest, 22,280 mosquitoes were collected belonging to four arboviral vectors: Aedes aegypti, Aedes africanus, Aedes apicoargenteus, and Aedes cumminsii. When compared with similar studies conducted in the forest in 1964, there was a change from a sylvatic to a tendency of peridomestic behavior in A. africanus, which was now collected among human dwellings. There was an unexpected change in the distribution of A. aegypti, which was not only collected outside the forest as in previous reports but also collected in the forest. Conversely, A. cumminsii originally collected in the forest expanded its ranges with collections outside the forest in this study. Aedes simpsoni maintained its distribution range outside the forest among agricultural sites. We suspect that land cover changes were favorable to most of the arboviral vectors hence enhancing their proliferation and habitat range. This potentially increases the transmission of arboviral diseases in the area, hence impacting the epidemiology of emerging/remerging diseases in Uganda.
Collapse
Affiliation(s)
- Martin Lukindu
- Department of Entomology, Uganda Virus Research Institute, Entebbe, Uganda
| | - Louis G Mukwaya
- Department of Entomology, Uganda Virus Research Institute, Entebbe, Uganda
| | - Charles Masembe
- Department of Zoology, Entomology and Fisheries Science, College of Natural Sciences School, Makerere University, Kampala, Uganda
| | - Josephine Birungi
- Department of Entomology, Uganda Virus Research Institute, Entebbe, Uganda
- International Livestock Research Institute, Nairobi, Kenya
| |
Collapse
|
19
|
Fitzgerald J, Livdahl T. Vertical habitat stratification in Aedes triseriatus and Aedes hendersoni (Diptera: Culicidae): complications associated with sloped and flood-prone landscapes. J Vector Ecol 2023; 48:113-123. [PMID: 37843453 DOI: 10.52707/1081-1710-48.2.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/03/2023] [Indexed: 10/17/2023]
Abstract
For the sibling mosquito species Aedes triseriatus Say and Ae. hendersoni Cockerell, success of offspring is highly dependent on oviposition site selection by gravid females, and the dynamics of that selection process have been the subject of much investigation. Patterns of vertical oviposition stratification were examined in this study by placing basal and canopy level oviposition traps in relatively steep and flat terrains, as well as in flood-prone riverbank vs upland settings. Strong stratification existed in both steep and flat terrains, with Ae. triseriatus favoring basal ovitraps and Ae. hendersoni favoring canopy ovitraps. Contrary to expectations, Ae. hendersoni displayed even more marked preference for canopy ovitraps in steeper terrain. Both species avoided basal ovitraps in flood-prone locations, where Ae. triseriatus oviposited only in canopy ovitraps and greatly outnumbered Ae. hendersoni in canopy ovitraps. In contrast, the expected stratification was found in nearby upland habitats.
Collapse
Affiliation(s)
- Jamie Fitzgerald
- Department of Biology, Clark University, Worcester, MA 01610, U.S.A
| | - Todd Livdahl
- Department of Biology, Clark University, Worcester, MA 01610, U.S.A.,
| |
Collapse
|
20
|
Costa DRD, Leite SA, Coelho BS, Santos MPD, Joachim-Bravo IS, Montoya P, Dias VS, Castellani MA. Interference of tritrophic (grape × medfly × parasitoid) interactions by mineral and biomaterial films. Bull Entomol Res 2023; 113:838-844. [PMID: 37997802 DOI: 10.1017/s0007485323000524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Fruit fly infestation is one of the main obstacles to the exportation of fresh agricultural produce. Films of mineral particles and biomaterials have the potential to protect fruits against tephritid fruit fly infestation. The present study evaluated the effects of particle films on the tritrophic interactions of grape (Vitis vinifera L.), the fruit fly Ceratitis capitata (Wiedemann) and the parasitoid Diachasmimorpha longicaudata (Ashmead) under semi-field conditions. Grapes were biometrically characterised (i.e. colour, firmness, mass, length and diameter), treated with mineral particles, biomaterials or distilled water (control), and then used in oviposition and parasitism bioassays. In the oviposition bioassay, the treated grapes were exposed to 50 C. capitata pairs in field cages, and after 48 h, the punctures and eggs on each fruit were counted. In the parasitism bioassay, treated grapes were artificially infested with third-instar C. capitata larvae (two per fruit), exposed (2 h) to 50 D. longicaudata pairs in field cages to determine parasitism index, larval and pupal viabilities and number of flies and parasitoids emerged. Treatment with the mineral film affected fruit colour and reduced C. capitata oviposition but failed to significantly affect the parasitism capacity of D. longicaudata. The ability of the parasitoid to locate and parasitise C. capitata larvae in kaolin-coated fruits suggests that kaolin films could be used in conjunction with biological agents to control fruit flies.
Collapse
Affiliation(s)
- Daniela Ribeiro da Costa
- Department of Crop Science and Animal Science, State University of Southwestern Bahia, Vitória da Conquista, BA Cep 45031-900, Brazil
| | - Suzany Aguiar Leite
- Department of Crop Science and Animal Science, State University of Southwestern Bahia, Vitória da Conquista, BA Cep 45031-900, Brazil
| | - Beatriz Sousa Coelho
- Department of Crop Science and Animal Science, State University of Southwestern Bahia, Vitória da Conquista, BA Cep 45031-900, Brazil
| | - Mateus Pereira Dos Santos
- Department of Crop Science and Animal Science, State University of Southwestern Bahia, Vitória da Conquista, BA Cep 45031-900, Brazil
| | | | - Pablo Montoya
- Programa Moscas de la Fruta SENASICA-SADER, Camino a los Cacahotales S/N, Cep 30868 Metapa de Domínguez, Chiapas, Mexico
| | - Vanessa Simões Dias
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Maria Aparecida Castellani
- Department of Crop Science and Animal Science, State University of Southwestern Bahia, Vitória da Conquista, BA Cep 45031-900, Brazil
| |
Collapse
|
21
|
Li J, Li S, Li J, Tan X, Zhao Z, Jiang L, Hoffmann AA, Fang J, Ji R. Egg-associated secretions from the brown planthopper (Nilaparvata lugens) activate rice immune responses. Insect Sci 2023. [PMID: 38010047 DOI: 10.1111/1744-7917.13303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/06/2023] [Accepted: 10/24/2023] [Indexed: 11/29/2023]
Abstract
The brown planthopper (BPH, Nilaparvata lugens) is a notorious sap-sucking insect pest that damages rice (Oryza sativa) plants throughout Asia. During BPH feeding, saliva enters rice plant tissues, whereas during oviposition egg-associated secretions (EAS) are deposited in damaged plant tissue. Dynamic changes in rice to planthopper salivary effectors have been widely reported. However, the effects of EAS from planthopper on rice immunity remains largely unexplored. In this study, we found that both infestation of rice by gravid BPH female adults and treatment with the EAS elicited a strong and rapid accumulation of jasmonic acid (JA), JA-isoleucine, and hydrogen peroxide in rice. EAS enhanced plant defenses not only in rice but also in tobacco, and these impaired the performance of BPH on rice, as well as the performance of aphids and whiteflies on tobacco. High-throughput proteome sequencing of EAS led to 110 proteins being identified and 53 proteins with 2 or more unique peptides being detected. Some proteins from BPH EAS were also found in the salivary proteome from herbivores, suggesting potential evolutionary conservation of effector functions across feeding and oviposition; however, others were only identified in EAS, and these are likely specifically related to oviposition. These findings point to novel proteins affecting interactions between planthoppers and rice during oviposition, providing an additional source of information for effector studies.
Collapse
Affiliation(s)
- Jing Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Shuai Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
| | - Jing Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
| | - Xinyang Tan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Zhichang Zhao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Lei Jiang
- School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Ary A Hoffmann
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, VIC, Australia
| | - Jichao Fang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Rui Ji
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, Jiangsu Province, China
| |
Collapse
|
22
|
Byers KJRP. Reducing eggs on eggplant: a common naturally emitted plant volatile could replace insecticides in the 'king of vegetables'. New Phytol 2023; 240:915-917. [PMID: 37551037 DOI: 10.1111/nph.19172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
This article is a Commentary on Ghosh et al. (2023), 240: 1259–1274.
