Artículos de revistas
Foraging behaviour by an intraguild predator blowfly, Chrysomya albiceps (Diptera : Calliphoridae)
Fecha
2007-09-01Registro en:
Journal of Ethology. Tokyo: Springer Tokyo, v. 25, n. 3, p. 287-294, 2007.
0289-0771
10.1007/s10164-006-0025-9
WOS:000248976100010
Autor
Lab Nacl Computacao Cient
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Optimal foraging theory assumes that predators use different prey types to maximize their rate of energetic gain. Studies focusing on prey preference are important sources of information to understand the foraging dynamics of Chrysomya albiceps. The purpose of this investigation is to determine the influence of larval starvation in C. albiceps on the predation rate of different prey blowfly species and instars under laboratory conditions. Our results suggest that C. albiceps prefers Cochliomyia macellaria larvae to Chrysomya megacephala under non-starvation and starvation conditions. Nevertheless, predators gained more weight consuming C. macellaria. This result suggests that C. albiceps profit more in consuming C. macellaria rather than C. megacephala. The foraging behaviour displayed by C. abiceps on their prey and the consequences for the blowfly community are also discussed.