EFFECTS OF PREDATOR-SPECIFIC DEFENSE ON COMMUNITY COMPLEXITY
EFFECTS OF PREDATOR-SPECIFIC DEFENSE ON COMMUNITY COMPLEXITY
复制标题
DOI：
10.1007/bf01237846
复制
发表时间：
1994-11-01
影响因子：
1.9
通讯作者：
ABRAMS, PA
中科院分区：
文献类型：
--
作者：
MATSUDA, H;HORI, M;ABRAMS, PA
利用协同进化理论探讨了群落结构的一些性质。我们认为，在一个社会中的所有物种采取觅食行为和antipredator行为，最大限度地提高个人健身的食物网的数学模型。如果猎物的反捕食行为对所有的敌人都有效，那么食物网中的猎物-捕食者链的数量必须小于猎物和捕食者物种数量的总和。然而，如果猎物对一种捕食者的注意力增加，而对另一种捕食者的注意力减少，那么使用一组共同的猎物物种的捕食者物种的数量可能没有限制。捕食者特异性防御允许比非特异性防御复杂得多的群落结构。捕食者特异性防御更频繁地允许捕食者之间的大生态位重叠比非特异性防御。坦噶尼喀湖一些鱼类群落的高度连通性可能是这种现象的一个例子。
Some properties of community structure are explored using co-evolutionary theory. We consider mathematical models of food webs in which all species in a community adopt foraging behaviours and antipredator behaviours that maximize individual fitness. If the antipredator behaviour of a prey is effective against all its enemies, the number of prey-predator links in a food web must be less than the sum of the numbers of prey and predator species. However, if an increase in a prey's attention to one type of predator decreases its attention to another type of predator, there may be no limit on the number of predator species using a common set of prey species. Predator-specific defence allows a much more complex community structure than non-specific defence. Predator-specific defence more frequently allows a large niche overlap between predators than does non-specific defence. The high connectivity of some fish communities in Lake Tanganyika may be an example of this phenomenon.