Collapse
Affiliation(s)
- Kelsey J R P Byers
- Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| |
Collapse
|
23
|
Klüber P, Arous E, Jerschow J, Fraatz M, Bakonyi D, Rühl M, Zorn H. Fatty acids derived from oviposition systems guide female black soldier flies (Hermetia illucens) toward egg deposition sites. Insect Sci 2023. [PMID: 37824440 DOI: 10.1111/1744-7917.13287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 10/14/2023]
Abstract
The black soldier fly, Hermetia illucens, comes with big promises for industrial purposes since its larvae feed polyphagously on a broad spectrum of organic substrates. However, research focusing on adult flies is scarce, which is inconsistent with their reproductive relevance within the rearing cycle. In particular, directed oviposition is a challenge in artificial systems. Currently, decomposing organic matter is commonly used as oviposition substrate, which has extensive potential for improvement in view of the lack of standardization and the risk of microbial contamination. Here, we identified three fatty acids and one fatty acid methyl ester derived from the surface of old oviposition sites and targeted to elucidate their effect on preference behavior and oviposition site selection using Y-olfactometry and prepared oviposition sites, respectively. Exposure to tetradecanoic acid attracted gravid females and stimulated oviposition most strongly, while decanoic acid demonstrated a repulsive effect. Females kept in mixed-sex populations were attracted by tetradecanoic acid, resulting in a higher egg mass found in the compound box (3.0-11.4 fold), a ≥ 2.3 fold reduction of nonspecifically deposited eggs, and the highest total egg mass. Conversely, decanoic and dodecanoic acid caused females to lay a greater proportion of eggs nonspecifically outside both boxes. Our data suggest that fatty acids, especially tetradecanoic acid, are important cues for oviposition site selection in black soldier flies. In order to achieve a directed oviposition behavior, the role of further short- and long-chain fatty acids as attractants should be examined.
Collapse
Affiliation(s)
- Patrick Klüber
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Emna Arous
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Jeanny Jerschow
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Marco Fraatz
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Giessen, Germany
| | - Daniel Bakonyi
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Martin Rühl
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Giessen, Germany
| | - Holger Zorn
- Department Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Giessen, Germany
| |
Collapse
|
24
|
Yánez-Segovia S, Ramírez CC, Lindroth RL, Fuentes-Contreras E. Resistance against Leucoptera sinuella (Lepidoptera: Lyonetiidae) among hybrid clones of Populus spp. in central Chile. J Econ Entomol 2023; 116:1662-1670. [PMID: 37441732 DOI: 10.1093/jee/toad129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/18/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
Leucoptera sinuella (Reutti) (Lepidoptera: Lyonetiidae) is a leaf miner specialist on Salicaceae recently introduced to Chile and Argentina, where it is causing economic damage to poplar plantations. We report a field survey in a poplar nursery naturally infested showing that regardless of the poplar hybrid taxon, high variability in resistance was observed among clones within families for oviposition and leaf-mining damage. A group of susceptible and resistant hybrid poplar clones was then selected for a laboratory evaluation of oviposition (antixenosis) and leaf-mining damage (antibiosis) on potted, rooted shoot cuttings. The concentration of condensed tannins (CTs) and salicinoid phenolic glucosides (SPGs) of the leaves of the selected clones from the laboratory study was also measured. Total oviposited eggs were positively correlated with leaf area, with the lowest oviposition on TMxT 11372 clone. The lowest percentage of mined leaf area was obtained for clones TMxT 11372, TMxT 11463, and TDxD 17574, but surprisingly no correlation between the percentage of mined leaf area and concentration of CTs and SPGs was found. Resistant poplar hybrids of our study could be suitable for breeding programs aimed for L. sinuella integrated pest management.
Collapse
Affiliation(s)
- Sebastián Yánez-Segovia
- Centro de Ecología Molecular y Funcional (CEMF), Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile
| | - Claudio C Ramírez
- Centro de Ecología Molecular y Funcional (CEMF), Instituto de Ciencias Biológicas, Universidad de Talca, Casilla 747, Talca, Chile
| | - Richard L Lindroth
- Department of Entomology, University of Wisconsin-Madison, 237 Russell Laboratories, 1630 Linden Drive, Madison, WI 53706, USA
| | - Eduardo Fuentes-Contreras
- Centro de Ecología Molecular y Funcional (CEMF), Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile
| |
Collapse
|
25
|
Bingjun Y, Cao D, Su Z, Wei J. The attractive host volatiles can enhance oviposition of Anoplophora glabripennis on a non-host tree. Pest Manag Sci 2023; 79:3538-3547. [PMID: 37160852 DOI: 10.1002/ps.7535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 04/29/2023] [Accepted: 05/09/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND The Asian longhorned beetle (ALB), Anoplophora glabripennis, is a serious wood borer of hardwood trees. Populus deltoides 'Shalinyang' (PdS) is attractive to ALB adults for oviposition but highly resistant to their offspring. Investigation of the chemicals regulating ALB oviposition is scarce in previous studies until now. To determine which chemicals emitted by PdS were attractive and induced oviposition behavior by ALB on non-host poplar tree species, we first: collected and identified the bio-active volatiles produced by PdS using coupled gas chromatography-mass spectrometry (GC-MS) and coupled gas chromatography-electroantennographic detector (GC-EAD); then evaluated which chemicals were attractive in a Y-tube olfactometer bioassay; and finally screened key compounds affecting ALB oviposition using a 'chemical-stimulated oviposition on non-host tree' bioassay. RESULTS (E)-2-Hexenal, hexyl acetate, (Z)-3-hexenol acetate, 1-hexanol, (Z)-3-hexenol, β-caryophyllene, and salicylaldehyde emitted from PdS were attractive to ALB. When (E)-2-hexenal, 1-hexanol, (Z)-3-hexenol acetate, and (Z)-3-hexenol were applied to the non-host tree Populus tomentosa, oviposition by ALB females was significantly increased. Furthermore, the mean number of oviposition pits increased as the (Z)-3-hexenol concentrations increased. Further tests on synergy between pairs of chemicals showed that (Z)-3-hexenol stimulated production of the most oviposition pits, but that the percentage of effective oviposition pits (those containing an egg and larva and not empty) decreased. CONCLUSION (Z)-3-Hexenol is the main chemical component inducing ALB oviposition. These results increase understanding about the oviposition behavior of ALB and could help improve management strategies that regulate ALB behavior by planting mixed-species forests resistant to ALB. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Yang Bingjun
- School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Dandan Cao
- Research Center of Biotechnology, Hebei University, Baoding, China
| | - Zhi Su
- Experimental Center of Desert Forest, Chinese Academy of Forestry, Dengkou, China
| | - Jianrong Wei
- School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
| |
Collapse
|
26
|
Zheng W, Ma H, Liu Z, Zhou Y, Zhu H, Liu J, Zhang C, Liu Z, Zhou X. Knockout of tyramine receptor 1 results in a decrease of oviposition, mating, and sex pheromone biosynthesis in female Plutella xylostella. Pest Manag Sci 2023; 79:3903-3912. [PMID: 37229578 DOI: 10.1002/ps.7571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Mating and oviposition are essential and closely coordinated events in the reproduction of moths. Although tyramine, a biogenic amine, can affect insect reproduction by binding its receptors, the specific regulatory mechanism has not yet been fully elucidated. RESULTS Plutella xylostella mutant with tyramine receptor 1 (TAR1) knockout (homozygous mutant with 7-bp deletion, Mut7) was developed by the CRISPR/Cas9 system to investigate the effect of TAR1 knockout on the reproduction of the moth. Compared with wild-type (WT), the egg yield of Mut7 female (Mut7F ) was significantly lower, no significant difference was observed in the egg size and hatching ratio between the groups. Further analysis showed that TAR1 knockout adversely affected ovary development, characterized by shorter ovarioles and fewer mature oocyte. Additionally, TAR1 knockout significantly reduced the occurrence of mating, resulting in a decrease in egg yield in Mut7F . The amounts of sex pheromones were quantified using gas chromatography-mass spectrometry. Results showed that the amounts of sex pheromone released by Mut7F were significantly lower before mating. Correspondingly, the messenger RNA (mRNA) levels of sex pheromone biosynthesis enzymes, including acetyl-CoA carboxylase (ACC) and desaturase (DES), were significantly lower in the Mut7F pheromone gland. The decreased sex pheromone biosynthesis in Mut7F , especially before re-mating, may be related to the underexpression of pheromone biosynthesis-activated neuropeptide (PBAN). CONCLUSION Overall, this study investigated the effect of PxTAR1 on oviposition and mating of P. xylostella. We report for the first time that TAR1 knockout could reduce the sex pheromone biosynthesis. These findings provide insights for developing a novel integrated pest control strategy based on mating interference. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Wei Zheng
- Longping Branch, College of Biology, Hunan University, Changsha, China
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Haihao Ma
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Zhangyang Liu
- Longping Branch, College of Biology, Hunan University, Changsha, China
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Yong Zhou
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Hang Zhu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Jia Liu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Chengjia Zhang
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Zheming Liu
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| | - Xiaomao Zhou
- Longping Branch, College of Biology, Hunan University, Changsha, China
- Institute of Agricultural Biotechnology, Hunan Academy of Agricultural Sciences, Changsha, China
- Hunan Institute of Agricultural Biotechnology, Hunan Provincial Key Laboratory of Pesticide Biology and Precise Use Technology, Changsha, China
| |
Collapse
|
27
|
Ameijeiras P, Capriotti N, Ons S, Oliveira PL, Sterkel M. eIF3 subunit M regulates blood meal digestion in Rhodnius prolixus affecting ecdysis, reproduction, and survival. Insect Sci 2023; 30:1282-1292. [PMID: 36621956 DOI: 10.1111/1744-7917.13174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/21/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
In triatomines, blood-feeding triggers many physiological processes including post embryonic development and reproduction. Different feeding habits, such as hematophagy, can shape gene functions to meet the challenges of each type of diet. The gut of blood-sucking insects faces particular challenges after feeding due to the quantity and the quality of the food ingested. A comparison of transcriptomic and proteomic data indicates that post transcriptional regulation of gene expression is crucial in the triatomine gut. It was proposed that eukaryotic translation initiation factor 3 subunit m (eIF3m) and eIF3e define 2 different eIF3 complexes with a distinct affinity for the different mRNAs, thus selecting the set of mRNAs to be translated and constituting a post transcriptional mode of regulation of gene expression. Because the eIF3m is mainly expressed in the gut, we evaluated its relevance in Rhodnius prolixus physiology through RNA interference-mediated gene silencing. The knockdown of eIF3m reduced the digestion rate, affecting the processes triggered by a blood meal. Its silencing inhibited molting and caused premature death in nymphs while impaired ovary development, oviposition and increased resistance to starvation in adult females. The survival of males after feeding (resistance to starvation) was not affected by eIF3m knockdown. The information regarding the eIF3m function in insects is scarce and the phenotypes observed in R. prolixus upon eIF3m silencing are different and more severe than those previously described in Drosophila melanogaster, indicating a pleiotropic role of this gene in triatomines.
