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Treudler R. Emerging and Novel Elicitors of Anaphylaxis: Collegium Internationale Allergologicum Update 2024. Int Arch Allergy Immunol 2024:1-9. [PMID: 38527454 DOI: 10.1159/000537958] [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: 09/28/2023] [Accepted: 02/19/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Anaphylaxis represents the most severe end of the spectrum of allergic reactions. Frequent elicitors of anaphylaxis are insects, foods, and drugs. This paper summarizes recent development with regard to emerging and novel elicitors of anaphylaxis. SUMMARY Food allergens on the rise include pulses (like pea, chickpea), seeds (hemp, chia), nuts (cashew), pseudograins (buckwheat, quinoa), fruits, and microalgae. Novel foods are foods that were not consumed to any significant extent in the European Union before May 1997, which includes four edible insects (mealworm, migratory locust, house cricket, and buffalo worm). Recent investigations have pointed out the risk of anaphylaxis associated with the consumption of yellow mealworm for people allergic to shellfish and house dust mites. In Europe, fire ants (mostly Solenopsis invicta) and Vespa velutina nigrithorax represent invasive species, which account for increasing numbers of anaphylactic reactions. Also, several new drugs, especially biologicals, have been associated with anaphylaxis. KEY MESSAGES Elicitors of anaphylaxis are changing as a result of (i) increase in demand for plant-based food, (ii) introduction of novel foods, (iii) spreading of allergens by climate changes and globalization, or (iv) due to exposure to newly developed drugs.
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Affiliation(s)
- Regina Treudler
- Charité - Universitätsmedizin Berlin, Institute of Allergology IFA, Berlin, Germany
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de Andrade ARM, Cardoso DC, Cristiano MP. Assessing ploidy levels and karyotype structure of the fire ant Solenopsissaevissima Smith, 1855 (Hymenoptera, Formicidae, Myrmicinae). Comp Cytogenet 2023; 17:59-73. [PMID: 38059050 PMCID: PMC10696605 DOI: 10.3897/compcytogen.17.100945] [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: 01/24/2023] [Accepted: 03/07/2023] [Indexed: 12/08/2023]
Abstract
The family Formicidae is composed of ants that organize themselves into castes in which every individual has a joint organizational function. Solenopsis Westwood, 1840 is an ant genus with opportunistic and aggressive characteristics, known for being invasive species and stings that cause burning in humans. This genus is particularly difficult to classify and identify since its morphology provides few indications for species differentiation. For this, a tool that has been useful for evolutionary and taxonomic studies is cytogenetics. Here, we cytogenetically studied Solenopsissaevissima Smith, 1855 from Ouro Preto, Minas Gerais, Brazil. We evaluated the occurrence of polyploid cells in individuals and colonies by conventional cytogenetics. A total of 450 metaphases were analyzed and counted. Chromosome counts of individuals and colonies showed varied numbers of ploidies, from n = 16 to 8n = 128. The karyomorphometrical approach allowed determination of the following karyotypes: n = 10 m + 4 sm + 2 st, 2n = 20 m + 8 sm + 4 st, and 4n = 40 m + 16 sm + 8 st. Polyploidy can be found naturally in individuals and colonies and may represent an adaptative trait related to widespread distribution and invasion ability of new habitats.
