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Aparna S, Kumar ARV, Sotelo-Cardona P, Srinivasan R. Host plant selection is linked to performance in Phthorimaea absoluta (Lepidoptera: Gelechiidae). ENVIRONMENTAL ENTOMOLOGY 2024; 53:665-676. [PMID: 38828479 DOI: 10.1093/ee/nvae044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/17/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024]
Abstract
The evolution of oviposition preference in insects is considered a key evolutionary strategy in the context of host-plant interaction. It is hypothesized that insects maximize the survival and fitness of the subsequent generations by preferring specific host plant(s), known as the "preference-performance hypothesis." In this study, we tested whether adult host preference reflects the immature performance in an oligophagous insect, Phthorimaea absoluta Meyrick, a rapidly emerging invasive pest in Asia, Africa, and Europe. Based on a preliminary survey of the potential host plants of P. absoluta, we selected 6 Solanaceae species, namely, tomato, potato, eggplant, black nightshade, sweet pepper, and tobacco, for the oviposition preference studies. The results indicated that the tomato was the most preferred host in no-, dual- and multiple-choice assays, followed by potato, eggplant, and black nightshade. Subsequently, the insect life-table parameters were found to be superior on tomato compared to other hosts. The order of oviposition preference on the host plants was strongly correlated with the life-table parameters of P. absoluta. Thus, we provide clear evidence for the preference-performance hypothesis in the host selection behavior of P. absoluta. We also emphasize the necessity of conducting oviposition behavior research at various geographic locations to develop tailor-made integrated pest management programs.
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Affiliation(s)
- Shivanna Aparna
- Safe and Sustainable Value Chains Flagship Program, World Vegetable Center, South and Central Asia, ICRISAT Campus, Hyderabad, Telangana 502324, India
- Department of Agricultural Entomology, University of Agricultural Sciences, GKVK, Bengaluru, Karnataka 560065, India
| | - Amritha R V Kumar
- Department of Agricultural Entomology, University of Agricultural Sciences, GKVK, Bengaluru, Karnataka 560065, India
| | - Paola Sotelo-Cardona
- Safe and Sustainable Value Chains Flagship Program, World Vegetable Center, P.O. Box 42, Shanhua, Tainan 74199, Taiwan
| | - Ramasamy Srinivasan
- Safe and Sustainable Value Chains Flagship Program, World Vegetable Center, P.O. Box 42, Shanhua, Tainan 74199, Taiwan
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2
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Qi J, Wang X, Zhang T, Li C, Wang Z. Adult Feeding Experience Determines the Fecundity and Preference of the Henosepilachna vigintioctopunctata (F.) (Coleoptera: Coccinellidae). BIOLOGY 2024; 13:250. [PMID: 38666862 PMCID: PMC11048397 DOI: 10.3390/biology13040250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/01/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024]
Abstract
Both larvae and adults of the Henosepilachna vigintioctopunctata feed on leaves of potatoes, tomatoes, and eggplants. Given the variation in planting times of host plants in the Jianghan Plain, host switching between larvae and adults of H. vigintioctopunctata is inevitable to ensure continuous food availability. We evaluated the effect of consistent versus diverse larval and adult host plant feeding experience on growth performance, fecundity, longevity, and feeding preferences of H. vigintioctopunctata through match-mismatch experiments. Host plant quality significantly influences larval development and adult reproduction. Potatoes are identified as the optimal host plant for H. vigintioctopunctata, whereas eggplants significantly negatively affect the adult fecundity. Adult stage host feeding experience determines the fecundity of H. vigintioctopunctata, irrespective of the larval feeding experience. The fecundity of H. vigintioctopunctata adults on eggplant leaves remains significantly lower than that observed on potato leaves. Similarly, adult H. vigintioctopunctata demonstrate a preference for consuming potato leaves, irrespective of the larval feeding experience. Although host switching between larval and adult stages offers lesser benefits for the performance of herbivorous insects compared to a consistent diet with potato leaves, it maintains H. vigintioctopunctata population continuity amidst shortages of high-quality potato hosts.
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Affiliation(s)
| | | | | | | | - Zailing Wang
- Hubei Engineering Research Center for Pest Forewarning and Management, Institute of Entomology, College of Agriculture, Yangtze University, Jingzhou 434025, China; (J.Q.); (X.W.); (T.Z.); (C.L.)
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3
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Fu H, Xiao G, Yang Z, Hu P. EsigPBP3 Was the Important Pheromone-Binding Protein to Recognize Male Pheromones and Key Eucalyptus Volatiles. Int J Mol Sci 2024; 25:2940. [PMID: 38474187 DOI: 10.3390/ijms25052940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/19/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Pheromone-binding proteins (PBPs) are specific odorant-binding proteins that can specifically recognize insect pheromones. Through transcriptional analysis of the antennae of adult Endoclita signifer, EsigPBP3 was discovered and identified, and EsigPBP3 was found to be highly expressed in the antennae of male moths. Based on the binding characteristics and ability of EsigPBP3, we can find the key ligands and binding site to consider as a target to control the key wood bore E. signifier. In this study, the fluorescence competitive binding assays (FCBA) showed that EsigPBP3 had a high binding affinity for seven key eucalyptus volatiles. Molecular docking analysis revealed that EsigPBP3 had the strongest binding affinity for the sexual pheromone component, (3E,7E)-4,7,11-trimethyl-1,3,7,10-dodecatetraene. Furthermore, same as the result of FCBA, the EsigPBP3 exhibited high binding affinities to key eucalyptus volatiles, eucalyptol, α-terpinene, (E)-beta-ocimene, (-)-β-pinene, and (-)-α-pinene, and PHE35, MET7, VAL10, PHE38, ILE52, and PHE118 are key sites. In summary, EsigPBP3 exhibits high binding affinity to male pheromones and key volatile compounds and the crucial binding sites PHE35, MET7, VAL10, PHE38, ILE52, and PHE118 can act as targets in the recognition of E. signifier pheromones.
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Affiliation(s)
- Hengfei Fu
- Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China
| | - Guipeng Xiao
- Biotechnology, Faculty of Science, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Zhende Yang
- Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China
| | - Ping Hu
- Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China
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4
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Groot AT, Blankers T, Halfwerk W, Burdfield Steel E. The Evolutionary Importance of Intraspecific Variation in Sexual Communication Across Sensory Modalities. ANNUAL REVIEW OF ENTOMOLOGY 2024; 69:21-40. [PMID: 37562048 DOI: 10.1146/annurev-ento-030223-111608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
The evolution of sexual communication is critically important in the diversity of arthropods, which are declining at a fast pace worldwide. Their environments are rapidly changing, with increasing chemical, acoustic, and light pollution. To predict how arthropod species will respond to changing climates, habitats, and communities, we need to understand how sexual communication systems can evolve. In the past decades, intraspecific variation in sexual signals and responses across different modalities has been identified, but never in a comparative way. In this review, we identify and compare the level and extent of intraspecific variation in sexual signals and responses across three different modalities, chemical, acoustic, and visual, focusing mostly on insects. By comparing causes and possible consequences of intraspecific variation in sexual communication among these modalities, we identify shared and unique patterns, as well as knowledge needed to predict the evolution of sexual communication systems in arthropods in a changing world.
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Affiliation(s)
- Astrid T Groot
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Netherlands; , ,
| | - Thomas Blankers
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Netherlands; , ,
| | - Wouter Halfwerk
- Amsterdam Institute for Life and Environment (A-LIFE), VU Amsterdam, Netherlands;
| | - Emily Burdfield Steel
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Netherlands; , ,
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5
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Jarrett BJM, Miller CW. Host Plant Effects on Sexual Selection Dynamics in Phytophagous Insects. ANNUAL REVIEW OF ENTOMOLOGY 2024; 69:41-57. [PMID: 37562047 DOI: 10.1146/annurev-ento-022823-020258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Natural selection is notoriously dynamic in nature, and so, too, is sexual selection. The interactions between phytophagous insects and their host plants have provided valuable insights into the many ways in which ecological factors can influence sexual selection. In this review, we highlight recent discoveries and provide guidance for future work in this area. Importantly, host plants can affect both the agents of sexual selection (e.g., mate choice and male-male competition) and the traits under selection (e.g., ornaments and weapons). Furthermore, in our rapidly changing world, insects now routinely encounter new potential host plants. The process of adaptation to a new host may be hindered or accelerated by sexual selection, and the unexplored evolutionary trajectories that emerge from these dynamics are relevant to pest management and insect conservation strategies. Examining the effects of host plants on sexual selection has the potential to advance our fundamental understanding of sexual conflict, host range evolution, and speciation, with relevance across taxa.
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Affiliation(s)
- Benjamin J M Jarrett
- School of Natural Sciences, Bangor University, Bangor, United Kingdom;
- Department of Biology, Lund University, Lund, Sweden
- Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA;
| | - Christine W Miller
- Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA;
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Plasticity in Chemical Host Plant Recognition in Herbivorous Insects and Its Implication for Pest Control. BIOLOGY 2022; 11:biology11121842. [PMID: 36552352 PMCID: PMC9775997 DOI: 10.3390/biology11121842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022]
Abstract
Chemical communication is very important in herbivorous insects, with many species being important agricultural pests. They often use olfactory cues to find their host plants at a distance and evaluate their suitability upon contact with non-volatile cues. Responses to such cues are modulated through interactions between various stimuli of biotic and abiotic origin. In addition, the response to the same stimulus can vary as a function of, for example, previous experience, age, mating state, sex, and morph. Here we summarize recent advances in the understanding of plant localization and recognition in herbivorous insects with a focus on the interplay between long- and short-range signals in a complex environment. We then describe recent findings illustrating different types of plasticity in insect plant choice behavior and the underlying neuronal mechanisms at different levels of the chemosensory pathway. In the context of strong efforts to replace synthetic insecticides with alternative pest control methods, understanding combined effects between long- and close-range chemical cues in herbivore-plant interactions and their complex environment in host choice are crucial to develop effective plant protection methods. Furthermore, plasticity of behavioral and neuronal responses to chemical cues needs to be taken into account to develop effective sustainable pest insect control through behavioral manipulation.
