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Precocious sexual signalling and mating in Anastrepha fraterculus (Diptera: Tephritidae) sterile males achieved through juvenile hormone treatment and protein supplements

Abstract
Sexual maturation of Anastrepha fraterculus is a long process. Methoprene (a mimic of juvenile hormone) considerably reduces the time for sexual maturation in males. However, in other Anastrepha species, this effect depends on protein intake at the adult stage. Here, we evaluated the mating competitiveness of sterile laboratory males and females that were treated with methoprene (either the pupal or adult stage) and were kept under different regimes of [ver mas...]
Sexual maturation of Anastrepha fraterculus is a long process. Methoprene (a mimic of juvenile hormone) considerably reduces the time for sexual maturation in males. However, in other Anastrepha species, this effect depends on protein intake at the adult stage. Here, we evaluated the mating competitiveness of sterile laboratory males and females that were treated with methoprene (either the pupal or adult stage) and were kept under different regimes of adult food, which varied in the protein source and the sugar:protein ratio. Experiments were carried out under semi-natural conditions, where laboratory flies competed over copulations with sexually mature wild flies. Sterile, methoprene-treated males that reached sexual maturity earlier (six days old), displayed the same lekking behaviour, attractiveness to females and mating competitiveness as mature wild males. This effect depended on protein intake. Diets containing sugar and hydrolyzed yeast allowed sterile males to compete with wild males (even at a low concentration of protein), while brewer´s yeast failed to do so even at a higher concentration. Sugar only fed males were unable to achieve significant numbers of copulations. Methoprene did not increase the readiness to mate of six-day-old sterile females. Long pre-copulatory periods create an additional cost to the management of fruit fly pests through the sterile insect technique (SIT). Our findings suggest that methoprene treatment will increase SIT effectiveness against A. fraterculus when coupled with a diet fortified with protein. Additionally, methoprene acts as a physiological sexing method, allowing the release of mature males and immature females and hence increasing SIT efficiency. [Cerrar]
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Author
Liendo, Marí­a Clara;   Devescovi, Francisco;   Bachmann, Guillermo Enrique;   Utges, María E.;   Abraham, Solana;   Vera, María Teresa;   Lanzavecchia, Silvia Beatriz;   Bouvet, Juan Pedro;   Gomez Cendra, Paula V.;   Hendrichs, Jorge;   Teal, Peter E. A.;   Cladera, Jorge Luis;   Segura, Diego Fernando;  
Fuente
Bulletin of Entomological Research 103 (1) : 1-13 (Febrero 2013)
Date
2013-02
Editorial
Cambridge University Press
ISSN
0007-4853
URI
http://hdl.handle.net/20.500.12123/8742
https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/abs/precocious-sexual-signalling-and-mating-in-anastrepha-fraterculus-diptera-tephritidae-sterile-males-achieved-through-juvenile-hormone-treatment-and-protein-supplements/D5EA8173FC40939D1E2B93A7E30915A2
DOI
https://doi.org/10.1017/S0007485312000442
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Sexual Maturity; Madurez Sexual; Sexual Behaviour; Comportamiento Sexual; Juvenile Hormones; Hormonas Juveniles; Methoprene; Metopreno; Nutrition; Nutrición; Anastrepha fraterculus; Tephritidae; Sterile Insect Technique; Técnica del Insecto Estéril;
Derechos de acceso
Restringido
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