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Affiliation(s)
- Ananda Ribeiro Macedo de Andrade
- Genetics and Evolution of Ants Research Group, Universidade Federal de Ouro Preto, Ouro Preto, MG – 35400-000, BrazilUniversidade Federal de Ouro PretoOuro PretoBrazil
| | - Danon Clemes Cardoso
- Genetics and Evolution of Ants Research Group, Universidade Federal de Ouro Preto, Ouro Preto, MG – 35400-000, BrazilUniversidade Federal de Ouro PretoOuro PretoBrazil
| | - Maykon Passos Cristiano
- Genetics and Evolution of Ants Research Group, Universidade Federal de Ouro Preto, Ouro Preto, MG – 35400-000, BrazilUniversidade Federal de Ouro PretoOuro PretoBrazil
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Sakamoto H, Goka K. Efficiency of ant-control agents in colony-level oral toxicity tests using Tetramorium tsushimae (Hymenoptera: Formicidae) for post-establishment control of the red imported fire ant, Solenopsis invicta (Hymenoptera: Formicidae). Appl Entomol Zool 2022; 58:25-33. [PMID: 36245437 PMCID: PMC9547751 DOI: 10.1007/s13355-022-00800-x] [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: 02/01/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED The red imported fire ant Solenopsis invicta Buren (Hymenoptera: Formicidae) causes serious damage worldwide as an invasive alien species. The species has expanded its range to the Pacific Rim since 2000s and Japan has faced its multiple introductions since 2017. While colony-level control methods are urgently needed, testing living colonies of the unestablished species is challenging especially due to various restrictions under the COVID-19 pandemic. Here, we proposed alternative long-term toxicity assays using artificial colonies of Tetramorium tsushimae Emery (Hymenoptera: Formicidae), a Japanese native species belonging to the same subfamily (Myrmicinae) as S. invicta. We conducted an acute toxicity test to determine if T. tsushimae is a suitable substitute for S. invicta using fipronil and found the LD50 value in T. tsushimae was close to that in S. invicta. Then, we conducted the long-term toxicity test with fipronil and two insect growth regulators (pyriproxyfen and etoxazole) using artificial colonies of T. tsushimae. All workers and larvae in the fipronil-treated colonies died within 3 days of treatment initiation. Emergence of new workers was observed after 18 days in the etoxazole-treated and control colonies, but not in the pyriproxyfen-treated colonies. We concluded that fipronil was the most promising insecticide for post-establishment control, and pyriproxyfen was effective as a toxic-bait agent for colony-level control. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13355-022-00800-x.
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Affiliation(s)
- Hironori Sakamoto
- Biodiversity Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-0053 Japan
| | - Koichi Goka
- Biodiversity Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-0053 Japan
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Valles SM, Oliver JB, Addesso KM, Perera OP. Unique venom proteins from Solenopsis invicta x Solenopsis richteri hybrid fire ants. Toxicon X 2021; 9-10:100065. [PMID: 34027387 PMCID: PMC8131721 DOI: 10.1016/j.toxcx.2021.100065] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/29/2021] [Accepted: 05/03/2021] [Indexed: 11/16/2022] Open
Abstract
The Solenopsis venom protein 2 transcript was amplified, sequenced, probed, and analyzed from Solenopsis invicta x Solenopsis richteri hybrid ant colonies (hybrids) collected from across Tennessee to determine the extent of introgression of each parent allele (Solenopsis invicta venom protein 2 [Soli2] and Solenopsis richteri venom protein 2 [Solr2]). Chemotaxonomic analyses of venom alkaloids and cuticular hydrocarbons were used to categorize hybrid colonies and their relative relatedness to each parent species. Hybrid colonies were chosen randomly from each chemotaxonomic hybridization category, including "very near S. richteri," "near S. richteri," "near S. invicta," and "very near S. invicta." Lateral flow immunoassays for detection of the Soli2 and Solr2 venom proteins were largely in agreement with the chemotaxonomic analyses for the very near S. richteri (100% Solr2) and very near S. invicta (80% Soli2, 20% Soli2 + Solr2 detected in the sample) groups, while Soli2 and Solr2 were reported in 60% and 40% in the near S. invicta and near S. richteri chemotaxonomic groups. Analysis of transcripts from the hybrid colonies revealed a sequence with 100% identity to Soli2 (GenBank Accession L09560) and three unique sequences, which we identify as Solenopsis hybrid venom protein 2 (Solh2; GenBank Accession MT150127), Solenopsis hybrid truncated venom protein 2 (Solh2Tr97; Genbank Accession MT150129), and Solenopsis richteri venom protein 2, D to A change at position 69 (Solr2A69; GenBank Accession MT150128). The predicted open reading frame for Solh2 and Solh2Tr97 revealed sequences unique to hybrid ants, with Solh2Tr97an alternatively spliced form. A third unique sequence, Solr2A69, is likely the correct sequence for Solr2, which appears to have been published previously with a sequencing error (GenBank Accession P35776).