Collapse
Affiliation(s)
- Pilar Ameijeiras
- Laboratorio de Neurobiología de Insectos (LNI), Centro Regional de Estudios Genómicos, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CENEXA, CONICET, La Plata, Buenos Aires, Argentina
| | - Natalia Capriotti
- Laboratorio de Neurobiología de Insectos (LNI), Centro Regional de Estudios Genómicos, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CENEXA, CONICET, La Plata, Buenos Aires, Argentina
| | - Sheila Ons
- Laboratorio de Neurobiología de Insectos (LNI), Centro Regional de Estudios Genómicos, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CENEXA, CONICET, La Plata, Buenos Aires, Argentina
| | - Pedro L Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
| | - Marcos Sterkel
- Laboratorio de Neurobiología de Insectos (LNI), Centro Regional de Estudios Genómicos, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CENEXA, CONICET, La Plata, Buenos Aires, Argentina
| |
Collapse
|
28
|
Liu P, Zhang X, Wang R, Chen S, Zhang T. Monoterpene alcohols induced by sweet potato weevil larvae deter conspecific adults from feeding and oviposition. Pest Manag Sci 2023; 79:3504-3510. [PMID: 37140406 DOI: 10.1002/ps.7530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 02/14/2023] [Accepted: 05/02/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND Intraspecific competition is shared in the insect world, especially under the condition of limited food and space resources. To avoid intraspecific competition and increase offspring survival, insects have evolved various effective strategies. A widely-accepted tactic is employing chemical cues, which are frequently utilized as indicators of conspecific colonization. The sweet potato weevil (SPW), Cylas formicarius, is a destructive pest of sweet potatoes. Its larvae bore into sweet potatoes and alter the emission of odors. The present study aimed to investigate whether volatiles associated with SPW larvae feeding influence the behavioral preference of conspecific adults. RESULTS Volatiles from SPW larvae-infested sweet potatoes were collected by a head-space method and analyzed using gas chromatography-electroantennogram detector (GC-EAD) and gas chromatography-mass spectrometry (GC-MS). Five compounds eliciting EAD responses from the antennae of both male and female adult SPW were identified from sweet potatoes with the third-instar larvae, including linalool, citronellol, nerol, geraniol, and ipomeamarone. Four monoterpene alcohols significantly repelled SPW adults from feeding and oviposition at higher doses in the behavioral preference bioassays. Among them, geraniol displayed the strongest repellent activities for SPW feeding and oviposition. These results suggested that SPW larvae could reduce colonization of adult SPWs by inducing monoterpene alcohols, thereby avoiding intraspecific competition. CONCLUSION The present study demonstrated that volatile monoterpene alcohols induced by SPW larvae are chemical cues of larvae occupation for SPW adults to change their behavioral preference. Unveiling factors that mediate avoidance of intraspecific competition could help develop repellents or oviposition deterrents for SPW control. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Panjing Liu
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Center of Hebei Province, Key Laboratory of IPM on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, China
| | - Xiaofang Zhang
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Center of Hebei Province, Key Laboratory of IPM on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, China
| | - Rongyan Wang
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Center of Hebei Province, Key Laboratory of IPM on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, China
| | - Shulong Chen
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Center of Hebei Province, Key Laboratory of IPM on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, China
| | - Tao Zhang
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Center of Hebei Province, Key Laboratory of IPM on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, China
| |
Collapse
|
29
|
Wang L, Li Z, Yi T, Li G, Smagghe G, Jin D. Ecdysteroid Biosynthesis Halloween Gene Spook Plays an Important Role in the Oviposition Process of Spider Mite, Tetranychus urticae. Int J Mol Sci 2023; 24:14797. [PMID: 37834248 PMCID: PMC10573261 DOI: 10.3390/ijms241914797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
In insects, the ecdysteroid hormone regulates development and reproduction. However, its function in the reproduction process of spider mites is still unclear. In this study, we investigated the effect of the Halloween gene Spook on the oviposition of the reproduction process in a spider mite, Tetranychus urticae. The expression patterns of the ecdysteroid biosynthesis and signaling pathway genes, as analyzed by RT-qPCR, showed that the expression pattern of the Halloween genes was similar to the oviposition pattern of the female mite and the expression patterns of the vitellogenesis-related genes TuVg and TuVgR, suggesting that the Halloween genes are involved in the oviposition of spider mites. To investigate the function of the ecdysteroid hormone on the oviposition of the reproduction process, we carried out an RNAi assay against the Halloween gene Spook by injection in female mites. Effective silencing of TuSpo led to a significant reduction of oviposition. In summary, these results provide an initial study on the effect of Halloween genes on the reproduction in T. urticae and may be a foundation for a new strategy to control spider mites.
Collapse
Affiliation(s)
- Liang Wang
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| | - Zhuo Li
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| | - Tianci Yi
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| | - Gang Li
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| | - Guy Smagghe
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| | - Daochao Jin
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (L.W.); (Z.L.); (T.Y.); (G.S.)
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guiyang 550025, China
| |
Collapse
|
30
|
Gong Z, Zhang J, Li Y, Li H, Zhang Z, Qin Y, Jiang Y, Duan Y, Li T, Miao J, Wu Y. Identification of Potential Gene Targets for Suppressing Oviposition in Holotrichia parallela Using Comparative Transcriptome Analysis. Int J Mol Sci 2023; 24:13138. [PMID: 37685945 PMCID: PMC10487570 DOI: 10.3390/ijms241713138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Holotrichia parallela is an important plant pest. Comparative feeding experiments showed that the egg production, oviposition duration and survival rate of H. parallela beetles were significantly higher when they fed on elm leaves than when they fed on willow or purpus privet leaves. RNA sequencing was used to determine transcriptomic changes associated with oviposition. Comparative transcriptome analysis revealed that the beetles that fed on elm and willow had a total of 171 genes with differential expression. When the beetles fed on elm and purpus privet, 3568 genes had differential expression. The vitellogenesis, ovarian serine protease, odorant-binding proteins, acyl-CoA synthetase and follicle cell proteins were commonly upregulated genes in elm-fed beetles compared with those fed on willow/purpus privet leaves. The involvement of the follicle cell protein 3C gene in the regulation of oviposition was confirmed using RNA interference. The results provide insights into the molecular mechanisms underlying oviposition in H. parallela feeding on different host plants. This study also describes a method for identifying potentially effective genes for pest control.
