Changes in blood glucose and lactate levels of male fiddler crabs: effects of aggression and claw waving
Changes in blood glucose and lactate levels of male fiddler crabs: effects of aggression and claw waving
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DOI：
10.1016/j.anbehav.2004.06.017
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发表时间：
2005-03-01
期刊：
影响因子：
2.5
通讯作者：
Murai, M
中科院分区：
文献类型：
--
作者：
Matsumasa, M;Murai, M
在博弈论的框架中，确定特定行为的成本至关重要。在自然条件下，通过检测血糖和乳酸水平，我们估计了一只招潮蟹雄性攻击和挥舞爪子的能量消耗。雄性招潮蟹有一个扩大的爪子，用于求爱，挥舞和战斗。葡萄糖水平的最大变化出现在活动期的开始，这意味着“男性素质”的变化。血乳酸水平从活动前期到中期显著升高。相关的时间变化的行为表明，乳酸的增加是由于有力的挥手。这一点得到了使用不透明和透明围栏的围栏实验的证实：波动频率不受透明围栏围栏的影响，但在不透明围栏的笼子里，雄性无法看到雌性，也无法向雌性挥手。透明围栏处理的乳酸水平显著高于不透明围栏处理。由于透明围栏防止男性之间的侵略性接触，较高的乳酸浓度在控制男性比男性封闭的透明围栏表明，侵略性的相互作用也是昂贵的。与鸣禽的一些发声表演相反，我们的研究结果表明，招潮蟹的挥舞表演以及竞争行为是能量消耗的。(c)2004年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Determining the costs of a given behaviour is critical in the framework of game theory. We estimated the energy costs of male aggression and claw waving in a fiddler crab Uca lactea perplexa, by examining blood glucose and lactate levels under natural conditions. Male fiddler crabs have a single enlarged claw used in courtship waving and fighting. The greatest variation in glucose level was found at the beginning of the activity period, implying variation in 'male quality'. Blood lactate level increased significantly from the early to the middle part of the crabs' activity period. The associated temporal change in behaviour indicated that the increase in lactate was due to vigorous waving. This was confirmed by an enclosure experiment using opaque and transparent fences: the waving frequency was not affected by enclosures with transparent fences but was strikingly lower in cages with opaque fences in which the males could not see and wave at females. The lactate level was significantly higher in transparent fence treatments than in opaque fence treatments. Since the transparent fence prevented aggressive contact between males, the higher lactate concentration in control males than in males enclosed with the transparent fence indicated that aggressive interactions were also costly. In contrast to some vocal displays in songbirds, our results showed that the waving display of the fiddler crab, as well as agonistic behaviour, is energetically costly. (c) 2004 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.