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Affiliation(s)
- Steven M Valles
- Center for Medical, Agricultural and Veterinary Entomology, United States Department of Agriculture, Agricultural Research Service, 1600, SW 23rd Drive, Gainesville, FL, USA
| | - Jason B Oliver
- Tennessee State University, College of Agriculture, Otis L. Floyd Nursery Research Center, McMinnville, TN, 37110, USA
| | - Karla M Addesso
- Tennessee State University, College of Agriculture, Otis L. Floyd Nursery Research Center, McMinnville, TN, 37110, USA
| | - Omaththage P Perera
- Southern Insect Management Research Unit, United States Department of Agriculture, Agricultural Research Service, 141 Experiment Station Road, Stoneville, MS, USA
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Li Q, Zhao F, Li J, Tao Q, Gao J, Lu YY, Wang L. Effects of maximum residue limit of triflumezopyrim exposure on fitness of the red imported fire ant Solenopsis invicta. PeerJ 2019; 7:e8241. [PMID: 31844593 PMCID: PMC6910108 DOI: 10.7717/peerj.8241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 11/19/2019] [Indexed: 11/30/2022] Open
Abstract
The impact of exposure to free feeding concentrations of triflumezopyrim to the red imported fire ant, Solenopsis invicta, in maximum residue tolerances for 56 days was investigated to understand whether triflumezopyrim, a novel neonicotinoid, poses unacceptable risks to the environment. Our results demonstrated that neither 0.5 μg/ml nor 0.2 μg/ml triflumezopyrim have a significant impact on the growth of the S. invicta colony and their food consumption (sugar water and locusts) during the length of treatment. While both 0.5 μg/ml and 0.2 μg/ml triflumezopyrim improved the grasping ability of S. invicta, and 0.5 μg/ml not 0.2 μg/ml triflumezopyrim increased their rate of locomotion. In addition, although 0.5 μg/ml and 0.2 μg/ml triflumezopyrim increased their individual aggressiveness index, the probability of the survival of S. invicta was not impacted by triflumezopyrim treatments in aggressive group encounters. This study suggests that triflumezopyrim did not have a negative impact on the fitness of S. invicta at 0.5 μg/ml and 0.2 μg/ml exposures.
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Affiliation(s)
- Qiting Li
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Fei Zhao
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Jiayi Li
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - QiuHong Tao
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - JiaQian Gao
- Guangdong Tianhe Agricultural Means of Production Co., Ltd., Guangzhou, Guangdong, China
| | - Yong-Yue Lu
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Lei Wang
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
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Rasool KG, Husain M, Salman S, Tufail M, Sukirno S, Aldawood AS. DNA barcoding of the fire ant genus Solenopsis Westwood (Hymenoptera: Formicidae) from the Riyadh region, the Kingdom of Saudi Arabia. Saudi J Biol Sci 2019; 27:184-188. [PMID: 31889834 PMCID: PMC6933196 DOI: 10.1016/j.sjbs.2019.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/18/2019] [Accepted: 06/30/2019] [Indexed: 11/29/2022] Open
Abstract
The ant genus Solenopsis Westwood, 1840 is the largest in Myrmicinae subfamily having almost 200 described species worldwide. They are commonly distributed in the tropics and temperate areas of the world. Some invasive Solenopsis species are very dreadful. We have already reported a fire ant species, Solenopsis saudiensis Sharaf & Aldawood, 2011, identified using traditional morphometric approaches of species identification. Present study was carried out to develop DNA Barcoding to identify Solenopsis saudiensis and to elucidate genetic structure of the various S. saudiensis populations across their distribution range in Riyadh, Saudi Arabia. The comparison of DNA barcodes showed no genetic diversity among six populations and a queen from S. saudiensis analyzed from the Riyadh region. This genetic resemblance probably reflects their adaptation toward a specific habitat, thus constituting a single and strong gene pool. Our comprehensive field survey did not provide any evidence of Solenopsis species except S. saudiensis in the Riyadh region. Solenopsis saudiensis populations were only found around date palm trees indicating their strong association with date palm groves. Moreover, S. saudiensis has 83–86% sequence identity to other Solenopsis spp. from other parts of the world. Interestingly, the highest sequence identity of (86%) was with that of Solenopsis molesta Say, 1836, the thief ant, from the USA. This study provides a working laboratory procedure and a reference library for the identification of Solenopsis saudiensis.
