Blomqvist Donald, Johansson O C, Götmark Frank
Department of Zoology, Section of Animal Ecology, University of Göteborg, Medicinaregatan 18, S-413 90 Göteborg, Sweden e-mail:
Oecologia. 1997 Mar;110(1):18-24. doi: 10.1007/s004420050128.
Effects of egg size and parental quality on lapwing Vanellus vanellus chick survival were studied in southwestern Sweden over 6 years. Chicks from large eggs were heavier at hatching and survived significantly better than those from small eggs. To control for the confounding effect of parental quality on egg size and chick survival, we performed a cross-fostering experiment during 2 years, exchanging clutches between nests with large and small eggs. In control clutches, chicks from large eggs survived better than those from small eggs, but we found no significant difference in chick survival between exchanged clutches. Thus, egg size did not affect chick survival independently of parental quality. Fledging success increased with parental age and/or experience, and with female body mass. Hence, both egg size and parental quality affect chick survival in the lapwing.
在瑞典西南部，我们对6年间凤头麦鸡（Vanellus vanellus）蛋的大小和亲代质量对雏鸟存活的影响进行了研究。大蛋孵出的雏鸟在孵化时体重更重，且其存活率显著高于小蛋孵出的雏鸟。为了控制亲代质量对蛋大小和雏鸟存活的混杂影响，我们在两年间进行了一项交叉寄养实验，在产大蛋和小蛋的巢穴间交换巢中的蛋。在对照巢中，大蛋孵出的雏鸟比小蛋孵出的雏鸟存活率更高，但我们发现交换巢中雏鸟的存活率没有显著差异。因此，蛋的大小并非独立于亲代质量之外影响雏鸟的存活。雏鸟的出飞成功率随着亲鸟年龄和/或经验以及雌鸟体重的增加而提高。因此，蛋的大小和亲代质量都会影响凤头麦鸡雏鸟的存活。
