Metabolism, oxidative stress and territorial behaviour in a female colour polymorphic cichlid fish
Metabolism, oxidative stress and territorial behaviour in a female colour polymorphic cichlid fish
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DOI：
10.1007/s00265-015-2028-4
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发表时间：
2016-01-01
影响因子：
2.3
通讯作者：
Metcalfe, Neil B.
中科院分区：
文献类型：
--
作者：
Dijkstra, Peter D.;Pierotti, Michele E. R.;Metcalfe, Neil B.
体色的性内选择被认为在体色多态性的进化中起着重要的作用，但其生理基础却受到了有限的关注。在颜色多态丽鲷Neochromis omnicaeruleus，三个完全同域雌性颜色变体-一个平原变体（P）和两个显着的彩色斑点变体，黑色和白色斑点（WB）和橙子斑点（OB）-不同的竞争行为。我们比较了常规的代谢率（当女性被安置在社会隔离），短期能量成本的相互作用与同一颜色的对手住在一个相邻的透明室和氧化应激之间的三个女性的颜色变体。与其他颜色变体相比，WB雌性的常规代谢率较低。WB女性也有一个较低的活性代谢率在女性间的相互作用比OB女性，而OB女性使用更多的氧气每单位的侵略行为比其他两个颜色的变体。然而，三种变体之间的氧化应激没有一致的差异。协调分歧的颜色，行为和代谢可能有助于这些多态性的同域性的演变。
Intrasexual selection on body coloration is thought to play an important role in the evolution of colour polymorphism, but its physiological underpinnings have received limited attention. In the colour polymorphic cichlid Neochromis omnicaeruleus, three fully sympatric female colour morphs-a plain morph (P) and two conspicuously coloured blotched morphs, black-and-white blotched (WB) and orange blotched (OB)-differ in agonistic behaviour. We compared routine metabolic rate (when females were housed in social isolation), short-term energetic costs of interacting with a same-colour rival housed in an adjacent transparent chamber and oxidative stress between the three female colour morphs. WB females had a lower routine metabolic rate compared with the other colour morphs. WB females also had a lower active metabolic rate during inter-female interactions than OB females, while OB females used more oxygen per unit aggressive act than the other two colour morphs. However, there were no consistent differences in oxidative stress between the three morphs. Concerted divergence in colour, behaviour and metabolism might contribute to the evolution of these polymorphisms in sympatry.