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7
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Exploring plant volatile-mediated interactions between native and introduced plants and insects. Sci Rep 2022; 12:15450. [PMID: 36104363 PMCID: PMC9474884 DOI: 10.1038/s41598-022-18479-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/12/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractIn invasion scenarios, native and introduced species co-occur creating new interactions and modifying existing ones. Many plant–plant and plant–insect interactions are mediated by volatile organic compounds (VOCs), however, these have seldom been studied in an invasion context. To fill this knowledge gap, we explored some interactions mediated by VOCs between native and introduced plants and insects in a New Zealand system. We investigated whether a native plant, Leptospermum scoparium (mānuka), changes its volatile profile when grown adjacent to two European introduced plants, Calluna vulgaris (heather) and Cytisus scoparius (Scotch broom), in a semi-field trial using potted plants without above- or below-ground physical contact. We also investigated the influence of plant cues on the host-searching behaviour of two beetles, the native Pyronota festiva (mānuka beetle), and the introduced biocontrol agent Lochmaea suturalis (heather beetle), by offering them their host-plant and non-host volatiles versus clean air, and their combination in a Y-tube olfactometer. As a follow-up, we performed preference/feeding tests in Petri dishes with fresh plant material. Results of the semi-field experiment show a significant reduction in green leaf volatiles, sesquiterpenes and total volatile emissions by mānuka plants neighbouring heather. In the Y-tube assays, the native beetle P. festiva performed poorly in discriminating between host and non-host plants based on plant volatile cues only. However, it performed relatively well in the Petri dish tests, where other cues (i.e., visual, gustatory or tactile) were present. In contrast, the introduced beetle L. suturalis showed high host-specificity in both Y-tube and Petri dish assays. This study illustrates the importance of VOCs in mediating interactions between introduced and native species, suggesting that invasive plants can disrupt native plants’ communication and affect the host-searching behaviour of native insects. It also reinforces the relevance of regular host testing on introduced weed biocontrol agents to avoid unwanted host shifts or host-range expansion.
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8
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Hafeez M, Li X, Ullah F, Zhang Z, Zhang J, Huang J, Khan MM, Chen L, Ren X, Zhou S, Fernández-Grandon GM, Zalucki MP, Lu Y. Behavioral and Physiological Plasticity Provides Insights into Molecular Based Adaptation Mechanism to Strain Shift in Spodoptera frugiperda. Int J Mol Sci 2021; 22:10284. [PMID: 34638623 PMCID: PMC8508907 DOI: 10.3390/ijms221910284] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 12/20/2022] Open
Abstract
How herbivorous insects adapt to host plants is a key question in ecological and evolutionary biology. The fall armyworm, (FAW) Spodoptera frugiperda (J.E. Smith), although polyphagous and a major pest on various crops, has been reported to have a rice and corn (maize) feeding strain in its native range in the Americas. The species is highly invasive and has recently established in China. We compared behavioral changes in larvae and adults of a corn population (Corn) when selected on rice (Rice) and the molecular basis of these adaptational changes in midgut and antennae based on a comparative transcriptome analysis. Larvae of S. frugiperda reared on rice plants continuously for 20 generations exhibited strong feeding preference for with higher larval performance and pupal weight on rice than on maize plants. Similarly, females from the rice selected population laid significantly more eggs on rice as compared to females from maize population. The most highly expressed DEGs were shown in the midgut of Rice vs. Corn. A total of 6430 DEGs were identified between the populations mostly in genes related to digestion and detoxification. These results suggest that potential adaptations for feeding on rice crops, may contribute to the current rapid spread of fall armyworm on rice crops in China and potentially elsewhere. Consistently, highly expressed DEGs were also shown in antennae; a total of 5125 differentially expressed genes (DEGs) s were identified related to the expansions of major chemosensory genes family in Rice compared to the Corn feeding population. These results not only provide valuable insight into the molecular mechanisms in host plants adaptation of S. frugiperda but may provide new gene targets for the management of this pest.
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Affiliation(s)
- Muhammad Hafeez
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
- State Key Laboratory of Rice Biology, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiaowei Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | - Farman Ullah
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China;
| | - Zhijun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | - Jinming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | - Jun Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | - Muhammad Musa Khan
- Key Laboratory of Bio-Pesticide Innovation and Application, South China Agricultural University, Guangzhou 510642, China;
| | - Limin Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Key Lab of Biopesticide and Chemical Biology, Ministry of Education & Fujian Province Key Laboratory of Insect Ecology, College of Plant Protection, Fujian Agriculture and Forest University, Fuzhou 350002, China
| | - Xiaoyun Ren
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | - Shuxing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
| | | | - Myron P. Zalucki
- School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia;
| | - Yaobin Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (M.H.); (X.L.); (Z.Z.); (J.Z.); (J.H.); (L.C.); (X.R.); (S.Z.)
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Karlsson Green K. The effects of host plant species and larval density on immune function in the polyphagous moth Spodoptera littoralis. Ecol Evol 2021; 11:10090-10097. [PMID: 34367561 PMCID: PMC8328413 DOI: 10.1002/ece3.7802] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 04/09/2021] [Accepted: 05/18/2021] [Indexed: 11/07/2022] Open
Abstract
Immune functions are costly, and immune investment is usually dependent on the individual's condition and resource availability. For phytophagous insects, host plant quality has large effects on performance, for example growth and survival, and may also affect their immune function. Polyphagous insects often experience a large variation in quality among different host plant species, and their immune investment may thus vary depending on which host plant species they develop on. Larvae of the polyphagous moth Spodoptera littoralis have previously been found to exhibit density-dependent prophylaxis as they invest more in certain immune responses in high population densities. In addition, the immune response of S. littoralis has been shown to depend on nutrient quality in experiments with artificial diet. Here, I studied the effects of natural host plant diet and larval density on a number of immune responses to understand how host plant species affects immune investment in generalist insects, and whether the density-dependent prophylaxis could be mediated by host plant species. While host plant species in general did not mediate the density-dependent immune expression, particular host plant species was found to increase larval investment in certain functions of the immune system. Interestingly, these results indicate that different host plants may provide a polyphagous species with protection against different kinds of antagonisms. This insight may contribute to our understanding of the relationship between preference and performance in generalists, as well as having applied consequences for sustainable pest management.
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Affiliation(s)
- Kristina Karlsson Green
- Department of Plant Protection BiologySwedish University of Agricultural SciencesAlnarpSweden
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Magsi FH, Luo Z, Zhao Y, Li Z, Cai X, Bian L, Chen Z. Electrophysiological and Behavioral Responses of Dasychira baibarana (Lepidoptera: Lymantriidae) to Tea Plant Volatiles. ENVIRONMENTAL ENTOMOLOGY 2021; 50:589-598. [PMID: 33677497 DOI: 10.1093/ee/nvab016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Indexed: 06/12/2023]
Abstract
Tea black tussock moth, Dasychira baibarana (Matsumura) (Lepidoptera: Lymantriidae), is a devastating pest species of the tea plant in China. Here, we evaluated the responses of D. baibarana to tea plant volatiles using gas chromatography coupled electroantennographic detection (GC-EAD), eleclectroantennography (EAG), and a Y-tube olfactometer. In total, 11 of 18 analyzed compounds elicited GC-EAD responses from test insects. GC-EAD bio-active compounds were further investigated using EAG and behavioral responses. In the EAG analysis, male moths had significantly greater responses to four compounds [(Z)-3-hexenyl butyrate, (Z)-3-hexen-1-ol, ocimene and benzyl alcohol] than female moths. For females, maximum EAG amplitudes, were recorded in response to linalool, (Z)-3-hexenyl hexanoate and (Z)-jasmone. In EAG and behavioral bio-assays, the responses of both sexes were dose independent. In behavioral bio-assays male moths responding significantly to (Z)-3-hexen-1-ol, ocimene, (Z)-3-hexenyl butyrate, linalool, benzyl alcohol, and (Z)-jasmone at various concentrations. For females, significant behavioral responses were observed to (Z)-3-hexenyl hexanoate, followed by (Z)-jasmone, linalool, ocimene, and benzyl alcohol. However, neither sex was sensitive to 4 of the 11 tested compounds, phenyethyl alcohol, phenylacetonitrile, (E)-nerolidol, and indole. The present results showed that tea plant volatiles influenced the behavior of D. baibarana moths, which will greatly contribute in developing eco-friendly control strategies for D. baibarana, through the application of a blend of compounds that showed significant EAG and behavioral responses or a blend combined with female-produced sex pheromones.
