Visual preference of males for conspecific mates in mutually ornamented fish: possible support for the species recognition hypothesis
Visual preference of males for conspecific mates in mutually ornamented fish: possible support for the species recognition hypothesis
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雄性对相互装饰的鱼类中的同种配偶的视觉偏好：对物种识别假说的可能支持
DOI：
10.1007/s10164-019-00610-9
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发表时间：
2019
影响因子：
0.9
通讯作者：
Keisuke Atsumi and Osamu Kishida
中科院分区：
文献类型：
--
作者：
KURIHARA Shun;KUROKAWA Hiroko;TAKIMOTO Gaku;Kunio Takatsu and Osamu Kishida;Keisuke Atsumi and Osamu Kishida;Keisuke Atsumi and Osamu Kishida
由于性选择通常作用于雄性，因此对雌性显着性选择的进化研究不足。性别之间的遗传相关性和对雌性的性选择或社会选择已经被提出来解释雌性亲合，但它们不能完全解释自然界中观察到的某些模式，如非领土性的雌性亲合，滥交物种。物种识别假说认为，雌性亲合是适应性的，因为它阻止了适应不良的杂交，这可能解释雌性亲合。我们研究了这两个同域的，非领土，混杂的鱼类，Tribolodon hakonensis（TH）和tribolodon sachalinensis（TS），其中两性显示物种特异性的显着着色在繁殖季节。我们进行了雄性TH对同种和异种雌性的视觉择偶实验，并比较了它们的联想时间。TH花了更多的时间接近同种，表明他们使用视觉线索来识别它们。由于这两个物种的女性呈现给男性没有不同的身体大小，形状或行为，男性的偏好同种可能是基于女性的婚姻颜色。这些结果表明，雌性定向不仅可以通过物种内的性选择或社会选择来进化或维持，还可以通过种间相互作用（例如，杂交）。
Because sexual selection typically acts on males, the evolution of conspicuous ornamentation in females has been insufficiently studied. Genetic correlation between the sexes and sexual or social selection on females have been proposed to explain female ornamentation, but they cannot fully explain certain patterns observed in nature such as female ornamentation in non-territorial, promiscuous species. The species recognition hypothesis, which postulates that ornamentation is adaptive because it prevents maladaptive hybridization, might plausibly explain female ornamentation. We examined this in two sympatric, non-territorial, promiscuous fish species,Tribolodon hakonensis(TH) andTribolodon sachalinensis(TS), in which both sexes display species-specific conspicuous coloration in the breeding season. We conducted experiments on visual mate choice of male TH for conspecific and heterospecific females, and compared their association times. TH spent more time near conspecifics, indicating that they used visual cues to recognize them. Because the females of the two species presented to the males did not differ in body size, shape or behavior, male preference for conspecifics was probably based on female nuptial coloration. These results suggest that female ornamentation may evolve or be maintained not only by sexual or social selection within a species but also by interspecific interactions (e.g., hybridization).