Cichoń M
Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland, Poland.
Department of Animal Ecology, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden, Sweden.
Oecologia. 2000 Nov;125(3):453-457. doi: 10.1007/s004420000461. Epub 2000 Nov 1.
This paper investigates the costs of incubation in terms of reduced reproductive success and investigates whether incubation competes with immune function for resources. I performed a clutch size manipulation experiment in which two eggs were either removed from or added to the nests of collared flycatchers, Ficedula albicollis, for 1 week during incubation and subsequently returned to their original nests before hatching. To induce immune response, the females were challenged with sheep red blood cells. While the duration of incubation, hatching success and fledgling number did not differ between experimental groups, fledgling condition was significantly lower in broods that had been enlarged during incubation. Neither the females' condition nor their ability to respond to a novel antigen differed between treatments. The relationship between antibody production and female condition was significantly positive, but only among females incubating reduced clutches. I conclude that the costs of incubation in the collared flycatcher are not negligible and are manifested only at the chick-rearing phase.
本文从繁殖成功率降低的角度研究了孵化成本，并探讨了孵化是否会与免疫功能争夺资源。我进行了一项窝卵数操纵实验，在孵化期间的1周内，从白领姬鹟（Ficedula albicollis）的巢中取出或添加两枚卵，随后在孵化前将它们放回原巢。为了诱导免疫反应，用绵羊红细胞对雌鸟进行了刺激。虽然实验组之间的孵化持续时间、孵化成功率和雏鸟数量没有差异，但在孵化期间扩大了窝卵数的巢中，雏鸟状况明显较差。不同处理之间，雌鸟的状况及其对新抗原的反应能力均无差异。抗体产生与雌鸟状况之间的关系呈显著正相关，但仅在孵化减少窝卵数的雌鸟中如此。我得出结论，白领姬鹟的孵化成本不可忽视，且仅在雏鸟饲养阶段显现出来。
