Effects of begging on growth rates of nestling chicks
Effects of begging on growth rates of nestling chicks
复制标题
乞讨对雏鸟生长速度的影响
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Redondo
中科院分区：
文献类型：
--
作者：
M. Rodríguez;Jesús M. Zúñiga;T. Redondo
我们调查了乞讨水平的增加是否会延迟雏鸡的生长。在实验1中，我们人工饲养9对环鸽雏鸽，分为对照组和乞讨组。所有的乳鸽都得到了类似数量的食物，但乞讨组的乳鸽必须长时间乞讨才能得到食物，而对照组的乳鸽在没有乞讨的情况下得到食物。乳鸽在10天后停止对处理的反应，并且在那时，诱导乞讨对其体重没有影响。试验二，人工饲养27对喜鹊雏鸟，饲养3天。实验2的设计与实验1相似。每日食物摄入量和乞讨影响生长率。平均而言，乞讨组中的雏鸡比对照组雏鸡少生长0.8 g/天，这表示生长速率降低8.15%。因为生长通常与预期适应性呈正相关，这表明乞讨是一种代价高昂的行为，这是乞讨行为模型中的一个常规假设。关键词：信号传递成本，障碍原则，喜鹊，异食癖，环鸽，需求信号传递，Streptopelia risoria。[Behav Ecol 12：269-274（2001）]
We investigated whether an increase in begging levels delays growth of chicks. In experiment 1, we hand-reared nine pairs of ring dove squabs, divided into a control and a begging group. All squabs received similar amounts of food, but those in the begging group had to beg for a prolonged period in order to be fed, while squabs in the control group received food without begging. Squabs stopped responding to the treatment after 10 days and, at that time, there was no effect of induced begging on their body mass. In experiment 2, we hand-reared 27 pairs of magpie chicks for 3 days. The design of experiment 2 was similar to that of experiment 1. Daily food intake and begging affected growth rates. On average, chicks in the begging group grew 0.8 g/day less than control chicks, which represents a decrease of 8.15% in growth rate. Because growth is usually positively associated with expected fitness, this demonstrates that begging is a costly behavior, an assumption routinely made in models of begging behavior. Key words: cost of signaling, handicap principle, magpies, Pica pica, ring doves, signaling of need, Streptopelia risoria. [Behav Ecol 12:269–274 (2001)]
操作和巴甫洛夫对环斑鸠啄食个体发育的贡献。
影响因子：
2.2
作者：
Balsam,PD;Graf,JS;Silver,R
通讯作者：
Silver,R