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Affiliation(s)
- Khawaja Ghulam Rasool
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mureed Husain
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Shehzad Salman
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Muhammad Tufail
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia.,Ghazi University, Dera Ghazi Khan, Punjab, Pakistan
| | | | - Abdulrahman S Aldawood
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
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Valles SM, Rivers AR. Nine new RNA viruses associated with the fire ant Solenopsis invicta from its native range. Virus Genes 2019; 55:368-380. [PMID: 30847760 DOI: 10.1007/s11262-019-01652-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 12/21/2018] [Accepted: 02/15/2019] [Indexed: 12/11/2022]
Abstract
The red imported fire ant (Solenopsis invicta) escaped its natural enemies when it was introduced into North America in the 1930s from South America. US efforts have focused on discovery of natural enemies, like viruses, to provide sustainable control of the ant. Nine new virus genomes were sequenced from the invasive fire ant Solenopsis invicta using metagenomic RNA sequencing. The virus genomes were verified by Sanger sequencing and random amplification of cDNA ends reactions. In addition to the nine new virus genomes, the previously described Solenopsis viruses were also detected, including Solenopsis invicta virus 1 (SINV-1), SINV-2, SINV-3, SINV-4, SINV-5, and Solenopsis invicta densovirus. The virus sequences came from S. invicta workers, larvae, pupae, and dead workers taken from midden piles collected from across the ant's native range in Formosa, Argentina. One of the new virus genomes (Solenopsis invicta virus 6) was also detected in populations of North American S. invicta. Phylogenetic analysis of the RNA dependent RNA polymerase, the entire nonstructural polyprotein, and genome characteristics were used to tentatively taxonomically place these new virus genome sequences; these include four new species of Dicistroviridae, one Polycipiviridae, one Iflaviridae, one Totiviridae, and two genome sequences that were too taxonomically divergent to be placed with certainty. The S. invicta virome is the best characterized from any ant species and includes 13 positive-sense, single-stranded RNA viruses (Solenopsis invicta virus 1 to Solenopsis invicta virus 13), one double-stranded RNA virus (Solenopsis midden virus), and one double-stranded DNA virus (Solenopsis invicta densovirus). These new additions to the S. invicta virome offer potentially new classical biological control agents for S. invicta.
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Affiliation(s)
- Steven M Valles
- Center for Medical, Agricultural and Veterinary Entomology, USDA-ARS, Gainesville, FL, USA.
| | - Adam R Rivers
- Genomics and Bioinformatics Research Unit, USDA-ARS, Gainesville, FL, USA
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Srisong H, Sukprasert S, Klaynongsruang S, Daduang J, Daduang S. Identification, expression and characterization of the recombinant Sol g 4.1 protein from the venom of the tropical fire ant Solenopsis geminata. J Venom Anim Toxins Incl Trop Dis 2018; 24:23. [PMID: 30181738 PMCID: PMC6116302 DOI: 10.1186/s40409-018-0159-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/03/2018] [Indexed: 11/17/2022] Open
Abstract
Background Fire ant venom is a complex mixture consisting of basic piperidine alkaloids, various biologically active peptides and protein components, including a variety of major allergenic proteins. Tropical fire ant Solenopsis geminata is an important stinging ant species that causes anaphylaxis and serious medical problems. Although the biological activities of allergenic venom proteins that are unique to ant venom, particularly Solenopsis 2 and 4, are still unknown, these proteins are believed to play important roles in mediating the effects of the piperidine derivatives in the venom. Methods In the present study, the cDNA cloning, sequencing and three-dimensional structure of Sol g 4.1 venom protein are described. The recombinant Sol g 4.1 protein (rSol g 4.1) was produced in E. coli, and its possible function as a hydrophobic binding protein was characterized by paralyzing crickets using the 50% piperidine dose (PD50). Moreover, an antiserum was produced in mice to determine the allergenic properties of Sol g 4.1, and the antiserum was capable of binding to Sol g 4.1, as determined by Western blotting. Results The molecular weight of Sol g 4.1 protein is 16 kDa, as determined by SDS-PAGE. The complete cDNA is 414 bp in length and contains a leader sequence of 19 amino acids. The protein consists of six cysteines that presumably form three disulfide bonds, based on a predicted three-dimensional model, creating the interior hydrophobic pocket and stabilizing the structure. The rSol g 4.1 protein was expressed in inclusion bodies, as determined by SDS-PAGE. Dialysis techniques were used to refold the recombinant protein into the native form. Its secondary structure, which primarily consists of α-helices, was confirmed by circular dichroism analysis, and the three-dimensional model was also verified. The results of allergenic analysis performed on mice showed that the obtained protein was predicted to be allergenically active. Moreover, we report on the possible role of the Sol g 4.1 venom protein, which significantly reduced the PD50 from 0.027 to 0.013% in paralyzed crickets via synergistic effects after interactions with piperidine alkaloids. Conclusions The primary structure of Sol g 4.1 showed high similarity to that of venom proteins in the Solenopsis 2 and 4 family. Those proteins are life-threatening and produce IgE-mediated anaphylactic reactions in allergic individuals. The possible function of this protein is the binding of the interior hydrophobic pockets with piperidine alkaloids, as determined by the analysis of the structural model and PD50 test. Electronic supplementary material The online version of this article (10.1186/s40409-018-0159-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hathairat Srisong
- 1Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Sophida Sukprasert
- 2Division of Integrative Medicine, Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, 12120 Thailand
| | - Sompong Klaynongsruang
- 1Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Jureerut Daduang
- 3Department of Clinical Chemistry, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Sakda Daduang
- 1Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002 Thailand.,4Division of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002 Thailand
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Pan F, Lu Y, Wang L. Toxicity and sublethal effects of sulfoxaflor on the red imported fire ant, Solenopsis invicta. Ecotoxicol Environ Saf 2017; 139:377-383. [PMID: 28189779 DOI: 10.1016/j.ecoenv.2017.02.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 11/10/2016] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 06/06/2023]
Abstract
To understand whether sulfoxaflor, a novel neonicotinoid, poses unacceptable risks to the environment, it is important to assess its effects on nontarget insects. Therefore, the effects of short-term exposure (28 days) of free-feeding sublethal concentrations (1-2μg/ml) of sulfoxaflor to the red imported fire ant, Solenopsis invicta, were investigated. The following parameters were evaluated to determine the impact of exposure: colony growth, food consumption (sugar water and locusts), and interspecific interactions. Sulfoxaflor exposure produced significant negative effects on S. invicta colony growth, with cumulative colony weight losses of 83.36% and 100.00% after treatment with 1μg/ml and 2μg/ml, respectively. The consumption of sugar water (containing sulfoxaflor) of surviving colonies decreased with increasing sulfoxaflor concentration. Moreover, the consumption of locusts decreased after treatment with 2μg/ml, but not 1μg/ml, sulfoxaflor. Sulfoxaflor treatment for 14 days led to reduced aggressiveness of S. invicta workers in interspecific confrontations (S. invicta vs. unexposed Pheidole fervida), and their probability of survival of aggressive encounters was reduced significantly to 48% of that of control ants. Our results indicate that sublethal concentrations of sulfoxaflor are likely to have a negative impact on ants.
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Affiliation(s)
- Fengxiang Pan
- Red Imported Fire Ant Research Centre, South China Agricultural University, Guangzhou, China 510642
| | - Yongyue Lu
- Red Imported Fire Ant Research Centre, South China Agricultural University, Guangzhou, China 510642.
| | - Lei Wang
- Red Imported Fire Ant Research Centre, South China Agricultural University, Guangzhou, China 510642.
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McCormick GL, Robbins TR, Cavigelli SA, Langkilde T. Ancestry trumps experience: Transgenerational but not early life stress affects the adult physiological stress response. Horm Behav 2017; 87:115-121. [PMID: 27864050 DOI: 10.1016/j.yhbeh.2016.11.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 10/17/2016] [Accepted: 11/09/2016] [Indexed: 12/30/2022]
Abstract
Exposure to stressors can affect an organism's physiology and behavior as well as that of its descendants (e.g. through maternal effects, epigenetics, and/or selection). We examined the relative influence of early life vs. transgenerational stress exposure on adult stress physiology in a species that has populations with and without ancestral exposure to an invasive predator. We raised offspring of eastern fence lizards (Sceloporus undulatus) from sites historically invaded (high stress) or uninvaded (low stress) by predatory fire ants (Solenopsis invicta) and determined how this different transgenerational exposure to stress interacted with the effects of early life stress exposure to influence the physiological stress response in adulthood. Offspring from these high- and low-stress populations were exposed weekly to either sub-lethal attack by fire ants (an ecologically relevant stressor), topical treatment with a physiologically-appropriate dose of the stress-relevant hormone, corticosterone (CORT), or a control treatment from 2 to 43weeks of age. Several months after treatments ended, we quantified plasma CORT concentrations at baseline and following restraint, exposure to fire ants, and adrenocorticotropic hormone (ACTH) injection. Exposure to fire ants or CORT during early life did not affect lizard stress physiology in adulthood. However, offspring of lizards from populations that had experienced multiple generations of fire ant-invasion exhibited more robust adult CORT responses to restraint and ACTH-injection compared to offspring from uninvaded populations. Together, these results indicate that transgenerational stress history may be at least as important, if not more important, than early life stress in affecting adult physiological stress responses.
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Affiliation(s)
- Gail L McCormick
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA; The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Travis R Robbins
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Sonia A Cavigelli
- The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Tracy Langkilde
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA; The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
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Abstract
BACKGROUND Centromeres are essential for accurate chromosome segregation, yet sequence conservation is low even among closely related species. Centromere drive predicts rapid turnover because some centromeric sequences may compete better than others during female meiosis. In addition to sequence composition, longer centromeres may have a transmission advantage. RESULTS We report the first observations of extremely long centromeres, covering on average 34 % of the chromosomes, in the red imported fire ant Solenopsis invicta. By comparison, cytological examination of Solenopsis geminata revealed typical small centromeric constrictions. Bioinformatics and molecular analyses identified CenSol, the major centromeric satellite DNA repeat. We found that CenSol sequences are very similar between the two species but the CenSol copy number in S. invicta is much greater than that in S. geminata. In addition, centromere expansion in S. invicta is not correlated with the duplication of CenH3. Comparative analyses revealed that several closely related fire ant species also possess long centromeres. CONCLUSIONS Our results are consistent with a model of simple runaway centromere expansion due to centromere drive. We suggest expanded centromeres may be more prevalent in hymenopteran insects, which use haplodiploid sex determination, than previously considered.