Collapse
Affiliation(s)
- Zhongjun Gong
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Jing Zhang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Yanmin Li
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Huiling Li
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Ziqi Zhang
- Institute of Plant Protection, Luoyang Academy of Agricultural and Forestry Sciences, Luoyang 471027, China
| | - Yifan Qin
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Yueli Jiang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Yun Duan
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Tong Li
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Jin Miao
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| | - Yuqing Wu
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Key Laboratory of Crop Pest Control of Henan Province, Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China; (Z.G.)
| |
Collapse
|
31
|
Keller JA, Hoover K. Approach to surveying egg masses of the invasive spotted lanternfly (Hemiptera: Fulgoridae). Environ Entomol 2023; 52:759-767. [PMID: 37318326 DOI: 10.1093/ee/nvad051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/22/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023]
Abstract
For the invasive planthopper Lycorma delicatula, eggs are an attractive target for surveys and management because they can persist from September through May before hatching, and remnants may be retained for years after hatching. Efforts to control this invasive species, though, are hampered by imperfect detection, which impedes early detection and rapid response, obscures management impacts, and reduces the fraction of egg masses that can be managed. To estimate egg mass detectability, we conducted 75 duplicate surveys of 20 × 5 m plots located in forest edges and disturbed areas frequently used by L. delicatula. We fit binomial mixture models and investigated the effects of weather, height (above or below 3 m), season (winter or spring), and basal area of trees within plots, finding no evidence that these factors affected detection rate, which averaged 52.2%. We additionally estimated the fraction of L. delicatula eggs that were laid above 3 m, putting them outside of easy reach for management by scraping or targeted ovicide application. This proportion varied with basal area of trees within plots, and the estimated mean was greater than 50% across the range of basal areas in study plots. Finally, we found that counts of old egg masses correlated with counts of new egg masses laid the year prior, but the ability to infer prior years' egg mass counts was limited. Together, these findings inform managers delimiting L. delicatula populations in mixed habitats and those treating egg masses to slow population growth and spread of this pest.
Collapse
Affiliation(s)
- Joseph A Keller
- Department of Entomology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Kelli Hoover
- Department of Entomology, The Pennsylvania State University, University Park, PA 16802, USA
| |
Collapse
|
32
|
Babin A, Gatti JL, Poirié M. Bacillus thuringiensis bioinsecticide influences Drosophila oviposition decision. R Soc Open Sci 2023; 10:230565. [PMID: 37650056 PMCID: PMC10465210 DOI: 10.1098/rsos.230565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
Behavioural avoidance has obvious benefits for animals facing environmental stressors such as pathogen-contaminated foods. Most current bioinsecticides are based on the environmental and opportunistic bacterium Bacillus thuringiensis (Bt) that kills targeted insect pests upon ingestion. While food and oviposition avoidance of Bt bioinsecticide by targeted insect species was reported, this remained to be addressed in non-target organisms, especially those affected by chronic exposure to Bt bioinsecticide such as Drosophila species. Here, using a two-choice oviposition test, we showed that female flies of three Drosophila species (four strains of D. melanogaster, D. busckii and D. suzukii) avoided laying eggs in the presence of Bt var. kurstaki bioinsecticide, with potential benefits for the offspring and female's fitness. Avoidance occurred rapidly, regardless of the fraction of the bioinsecticide suspension (spores and toxin crystals versus soluble toxins/compounds) and independently of the female motivation for egg laying. Our results suggest that, in addition to recent findings of developmental and physiological alterations upon chronic exposure to non-target Drosophila, this bioinsecticide may modify the competitive interactions between Drosophila species in treated areas and the interactions with their associated natural enemies.
Collapse
Affiliation(s)
- Aurélie Babin
- Université Côte d'Azur, INRAE, CNRS, Sophia Agrobiotech Institute (ISA), 06903 Sophia Antipolis, France
| | - Jean-Luc Gatti
- Université Côte d'Azur, INRAE, CNRS, Sophia Agrobiotech Institute (ISA), 06903 Sophia Antipolis, France
| | - Marylène Poirié
- Université Côte d'Azur, INRAE, CNRS, Sophia Agrobiotech Institute (ISA), 06903 Sophia Antipolis, France
| |
Collapse
|
33
|
Liu D, Asad M, Liao J, Chen J, Li J, Chu X, Pang S, Tariq M, Abbas AN, Yang G. The Potential Role of the Piwi Gene in the Development and Reproduction of Plutella xylostella. Int J Mol Sci 2023; 24:12321. [PMID: 37569697 PMCID: PMC10418840 DOI: 10.3390/ijms241512321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Piwi proteins play a significant role in germ cell development and the silencing of transposons in animals by associating with small non-coding RNAs known as Piwi-interacting RNAs (piRNAs). While the Piwi gene has been well characterized in various insect species, the role of the Piwi (PxPiwi) gene in the diamondback moth (Plutella xylostella), a globally distributed pest of cruciferous crops, remains unclear. Expression analysis demonstrated the upregulation of PxPiwi in pupae and testes. Furthermore, we generated a PxPiwi-knockout mutant using CRISPR/Cas9 technology, which resulted in a significantly prolonged pupal stage and the failure of pupae to develop into adults. Additionally, the knockdown of PxPiwi, through RNA interference (RNAi), led to a substantial decrease in the oviposition and hatchability of P. xylostella. These findings indicate that PxPiwi is specifically expressed and essential for the development and reproduction of P. xylostella. This is the first report indicating the involvement of the Piwi gene in the development of lepidopteran insects, except for reproduction and germ cell development, which provides a foundation for future investigations into the functions of PxPiwi.
Collapse
Affiliation(s)
- Dan Liu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Muhammad Asad
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Jianying Liao
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Jing Chen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Jianwen Li
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Xuemei Chu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Senbo Pang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Mubashir Tariq
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Anam Noreen Abbas
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| | - Guang Yang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (D.L.); (M.A.); (J.L.); (J.C.); (J.L.); (X.C.); (S.P.); (M.T.); (A.N.A.)
- Joint International Research Laboratory of Ecological Pest Control, Ministry of Education, Fuzhou 350002, China
- Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China
- Key Laboratory of Green Pest Control, Fujian Province University, Fuzhou 350002, China
| |
Collapse
|
34
|
Liu F, Li B, Liu C, Liu Y, Liu X, Lu M. Oviposition by Plagiodera versicolora on Salix matsudana cv. 'Zhuliu' alters the leaf transcriptome and impairs larval performance. Front Plant Sci 2023; 14:1226641. [PMID: 37538058 PMCID: PMC10394651 DOI: 10.3389/fpls.2023.1226641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/26/2023] [Indexed: 08/05/2023]
Abstract
Insect egg deposition can induce plant defenses against their larvae. Previous studies have primarily focused on herbaceous plant defenses; however, little is known about how the Salicaceae respond to insect egg deposition and defend themselves against herbivores. By combining plant defense gene studies and bioassays, we investigated the effect of the coleoptera Plagiodera versicolora egg deposition on willow (Salix matsudana cv. 'Zhuliu') and examined the interactions at the plant resistance and transcriptome levels. RNA-seq data were utilized to analyze changes in the leaf transcriptome with and without oviposition, and also the changes in the leaf transcriptome of feeding-damaged leaves with and without prior oviposition. P. versicolora oviposition on willow leaves resulted in altered expression levels of transcripts associated with plant stress and metabolic responses. Compared with leaves with no oviposition, leaves with egg deposition showed a slight increase in phenylpropanoid biosynthesis and phytohormone signaling genes after larval feeding. The RNA-seq analysis revealed alterations in willow transcripts in response to leaf beetle infestations. Bioassays indicated that oviposition by P. versicolora on willows reduced subsequent larvae performance, suggesting that prior oviposition by P. versicolora could increase willows' resistance to larvae. This study advances our knowledge of how oviposition by coleoptera insects induces changes in the resistance of leaves to herbivory in the Salicaceae family.