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Affiliation(s)
- Fida Hussain Magsi
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Zongxiu Luo
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Yingjie Zhao
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Zhaoqun Li
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Xiaoming Cai
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Lei Bian
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
| | - Zongmao Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Xihu District, Hangzhou, China
- Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Xihu District, Hangzhou, China
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11
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Westwick RR, Rittschof CC. Insects Provide Unique Systems to Investigate How Early-Life Experience Alters the Brain and Behavior. Front Behav Neurosci 2021; 15:660464. [PMID: 33967715 PMCID: PMC8097038 DOI: 10.3389/fnbeh.2021.660464] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/16/2021] [Indexed: 12/24/2022] Open
Abstract
Early-life experiences have strong and long-lasting consequences for behavior in a surprising diversity of animals. Determining which environmental inputs cause behavioral change, how this information becomes neurobiologically encoded, and the functional consequences of these changes remain fundamental puzzles relevant to diverse fields from evolutionary biology to the health sciences. Here we explore how insects provide unique opportunities for comparative study of developmental behavioral plasticity. Insects have sophisticated behavior and cognitive abilities, and they are frequently studied in their natural environments, which provides an ecological and adaptive perspective that is often more limited in lab-based vertebrate models. A range of cues, from relatively simple cues like temperature to complex social information, influence insect behavior. This variety provides experimentally tractable opportunities to study diverse neural plasticity mechanisms. Insects also have a wide range of neurodevelopmental trajectories while sharing many developmental plasticity mechanisms with vertebrates. In addition, some insects retain only subsets of their juvenile neuronal population in adulthood, narrowing the targets for detailed study of cellular plasticity mechanisms. Insects and vertebrates share many of the same knowledge gaps pertaining to developmental behavioral plasticity. Combined with the extensive study of insect behavior under natural conditions and their experimental tractability, insect systems may be uniquely qualified to address some of the biggest unanswered questions in this field.
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Affiliation(s)
- Rebecca R Westwick
- Department of Entomology, University of Kentucky, Lexington, KY, United States
| | - Clare C Rittschof
- Department of Entomology, University of Kentucky, Lexington, KY, United States
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12
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Petrén H, Gloder G, Posledovich D, Wiklund C, Friberg M. Innate preference hierarchies coupled with adult experience, rather than larval imprinting or transgenerational acclimation, determine host plant use in Pieris rapae. Ecol Evol 2021; 11:242-251. [PMID: 33437426 PMCID: PMC7790653 DOI: 10.1002/ece3.7018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/21/2020] [Accepted: 10/23/2020] [Indexed: 01/17/2023] Open
Abstract
The evolution of host range drives diversification in phytophagous insects, and understanding the female oviposition choices is pivotal for understanding host specialization. One controversial mechanism for female host choice is Hopkins' host selection principle, where females are predicted to increase their preference for the host species they were feeding upon as larvae. A recent hypothesis posits that such larval imprinting is especially adaptive in combination with anticipatory transgenerational acclimation, so that females both allocate and adapt their offspring to their future host. We study the butterfly Pieris rapae, for which previous evidence suggests that females prefer to oviposit on host individuals of similar nitrogen content as the plant they were feeding upon as larvae, and where the offspring show higher performance on the mother's host type. We test the hypothesis that larval experience and anticipatory transgenerational effects influence female host plant acceptance (no-choice) and preference (choice) of two host plant species (Barbarea vulgaris and Berteroa incana) of varying nitrogen content. We then test the offspring performance on these hosts. We found no evidence of larval imprinting affecting female decision-making during oviposition, but that an adult female experience of egg laying in no-choice trials on the less-preferred host Be. incana slightly increased the P. rapae propensity to oviposit on Be. incana in subsequent choice trials. We found no transgenerational effects on female host acceptance or preference, but negative transgenerational effects on larval performance, because the offspring of P. rapae females that had developed on Be. incana as larvae grew slower on both hosts, and especially on Be. incana. Our results suggest that among host species, preferences are guided by hard-wired preference hierarchies linked to species-specific host traits and less affected by larval experience or transgenerational effects, which may be more important for females evaluating different host individuals of the same species.
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Affiliation(s)
| | - Gabriele Gloder
- CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM)Department of Microbial and Molecular Systems (M2S)KU LeuvenLeuvenBelgium
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13
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Silva R, Clarke AR. The "sequential cues hypothesis": a conceptual model to explain host location and ranking by polyphagous herbivores. INSECT SCIENCE 2020; 27:1136-1147. [PMID: 31448531 DOI: 10.1111/1744-7917.12719] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/29/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
Successfully locating a host plant is crucial for an insect herbivore to feed and/or oviposit. However, locating a host within a complex environment that may contain an array of different plant species is a difficult task. This is particularly the case for polyphagous herbivores, which must locate a host within environments that may simultaneously contain multiple suitable and unsuitable hosts. Here we review the mechanisms of host selection used by polyphagous herbivores, as well as exploring how prior experience may modify a generalist's response to host cues. We show that recent research demonstrates that polyphagous herbivores have the capacity to detect both common cues from multiple host species, as well as specific cues from individual host species. This creates a paradox in that generalists invariably rank hosts when given a choice, a finding at odds with the "neural limitations" hypothesis that says generalist insect herbivores should not have the neural capacity to identify cues specific to every possible host. To explain this paradox we propose a model, akin to parasitoid host location, that postulates that generalist herbivores use different cues sequentially in host location. We propose that initially common host cues, associated with all potential hosts, are used to place the herbivore within the host habitat and that, in the absence of any other host cues, these cues are sufficient in themselves to lead to host location. As such they are true "generalist" cues. However, once within the host habitat, we propose that the presence of a smaller group of cues may lead to further host searching and the location of preferred hosts: these are "specialist" cues. This model explains the current conflict in the literature where generalists can respond to both common and specific host-plant cues, while also exhibiting specialist and generalist host use behavior under different conditions.
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Affiliation(s)
- Rehan Silva
- School of Earth, Environmental and Biological Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Anthony R Clarke
- School of Earth, Environmental and Biological Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
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14
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Llopis-Giménez A, Carrasco-Oltra T, Jacquin-Joly E, Herrero S, Crava CM. Coupling Transcriptomics and Behaviour to Unveil the Olfactory System of Spodoptera exigua Larvae. J Chem Ecol 2020; 46:1017-1031. [PMID: 33150456 DOI: 10.1007/s10886-020-01224-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/14/2020] [Accepted: 10/06/2020] [Indexed: 01/28/2023]
Abstract
Insect chemosensation is crucial for many aspects related to food seeking, enemy avoidance, and reproduction. Different families of receptors and binding proteins interact with chemical stimuli, including odorant receptors (ORs), ionotropic receptors (IRs), gustatory receptors (GRs), odorant binding proteins (OBPs) and chemosensory proteins (CSPs). In this work, we describe the chemosensory-related gene repertoire of the worldwide pest Spodoptera exigua (Lepidoptera: Noctuidae), focusing on the transcripts expressed in larvae, which feed on many horticultural crops producing yield losses. A comprehensive de novo assembly that includes reads from chemosensory organs of larvae and adults, and other larval tissues, enabled us to annotate 200 candidate chemosensory-related genes encoding 63 ORs, 28 IRs, 38 GRs, 48 OBPs and 23 CSPs. Of them, 51 transcripts are new annotations. Fifty ORs are expressed in larval heads based on RNA-seq and reverse transcription PCR analyses. Fourteen OBPs are expressed in larval, but not in adult heads. We also observe that expression profiles of ORs are strongly and non-specifically up-regulated upon pre-exposure of larvae to single volatile organic compounds (VOCs). Finally, we develop a behavioural assay to study the attraction/repellence to VOCs in S. exigua larvae and thus identify candidate ecologically relevant odours. A single-dose assay demonstrated that 1-hexanol triggers attraction and indole repels larvae at any timepoint. This work establishes the foundation for the study of chemosensation in S. exigua larvae, allowing further studies aimed to characterize chemosensory-related genes that underlie the ecologically relevant behaviours of larvae.
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Affiliation(s)
- Angel Llopis-Giménez
- Department of Genetics and Institut Universitari de Biotecnología i Biomedicina (BIOTECMED), Universitat de València, Dr Moliner 50, 46100, Burjassot, Spain
| | - Tamara Carrasco-Oltra
- Department of Genetics and Institut Universitari de Biotecnología i Biomedicina (BIOTECMED), Universitat de València, Dr Moliner 50, 46100, Burjassot, Spain
| | - Emmanuelle Jacquin-Joly
- Institute of Ecology and Environmental Sciences of Paris, INRAE, Sorbonne Université, CNRS, IRD, UPEC, University P7, F-78000, Versailles, France
| | - Salvador Herrero
- Department of Genetics and Institut Universitari de Biotecnología i Biomedicina (BIOTECMED), Universitat de València, Dr Moliner 50, 46100, Burjassot, Spain.
| | - Cristina M Crava
- Department of Genetics and Institut Universitari de Biotecnología i Biomedicina (BIOTECMED), Universitat de València, Dr Moliner 50, 46100, Burjassot, Spain.
