Quantifying the costs and benefits of protective egg coating in a Chrysomelid beetle
Quantifying the costs and benefits of protective egg coating in a Chrysomelid beetle
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DOI：
10.1111/j.1365-2311.2008.00999.x
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发表时间：
2008-08-01
影响因子：
2.2
通讯作者：
Manica, Andrea
中科院分区：
文献类型：
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作者：
Ang, Tzo Zen;O'Luanaigh, Cian;Manica, Andrea
1.通过观察和实验，往往可以很容易地量化对后代进行行为照顾的成本和收益。另一方面，其他形式的父母投资通常不太适合成本效益分析。在这里，成本和效益估计的保护性鸡蛋涂层的一个chrysomelid甲虫，Cryptocephalus hypochaerodium，其中女性花了相当多的时间添加额外的结构组件，每个鸡蛋后，他们。添加这种保护涂层是非常昂贵的，无论是在材料和能源方面的使用：质量的extrachorion相当于一半的质量的鸡蛋，和水的损失和能量消耗，而涂层的鸡蛋是相当于一半的损失，而将进一步产卵。4.对蛋捕食者的选择测试表明，这些高成本被保护免受捕食的好处所抵消：而未涂层的蛋很容易被捕食者吃掉，涂层的蛋总是被拒绝。
1. The costs and benefits of behavioural care of offspring can often be easily quantified through observations and experiments. Other forms of parental investment, on the other hand, are usually less amenable to cost-benefit analysis.2. Here, the costs and benefits are estimated for protective egg coating by a chrysomelid beetle, Cryptocephalus hypochaeridis, where the female spends a considerable amount of time adding extra structural components to each of the eggs after laying them.3. Adding this protective coating was very costly, both in terms of material and energy used: the mass of the extrachorion is equivalent to half the mass of the egg, and water loss and energy expenditure while coating the egg is equivalent to half what would be lost while laying a further egg.4. Choice tests with egg predators demonstrated that these high costs are offset by benefits in terms of protection against predation: whereas uncoated eggs are readily eaten by predators, coated eggs are always rejected.