Collapse
|
35
|
Silla AJ, Hobbs RJ, Gilbert DJ, Goodall D, Parrott ML, Lee A, O'Brien JK, Byrne PG. Application of Reproductive Technologies to the Critically Endangered Baw Baw Frog, Philoria frosti. Animals (Basel) 2023; 13:2232. [PMID: 37444030 DOI: 10.3390/ani13132232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Reproductive technologies (RTs) can assist integrated conservation breeding programs to attain propagation targets and manage genetic diversity more effectively. While the application of RTs to enhance the conservation management of threatened amphibians has lagged behind that of other taxonomic groups, a recent surge in research is narrowing the divide. The present study reports on the first application of RTs (hormone-induced spawning, hormone-induced sperm-release, and sperm cryopreservation) to the critically endangered Baw Baw frog, Philoria frosti. To determine the effect of hormone therapy on spawning success, male-female pairs were administered either 0 μg/g gonadotropin-releasing hormone agonist (GnRHa), 0.5 μg/g GnRHa, or 0.5 μg/g GnRHa + 10 μg/g metoclopramide (MET) (n = 6-7 pairs/treatment), and the number of pairs ovipositing, total eggs, and percent fertilisation success were quantified. To determine the effect of hormone therapy on sperm-release and to establish the peak time to collect sperm post-hormone administration, males were administered 0 IU/g (n = 4), or 20 IU/g hCG (n = 16). Total sperm, sperm concentration, and percent viability were quantified at 0, 2, 4, 6, 8, 10, and 12 h post-hormone administration. Overall, the percentage of pairs ovipositing was highest in the GnRHa + MET treatment, with 71% of pairs ovipositing, compared to 57% and 33% of pairs in the GnRHa and control treatments, respectively. The quantity of sperm released from males in response to hCG peaked at 4 h post-hormone administration, though it remained high up to 12 h. The percent sperm viability also peaked at 4 h post-administration (94.5%), exhibiting a steady decline thereafter, though viability remained above 77% throughout the 12 h collection period. The remaining sperm samples (n = 22) were cryopreserved using established protocols and biobanked for long-term storage and future conservation applications. The mean post-thaw sperm viability was 59%, and the percent total motility was 17%. The results from this preliminary study will direct further applications of RTs to the critically endangered Baw Baw frog to assist with species recovery.
Collapse
Affiliation(s)
- Aimee J Silla
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Rebecca J Hobbs
- Taronga Institute of Science and Learning, Taronga Conservation Society Australia, Mosman, NSW 2088, Australia
| | - Deon J Gilbert
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
- Wildlife Conservation and Science, Zoos Victoria, Elliott Avenue, Parkville, VIC 3052, Australia
| | - Damian Goodall
- Wildlife Conservation and Science, Zoos Victoria, Elliott Avenue, Parkville, VIC 3052, Australia
| | - Marissa L Parrott
- Wildlife Conservation and Science, Zoos Victoria, Elliott Avenue, Parkville, VIC 3052, Australia
| | - Adam Lee
- Wildlife Conservation and Science, Zoos Victoria, Elliott Avenue, Parkville, VIC 3052, Australia
| | - Justine K O'Brien
- Taronga Institute of Science and Learning, Taronga Conservation Society Australia, Mosman, NSW 2088, Australia
| | - Phillip G Byrne
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
| |
Collapse
|
36
|
Darby CS, Featherston KM, Lin J, Franz AWE. Detection of La Crosse Virus In Situ and in Individual Progeny to Assess the Vertical Transmission Potential in Aedes albopictus and Aedes aegypti. Insects 2023; 14:601. [PMID: 37504607 PMCID: PMC10380845 DOI: 10.3390/insects14070601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023]
Abstract
La Crosse virus (LACV) is circulating in the midwestern and southeastern states of the United States and can cause human encephalitis. The main vector of the virus is the eastern tree-hole mosquito, Aedes triseriatus. Ae. albopictus has been also described as a natural LACV vector, while Ae. aegypti has been infected with the virus under laboratory conditions. Here, we compare the vertical transmission potential of LACV in Ae. albopictus and Ae. aegypti, with emphasis given to the ovarian infection patterns that the virus generates in both species. Both mosquito species received artificial bloodmeals containing LACV. At defined time points post-infection/bloodmeal, midguts, head tissue, and ovaries were analyzed for the presence of virus. Viral infection patterns in the ovaries were visualized via immunofluorescence confocal microscopy and immunohistopathology assays using an LACV-specific monoclonal antibody. In Ae. aegypti, LACV was confronted with midgut infection and escape barriers, which were much less pronounced in Ae. albopictus, resulting in a significantly higher prevalence of infection in the latter. Following the ingestion of a single virus-containing bloodmeal, no progeny larvae were found to be virus-infected. Regardless, females of both species showed the presence of LACV antigen in their ovariole sheaths. Furthermore, in a single Ae. albopictus female, viral antigen was associated with the nurse cells inside the primary follicles. Following the ingestion of a second non-infectious bloodmeal at 7- or 10-days post-ingestion of an LACV-containing bloodmeal, more progeny larvae of Ae. albopictus than of Ae. aegypti were virus-infected. LACV antigen was detected in the egg chambers and ovariole sheaths of both mosquito species. Traces of viral antigen were also detected in a few oocytes from Ae. albopictus. The low level of vertical transmission and the majority of the ovarian infection patterns suggested the transovum rather than transovarial transmission (TOT) of the virus in both vector species. However, based on the detection of LACV antigen in follicular tissue and oocytes, there was the potential for TOT among several Ae. albopictus females. Thus, TOT is not a general feature of LACV infection in mosquitoes. Instead, the TOT of LACV seems to be dependent on its particular interaction with the reproductive tissues of a female.
Collapse
Affiliation(s)
| | | | | | - Alexander W. E. Franz
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA; (C.S.D.); (K.M.F.); (J.L.)
| |
Collapse
|
37
|
Borrero J, Wright DS, Bacquet CN, Merrill RM. Oviposition behavior is not affected by ultraviolet light in a butterfly with sexually-dimorphic expression of a UV-sensitive opsin. Ecol Evol 2023; 13:e10243. [PMID: 37408633 PMCID: PMC10318619 DOI: 10.1002/ece3.10243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023] Open
Abstract
Animal vision is important for mediating multiple complex behaviors. In Heliconius butterflies, vision guides fundamental behaviors such as oviposition, foraging, and mate choice. Color vision in Heliconius involves ultraviolet (UV), blue and long-wavelength-sensitive photoreceptors (opsins). Additionally, Heliconius possess a duplicated UV opsin, and its expression varies widely within the genus. In Heliconius erato, opsin expression is sexually dimorphic; only females express both UV-sensitive opsins, enabling UV wavelength discrimination. However, the selective pressures responsible for sex-specific differences in opsin expression and visual perception remain unresolved. Female Heliconius invest heavily in finding suitable hostplants for oviposition, a behavior heavily dependent on visual cues. Here, we tested the hypothesis that UV vision is important for oviposition in H. erato and Heliconius himera females by manipulating the availability of UV in behavioral experiments under natural conditions. Our results indicate that UV does not influence the number of oviposition attempts or eggs laid, and the hostplant, Passiflora punctata, does not reflect UV wavelengths. Models of H. erato female vision suggest only minimal stimulation of the UV opsins. Overall, these findings suggest that UV wavelengths do not directly affect the ability of Heliconius females to find suitable oviposition sites. Alternatively, UV discrimination could be used in the context of foraging or mate choice, but this remains to be tested.
Collapse
Affiliation(s)
- Jose Borrero
- Division of Evolutionary BiologyLMU MunichMunichGermany
| | | | | | | |
Collapse
|
38
|
da Silva IB, Costa-Leonardo AM. Functional Morphology and Development of the Colleterial Glands in Non- and Egg-Laying Females of the Pest Termite Coptotermes gestroi (Blattaria, Isoptera, Rhinotermitidae). Microsc Microanal 2023; 29:1277-1288. [PMID: 37749679 DOI: 10.1093/micmic/ozad040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/23/2023] [Accepted: 03/10/2023] [Indexed: 09/27/2023]
Abstract
Colleterial glands of female insects are accessory glands responsible for producing secretions associated with egg-laying. Within Dictyoptera, they synthesize compounds of the ootheca. However, their morphology and role in termites are poorly understood. Here, we compared the morphology, development, and secretory activity of the colleterial glands between non- and egg-laying females of the pest termite Coptotermes gestroi under light and transmission electron microscopy. We also provide the first description of these glands for Rhinotermitidae. The glands are paired, divided into anterior and posterior units, which join in a common duct via basal trunks. They are highly developed within egg-laying females, especially the posterior gland, secreting glycoproteins to lubricate the genital chamber and/or stick the eggs together. Ultrastructure revealed glandular epithelia composed of bicellular units of Class 3, whose secretory activity varied between groups and units. Posterior gland of egg-laying females showed richness of mitochondria, rough endoplasmic reticulum, and secretory vesicles, including electron-dense secretory granules, indicating synthesis and transport of contents, especially proteins. The basal trunks were enfolded by muscles, supporting their role in conducting secretion. Morphophysiological modifications occur in the colleterial glands as females mature and lay eggs, and the mechanisms underlying the secretory cycle of the glands are discussed.