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15
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A sensitive period for the induction of host plant preference in a generalist herbivorous insect. Anim Behav 2020. [DOI: 10.1016/j.anbehav.2020.08.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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16
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Rösvik A, Lhomme P, Khallaf MA, Anderson P. Plant-Induced Transgenerational Plasticity Affecting Performance but Not Preference in a Polyphagous Moth. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00254] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Gámez AM, León SP. Preimaginal conditioning affects oviposition choices in the silkworm moth (Bombyx mori). Behav Processes 2020; 175:104121. [PMID: 32259625 DOI: 10.1016/j.beproc.2020.104121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/17/2020] [Accepted: 03/27/2020] [Indexed: 10/24/2022]
Abstract
Nowadays we can find a number of experiments that have showed the importance of learning in several situations related with survival of many animal species. For instance, knowledge acquired in the early stages of life could be crucial on the choice of egg-laying site. In this study we explored the influence of Pavlovian conditioning of silkworm larvae on their oviposition behaviour as adult female moths. For this, the larvae learning have to survive the metamorphosis and be shown in oviposition choice. In acquisition phase, a larvae group experienced an odour (conditioned stimulus) paired with mulberry leaves (unconditioned stimulus), another one experienced the odour and the mulberry leaves in an unpaired way and the last one experienced the odour alone during this phase. The results show that when these larvae became moths, only the first group preferred to lay their eggs near the odour when it was present during the test, so that associations learned during the larval stage seem to influence oviposition behaviour during adulthood.
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Affiliation(s)
- A Matías Gámez
- Universidad de Córdoba, Spain; Universidad de Jaén, Spain.
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18
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Naino Jika AK, Le Ru B, Capdevielle-Dulac C, Chardonnet F, Silvain JF, Kaiser L, Dupas S. Population genetics of the Mediterranean corn borer (Sesamia nonagrioides) differs between wild and cultivated plants. PLoS One 2020; 15:e0230434. [PMID: 32191750 PMCID: PMC7081988 DOI: 10.1371/journal.pone.0230434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 03/01/2020] [Indexed: 11/19/2022] Open
Abstract
The population genetic structure of crop pest populations gives information about their spatial ecology, which helps in designing management strategies. In this paper, we investigated the genetic structure of the Mediterranean Corn Borer (MCB), Sesamia nonagrioides Lefèbvre (Lepidoptera: Noctuidae), one of the most important maize pests in the Mediterranean countries, using microsatellite markers for the first time in this species. Insects were collected in twenty-five locations in southwest and southeast France from cultivated and wild host plants (Zea mays, Sorghum halepense and Typha domingensis). Contrary to what has been reported so far in France, we found that MCB populations could be locally abundant on wild poales plants. Analysis was carried out at 11 polymorphic microsatellite markers. Molecular variance was significantly determined by geography, then by host plant, with 17% and 4%, respectively, when considered as a major effect, and with 14% and 1%, respectively, when considered as a marginal effect in permutational analysis. Multidimensional scaling (MDS) and GENELAND Bayesian clustering suggested that populations infecting wild plants (T. domingensis and S. halepense) were more structured locally than those affecting cultivated maize. In S. halepense, significant Isolation By Distance (IBD) indicated that this factor could explain genetic differentiation of the moth populations. In T. domingensis, local population differentiation was strong but did not depend on distance. The implication of this absence of population structure in maize and the heterogeneity of population genetics patterns in wild plants are discussed in the context of the population dynamics hypothesis and population management strategies.
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Affiliation(s)
- Abdel Kader Naino Jika
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
- * E-mail:
| | - B. Le Ru
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
- ICIPE- African Insect Science for Food and Health, Kasarani, Nairobi, Kenya
| | - C. Capdevielle-Dulac
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
| | - F. Chardonnet
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
| | - J. F. Silvain
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
| | - L. Kaiser
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
| | - S. Dupas
- Laboratoire Evolution, Génomes, Comportement et Ecologie, UMR CNRS, IRD & Université Paris-Sud Orsay, Gif-sur-Yvette cedex, France
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19
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Abstract
In China, the genus Adelphocoris (Hemiptera: Miridae) includes three dominant pest species (A. suturalis, A. lineolatus and A. fasciaticollis), which cause great damage to cotton, alfalfa and other crops. In this study, we examined the role of the major volatile organic compounds from plants in host location by these three insects. Gas chromatography-electroantennography and gas chromatography/mass spectrometry analyses identified seven electroantennogram (EAG)-active compounds from 11 host plants. Although the insects responded to all of these compounds in EAG trials, some compounds did not elicit behavioral responses in Y-tube olfactometer bioassays. Adelphocoris suturalis adults showed behavioral responses to four EAG-active compounds, n-butyl ether, butyl acrylate, butyl propionate and butyl butyrate. These four compounds, in addition to p-xylene, were also attractive to A. lineolatus adults. However, A. fasciaticollis adults were attracted only by butyl acrylate, butyl propionate and butyl butyrate. In field trials, A. suturalis and A. fasciaticollis were each attracted to five individual compounds (m-xylene, n-butyl ether, butyl acrylate, butyl butyrate and butyl propionate for A. suturalis and m-xylene, butyl acrylate, butyl butyrate, butyl propionate, and 1,8-cineole for A. fasciaticollis). By contrast, A. lineolatus aduts were attracted to six individual compounds, m-xylene, p-xylene, n-butyl ether, butyl acrylate, butyl butyrate, and butyl propionate. These compounds may be important in host plant location by the Adelphocoris species, and may be useful for developing attractants for adults of these species.
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20
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Gowri V, Dion E, Viswanath A, Piel FM, Monteiro A. Transgenerational inheritance of learned preferences for novel host plant odors inBicyclus anynanabutterflies. Evolution 2019; 73:2401-2414. [DOI: 10.1111/evo.13861] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 09/21/2019] [Indexed: 12/31/2022]
Affiliation(s)
- V. Gowri
- Department of Biological SciencesNational University of Singapore 14 Science Drive 4 117543 Singapore
| | - Emilie Dion
- Department of Biological SciencesNational University of Singapore 14 Science Drive 4 117543 Singapore
| | - Athmaja Viswanath
- Department of Biological SciencesNational University of Singapore 14 Science Drive 4 117543 Singapore
| | - Florence Monteiro Piel
- Department of Biological SciencesNational University of Singapore 14 Science Drive 4 117543 Singapore
| | - Antónia Monteiro
- Department of Biological SciencesNational University of Singapore 14 Science Drive 4 117543 Singapore
- Yale‐NUS‐College 6 College Avenue East 138614 Singapore
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21
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Kemp DJ. Manipulation of natal host modifies adult reproductive behaviour in the butterfly Heliconius charithonia. Proc Biol Sci 2019; 286:20191225. [PMID: 31506053 DOI: 10.1098/rspb.2019.1225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Advances in understanding non-genetic inheritance have prompted broader interest in environmental effects. One way in which such effects may influence adaptation is via the transmission of acquired habitat biases. Here I explore how natal experience influences adult host orientation in the oligophagous passion vine butterfly Heliconius charithonia. As an exemplar of the 'pupal mating' system, this species poses novelty among diurnal Lepidoptera for the extent to which male as well as female reproductive behaviours are guided by olfactory host cues. I sampled wild adult females breeding exclusively upon Passiflora incarnata, assigned their offspring to develop either upon this species or its local alternative Passiflora suberosa, and then assessed the behaviour of F1 adults in a large rainforest enclosure. Despite the fact that juvenile performance was superior upon P. incarnata, females oviposited preferentially upon their assigned natal species. Mate-seeking males also indicated a bias for the proximity of their natal host, and there was evidence for assortative mating based upon host treatment, although these data are less robust. This study is, to my knowledge, the first to support Hopkins' hostplant principle in butterflies, and points to inducible host preferences capable of reinforcing ecological segregation and ultimately accelerating evolutionary divergence in sympatry.
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Affiliation(s)
- Darrell J Kemp
- Department of Biological Sciences, Faculty of Science and Engineering, Macquarie University, North Ryde, New South Wales, 2019 Australia
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22
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Little CM, Chapman TW, Hillier NK. Considerations for Insect Learning in Integrated Pest Management. JOURNAL OF INSECT SCIENCE (ONLINE) 2019; 19:6. [PMID: 31313814 PMCID: PMC6635889 DOI: 10.1093/jisesa/iez064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Indexed: 06/10/2023]
Abstract
The past 100 yr have seen dramatic philosophical shifts in our approach to controlling or managing pest species. The introduction of integrated pest management in the 1970s resulted in the incorporation of biological and behavioral approaches to preserve ecosystems and reduce reliance on synthetic chemical pesticides. Increased understanding of the local ecosystem, including its structure and the biology of its species, can improve efficacy of integrated pest management strategies. Pest management strategies incorporating insect learning paradigms to control insect pests or to use insects to control other pests can mediate risk to nontarget insects, including pollinators. Although our understanding of insect learning is in its early stages, efforts to integrate insect learning into pest management strategies have been promising. Due to considerable differences in cognitive abilities among insect species, a case-by-case assessment is needed for each potential application of insect learning within a pest management strategy.
