Alternative mating tactics of the gobiid fish Bathygobiusfuscus
Alternative mating tactics of the gobiid fish Bathygobiusfuscus
复制标题
戈壁鱼Bathygobiusfuscus的替代交配策略
DOI：
10.1007/s10164-002-0047-x
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发表时间：
2002
影响因子：
0.9
通讯作者：
T. Sunobe
中科院分区：
文献类型：
--
作者：
M. Taru;T. Kanda;T. Sunobe
对日本宫崎野冈的深虎鱼（Bathygobius fuscus）的繁殖生态进行了研究。雄鸟在小岩石洞中筑巢，雌鸟在巢壁上产卵。雄性采用两种形式的交配策略：筑巢和潜行。一个巢保持器呆在巢里等待雌性的来访，而一只运动鞋闯入一个巢，而一对正在进行繁殖。男性大于55毫米标准长度总是巢持有人，那些较小的尺寸采用这两种战术。由于较大的男性排除较小的男性，后者没有占据巢洞。随着较大的男性数量的减少，较小的男性改变了他们的交配策略，从潜行到筑巢。结果表明，雄性深虎鱼采取的是一种条件策略，即根据其社会地位的不同而改变策略。
The reproductive ecology of the gobiid fishBathygobius fuscuswas studied at Nobeoka, Miyazaki, Japan. Males of this species maintain small rock holes as a nest and females spawn an egg mass on the wall of the nest. The males employed two forms of mating tactic: nest holding and sneaking. A nest holder stayed in the nest and waited for a female to visit, whereas a sneaker intruded into a nest while a pair was engaged in reproduction. Males larger than 55 mm standard length were always nest holders; those of smaller size employed both tactics. As the larger males excluded the smaller males, the latter did not occupy a nest hole. With a decrease in the number of larger males, smaller males changed their mating tactic from sneaking to nest holding. The results suggest that maleBathygobius fuscusadopt a conditional strategy whereby they change their tactic depending on their social status.