Evolutionary transitions in parental care in cichlid fish
Evolutionary transitions in parental care in cichlid fish
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DOI：
10.1098/rspb.1998.0569
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发表时间：
1998-12-07
影响因子：
4.7
通讯作者：
Reynolds, JD
中科院分区：
文献类型：
--
作者：
Goodwin, NB;Balshine-Earn, S;Reynolds, JD
慈鲷科鱼类非常适合测试脊椎动物父母照顾进化的理论。这些淡水硬骨鱼提供父母照顾他们的后代，显示许多不同形式的照顾，并有种间变异，其中性别杀死年轻人。在这里，我们组装的第一个家庭全复合生殖的基础上形态和分子研究，并跟踪两套字符的演变：形式的照顾（基板守卫和mouthbrooding），和性别的照顾者（双亲，女性只有，男性只有）。口孵育是从祖先的底物保护进化而来的，有10-14次转换和0-3次逆转。数据支持假设的转变，在照顾者的性别，单亲女性护理出现了双亲护理21-30倍，0-10逆转。还有证据表明，只有男性的照顾是从双亲照顾演变而来的。这些过渡的父母照顾字符是最多的任何家庭的脊椎动物的报告，据我们所知，提供了第一个定量支持的模式，在鱼类的父母照顾进化。
Cichlid fishes (Cichlidae) are well suited for testing theories of the evolution of vertebrate parental care. These freshwater teleost fish provide parental care for their offspring, display many different forms of care and have interspecific variation in which sex slays with the young. Here, we assemble the first family-wide composite phylogeny based on morphological and molecular studies, and trace two sets of character evolution: form of care (substrate guarding and mouthbrooding), and sex of care-giver (biparental, female-only, and male-only). Mouthbrooding has evolved from ancestral substrate guarding with 10-14 transitions and 0-3 reversals. The data support hypothesized transitions in the sex of caregiver, with uniparental female care having arisen from biparental care 21-30 times with 0-10 reversals. There is also evidence that male-only care evolved once from biparental care. These transitions in parental care characters are the most numerous reported for any family of vertebrates and, to our knowledge, provide the first quantitative support for models of parental care evolution in fish.