Clutch Manipulation
Mostrando 1-2 de 2 artigos, teses e dissertações.
-
1. Teste de fatores que afetam o tamanho da ninhada de Elaenia chiriquensis (Tyrannidae) do Cerrado do Brasil Central
The study of the selective pressures that determine clutch size is essential to understand lifehistory strategies. Brood manipulation studies are the standard tools for testing the influence of food availability, nest predation risk and increasing parental effort on limitation of clutch size. In order to assess the relative importance of food limitation to t
Publicado em: 2008
-
2. Experimental manipulation of female reproduction reveals an intraspecific egg size-clutch size trade-off.
A negative relationship, or trade-off, between egg size and clutch size is a central and long-standing component of life-history theory, yet there is little empirical evidence for such a trade-off, especially at the intraspecific level. Here, I show that female zebra finches (Taeniopygia guttata) treated chronically during egg formation with the anti-oestrog