Larval predation on different instars in blowfly populations

Brazilian Archives of Biology and Technology

Lucas Del Bianco Faria²  Wesley Augusto Conde Godoy²  Sérgio Furtado Dos Reis¹ 

[1] ,Universidade Estadual Paulista Instituto de Biociências Departamento de ParasitologiaBotucatu SP ,Brazil

关键词: Chrysomya albiceps;    blowflies;    larval predation;    optimal foraging;   

DOI  :  10.1590/S1516-89132004000600008

来源: SciELO

【 摘 要 】

During its larval stage, Chrysomya albiceps (Diptera: Calliphoridae) is a facultative predator on other blowflies. In this study, we evaluated the predation by third instar larvae of C. albiceps on first, second and third instar larvae of Chrysomya megacephala and Cochliomyia macellaria in no-choice experiments in order to compare the vulnerability of larval instars to predation. With first and second instar prey the highest predation rate by C. albiceps was on C. megacephala. For third instar prey, the highest predation rate was on C. macellaria. With second instar prey, there was complete predation on C. megacephala within 90 min, whereas in C. macellaria only 55% of the larvae were eaten by 90 min. For third instar prey most predation on C. macellaria (80%) occurred within 90 min, whereas in C. megacephala only 35% of the larvae were eaten by 90 min. Chrysomya albiceps changes the predatory behavior on its preys depending on which instar and species it will consume.

【 授权许可】

CC BY-NC   
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