Article

SEXUAL DIMORPHISM IN THE ARISTAE OF CERATITIS CAPITATA (DIPTERA, TEPHRITIDAE) AND ITS POSSIBLE IMPORTANCE IN COURTSHIP

[ "Escuela de Biología, Universidad de Costa Rica, Ciudad Universitaria, San Pedro, Costa Rica ( )"]
Journal of the New York Entomological Society (Impact Factor: 0.5). 01/2009; DOI:10.1664/0028-7199(2000)108[0339:SDITAO]2.0.CO;2

ABSTRACT Los machos de Ceratitis capitata criados en laboratorio tuvieron aristas más largas en promedio y en proporción al tamaño del cuerpo que las de las hembras. Las aristas de machos y hembras tenían pelos de base fija sin membrana (microtrichiae); las aristas de las hembras eran cubiertas con más pelos distribuidos de forma más homogénea que en los machos. Las aristas de las hembras además tenían más curvas en el extremo distal. Las hembras con aristas cortadas experimentalmente fueron menos montadas, y menos copuladas una vez que eran montadas, que las hembras control. Se concluye que posiblemente los estímulos detectados por sus aristas afectan la disposición de la hembra a copular.

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Ximena Miranda G