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Affiliation(s)
- Yu-Ching Huang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Chih-Chi Lee
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Chia-Yi Kao
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Ni-Chen Chang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
- Laboratory of Insect Social Evolution, The Rockefeller University, New York, NY USA
| | - Chung-Chi Lin
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - DeWayne Shoemaker
- United States Department of Agriculture, Agricultural Research Service, Gainesville, FL USA
- Entomology and Plant Pathology Department, University of Tennessee, Knoxville, TN USA
| | - John Wang
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
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Aguiar AR, Alvarenga ES, Lopes MC, Santos IBD, Galdino TV, Picanço MC. Active insecticides for Diaphania hyalinata selective for the natural enemy Solenopsis saevissima. J Environ Sci Health B 2016; 51:579-588. [PMID: 27192015 DOI: 10.1080/03601234.2016.1181897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 06/05/2023]
Abstract
The objective of this study was to determine the toxicity of the nine synthetic dienamides against the insect pest Diaphania hyalinata (melonworm) and the selectivity of these substances for the predator Solenopsis saevissima (fire ant). Four bioassays were conducted. To begin with, the dienamides that caused high mortality of D. hyalinata have been selected. In the second bioassay the dose-mortality curves of the selected dienamides have been constructed. In the third bioassay, the survival curves for D. hyalinata and the elapsed time to kill 50% of their population have been determined. In the fourth biological test, the selectivity of the substances to the predator S. saevissima has been evaluated. The most active (2E,4E)-N-butylhexa-2,4-dienamide 3d has killed 95% of the melonworm, D. hyalinata, and less than 10% of the natural enemy S. saevissima. The results presented by this compound are superior to the outcome displayed by the commercial insecticide Malathion®. Three of the dienamides prepared in this manuscript have proven to be selective in killing the pest, but not the beneficial insect.
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Affiliation(s)
- Alex R Aguiar
- a Chemistry Department , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - Elson S Alvarenga
- a Chemistry Department , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - Mayara C Lopes
- b Entomology Department , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | | | - Tarcisio V Galdino
- b Entomology Department , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - Marcelo C Picanço
- b Entomology Department , Universidade Federal de Viçosa , Viçosa , MG , Brazil
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Zhang QH, McDonald DL, Hoover DR, Aldrich JR, Schneidmiller RG. North American Invasion of the Tawny Crazy Ant (Nylanderia fulva) Is Enabled by Pheromonal Synergism from Two Separate Glands. J Chem Ecol 2015; 41:853-8. [PMID: 26315627 DOI: 10.1007/s10886-015-0622-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 05/01/2015] [Revised: 07/07/2015] [Accepted: 08/14/2015] [Indexed: 11/28/2022]
Abstract
A new invader, the "tawny crazy ant", Nylanderia fulva (Hymenoptera: Formicidae; Formicinae), is displacing the red imported fire ant, Solenopsis invicta (Formicidae: Myrmicinae), in the southern U.S., likely through its superior chemical arsenal and communication. Alone, formic acid is unattractive, but this venom (= poison) acid powerfully synergizes attraction of tawny crazy ants to volatiles from the Dufour's gland secretion of N. fulva workers, including the two major components, undecane and 2-tridecanone. The unexpected pheromonal synergism between the Dufour's gland and the venom gland appears to be another key factor, in addition to previously known defensive and detoxification semiochemical features, for the successful invasion and domination of N. fulva in the southern U.S. This synergism is an efficient mechanism enabling N. fulva workers to outcompete Solenopsis and other ant species for food and territory. From a practical standpoint, judicious point-source release formulation of tawny crazy ant volatiles may be pivotal for enhanced attract-and-kill management of this pest.
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Affiliation(s)
- Qing-He Zhang
- Sterling International, Inc., 3808 N. Sullivan Rd., Bldg. 16, Spokane, WA, 99216, USA.
| | - Danny L McDonald
- Texas Research Institute for Environmental Studies, Sam Houston State University, 2424 Sam Houston Avenue, Suite B-8, Box 2506, Huntsville, TX, 77341, USA
| | - Doreen R Hoover
- Sterling International, Inc., 3808 N. Sullivan Rd., Bldg. 16, Spokane, WA, 99216, USA
| | - Jeffrey R Aldrich
- Jeffrey R. Aldrich consulting LLC, P. O. Box 7887, Santa Cruz, CA, 95061, USA.,Associate, Department of Entomology and Nematology, University of California, Davis, CA, 95616, USA
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