Depth-related differences in territory size and defense in the herbivorous cichlid, Neolamprologus moorii, in Lake Tanganyika
Depth-related differences in territory size and defense in the herbivorous cichlid, Neolamprologus moorii, in Lake Tanganyika
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DOI：
10.1007/bf02678579
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发表时间：
1998-02-15
影响因子：
1.2
通讯作者：
Karino, K
中科院分区：
文献类型：
--
作者：
Karino, K
新亮丽鲷（Neolamprologus moorii）是坦噶尼喀湖的一种小型食草慈鲷，它保护自己的领土不受食物竞争者的侵害。在不同深度的mio站点之间比较了领土大小和领土防御。在浅水区，由于鱼类种群密度较高，鱼类入侵的数量多于深水区。虽然浅层站点的领地持有者攻击入侵者的次数与入侵者数量的比例与深层站点的相似，但浅层站点的领地持有者攻击入侵者的次数更多。在较深的网站的领土更大，并包含了更多的藻类比浅的网站。在较深的网站较大的领土规模可能是由于较低的竞争对手密度和需要保持大量的食物资源，以弥补较低的藻类生产力的领土防御成本较低。
Neolamprologus moorii, a small herbivorous cichlid of Lake Tanganyika, defends its territory against food competitors. Territory size and territorial defense were compared between mio sites at different depths. In the shallow site, more fishes intruded into the territories than in the deep site, owing to the higher density fish population in the former. The territory holders in the shallow site attacked intruders more often, although the ratio of attacks to number of intruders was similar to that of the deep site. The territories in the deep site were larger and contained a greater amount of algae than the shallow site. The larger territory size in the deep site may have resulted from the lower cost of territory defense due to the lower competitor density and from the need to maintain a greater amount of food resources to compensate for lower algal productivity.