Collapse
Affiliation(s)
- Iago Bueno da Silva
- Laboratório de Cupins, São Paulo State University (UNESP), Av. 24A, 1515, Bela Vista, Rio Claro SP 13.506-900, Brazil
| | - Ana Maria Costa-Leonardo
- Laboratório de Cupins, São Paulo State University (UNESP), Av. 24A, 1515, Bela Vista, Rio Claro SP 13.506-900, Brazil
| |
Collapse
|
39
|
Verhulst NO, Juurlink M, Wondwosen B, Rugaimukamu S, Hill SR, Ignell R, Koenraadt CJM, Spitzen J. Fermenting molasses and a synthetic odour blend to attract blood-fed Anopheles coluzzii. Med Vet Entomol 2023; 37:228-237. [PMID: 36346219 DOI: 10.1111/mve.12622] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/17/2022] [Indexed: 05/18/2023]
Abstract
Collecting blood-fed mosquitoes to monitor pathogen presence or to gather information on the host blood meal is often challenging. Fermenting molasses can be used to produce carbon dioxide to attract host-seeking mosquitoes, however, earlier work indicated that it may also attract blood-fed mosquitoes in the field. In the current study, these field results were validated in an experimental setting using a large cage setup with Anopheles coluzzii (Diptera, Culicidae). Blood-fed mosquitoes were indeed attracted to fermenting molasses with the highest attraction at 72 hours post feeding, which was used for subsequent experiments. Next, it was tested if fermentation of molasses is required for attraction, and whether it acts as an oviposition attractant, increases egg laying, or increases mosquito survival. The compounds that could be responsible for attraction were identified by combined electrophysiology and chemical analyses and formulated into a synthetic blend. Fermenting molasses attracted blood-fed mosquitoes in the large cage study, while fermenting sugar and non-fermenting molasses did not. The fecundity of blood-fed mosquitoes increased after feeding on fermenting molasses, however, compounds emanating from molasses did not trigger oviposition. The synthetic blend attracted blood-fed mosquitoes and may be used to determine mosquito host selection and for xenomonitoring, as 'flying syringes' to detect non-vector borne pathogens.
Collapse
Affiliation(s)
- Niels O Verhulst
- National Centre for Vector Entomology, Institute of Parasitology, Faculty of Veterinary Science, University of Zürich, Zürich, Switzerland
| | - Malou Juurlink
- Laboratory of Entomology, Wageningen University, Wageningen, Gelderland, The Netherlands
| | - Betelehem Wondwosen
- Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Oromia, Ethiopia
| | - Sapience Rugaimukamu
- Laboratory of Entomology, Wageningen University, Wageningen, Gelderland, The Netherlands
| | - Sharon R Hill
- Disease Vector Group, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Skåne County, Sweden
| | - Rickard Ignell
- Disease Vector Group, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Skåne County, Sweden
| | | | - Jeroen Spitzen
- Laboratory of Entomology, Wageningen University, Wageningen, Gelderland, The Netherlands
| |
Collapse
|
40
|
Huang Y, Wang D, Jian F. Survival of Plodia interpunctella (Hübner) larvae treated with 98% N2 and the life history of their next generation. Bull Entomol Res 2023; 113:389-395. [PMID: 36798975 DOI: 10.1017/s0007485323000044] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Understanding the development and reproduction of insects surviving controlled atmosphere treatment may help in developing sound pest management strategies. The developmental duration, survival percentage, and oviposition of Plodia interpunctella and its F1 generation were determined after the fifth instar larvae (the last-stage larvae) were exposed to 98% N2 for different exposure times. The survival percentage of the last-stage larvae treated with 98% N2 for 6, 4, 1.5, and 0 day was 70, 80, 91, and 100%, respectively when measured 24 h after treatment. The survival percentage of the last-stage larvae that developed to pupae was 37, 55, 73, and 96%, corresponding to the different exposure times. The developmental time needed to pass from pupa to adult emergence of specimens treated as the last-stage larvae were 8, 7, 6, and 6 days corresponding respectively to high N2 treatment after 6, 4, 1.5, and 0 day of exposure. The mean number of eggs laid by the subsequent females developed from the treated last-stage larvae was 35, 66, 81, and 123, respectively. The oviposition inhibition ratio of the F1 generation decreased by more than 33% compared with that of the parental generation. When the last-stage larvae were exposed to 98% N2 for longer than 4 days, the immature developmental time of surviving individuals in the F1 generation was delayed more than 6 days due to slower egg hatching and longer development of the first and second instar larvae stages. The population trend index of the F1 generation was lower when raised from the treated last-stage larvae than those from untreated controls.
Collapse
Affiliation(s)
- Yilin Huang
- Henan University of Technology, National Grain Industry (Storage Insect Pest Control) Technology Innovation Center, Grain Storage and Logistics National Engineering Research Center, Zhengzhou, 450001, China
| | - Dianxuan Wang
- Henan University of Technology, National Grain Industry (Storage Insect Pest Control) Technology Innovation Center, Grain Storage and Logistics National Engineering Research Center, Zhengzhou, 450001, China
| | - Fuji Jian
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada
| |
Collapse
|
41
|
Musunzaji PS, Ndenga BA, Mzee S, Abubakar LU, Kitron UD, Labeaud AD, Mutuku FM. Oviposition Preferences of Aedes aegypti in Msambweni, Kwale County, Kenya. J Am Mosq Control Assoc 2023; 39:85-95. [PMID: 37270926 PMCID: PMC10885850 DOI: 10.2987/22-7103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Aedes aegypti is the primary vector of dengue fever virus (DENV) worldwide. Infusions made from organic materials have been shown to act as oviposition attractants for Ae. aegypti; however, studies on locally suitable infusion materials are lacking. The current study assessed the suitability of 4 locally available materials as oviposition infusions for use in surveillance and control of Ae. aegypti in Kwale County, Kenya. Oviposition infusion preferences were assessed in laboratory, semifield, and field conditions, using 4 infusions made from banana, grass, neem, and coconut. In addition, ovitrapping in wall, grass, bush, and banana microhabitats was done in 10 houses each in urban and rural coastal households to determine suitable oviposition microhabitats. Overall, the highest oviposition responses were observed for banana infusion, followed by neem and grass infusions, which were comparable. Coconut infusion resulted in the lowest oviposition response. Although female Ae. aegypti did not show preference for any microhabitat, the oviposition activity across all the microhabitats was highly enhanced by use of the organic infusions. Banana, neem, and grass infusions could be used to attract gravid mosquitoes to oviposition sites laced with insecticide to kill eggs. Additionally, banana plantings could be important targets for integrated vector control programs.
Collapse
|
42
|
Badenes-Pérez FR. Plant Glucosinolate Content and Host-Plant Preference and Suitability in the Small White Butterfly (Lepidoptera: Pieridae) and Comparison with Another Specialist Lepidopteran. Plants (Basel) 2023; 12:plants12112148. [PMID: 37299126 DOI: 10.3390/plants12112148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/25/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Glucosinolates are used in host-plant recognition by insects specialized on Brassicaceae, such as Pieris rapae L. (Lepidoptera: Pieridae). This research investigated the association between P. rapae oviposition and larval survival and host-plant glucosinolate content using 17 plant species in which glucosinolate content had previously been determined. Two-choice oviposition tests (comparing each plant species to Arabidopsis thaliana L.) and larval survival experiments showed that indolic glucosinolate content had a positive effect on oviposition preference and larval survival in P. rapae. In the host plants tested, the effects of indolic glucosinolates on oviposition preference and of glucosinolate complexity index and aliphatic glucosinolates without sulfur-containing side chains on total oviposition were smaller on P. rapae than on Plutella xylostella L. (Lepidoptera: Plutellidae), another lepidopteran specialized on glucosinolate-containing plants. This study suggests that high indolic glucosinolate content could make crop plants more susceptible to both P. rapae and P. xylostella, but this effect seems to be greater for P. xylostella. Additionally, as some differences in oviposition and larval survival between P. rapae and P. xylostella occurred in some individual plants, it cannot be concluded that bottom-up factors are always similar in these two specialist insects.
