An application of optimal diving models to diving behaviour of Brunnich's guillemots
An application of optimal diving models to diving behaviour of Brunnich's guillemots
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DOI：
10.1006/anbe.2002.3093
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发表时间：
2002-11-01
期刊：
影响因子：
2.5
通讯作者：
Watanuki, Y
中科院分区：
文献类型：
--
作者：
Mori, Y;Takahashi, A;Watanuki, Y
虽然理论模型预测随着深度的增加，觅食斑块的质量对最佳潜水时间的影响很小，但许多实证研究表明，在给定深度下，潜水时间可能会发生变化。我们开发了一个模型，将斑块质量作为能量摄入的参数作为时间的非线性函数，并将其应用于布鲁尼奇海鸠的潜水行为，Uria lomvia。模型表明，随着参数的变化，最佳潜水时间会有较大的变化。这也解释了观测到的潜水时间随旅行时间的收敛性。假设鸟类最优潜水，这个参数可以通过每次潜水的旅行时间和潜水时间来估计。估计参数值越大的觅食斑块越受鸟类青睐，表明该参数反映了斑块的质量。我们使用这个参数来测试潜水员的最佳贴片使用模型。结果表明，海鸠会根据斑块质量自适应地调整其潜水行为，如果适当地考虑斑块质量，则最优潜水模型可以有效地预测观察到的潜水模式。(C) 2002动物行为研究协会。Elsevier Science Ltd.出版。版权所有。
Although theoretical models predict that the quality of foraging patches has little effect on optimal dive time with increasing depth, many empirical studies show that dive time at a given depth may vary. We developed a model that incorporated patch quality as a parameter of energy intake as a nonlinear function of time, and applied it to the diving behaviour of Brunnich's guillemots, Uria lomvia. The model indicated that optimal dive time can vary widely depending on the parameter. It also explained the convergence of observed dive times with travel time. Assuming the birds dived optimally, this parameter can be estimated from travel time and dive time for each dive. Foraging patches with larger estimated parameter values were favoured by the birds, suggesting that the parameter indicated patch quality. We used this parameter to test an optimal patch use model in divers. The results indicate that Brunnich's guillemots adjust their diving behaviour adaptively depending on patch quality, and that the optimal diving model is valid for prediction of observed dive patterns if patch quality is incorporated appropriately. (C) 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved.