PREY SELECTION AND SEARCH STRATEGY OF SPOTTED FLYCATCHER (MUSCICAPA-STRIATA) - FIELD-STUDY ON OPTIMAL FORAGING
PREY SELECTION AND SEARCH STRATEGY OF SPOTTED FLYCATCHER (MUSCICAPA-STRIATA) - FIELD-STUDY ON OPTIMAL FORAGING
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DOI：
10.1016/0003-3472(77)90053-7
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发表时间：
1977-01-01
期刊：
影响因子：
2.5
通讯作者：
DAVIES, NB
中科院分区：
文献类型：
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作者：
DAVIES, NB
捕蝇者在不同的觅食策略和选择猎物之间切换，以最大限度地增加能量摄入。饮食的变化受首选猎物的绝对丰度影响，而不受替代猎物的绝对丰度影响。成年人可以识别黄蜂（Vespula）和蜜蜂（Bombus），并在吞下它们之前去除它们的刺。描述了成鸟和雏鸟的饮食差异以及影响捕获猎物成功的因素。捕蝇鸟离开栖地的行为和它们选择放弃的时间与它们在给定时间内捕获的猎物数量最大化的观点是一致的。捕蝇鸟通常以能量摄入最大化为目标来寻找和选择猎物。给出了不期望他们总是这样做的理由。
Flycatchers switched between different foraging streategies and selected prey so as to maximize energy intake. Changes in diet were influenced by the absolute abundance of the preferred prey and not by that of alternative prey. Adults could recognize wasps (Vespula) and bees (Bombus) and removed their stings before swallowing them. The differences between adult and nestling diet and factors influencing capture success of prey are described. The flycatchers'' behavior in leaving perches and their choice of a giving-up time was consistent with the view that they were maximizing the number of prey they caught in a given time. Flycatchers often search for and select prey on the basis of maximizing energy intake. Reasons are given for not expecting them always to do so.