Reproductive biology of Eretmodus cyanostictus, a cichlid fish from Lake Tanganyika
Reproductive biology of Eretmodus cyanostictus, a cichlid fish from Lake Tanganyika
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坦噶尼喀湖慈鲷 Eretmoduscyanostictus 的生殖生物学
DOI：
10.1023/a:1023610905675
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发表时间：
2003
影响因子：
1.4
通讯作者：
S. Balshine
中科院分区：
文献类型：
--
作者：
J. Morley;S. Balshine
对一夫一妻制最广泛接受的解释之一是需要双亲的照顾。然而，一夫一妻制结合双亲照顾的现象在口腔孵化的慈鲷鱼中极为罕见。对表现出这种行为的慈鲷物种进行的研究很少，因此在这些情况下支持一夫一妻制的生态因素仍然不清楚。本文介绍了坦噶尼喀湖一夫一妻制双亲口育鱼（eretmodus cyanostictus, Boulenger 1898）的自然历史和生殖生物学的新信息。研究的种群包括有领地的成对和雄性偏向的非领地的较小的“漂浮物”个体。我们首次详细描述了该物种的产卵，表明繁殖在种群内似乎并不同步，并提供证据表明亲代照顾是昂贵的。我们将讨论这些信息对我们理解一夫一妻制的影响。
One of the most widely accepted explanations for monogamy is the need for biparental care. However, the occurrence of monogamy combined with biparental care is extremely rare in oral incubating (mouthbrooding) cichlid fishes. Few studies have been performed on cichlid species that exhibit this behaviour, and therefore the ecological factors that favour monogamy in these cases remain obscure. Here we present new information on the natural history and reproductive biology ofEretmodus cyanostictus(Boulenger 1898), a monogamous biparental mouthbrooder from Lake Tanganyika. The populations studied consisted of territorial pairs and a male-biased non-territorial population of smaller 'floater' individuals. We present the first detailed description of spawning in this species, show that breeding does not appear to be synchronised within the population, and provide evidence that parental care is costly. We discuss the implications of this information for our understanding of monogamy.