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Fecundity and Mating Propensity of Toxotrypana curvicauda (Diptera: Tephritidae) on an Alternative Host, Jacaratia mexicana (Caricaceae)

Alfredo Jiménez-Pérez and Patricia Villa-Ayala
The Florida Entomologist
Vol. 92, No. 2 (Jun., 2009), pp. 350-354
Stable URL: http://www.jstor.org/stable/40205378
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Fecundity and Mating Propensity of Toxotrypana curvicauda (Diptera: Tephritidae) on an Alternative Host, Jacaratia mexicana (Caricaceae)
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Abstract

Adult reproductive biology, including fecundity and mating propensity, may be affected by larval host for insects such as the papaya fruit fly, Toxotrypana curvicauda that do not require protein to produce eggs. Although the reproductive biology of papaya fruit flies that were reared on papaya fruit Carica papaya L. is known, little is known of flies that develop on alternate host fruit such as Jacaratia mexicana (Caricaceae). Therefore, uninfested J. mexicana fruit were collected from the field and infested by exposing them to oviposition in the laboratory by papaya fruit flies that were obtained from field-infested papaya. Puparia of females were longer then puparia of males, but there was no difference in either puparial width or weight. Females 6 d old produced 26 eggs/ovary. There was a positive linear relationship between puparial weight and number of chorionated eggs in mature females (6-8 d old), but puparial weight was not correlated with adult longevity. Females produced 2.99 eggs per mg of weight of puparium. Adult females were larger and heavier than adult males. Papaya fruit flies reared on J. mexicana are smaller, lighter, and have fewer eggs than reported for flies reared on C. papaya. /// La biología reproductiva, incluyendo fecundidad y propensión al apareamiento puede ser afectada por el alimento de la larva como en la Mosca de la Fruta de la Papaya (MFP), Toxotrypana curvicauda, que no requiere alimentarse de proteínas para producir huevos. A pesar de que se conoce la biología reproductiva de esta mosca criada en papaya, poco se sabe de ella en hospederos alternantes como Jacaratia mexicana (Caricaceae). Por lo tanto, frutos no infestados de J. mexicana fueron colectados en el campo, y fueron infestados (ovipositados) exponiéndolos en el laboratorio a MFP que se obtuvieron de frutos de papaya. Las pupas que dieron origen a machos fueron mas largas que las dieron origen a hembras, pero tuvieron similar ancho y peso. Hay una relación directa y positiva entre el peso de la pupa y el número de huevecillos corionados presentes en hembras sexualmente maduras (6-8 días de edad), sin embargo, el peso de la pupa no correlaciona con la longevidad del adulto. Hembras de 6 días de edad presentan 24 huevos por ovario, y producen 2.99 huevos por cada mg de peso de la pupa. Las moscas obtenidas de J. mexicana son mas pequeñas, ligeras y producen menos huevos que las obtenidas de C. papaya.

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