FEMALE CHOICE IN A FERAL GUPPY POPULATION - ARE THERE MULTIPLE CUES
FEMALE CHOICE IN A FERAL GUPPY POPULATION - ARE THERE MULTIPLE CUES
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DOI：
10.1006/anbe.1995.0246
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发表时间：
1995-08-01
期刊：
影响因子：
2.5
通讯作者：
CAITHNESS, N
中科院分区：
文献类型：
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作者：
BROOKS, R;CAITHNESS, N
对南非德班野生孔雀鱼群体的交配行为进行了研究。男性身上有类胡萝卜素(橙色)和黑色素(黑色)斑点，彩虹色和黄色色素含量较低。研究了颜色面积、体型、背鳍和性腺(生殖器)的长度作为雌性择偶线索。在所有测试中，吸引力与橙色程度呈正相关，在某些测试中，吸引力与生殖器的长度呈正相关。对色斑的不对称性进行了研究，得出结论：橙色和黑斑都不是条件依赖型装饰品，或者在这些孔雀鱼中不存在条件依赖型装饰品的表达与波动的不对称性之间预期的负相关。讨论了关于维持多个第二性征的几个假设。(C)1995年动物行为研究协会
Mating behaviour in a feral guppy, Poecilia reticulata, population from Durban, South Africa was examined. Males bear carotenoid (orange) and melanin (black) spots and low levels of iridescent and yellow pigment. Areas of colour, body size and lengths of the dorsal fin and intromittent organ (gonopodium) were studied as female mate-choice cues. Attractiveness was positively related to the degree of orange coloration in all tests, and with the length of the gonopodium in some tests. Asymmetry of colour spots was investigated and it was concluded that either orange and black spots are not condition-dependent ornaments or the expected negative relationship between expression of condition-dependent ornaments and fluctuating asymmetry does not occur in these guppies. Several hypotheses regarding the maintenance of multiple secondary sexual characters are discussed. (C) 1995 The Association for the Study of Animal Behaviour