Collapse
Affiliation(s)
- Francisco Rubén Badenes-Pérez
- Max Planck Institute for Chemical Ecology, Department of Entomology, 07745 Jena, Germany
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
| |
Collapse
|
43
|
Hardy H, Harte SJ, Hopkins RJ, Mnyone L, Hawkes FM. The influence of manure-based organic fertilisers on the oviposition behaviour of Anopheles arabiensis. Acta Trop 2023:106954. [PMID: 37244404 DOI: 10.1016/j.actatropica.2023.106954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 05/29/2023]
Abstract
The rice agroecosystem provides suitable breeding habitat for many malaria vector species, and rice-adjacent communities are consequently exposed to a greater malaria transmission risk than non-rice-associated communities. As part of efforts to expand rice production in Africa, sustainable and climate-adapted practices such as the System of Rice Intensification (SRI) are being promoted. SRI encourages the use of organic fertilisers (OFs) such as cow and chicken dung, as opposed to inorganic industrially produced fertilisers, due to their lower resource cost, apparent benefit to the rice agroecosystem and as a means to reduce the greenhouse gas emissions associated with the production of industrial fertilisers. However, the impact of OFs on mosquito fauna is not well documented and may have knock-on consequences on malaria transmission risk. Here, we demonstrate, using dual choice egg count assays, that both cow and chicken dung modulate the oviposition behaviour of Anopheles arabiensis, a major malaria vector in Sub-Saharan Africa. A significantly reduced proportion of eggs were laid in water treated with either cow or chicken dung compared to untreated water, with higher dung concentrations resulting in further reduced proportions. When presented in competition, significantly fewer eggs were laid in water treated with chicken dung than with cow dung. Moreover, there was no evidence of egg retention in any experiment, including in no-choice experiments where only dung-containing dishes were available. These results suggest both cow and chicken dung may act as oviposition deterrents to malaria vector species and that the application of manure-based OFs in rice agriculture may modulate the oviposition behaviour of An. gambiae s.l. within agroecosystems. Quantification of the ammonia present in dung-infused water showed higher concentrations were present in the chicken dung infusion, which may be one contributing factor to the difference in observed deterrence between the two dung types. Deterrence of mosquito oviposition in OF-treated farms may potentially affect the overall production of malaria vectors within rice fields and their contribution to local malaria transmission.
Collapse
Affiliation(s)
- Harrison Hardy
- Natural Resources Institute, University of Greenwich, UK..
| | - Steven J Harte
- Natural Resources Institute, University of Greenwich, UK..
| | | | - Ladslaus Mnyone
- Institute of Pest Management, Sokoine University of Agriculture, Tanzania.; Department of Science, Technology and Innovation, Ministry of Education, Science and Technology, Tanzania..
| | | |
Collapse
|
44
|
Chistopolsky I, Leonova A, Mezheritskiy M, Boguslavsky D, Kristinina A, Zakharov I, Sorminskiy A, Vorontsov D, Dyakonova V. Intense Locomotion Enhances Oviposition in the Freshwater Mollusc Lymnaea stagnalis: Cellular and Molecular Correlates. Biology (Basel) 2023; 12:764. [PMID: 37372049 DOI: 10.3390/biology12060764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/18/2023] [Accepted: 05/20/2023] [Indexed: 06/29/2023]
Abstract
Intense species-specific locomotion changes the behavioural and cognitive states of various vertebrates and invertebrates. However, whether and how reproductive behaviour is affected by previous increased motor activity remains largely unknown. We addressed this question using a model organism, the pond snail Lymnaea stagnalis. Intense crawling in shallow water for two hours had previously been shown to affect orienting behaviour in a new environment as well as the state of the serotonergic system in L. stagnalis. We found that the same behaviour resulted in an increased number of egg clutches and the total number of eggs laid in the following 24 h. However, the number of eggs per clutch was not affected. This effect was significantly stronger from January to May, in contrast to the September-December period. Transcripts of the egg-laying prohormone gene and the tryptophan hydroxylase gene, which codes for the rate-limiting enzyme in serotonin synthesis, were significantly higher in the central nervous system of snails that rested in clean water for two hours after intense crawling. Additionally, the neurons of the left (but not the right) caudo-dorsal cluster (CDC), which produce the ovulation hormone and play a key role in oviposition, responded to stimulation with a higher number of spikes, although there were no differences in their resting membrane potentials. We speculate that the left-right asymmetry of the response was due to the asymmetric (right) location of the male reproductive neurons having an antagonistic influence on the female hormonal system in the hermaphrodite mollusc. Serotonin, which is known to enhance oviposition in L. stagnalis, had no direct effect on the membrane potential or electrical activity of CDC neurons. Our data suggest that (i) two-hour crawling in shallow water enhances oviposition in L. stagnalis, (ii) the effect depends on the season, and (iii) the underlying mechanisms may include increased excitability of the CDC neurons and increased expression of the egg-laying prohormone gene.
Collapse
Affiliation(s)
- Ilya Chistopolsky
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Alexandra Leonova
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Maxim Mezheritskiy
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Dmitri Boguslavsky
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Angelina Kristinina
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Igor Zakharov
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Andrey Sorminskiy
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Dmitri Vorontsov
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| | - Varvara Dyakonova
- Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, 119334 Moscow, Russia
| |
Collapse
|
45
|
Mulatier M, Boullis A, Dollin C, Cebrián-Torrejón G, Vega-Rúa A. Chikungunya Virus Infection and Gonotrophic Cycle Shape Aedes aegypti Oviposition Behavior and Preferences. Viruses 2023; 15:v15051043. [PMID: 37243130 DOI: 10.3390/v15051043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Targeting gravid females through chemical lures is a promising strategy in vector control; however, it requires the understanding of the factors susceptible to alter female oviposition behavior. Here, we evaluated the effect of infection with chikungunya virus (CHIKV) and the number of gonotrophic cycles (GCs) on oviposition activity in A. aegypti. Dual choice oviposition assays were performed, where dodecanoic acid, pentadecanoic acid, n-heneicosane and a Sargasssum fluitans (Børgesen) Børgesen extract were tested in uninfected females and females infected with CHIKV, at the 1st and 2nd GC. Infected females displayed a lower percentage of oviposition and a higher number of eggs laid at the 1st GC. Then, the combined effects of GC and CHIKV were observed on oviposition preferences, with a chemical-dependent effect. For instance, the deterrent effect of n-heneicosane and pentadecanoic acid increased at the 2nd GC in infected females. These results allow for a deeper understanding of the mechanisms involved in oviposition site selection and highlight the need for taking into account physiological stage changes to increase the control programs' efficacy.
Collapse
Affiliation(s)
- Margaux Mulatier
- Laboratory of Vector Control Research, Pasteur Institute of Guadeloupe-Lieu-dit Morne Jolivière, 97139 Les Abymes, France
| | - Antoine Boullis
- Laboratory of Vector Control Research, Pasteur Institute of Guadeloupe-Lieu-dit Morne Jolivière, 97139 Les Abymes, France
| | - Christelle Dollin
- Laboratory of Vector Control Research, Pasteur Institute of Guadeloupe-Lieu-dit Morne Jolivière, 97139 Les Abymes, France
| | | | - Anubis Vega-Rúa
- Laboratory of Vector Control Research, Pasteur Institute of Guadeloupe-Lieu-dit Morne Jolivière, 97139 Les Abymes, France
| |
Collapse
|
46
|
Sánchez-Hernández E, Martín-Ramos P, Niño-Sánchez J, Diez-Hermano S, Álvarez-Taboada F, Pérez-García R, Santiago-Aliste A, Martín-Gil J, Diez-Casero JJ. Characterization of Leptoglossus occidentalis Eggs and Egg Glue. Insects 2023; 14:396. [PMID: 37103211 PMCID: PMC10143709 DOI: 10.3390/insects14040396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 06/19/2023]
Abstract
The western conifer seed bug (Leptoglossus occidentalis Heidemann, 1910, Heteroptera: Coreidae) has a significant economic impact due to the reduction in the quality and viability of conifer seed crops; it can feed on up to 40 different species of conifers, showing a clear predilection for Pinus pinea L. in Europe. Its incidence is especially relevant for the pine nut-producing industry, given that the action of this pest insect can reduce the production of pine nuts by up to 25%. As part of ongoing efforts aimed at the design of control strategies for this insect, this work focuses on the characterization (by scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and gas chromatography-mass spectroscopy, GC-MS) of the compounds released by these insects during oviposition, with emphasis on the adhesive secretion that holds L. occidentalis eggs together. Elemental analysis pointed to the presence of significant amounts of compounds with high nitrogen content. Functional groups identified by infrared spectroscopy were compatible with the presence of chitin, scleroproteins, LNSP-like and gelatin proteins, shellac wax analogs, and policosanol. Regarding the chemical species identified by GC-MS, eggs and glue hydromethanolic extracts shared constituents such as butyl citrate, dibutyl itaconate, tributyl aconitate, oleic acid, oleamide, erucamide, and palmitic acid, while eggs also showed stearic and linoleic acid-related compounds. Knowledge of this composition may allow advances in new strategies to address the problem caused by L. occidentalis.