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Affiliation(s)
- Catherine M Little
- Department of Biology, Acadia University, Wolfville, NS, Canada
- Department of Biology, Memorial University of Newfoundland and Labrador, St. John’s, NL, Canada
| | - Thomas W Chapman
- Department of Biology, Memorial University of Newfoundland and Labrador, St. John’s, NL, Canada
| | - N Kirk Hillier
- Department of Biology, Acadia University, Wolfville, NS, Canada
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23
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Dion E, Monteiro A, Nieberding CM. The Role of Learning on Insect and Spider Sexual Behaviors, Sexual Trait Evolution, and Speciation. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2018.00225] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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The role of learning in the oviposition behavior of the silkworm moth (Bombyx mori). Behav Processes 2018; 157:286-290. [DOI: 10.1016/j.beproc.2018.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/30/2018] [Accepted: 10/29/2018] [Indexed: 11/21/2022]
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25
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Learning in herbivorous insects: dispersing aphids spend less time evaluating familiar than novel non-host plant species. Oecologia 2018; 188:1049-1057. [PMID: 30374675 DOI: 10.1007/s00442-018-4293-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 10/23/2018] [Indexed: 10/28/2022]
Abstract
For many organisms, dispersal may be a high-risk activity, and dispersers are likely to have behavioral, physiological, or other adaptations that increase the probability they will successfully settle in new habitat. Dispersing aphids, for example, are small-bodied, relatively weak flyers that must navigate through a complex landscape where non-host species may be much more common than suitable hosts are. While previous research has focused on how dispersing aphids locate and evaluate host species, little is known about how they interact with the non-host species they encounter while host searching. Here, I report on an experiment to test the hypothesis that dispersers of Aphis fabae spend less time evaluating non-host species with which they have had prior experience than novel non-host species. Aphids consistently spent less time in contact with familiar non-host species than novel non-host species, but the magnitude of this effect varied for different non-host species. Aphids that had previously encountered rose spent less time interacting with rose than with raspberry or goldenrod, and aphids that had previously encountered raspberry spent less time interacting with raspberry than with goldenrod. Aphids that had previously encountered goldenrod showed a less pronounced and statistically non-significant reduction in time spent interacting with goldenrod relative to either raspberry or rose. The ability to recognize previously encountered non-hosts may allow aphids to navigate more efficiently through an environment in which they face many more non-hosts than hosts, and therefore increase the probability that a disperser will ultimately locate and settle on an appropriate host plant.
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26
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Borrero-Echeverry F, Bengtsson M, Nakamuta K, Witzgall P. Plant odor and sex pheromone are integral elements of specific mate recognition in an insect herbivore. Evolution 2018; 72:2225-2233. [PMID: 30095166 PMCID: PMC6220987 DOI: 10.1111/evo.13571] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/21/2018] [Indexed: 01/04/2023]
Abstract
Specific mate recognition relies on the chemical senses in most animals, and especially in nocturnal insects. Two signal types mediate premating olfactory communication in terrestrial habitats: sex pheromones, which blend into an atmosphere of plant odorants. We show that host plant volatiles affect the perception of sex pheromone in males of the African cotton leafworm Spodoptera littoralis and that pheromone and plant volatiles are not perceived as independent messages. In clean air, S. littoralis males are attracted to single synthetic pheromone components or even the pheromone of a sibling species, oriental cotton leafworm S. litura. Presence of host plant volatiles, however, reduces the male response to deficient or heterospecific pheromone signals. That plant cues enhance discrimination of sex pheromone quality confirms the idea that specific mate recognition in noctuid moths has evolved in concert with adaptation to host plants. Shifts in either female host preference or sex pheromone biosynthesis give rise to new communication channels that have the potential to initiate or contribute to reproductive isolation.
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Affiliation(s)
| | - Marie Bengtsson
- Chemical Ecology Unit, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp 230 53, Sweden
| | - Kiyoshi Nakamuta
- Graduate School of Horticulture, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Peter Witzgall
- Chemical Ecology Unit, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp 230 53, Sweden
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27
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Xue HJ, Segraves KA, Wei J, Zhang B, Nie RE, Li WZ, Yang XK. Chemically mediated sexual signals restrict hybrid speciation in a flea beetle. Behav Ecol 2018. [DOI: 10.1093/beheco/ary105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Huai-Jun Xue
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Kari A Segraves
- Department of Biology, Syracuse University, Syracuse, NY, USA
- Archbold Biological Station, Venus, FL, USA
| | - Jing Wei
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Bin Zhang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Rui-E Nie
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wen-Zhu Li
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Xing-Ke Yang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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28
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Lemmen-Lechelt JK, Wist TJ, Evenden ML. State-Dependent Plasticity in Response to Host-Plant Volatiles in a Long-Lived Moth, Caloptilia fraxinella (Lepidoptera: Gracillariidae). J Chem Ecol 2018; 44:276-287. [DOI: 10.1007/s10886-018-0927-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/06/2018] [Accepted: 01/22/2018] [Indexed: 01/03/2023]
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29
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Hu P, Li HL, Zhang HF, Luo QW, Guo XR, Wang GP, Li WZ, Yuan G. Experience-based mediation of feeding and oviposition behaviors in the cotton bollworm: Helicoverpa armigera (Lepidoptera: Noctuidae). PLoS One 2018; 13:e0190401. [PMID: 29298318 PMCID: PMC5752029 DOI: 10.1371/journal.pone.0190401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 11/22/2017] [Indexed: 11/19/2022] Open
Abstract
Experience is well known to affect sensory-guided behaviors in many herbivorous insects. Here, we investigated the effects of natural feeding experiences of Helicoverpa armigera larvae on subsequent preferences of larval approaching and feeding, as well as the effect of host-contacting experiences of mated females on subsequent ovipositional preference. The results show that the extent of experience-induced preference, expressed by statistical analysis, depended on the plant species paired with the experienced host plant. Larval feeding preference was much easier to be induced by natural feeding experience than larval approaching preference. Naïve larvae, reared on artificial diet, exhibited clear host-ranking order as follows: tobacco ≥ cotton > tomato > hot pepper. Feeding experiences on hot pepper and tobacco could always induce positive feeding preference, while those on cotton often induced negative effect, suggesting that the direction of host plant experience-induced preference is not related to innate feeding preference. Inexperienced female adults ranked tobacco as the most preferred ovipositional host plant, and this innate preference could be masked or weakened but could not be reversed by host-contacting experience after emergence.
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Affiliation(s)
- Pu Hu
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Hui-ling Li
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou, Henan Province, China
| | - Hong-fei Zhang
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Qian-wen Luo
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Xian-ru Guo
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Gao-ping Wang
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Wei-zheng Li
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
- * E-mail: (WZL); (GY)
| | - Guohui Yuan
- Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China
- * E-mail: (WZL); (GY)
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Host plant associated enhancement of immunity and survival in virus infected caterpillars. J Invertebr Pathol 2018; 151:102-112. [DOI: 10.1016/j.jip.2017.11.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/08/2017] [Accepted: 11/07/2017] [Indexed: 01/02/2023]
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Lhomme P, Carrasco D, Larsson M, Hansson B, Anderson P. A context-dependent induction of natal habitat preference in a generalist herbivorous insect. Behav Ecol 2017. [DOI: 10.1093/beheco/arx173] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Patrick Lhomme
- Swedish University of Agricultural Sciences, Division of Chemical Ecology, Department of Plant Protection Biology, Alnarp, Sweden
- Max Planck Institute for Chemical Ecology, Department of Evolutionary Neuroethology, Jena, Germany
| | - David Carrasco
- Swedish University of Agricultural Sciences, Division of Chemical Ecology, Department of Plant Protection Biology, Alnarp, Sweden
| | - Mattias Larsson
- Swedish University of Agricultural Sciences, Division of Chemical Ecology, Department of Plant Protection Biology, Alnarp, Sweden
| | - Bill Hansson
- Swedish University of Agricultural Sciences, Division of Chemical Ecology, Department of Plant Protection Biology, Alnarp, Sweden
- Max Planck Institute for Chemical Ecology, Department of Evolutionary Neuroethology, Jena, Germany
| | - Peter Anderson
- Swedish University of Agricultural Sciences, Division of Chemical Ecology, Department of Plant Protection Biology, Alnarp, Sweden
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Wiklund C, Norén K, Ryman N, Friberg M. Local monophagy and between-site diversity in host use in the European swallowtail butterfly, Papilio machaon. Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lehmann P, Nylin S, Gotthard K, Carlsson MA. Idiosyncratic development of sensory structures in brains of diapausing butterfly pupae: implications for information processing. Proc Biol Sci 2017; 284:20170897. [PMID: 28679728 PMCID: PMC5524504 DOI: 10.1098/rspb.2017.0897] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 05/30/2017] [Indexed: 11/21/2022] Open
Abstract
Diapause is an important escape mechanism from seasonal stress in many insects. A certain minimum amount of time in diapause is generally needed in order for it to terminate. The mechanisms of time-keeping in diapause are poorly understood, but it can be hypothesized that a well-developed neural system is required. However, because neural tissue is metabolically costly to maintain, there might exist conflicting selective pressures on overall brain development during diapause, on the one hand to save energy and on the other hand to provide reliable information processing during diapause. We performed the first ever investigation of neural development during diapause and non-diapause (direct) development in pupae of the butterfly Pieris napi from a population whose diapause duration is known. The brain grew in size similarly in pupae of both pathways up to 3 days after pupation, when development in the diapause brain was arrested. While development in the brain of direct pupae continued steadily after this point, no further development occurred during diapause until temperatures increased far after diapause termination. Interestingly, sensory structures related to vision were remarkably well developed in pupae from both pathways, in contrast with neuropils related to olfaction, which only developed in direct pupae. The results suggest that a well-developed visual system might be important for normal diapause development.
