Novelty makes the heart grow fonder

JEFFREY S. MCKINNON; MARIA R. SERVEDIO

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Novelty makes the heart grow fonder

机译：新奇使人变得更爱

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The little fish commonly known as guppies are almost as popular among evolutionary biologists as they are among home aquarists, because they provide a tantalizing opportunity to explore how genetic variation is maintained in natural populations. The males of this species (Poecilia reticulata) present a dazzling display of colour variation, and it is known that female guppies show strong mating preferences on the basis of male colour patterns. But the maintenance of this colour variation presents an evolutionary mystery, because sexual selection for a specific form of a trait should erode variation in that trait1. The discovery that, in a natural setting, male guppies with rare colour patterns survive better than more common types, presumably because they are less often targeted by predators, was an important advance in explaining guppy colour diversity.

机译：在进化生物学家中，俗称孔雀鱼的小鱼几乎和在家庭水族箱中一样受欢迎，因为它们提供了诱人的机会来探索如何在自然种群中维持遗传变异。该物种的雄性（Poecilia reticulata）呈现出令人眼花color乱的颜色变化，并且已知雌性孔雀鱼根据雄性颜色模式表现出强烈的交配偏好。但是这种颜色变化的维持呈现出一个进化的奥秘，因为对特定形式特征的性选择应该侵蚀该特征的变异1。发现，在自然环境中，具有稀有颜色模式的孔雀鱼比其他普通类型的孔雀鱼存活得更好，这大概是因为它们是掠食者攻击较少的原因，这是解释孔雀鱼颜色多样性的重要进展。

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来源
《Nature》 |2013年第7474期|44-45|共2页
作者
JEFFREY S. MCKINNON; MARIA R. SERVEDIO;
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作者单位

Department of Biology and Center for Biodiversity, East Carolina University, Greenville, North Carolina 27858, USA;

Department of Biology, University of North Carolina Chapel Hill, Chapel Hill, North Carolina 27599, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
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Novelty makes the heart grow fonder

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