Remating of wild Ceratitis capitata (Diptera: Tephritidae) females in field cages

MARÍA T. VERA; JORGE L. CLADERA; GRACIELA CALCAGNO; JUAN C. VILARDI; DONALD O. MCINNIS; ERIC STOLAR; DIEGO F. SEGURA; NATALIA PETIT-MARTY; FLAVIA KRSTICEVIC; PAULA GÓMEZ CENDRA; MARCELA RODRIGUERO; KARINA BARBORINI; TAMARA HEER; ARMANDO ALLINGHI; GABRIELA BONPLAND; LAURA HANSEN; GONZALO SEGADE

ANNALS OF THE ENTOMOLOGYCAL SOCIETY OF AMERICA

Año: 2003 vol. 96 p. 563 - 570

0013-8746

The remating behavior of wild Ceratitis capitata (Wiedemann) females was examined after Þrst mating to males from the wild or from one of two genetic sexing strains: Cast 191 (irradiated or nonirradiated males) or Seib 6-96 (irradiated males only). The observations were carried out in Þeld cages set over a rooted host tree during a continuous period of 10 h in which females were individually identiÞed. On average, 12% of females remated. The general trend was a higher rate of remating for females Þrst mated with lab males compared with females Þrst mated with wild males. It was observed that females that remated tended to start and end their Þrst mating earlier than those females that did not remate, and the Þrst mating of the former was shorter than that of the latter. However, there was no signiÞcant differences in copula duration between remater and nonremater females. Females mated initially to wild males showed the longest average refractory period and females mated to Cast 191 irradiated males the shortest. Females Þrst mated to Cast 191 nonirradiated and Seib 6-96 irradiated males showed intermediate values. It is expected that the methodology used in this study can prove useful for routine quality control tests in medßy mass-rearing facilities.Ceratitis capitata (Wiedemann) females was examined after Þrst mating to males from the wild or from one of two genetic sexing strains: Cast 191 (irradiated or nonirradiated males) or Seib 6-96 (irradiated males only). The observations were carried out in Þeld cages set over a rooted host tree during a continuous period of 10 h in which females were individually identiÞed. On average, 12% of females remated. The general trend was a higher rate of remating for females Þrst mated with lab males compared with females Þrst mated with wild males. It was observed that females that remated tended to start and end their Þrst mating earlier than those females that did not remate, and the Þrst mating of the former was shorter than that of the latter. However, there was no signiÞcant differences in copula duration between remater and nonremater females. Females mated initially to wild males showed the longest average refractory period and females mated to Cast 191 irradiated males the shortest. Females Þrst mated to Cast 191 nonirradiated and Seib 6-96 irradiated males showed intermediate values. It is expected that the methodology used in this study can prove useful for routine quality control tests in medßy mass-rearing facilities.