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Affiliation(s)
- Philipp Lehmann
- Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Sören Nylin
- Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Karl Gotthard
- Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden
- Bolin Centre for Climate Research, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Mikael A Carlsson
- Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden
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Rowen E, Gutensohn M, Dudareva N, Kaplan I. Carnivore Attractant or Plant Elicitor? Multifunctional Roles of Methyl Salicylate Lures in Tomato Defense. J Chem Ecol 2017; 43:573-585. [PMID: 28600687 DOI: 10.1007/s10886-017-0856-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/28/2017] [Accepted: 05/30/2017] [Indexed: 01/07/2023]
Abstract
Synthetic plant volatile lures attract natural enemies, but may have non-target effects due to the multifunctional nature of volatile signals. For example, methyl salicylate (MeSA) is used to attract predators, yet also serves as a signaling hormone involved in plant pathogen defense. We investigated the consequences of deploying MeSA lures to attract predators for tomato (Solanum lycopersicum) defense against herbivores. To understand the spatial distribution of the lure's effect, we exposed tomatoes in the field to MeSA along a linear distance gradient and induced defenses by simulating feeding by hornworm caterpillars in a fully crossed factorial design (+/- MeSA, +/- herbivory). Subsequently, we analyzed activity of several defensive proteins (protease inhibitors, polyphenol oxidase, peroxidase), development of hornworm larvae (Manduca sexta), growth of fungal pathogens (Cladosporium and Alternaria), and attractiveness to herbivores and predators. Overall, MeSA-exposed plants were more resistant to both insects and pathogens. Secondary pathogen infection was reduced by 25% in MeSA exposed plants, possibly due to elevated polyphenol oxidase activity. Interestingly, we found that lures affected plant pathogen defenses equivalently across all distances (up to 4 m away) indicating that horizontal diffusion of a synthetic volatile may be greater than previously assumed. While thrips avoided colonizing hornworm- damaged tomato plants, this induced resistance was not observed upon pre-exposure to MeSA, suggesting that MeSA suppresses the repellant effect induced by herbivory. Thus, using MeSA lures in biological control may inadvertently protect crops from pathogens, but has mixed effects on plant resistance to insect herbivores.
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Affiliation(s)
- Elizabeth Rowen
- Department of Entomology, Pennsylvania State University, University Park, PA, 16802, USA.
| | - Michael Gutensohn
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV, 26505, USA
| | - Natalia Dudareva
- Department of Biochemistry, Whistler Hall, Purdue University, West Lafayette, IN, 47907, USA
| | - Ian Kaplan
- Department of Entomology, Smith Hall, Purdue University, West Lafayette, IN, 47907, USA
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Łukowski A, Giertych MJ, Walczak U, Baraniak E, Karolewski P. Light conditions affect the performance of Yponomeuta evonymellus on its native host Prunus padus and the alien Prunus serotina. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:208-216. [PMID: 27628311 DOI: 10.1017/s0007485316000791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The bird cherry ermine moth, Yponomeuta evonymellus L., is considered an obligatory monophagous insect pest that feeds only on native European Prunus padus L. In recent years, however, increased larval feeding on alien P. serotina Ehrh. has been observed. In both species, general defoliation is extensive for shade grown trees, whereas it is high in P. padus, but very low in P. serotina, when trees are grown in full light conditions. The aim of the present study was to identify how the plant host species and light conditions affect the performance of Y. evonymellus. The influence of host species and light condition on their growth and development, characterized by the parameters of pupation, adult eclosion, body mass, potential fecundity, and wing size, was measured in a 2 × 2 experimental design (two light treatments, two hosts). In comparison with high light (HL) conditions, a greater percentage of pupation and a longer period and less dynamic adult emerge was observed under low light (LL) conditions. The effect of host species on these parameters was not significant. In contrast, mass, fecundity and all of the studied wing parameters were higher in larvae that grazed on P. padus than on P. serotina. Similarly the same parameters were also higher on shrubs in HL as compared with those grown under LL conditions. In general, light conditions, rather than plant species, were more often and to a greater extent, responsible for differences in the observed parameters of insect development and potential fecundity.
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Affiliation(s)
- A Łukowski
- Institute of Dendrology, Polish Academy of Sciences,Parkowa 5,62-035 Kórnik,Poland
| | - M J Giertych
- Institute of Dendrology, Polish Academy of Sciences,Parkowa 5,62-035 Kórnik,Poland
| | - U Walczak
- Department of Systematic Zoology, Faculty of Biology,Adam Mickiewicz University,Umultowska 89,61-614 Poznań,Poland
| | - E Baraniak
- Department of Systematic Zoology, Faculty of Biology,Adam Mickiewicz University,Umultowska 89,61-614 Poznań,Poland
| | - P Karolewski
- Institute of Dendrology, Polish Academy of Sciences,Parkowa 5,62-035 Kórnik,Poland
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36
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Exploring the Effects of Plant Odors, from Tree Species of Differing Host Quality, on the Response of Lymantria dispar Males to Female Sex Pheromones. J Chem Ecol 2017; 43:243-253. [DOI: 10.1007/s10886-017-0825-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/16/2017] [Accepted: 02/14/2017] [Indexed: 11/26/2022]
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Abstract
The relationship between plants and insects is influenced by insects' behavioral decisions during foraging and oviposition. In mutualistic pollinators and antagonistic herbivores, past experience (learning) affects such decisions, which ultimately can impact plant fitness. The higher levels of dietary generalism in pollinators than in herbivores may be an explanation for the differences in learning seen between these two groups. Generalist pollinators experience a high level of environmental variation, which we suggest favors associative learning. Larval herbivores employ habituation and sensitization-strategies useful in their less variable environments. Exceptions to these patterns based on habitats, mobility, and life history provide critical tests of current theory. Relevant plant traits should be under selection to be easily learned and remembered in pollinators and difficult to learn in herbivores. Insect learning thereby has the potential to have an important, yet largely unexplored, role in plant-insect coevolution.
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Affiliation(s)
- Patricia L Jones
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853; ,
| | - Anurag A Agrawal
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853; ,
- Department of Entomology, Cornell University, Ithaca, New York 14853
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38
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Golikhajeh N, Naseri B, Razmjou J. Geographic Origin and Host Cultivar Influence on Digestive Physiology of Spodoptera exigua (Lepidoptera: Noctuidae) Larvae. JOURNAL OF INSECT SCIENCE (ONLINE) 2017; 17:iew104. [PMID: 28069730 PMCID: PMC5270410 DOI: 10.1093/jisesa/iew104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 06/06/2023]
Abstract
Digestive enzymatic activity in three geographic strains (Miandiab, Kalposh and Moghan regions) of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) reared on different sugar beet cultivars (Dorothea, Rozier, Persia and Perimer) was studied under laboratory conditions (25 ± 1 °C, 65 ± 5% RH, and a photo period of 16:8 (L:D) h photoperiod). The results of this study demonstrated that digestive protease and amylase activity of S. exigua larvae was affected by both geographic origin of the pest and host plant cultivar. Three strains reared on the same sugar beet cultivars demonstrated different levels of proteolytic and amylolytic activities in fourth and fifth instars. The highest proteolytic and amylolytic activity, in most cases, was observed in larvae collected from Kalposh region. Among different sugar beet cultivars, the highest protease activity in three strains was observed on cultivars Rozier and Perimer. Nevertheless, the highest amylase activity was seen on cultivar Dorothea, and the lowest activity was seen on cultivar Rozier. This study suggested that variations in digestive enzymatic activity of three geographic strains of S. exigua might be attributed to local adaptation with their local host plant and environmental conditions inherent by larvae.
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Affiliation(s)
- Neshat Golikhajeh
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Bahram Naseri
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Jabraeil Razmjou
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
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39
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Bezzar-Bendjazia R, Kilani-Morakchi S, Aribi N. Larval exposure to azadirachtin affects fitness and oviposition site preference of Drosophila melanogaster. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2016; 133:85-90. [PMID: 27742366 DOI: 10.1016/j.pestbp.2016.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/23/2016] [Accepted: 02/27/2016] [Indexed: 06/06/2023]
Abstract
Azadirachtin, a biorational insecticide, is one of the prominent biopesticide commercialized today and represent an alternative to conventional insecticides. The current study examined the lethal and sublethal effects of azadirachtin on Drosophila melanogaster Meigen, 1830 (Diptera: Drosophilidae) as biological model. Various doses ranging from 0.1 to 2μg were applied topically on early third instar larvae and the cumulative mortality of immature stage was determined. In second series of experiments, azadirachtin was applied at its LD25 (0.28μg) and LD50 (0.67μg) and evaluated on fitness (development duration, fecundity, adult survival) and oviposition site preference with and without choice. Results showed that azadirachtin increased significantly at the two tested doses the duration of larval and pupal development. Moreover, azadirachtin treatment reduced significantly adult's survival of both sex as compared to control. In addition, azadirachtin affected fecundity of flies by a significant reduction of the number of eggs laid. Finally results showed that females present clear preference for oviposition in control medium. Pre-imaginal exposure (L3) to azadirachtin increased aversion to this substance suggesting a memorability of the learned avoidance. The results provide some evidence that larval exposure to azadirachtin altered adult oviposition preference as well as major fitness traits of D. melanogaster. Theses finding may reinforce behavioural avoidance of azadirachtin and contribute as repellent strategies in integrated pest management programmes.
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Affiliation(s)
- Radia Bezzar-Bendjazia
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000 Annaba, Algeria.
| | - Samira Kilani-Morakchi
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000 Annaba, Algeria.
| | - Nadia Aribi
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University of Annaba, 23000 Annaba, Algeria.
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40
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Fei M, Harvey JA, Weldegergis BT, Huang T, Reijngoudt K, Vet LM, Gols R. Integrating Insect Life History and Food Plant Phenology: Flexible Maternal Choice Is Adaptive. Int J Mol Sci 2016; 17:E1263. [PMID: 27527153 PMCID: PMC5000661 DOI: 10.3390/ijms17081263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 07/22/2016] [Accepted: 07/26/2016] [Indexed: 11/17/2022] Open
Abstract
Experience of insect herbivores and their natural enemies in the natal habitat is considered to affect their likelihood of accepting a similar habitat or plant/host during dispersal. Growing phenology of food plants and the number of generations in the insects further determines lability of insect behavioural responses at eclosion. We studied the effect of rearing history on oviposition preference in a multivoltine herbivore (Pieris brassicae), and foraging behaviour in the endoparasitoid wasp (Cotesia glomerata) a specialist enemy of P. brassicae. Different generations of the insects are obligatorily associated with different plants in the Brassicaceae, e.g., Brassica rapa, Brassica nigra and Sinapis arvensis, exhibiting different seasonal phenologies in The Netherlands. Food plant preference of adults was examined when the insects had been reared on each of the three plant species for one generation. Rearing history only marginally affected oviposition preference of P. brassicae butterflies, but they never preferred the plant on which they had been reared. C. glomerata had a clear preference for host-infested B. rapa plants, irrespective of rearing history. Higher levels of the glucosinolate breakdown product 3-butenyl isothiocyanate in the headspace of B. rapa plants could explain enhanced attractiveness. Our results reveal the potential importance of flexible plant choice for female multivoltine insects in nature.
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Affiliation(s)
- Minghui Fei
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands.
| | - Jeffrey A Harvey
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands.
- Section Animal Ecology, Department of Ecological Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.
| | - Berhane T Weldegergis
- Laboratory of Entomology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
| | - Tzeyi Huang
- Laboratory of Entomology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
| | - Kimmy Reijngoudt
- Laboratory of Entomology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
| | - Louise M Vet
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands.
- Laboratory of Entomology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
| | - Rieta Gols
- Laboratory of Entomology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
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Suinyuy TN, Donaldson JS, Johnson SD. Geographical matching of volatile signals and pollinator olfactory responses in a cycad brood-site mutualism. Proc Biol Sci 2016; 282:20152053. [PMID: 26446814 DOI: 10.1098/rspb.2015.2053] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Brood-site mutualisms represent extreme levels of reciprocal specialization between plants and insect pollinators, raising questions about whether these mutualisms are mediated by volatile signals and whether these signals and insect responses to them covary geographically in a manner expected from coevolution. Cycads are an ancient plant lineage in which almost all extant species are pollinated through brood-site mutualisms with insects. We investigated whether volatile emissions and insect olfactory responses are matched across the distribution range of the African cycad Encephalartos villosus. This cycad species is pollinated by the same beetle species across its distribution, but cone volatile emissions are dominated by alkenes in northern populations, and by monoterpenes and a pyrazine compound in southern populations. In reciprocal choice experiments, insects chose the scent of cones from the local region over that of cones from the other region. Antennae of beetles from northern populations responded mainly to alkenes, while those of beetles from southern populations responded mainly to pyrazine. In bioassay experiments, beetles were most strongly attracted to alkenes in northern populations and to the pyrazine compound in southern populations. Geographical matching of cone volatiles and pollinator olfactory preference is consistent with coevolution in this specialized mutualism.
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Affiliation(s)
- Terence N Suinyuy
- School of Life Sciences, University of KwaZulu-Natal, P/Bag X01, Scottsville, Pietermaritzburg 3201, South Africa Kirstenbosch Research Centre, South African National Biodiversity Institute, P/Bag X7, Claremont, Cape Town 7735, South Africa Department of Biological Sciences, University of Cape Town, P/Bag Rondebosch, Cape Town 7701, South Africa
| | - John S Donaldson
- Kirstenbosch Research Centre, South African National Biodiversity Institute, P/Bag X7, Claremont, Cape Town 7735, South Africa Department of Biological Sciences, University of Cape Town, P/Bag Rondebosch, Cape Town 7701, South Africa Research Associate, Fairchild Tropical Botanic Garden, 10901 Old Cutler Road, Coral Gables, Miami, FL 33156, USA
| | - Steven D Johnson
- School of Life Sciences, University of KwaZulu-Natal, P/Bag X01, Scottsville, Pietermaritzburg 3201, South Africa
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Müller T, Müller C. Adult beetles compensate for poor larval food conditions. JOURNAL OF INSECT PHYSIOLOGY 2016; 88:24-32. [PMID: 26906247 DOI: 10.1016/j.jinsphys.2016.02.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 02/11/2016] [Accepted: 02/17/2016] [Indexed: 06/05/2023]
Abstract
Life history traits of herbivores are highly influenced by the quality of their hosts, i.e., the composition of primary and secondary plant metabolites. In holometabolous insects, larvae and adults may face different host plants, which differ in quality. It has been hypothesised that adult fitness is either highest when larval and adult environmental conditions match (environmental matching) or it may be mainly determined by optimal larval conditions (silver spoon effect). Alternatively, the adult stage may be most decisive for the actual fitness, independent of larval food exposure, due to adult compensation ability. To determine the influence of constant versus changing larval and adult host plant experiences on growth performance, fitness and feeding preferences, we carried out a match-mismatch experiment using the mustard leaf beetle, Phaedon cochleariae. Larvae and adults were either constantly reared on watercress (natural host) or cabbage (crop plant) or were switched after metamorphosis to the other host. Growth, reproductive traits and feeding preferences were determined repeatedly over lifetime and host plant quality traits analysed. Differences in the host quality led to differences in the development time and female reproduction. Egg numbers were significantly influenced by the host plant species experienced by the adults. Thus, adults were able to compensate for poor larval conditions. Likewise, the current host experience was most decisive for feeding preferences; in adult beetles a feeding preference was shaped regardless of the larval host plant. Larvae or adults reared on the more nutritious host, cabbage, showed a higher preference for this host. Hence, beetles most likely develop a preference when gaining a direct positive feedback in terms of an improved performance, whereby the current experience matters the most. Highly nutritious crop plants may be, in consequence, all the more exploited by potential pests that may show a high plasticity in reproduction and feeding preferences.
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Affiliation(s)
- Thorben Müller
- Department of Chemical Ecology, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
| | - Caroline Müller
- Department of Chemical Ecology, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany.
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Savković U, ĐorĐević M, Šešlija Jovanović D, Lazarević J, Tucić N, Stojković B. Experimentally induced host-shift changes life-history strategy in a seed beetle. J Evol Biol 2016; 29:837-47. [DOI: 10.1111/jeb.12831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 01/12/2016] [Accepted: 01/13/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Uroš Savković
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
| | - Mirko ĐorĐević
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
| | - Darka Šešlija Jovanović
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
| | - Jelica Lazarević
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
| | - Nikola Tucić
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
| | - Biljana Stojković
- Institute for Biological Research “Siniša Stanković”; University of Belgrade; Belgrade Serbia
- Faculty of Biology; University of Belgrade; Belgrade Serbia
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44
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Preston MD, Forister ML, Pitchford JW, Armsworth PR. Impact of individual movement and changing resource availability on male–female encounter rates in an herbivorous insect. ECOLOGICAL COMPLEXITY 2015. [DOI: 10.1016/j.ecocom.2015.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Kromann SH, Saveer AM, Binyameen M, Bengtsson M, Birgersson G, Hansson BS, Schlyter F, Witzgall P, Ignell R, Becher PG. Concurrent modulation of neuronal and behavioural olfactory responses to sex and host plant cues in a male moth. Proc Biol Sci 2015; 282:20141884. [PMID: 25621329 DOI: 10.1098/rspb.2014.1884] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Mating has profound effects on animal physiology and behaviour, not only in females but also in males, which we show here for olfactory responses. In cotton leafworm moths, Spodoptera littoralis, odour-mediated attraction to sex pheromone and plant volatiles are modulated after mating, producing a behavioural response that matches the physiological condition of the male insect. Unmated males are attracted by upwind flight to sex pheromone released by calling females, as well as to volatiles of lilac flowers and green leaves of the host plant cotton, signalling adult food and mating sites, respectively. Mating temporarily abolishes male attraction to females and host plant odour, but does not diminish attraction to flowers. This behavioural modulation is correlated with a response modulation in the olfactory system, as shown by electro-physiological recordings from antennae and by functional imaging of the antennal lobe, using natural odours and synthetic compounds. An effect of mating on the olfactory responses to pheromone and cotton plant volatiles but not to lilac flowers indicates the presence of functionally independent neural circuits within the olfactory system. Our results indicate that these circuits interconnect and weigh perception of social and habitat odour signals to generate appropriate behavioural responses according to mating state.
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46
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Petit C, Le Ru B, Dupas S, Frérot B, Ahuya P, Kaiser-Arnauld L, Harry M, Calatayud PA. Influence of Dietary Experience on the Induction of Preference of Adult Moths and Larvae for a New Olfactory Cue. PLoS One 2015; 10:e0136169. [PMID: 26288070 PMCID: PMC4544849 DOI: 10.1371/journal.pone.0136169] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 07/30/2015] [Indexed: 11/18/2022] Open
Abstract
In Lepidoptera, host plant selection is first conditioned by oviposition site preference of adult females followed by feeding site preference of larvae. Dietary experience to plant volatile cues can induce larval and adult host plant preference. We investigated how the parent’s and self-experience induce host preference in adult females and larvae of three lepidopteran stem borer species with different host plant ranges, namely the polyphagous Sesamia nonagrioides, the oligophagous Busseola fusca and the monophagous Busseola nairobica, and whether this induction can be linked to a neurophysiological phenotypic plasticity. The three species were conditioned to artificial diet enriched with vanillin from the neonate larvae to the adult stage during two generations. Thereafter, two-choice tests on both larvae and adults using a Y-tube olfactometer and electrophysiological (electroantennography [EAG] recordings) experiments on adults were carried out. In the polyphagous species, the induction of preference for a new olfactory cue (vanillin) by females and 3rd instar larvae was determined by parents’ and self-experiences, without any modification of the sensitivity of the females antennae. No preference induction was found in the oligophagous and monophagous species. Our results suggest that lepidopteran stem borers may acquire preferences for new olfactory cues from the larval to the adult stage as described by Hopkins’ host selection principle (HHSP), neo-Hopkins’ principle, and the concept of ‘chemical legacy.’
