Mate choice and cannibalism in a natural population of a stream goby,Rhinogobius sp.
Mate choice and cannibalism in a natural population of a stream goby,Rhinogobius sp.
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溪流虾虎鱼 (Rhinogobius sp.) 自然种群中的配偶选择和同类相食行为。
DOI：
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发表时间：
2000
影响因子：
1.2
通讯作者：
Y. Yanagisawa
中科院分区：
文献类型：
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作者：
S. Ito;Y. Yanagisawa
在自然条件下，对河虾虎鱼Rhinogobius sp. LD （Large Dark）的繁殖生态进行了研究。雄性会选择性地向体型相近的雌性求爱以将其引至巢中，而雌性则会在雄性体型相对较大时优先追随求爱的雄性。男性与男性争夺女性的情况相对较少，也不严重。卵的发育阶段和一个窝的卵数表明，雄性在一个繁殖周期内可产卵1-3次。守护多个卵窝的雄性经常吃一些卵，但守护单个卵窝的雄性很少这样做。巢中怀孕的雌性也经常吃上一个雌性产下的蛋，可能是为了扩大产卵的可用区域。讨论了该物种的配偶选择与父系能力、可用产卵面积限制和雌性偏向性比的关系。
Breeding ecology of the stream goby,Rhinogobius sp. LD (Large Dark), was investigated under natural conditions. Males selectively courted females of similar size to lead them to the nests, whereas females followed courting males preferentially when the relative male size was greater. Male-male competition for a female was relatively infrequent and not severe. Developmental stages of eggs and egg numbers in one nest indicated that males receive 1–3 clutches during one breeding cycle. Males guarding multiple clutches frequently ate some of the eggs, but those guarding single clutches rarely did so. Gravid females in the nest also frequently cannibalized eggs laid by a previous female, probably in order to extend the area available for egg deposition. Mate choice in this species is discussed in relation to paternal ability, limitation of available spawning area and the female-biased sex ratio.