Effects of resource distribution on activity and territory defence in house mice, Mus domesticus
Effects of resource distribution on activity and territory defence in house mice, Mus domesticus
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DOI：
10.1006/anbe.2001.1932
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发表时间：
2002-03-01
期刊：
影响因子：
2.5
通讯作者：
Hurst, JL
中科院分区：
文献类型：
--
作者：
Gray, SJ;Jensen, SP;Hurst, JL
在某种程度上，动物为保卫领土而投入的多少取决于资源的质量、数量和分布，但动物是否会根据不同资源的位置在领土内进行防御投资？我们研究了野生捕获的雄性和雌性家鼠在含有食物/水或巢穴的区域是否会增加对同性或异性入侵者的攻击。在由两个区域组成的围栏中建立成对的常驻小鼠。在分开的围栏中，食物和水在一个区域，巢穴在另一个区域，而在聚集的围栏中，所有资源都在一个区域，而在另一个区域没有资源。在有资源的区域，男女居民都比在没有资源的区域更快地攻击入侵者，并且更具攻击性。在有食物/水的区域、有巢穴的区域或两者之间，攻击行为没有差异。资源对领土防御的影响主要是由于对异性入侵者的侵略发生了变化。居民，尤其是雄性，攻击同性入侵者的次数多于攻击异性入侵者的次数。这种偏见在没有资源的情况下更为强烈，因为在缺乏资源的情况下，对异性入侵者的攻击性较低。入侵者的相对大小（比居民重或轻）对居民的攻击没有影响。由于非资源区域的活动较少，居民在群集的围栏中离开巢穴的时间也较少。2002年动物行为研究协会。
How much an animal invests in defending a territory depends, in part, on the quality, quantity and distribution of resources, but do animals target their investment in defence within the territory according to the location of different resources? We examined whether wild-caught male and female house mice increased aggression towards intruders of the same or opposite sex when in areas containing their food/water or nest site. Pairs of resident mice were established in enclosures consisting of two areas. In split enclosures, food and water were in one area and a nest site in the other, while in clumped enclosures all resources were in one area with no resources in the other. Residents of both sexes were quicker to attack intruders, and were more aggressive, in areas containing resources than in an area containing no resources. There was no difference in aggression between areas containing food/water, a nest site or both. The effect of resources on territorial defence was due largely to changes in aggression against intruders of the opposite sex. Residents, especially males, attacked intruders of their own sex more than those of the opposite sex. This bias was much stronger when no resources were present, owing to low aggression against opposite-sex intruders in the absence of resources. There were no differences in intruder aggression, and the relative size of the intruder (heavier or lighter than the resident) had no effect on resident aggression. Residents also spent less time out of their nest in clumped enclosures owing to low activity in the nonresource area. 2002 The Association for the Study of Animal Behaviour.