Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation
The juvenile hormone (JH) of insects triggers physiological changes related to reproduction in adults of both sexes. Methoprene is a sesquiterpene with some effects that are analogous to those of JH. Treatments with methoprene accelerate sexual maturation in males of the South American fruit fly Ana...
| Autores principales: | , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1472 http://www.sciencedirect.com/science/article/pii/S0022191017300276?via%3Dihub https://doi.org/10.1016/j.jinsphys.2017.06.009 |
| _version_ | 1855034808613208064 |
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| author | Bachmann, Guillermo Enrique Devescovi, Francisco Nussenbaum, Ana Laura Cladera, Jorge Luis Fernandez, Patricia Carina Vera, María Teresa Teal, Peter E.A. Segura, Diego Fernando |
| author_browse | Bachmann, Guillermo Enrique Cladera, Jorge Luis Devescovi, Francisco Fernandez, Patricia Carina Nussenbaum, Ana Laura Segura, Diego Fernando Teal, Peter E.A. Vera, María Teresa |
| author_facet | Bachmann, Guillermo Enrique Devescovi, Francisco Nussenbaum, Ana Laura Cladera, Jorge Luis Fernandez, Patricia Carina Vera, María Teresa Teal, Peter E.A. Segura, Diego Fernando |
| author_sort | Bachmann, Guillermo Enrique |
| collection | INTA Digital |
| description | The juvenile hormone (JH) of insects triggers physiological changes related to reproduction in adults of both sexes. Methoprene is a sesquiterpene with some effects that are analogous to those of JH. Treatments with methoprene accelerate sexual maturation in males of the South American fruit fly Anastrepha fraterculus, giving young males a mating advantage over non-treated males of the same age. Here, we evaluated the effects of methoprene treatment on A. fraterculus males after the sexual maturation phase and tested whether this compound provides a long-term mating advantage. Moreover, we took the first step to unravel the mechanisms that underlie male sexual enhancement. We treated males 1 day or 8 days after adult emergence and compared mate choice between recently matured (young) females and females that had been mature for ca. 10 days (aged females). We also addressed methoprene treatment effects on male sexual signalling. We found that methoprene treatment enhanced male sexual competitiveness even after the sexual maturation phase, and the effect did not decrease until males were older than 20 days. However, when methoprene treatment was carried out close to sexual maturity, the mating enhancement was no longer observed, suggesting a non-immediate effect and excluding the possibility that methoprene acts as a pheromonal compound. Young and aged females tended to mate more frequently with treated-males. This might indicate that in a context of sexual selection, the potential benefits associated with reproductive success would be similar for females of both ages. Treated males released larger amounts of pheromonal compounds than non-treated males, but their courtship behaviour was not altered to the same extent, suggesting that methoprene treatment may accelerate differently the components of male
courtship. We discuss potential benefits of using methoprene to increase the efficiency of the sterile insect technique, which is an environmentally safe method to control this important South American fruit pest. |
| format | info:ar-repo/semantics/artículo |
| id | INTA1472 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA14722019-06-28T14:13:23Z Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation Bachmann, Guillermo Enrique Devescovi, Francisco Nussenbaum, Ana Laura Cladera, Jorge Luis Fernandez, Patricia Carina Vera, María Teresa Teal, Peter E.A. Segura, Diego Fernando Genética Anastrepha Fraterculus Liberación de Insectos Estériles Control Biológico Metopreno Genetics Sterile Insect Release Biological Control Methoprene The juvenile hormone (JH) of insects triggers physiological changes related to reproduction in adults of both sexes. Methoprene is a sesquiterpene with some effects that are analogous to those of JH. Treatments with methoprene accelerate sexual maturation in males of the South American fruit fly Anastrepha fraterculus, giving young males a mating advantage over non-treated males of the same age. Here, we evaluated the effects of methoprene treatment on A. fraterculus males after the sexual maturation phase and tested whether this compound provides a long-term mating advantage. Moreover, we took the first step to unravel the mechanisms that underlie male sexual enhancement. We treated males 1 day or 8 days after adult emergence and compared mate choice between recently matured (young) females and females that had been mature for ca. 10 days (aged females). We also addressed methoprene treatment effects on male sexual signalling. We found that methoprene treatment enhanced male sexual competitiveness even after the sexual maturation phase, and the effect did not decrease until males were older than 20 days. However, when methoprene treatment was carried out close to sexual maturity, the mating enhancement was no longer observed, suggesting a non-immediate effect and excluding the possibility that methoprene acts as a pheromonal compound. Young and aged females tended to mate more frequently with treated-males. This might indicate that in a context of sexual selection, the potential benefits associated with reproductive success would be similar for females of both ages. Treated males released larger amounts of pheromonal compounds than non-treated males, but their courtship behaviour was not altered to the same extent, suggesting that methoprene treatment may accelerate differently the components of male courtship. We discuss potential benefits of using methoprene to increase the efficiency of the sterile insect technique, which is an environmentally safe method to control this important South American fruit pest. Inst. de Genética "Ewald A. Favret"- IGEAF Fil: Bachmann, Guillermo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética "Ewald A. Favret"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Devescovi, Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética "Ewald A. Favret"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Nussenbaum, Ana Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética "Ewald A. Favret"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cladera, Jorge Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética "Ewald A. Favret"; Argentina Fil: Fernandez, Patricia Carina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Vera, María Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina Fil: Teal, P.E.A. Center for Medical, Agricultural and Veterinary Entomology; Estados Unidos Fil: Segura, Diego Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética "Ewald A. Favret" ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2017-10-12T12:59:44Z 2017-10-12T12:59:44Z 2017 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/1472 http://www.sciencedirect.com/science/article/pii/S0022191017300276?via%3Dihub 0022-1910 (Print) 1879-1611 (Online) https://doi.org/10.1016/j.jinsphys.2017.06.009 eng info:eu-repo/semantics/restrictedAccess application/pdf Journal of insect physiology 101 : 7-14. (August 2017) |
| spellingShingle | Genética Anastrepha Fraterculus Liberación de Insectos Estériles Control Biológico Metopreno Genetics Sterile Insect Release Biological Control Methoprene Bachmann, Guillermo Enrique Devescovi, Francisco Nussenbaum, Ana Laura Cladera, Jorge Luis Fernandez, Patricia Carina Vera, María Teresa Teal, Peter E.A. Segura, Diego Fernando Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title | Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title_full | Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title_fullStr | Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title_full_unstemmed | Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title_short | Male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae) : a sustained response that does not fade away after sexual maturation |
| title_sort | male sexual enhancement after methoprene treatment in anastrepha fraterculus diptera tephritidae a sustained response that does not fade away after sexual maturation |
| topic | Genética Anastrepha Fraterculus Liberación de Insectos Estériles Control Biológico Metopreno Genetics Sterile Insect Release Biological Control Methoprene |
| url | http://hdl.handle.net/20.500.12123/1472 http://www.sciencedirect.com/science/article/pii/S0022191017300276?via%3Dihub https://doi.org/10.1016/j.jinsphys.2017.06.009 |
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