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Affiliation(s)
- Christophe Petit
- Noctuid Stem Borer Biodiversity team, Institut de Recherche pour le Développement c/o icipe, African Insect Science for Food and Health, Nairobi, Kenya
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
- * E-mail:
| | - Bruno Le Ru
- Noctuid Stem Borer Biodiversity team, Institut de Recherche pour le Développement c/o icipe, African Insect Science for Food and Health, Nairobi, Kenya
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
| | - Stéphane Dupas
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
| | - Brigitte Frérot
- Unité Mixte de Recherche 1392, Institut d’Ecologie et des Sciences de l’Environnement de Paris, Institut National de la Recherche Agronomique, Versailles, France
| | - Peter Ahuya
- Noctuid Stem Borer Biodiversity team, Institut de Recherche pour le Développement c/o icipe, African Insect Science for Food and Health, Nairobi, Kenya
| | - Laure Kaiser-Arnauld
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
| | - Myriam Harry
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
| | - Paul-André Calatayud
- Noctuid Stem Borer Biodiversity team, Institut de Recherche pour le Développement c/o icipe, African Insect Science for Food and Health, Nairobi, Kenya
- Unité Mixte de Recherche 247, Evolution, Génomes, Comportement et Ecologie, Institut de Recherche pour le Développement, Centre National de la Recherche Scientifique, Gif sur Yvette Cedex, France
- Université Paris-Sud, Orsay, France
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47
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Zhang T, Coates BS, Ge X, Bai S, He K, Wang Z. Male- and Female-Biased Gene Expression of Olfactory-Related Genes in the Antennae of Asian Corn Borer, Ostrinia furnacalis (Guenée) (Lepidoptera: Crambidae). PLoS One 2015; 10:e0128550. [PMID: 26062030 PMCID: PMC4463852 DOI: 10.1371/journal.pone.0128550] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 04/28/2015] [Indexed: 11/19/2022] Open
Abstract
The Asian corn borer (ACB), Ostrinia furnacalis (Guenée), is a destructive pest insect of cultivated corn crops, for which antennal-expressed receptors are important to detect olfactory cues for mate attraction and oviposition. Few olfactory related genes were reported in ACB, so we sequenced and characterized the transcriptome of male and female O. furnacalis antennae. Non-normalized male and female O. furnacalis antennal cDNA libraries were sequenced on the Illumina HiSeq 2000 and assembled into a reference transcriptome. Functional gene annotations identified putative olfactory-related genes; 56 odorant receptors (ORs), 23 odorant binding proteins (OBPs), and 10 CSPs. RNA-seq estimates of gene expression respectively showed up- and down-regulation of 79 and 30 genes in female compared to male antennae, which included up-regulation of 8 ORs and 1 PBP gene in male antennae as well as 3 ORs in female antennae. Quantitative real-time RT-PCR analyses validated strong male antennal-biased expression of OfurOR3, 4, 6, 7, 8, 11, 12, 13 and 14 transcripts, whereas OfurOR17 and 18 were specially expressed in female antennae. Sex-biases gene expression described here provides important insight in gene functionalization, and provides candidate genes putatively involved in environmental perception, host plant attraction, and mate recognition.
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Affiliation(s)
- Tiantao Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Brad S. Coates
- United States Department of Agriculture, Agricultural Research Service, Corn Insects & Crop Genetics Research Unit, Iowa State University, Ames, IA, 50011, United States of America
| | - Xing Ge
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shuxiong Bai
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Kanglai He
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Zhenying Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- * E-mail:
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48
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Nyabuga FN, Carrasco D, Ranåker L, Andersson MN, Birgersson G, Larsson MC, Lundin O, Rundlöf M, Svensson GP, Anderbrant O, Lankinen Å. Field Abundance Patterns and Odor-Mediated Host Choice by Clover Seed Weevils, Apion fulvipes and Apion trifolii (Coleoptera: Apionidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2015; 108:492-503. [PMID: 26470160 DOI: 10.1093/jee/tou099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/10/2014] [Indexed: 06/05/2023]
Abstract
The clover seed weevils Apion fulvipes Geoffroy, 1785 and Apion trifolii L., 1768 (Coleoptera: Apionidae) cause major losses to seed production of white clover (Trifolium repens L.) and red clover (Trifolium pratense L.), respectively. Clover is important as animal forage and an alternative to inorganic fertilizers. Because clover is mainly pollinated by bees, the use of insecticides in management of these weevils is discouraged. To gain basic knowledge for development of alternative management strategies, we investigated weevil field abundance over two growing seasons, as well as feeding and olfactory host preferences by A. fulvipes and A. trifolii. Field trap catches in southern Sweden revealed that white clover was dominated by A. fulvipes and red clover by A. trifolii. For both weevil species, female catches were positively correlated to the number of clover buds and flowers in the field. In feeding and olfactory bioassays, females of A. fulvipes and A. trifolii showed a preference for T. repens and T. pratense, respectively. However, the feeding preference was lost when the antennae were removed, indicating a significant role of olfaction in host choice. Male weevils of both species did not show clear olfactory or feeding preferences for host plant species. The field study and laboratory bioassays demonstrate that, at least for female weevils, olfaction is important for selection of host plants. We discuss these novel results in the context of managing these important pests of clover by exploiting olfaction and behavioral attraction to host plant volatiles.
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Affiliation(s)
- Franklin N Nyabuga
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden. Corresponding author,
| | - David Carrasco
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Lynn Ranåker
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Martin N Andersson
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Göran Birgersson
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, SE-230 53 Alnarp, Sweden
| | - Mattias C Larsson
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, SE-230 53 Alnarp, Sweden
| | - Ola Lundin
- Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, SE-750 07 Uppsala, Sweden
| | - Maj Rundlöf
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Glenn P Svensson
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Olle Anderbrant
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Åsa Lankinen
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, SE-230 53 Alnarp, Sweden
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49
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Proffit M, Khallaf MA, Carrasco D, Larsson MC, Anderson P. 'Do you remember the first time?' Host plant preference in a moth is modulated by experiences during larval feeding and adult mating. Ecol Lett 2015; 18:365-74. [PMID: 25735877 DOI: 10.1111/ele.12419] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/01/2014] [Accepted: 01/22/2015] [Indexed: 11/27/2022]
Abstract
In insects, like in other animals, experience-based modulation of preference, a form of phenotypic plasticity, is common in heterogeneous environments. However, the role of multiple fitness-relevant experiences on insect preference remains largely unexplored. For the multivoltine polyphagous moth Spodoptera littoralis we investigated effects of larval and adult experiences on subsequent reproductive behaviours. We demonstrate, for the first time in male and female insects, that mating experience on a plant modulates plant preference in subsequent reproductive behaviours, whereas exposure to the plant alone or plant together with sex pheromone does not affect this preference. When including larval feeding experiences, we found that both larval rearing and adult mating experiences modulate host plant preference. These findings represent the first evidence that host plant preferences in polyphagous insects are determined by a combination of innate preferences modulated by sensory feedback triggered by multiple rewarding experiences throughout their lifetime.
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Affiliation(s)
- Magali Proffit
- Chemical Ecology, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden; Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR 5175, CNRS - Université de Montpellier - Université Paul Valéry Montpellier - EPHE, 1919 route de Mende, 34293, Montpellier, cedex 5, France
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50
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Innate and Conditioned Responses to Chemosensory and Visual Cues in Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Liviidae), Vector of Huanglongbing Pathogens. INSECTS 2014; 5:921-41. [PMID: 26462949 PMCID: PMC4592602 DOI: 10.3390/insects5040921] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 11/17/2022]
Abstract
Asian citrus psyllid (Diaphorina citri) transmits Huanglongbing, a devastating disease that threatens citrus trees worldwide. A better understanding of the psyllid’s host-plant selection process may lead to the development of more efficient means of monitoring it and predicting its movements. Since behavioral adaptations, such as associative learning, may facilitate recognition of suitable host-plants, we examined whether adult D. citri could be conditioned to visual and chemosensory stimuli from host and non-host-plant sources. Response was measured as the frequency of salivary sheaths, the residue of psyllid probing activity, in a line of emulsified wax on the surface of a test arena. The psyllids displayed both appetitive and aversive conditioning to two different chemosensory stimuli. They could also be conditioned to recognize a blue-colored probing substrate and their response to neutral visual cues was enhanced by chemosensory stimuli. Conditioned psyllids were sensitive to the proportion of chemosensory components present in binary mixtures. Naïve psyllids displayed strong to moderate innate biases to several of the test compounds. While innate responses are probably the psyllid’s primary behavioral mechanism for selecting host-plants, conditioning may enhance its ability to select host-plants during seasonal transitions and dispersal.
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