Collapse
Affiliation(s)
- Eva Sánchez-Hernández
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Pablo Martín-Ramos
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Jonatan Niño-Sánchez
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Sergio Diez-Hermano
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Flor Álvarez-Taboada
- School of Agrarian and Forest Engineering, DRACONES, Universidad de León, Avenida de Portugal 41, 24401 Ponferrada, Spain
| | - Rodrigo Pérez-García
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| | - Alberto Santiago-Aliste
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Jesús Martín-Gil
- Department of Agricultural and Forestry Engineering, ETSIIAA, University of Valladolid, Avenida de Madrid 44, 34004 Palencia, Spain
| | - Julio Javier Diez-Casero
- Instituto Universitario de Investigación en Gestión Forestal Sostenible (iuFOR), Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
- Departamento de Producción Vegetal y Recursos Forestales, ETSIIAA, Universidad de Valladolid, Avenida de Madrid 57, 34071 Palencia, Spain
| |
Collapse
|
47
|
Lampert EC, Perez G, Reyes Alejo D, Jones SM, Ignatius A. The 2021 emergence of Brood X periodical cicadas Magicicada spp. (Hemiptera: Cicadidae) in Georgia, United States of America. Environ Entomol 2023; 52:270-278. [PMID: 36897278 DOI: 10.1093/ee/nvad018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/02/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
The US state of Georgia includes the range of several periodical cicada broods and is the southernmost state in which Brood X periodical cicadas emerge; however, no research has focused on this brood in this state. We used reports of sightings on social media, communication with the public, and our own searches to determine the geographic range in Georgia and timing of biological events. Both adults and exuviae were identified to species to determine the species makeup at those locations. The first Brood X adult was photographed on April 26 in Lumpkin County, and Magicicada septendecim L. was the most common species. Online records and site visits led to distribution records in nine counties, including six that provided no records in the 2004 emergence. Driving surveys revealed patchy distributions of chorusing adults and species distribution modeling further predicted locations where Brood X can be found in future surveys. We observed cicada oviposition scars at two locations and found no effect of host plant on presence or density of scars. Lastly, collections of dead adults showed female remains were less common and more likely to be dismembered. Further investigations of the periodical cicadas in Georgia are recommended to better understand the phenology, evolution, and ecology of these remarkable insects.
Collapse
Affiliation(s)
- Evan C Lampert
- Department of Biology, University of North Georgia, 3820 Mundy Mill Road, Oakwood, GA 30566, USA
| | - Gaby Perez
- Department of Biology, University of North Georgia, 3820 Mundy Mill Road, Oakwood, GA 30566, USA
| | - Daleana Reyes Alejo
- Department of Biology, University of North Georgia, 3820 Mundy Mill Road, Oakwood, GA 30566, USA
| | - Sydney Marie Jones
- Department of Biology, Carleton College, One North College Street, Northfield, MN 55057, USA
| | - Amber Ignatius
- Institute for Environmental and Spatial Analysis, University of North Georgia, 3820 Mundy Mill Road, Oakwood, GA 30566, USA
| |
Collapse
|
48
|
Shepherd JG. Mating, Sperm Transfer and Oviposition in Soft Ticks (Acari: Argasidae), a Review. Pathogens 2023; 12:pathogens12040582. [PMID: 37111468 PMCID: PMC10142124 DOI: 10.3390/pathogens12040582] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 04/29/2023] Open
Abstract
This review addresses the physiology and behavioral events involved in the reproduction of soft ticks (family Argasidae), with special attention to the events of their adult life: mating, sperm transfer and egg-laying. Many of these aspects are held in common with hard ticks, but the repeated short duration of feeding bouts in soft ticks, in contrast to the extended single engorgements of hard ticks, has consequences peculiar to soft tick reproduction. Reviewed are the dramatic external mechanism of sperm transfer, the unusual maturation and unique morphology and motility of the spermatozoa, the mechanism of oogenesis and its hormonal control, the mystery of fertilization, the involvement of pheromones in mating, the control of reproductive arrests and the vertical transmission of symbiotes in reproduction. Jumping-off points for further investigation are discussed throughout.
Collapse
Affiliation(s)
- Julian G Shepherd
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902-6000, USA
| |
Collapse
|
49
|
Laursen WJ, Budelli G, Tang R, Chang EC, Busby R, Shankar S, Gerber R, Greppi C, Albuquerque R, Garrity PA. Humidity sensors that alert mosquitoes to nearby hosts and egg-laying sites. Neuron 2023; 111:874-887.e8. [PMID: 36640768 PMCID: PMC10023463 DOI: 10.1016/j.neuron.2022.12.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/23/2022] [Accepted: 12/19/2022] [Indexed: 01/15/2023]
Abstract
To reproduce and to transmit disease, female mosquitoes must obtain blood meals and locate appropriate sites for egg laying (oviposition). While distinct sensory cues drive each behavior, humidity contributes to both. Here, we identify the mosquito's humidity sensors (hygrosensors). Using generalizable approaches designed to simplify genetic analysis in non-traditional model organisms, we demonstrate that the ionotropic receptor Ir93a mediates mosquito hygrosensation as well as thermosensation. We further show that Ir93a-dependent sensors drive human host proximity detection and blood-feeding behavior, consistent with the overlapping short-range heat and humidity gradients these targets generate. After blood feeding, gravid females require Ir93a to seek high humidity associated with preferred egg-laying sites. Reliance on Ir93a-dependent sensors to promote blood feeding and locate potential oviposition sites is shared between the malaria vector Anopheles gambiae and arbovirus vector Aedes aegypti. These Ir93a-dependent systems represent potential targets for efforts to control these human disease vectors.
Collapse
Affiliation(s)
- Willem J Laursen
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Gonzalo Budelli
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Ruocong Tang
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Elaine C Chang
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Rachel Busby
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Shruti Shankar
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Rachel Gerber
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Chloe Greppi
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Rebecca Albuquerque
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| | - Paul A Garrity
- Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA.
| |
Collapse
|
50
|
Saraiva JF, Dos Santos Barroso JF, Santos Neto NF, Rabelo Furtado NV, Carvalho DP, Ribeiro KA, Pereira Lima JB, Galardo AKR. Oviposition Activity of Mansonia Species in Areas Along the Madeira River, Brazilian Amazon Rainforest. J Am Mosq Control Assoc 2023; 39:52-56. [PMID: 37043604 DOI: 10.2987/22-7099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Mansonia are aggressive mosquito species that are abundant in aquatic ecosystems where the macrophyte plants occur. These mosquitoes are commonly found across the Amazon/Solimões River basin. However, little is known about the oviposition behavior of these species. In the present study, we registered observations on the oviposition activity of 3 species: Mansonia amazonensis, Ma. humeralis, and Ma. cf. titillans, in 5 species of macrophytes in the vicinities of the Madeira River, Porto Velho, State of Rondônia, Brazil. Overall, 197 egg batches were collected. A greater amount of egg batches was found in Salvinia molesta as compared with other macrophytes sampled. In addition, 2 new oviposition habitats were noted in Ludwigia helmintorrhiza and Limnobium spongia. These findings will be important to understand the reproductive dynamics of these mosquitoes in the Brazilian Amazon basin.
Collapse
|