Predation risk and the opportunity for female mate choice in a coral reef fish
Predation risk and the opportunity for female mate choice in a coral reef fish
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DOI：
10.1007/s101640070009
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发表时间：
2000-01-01
影响因子：
0.9
通讯作者：
Sakai, Y
中科院分区：
文献类型：
--
作者：
Karino, K;Kuwamura, T;Sakai, Y
在日本冲绳珊瑚礁的两个地点，研究了捕食风险对雌性择偶机会的影响。雌性反复与最近的雄性交配，但它们也经常在两个地点更换配偶。配偶变化不仅体现在社会空间变化（配偶消失或男性领地转移）的背景下，也可能是女性实际择偶的结果。一个地点（地点A）的雌鱼比另一个地点（地点B）的雌鱼更频繁地更换配偶，并且从它们的家园范围到雄性领地进行更长时间的产卵旅行。地点A的鱼比地点B面临的捕食者频率更高。然而，地点A的鱼遭受捕食者的攻击较少，因为它们有更多的庇护所，这表明该地点的捕食风险较低。这些结果表明，在较高的被捕食风险下，雌性选择更好的配偶的机会更少，在大多数情况下，它们不得不与距离最近的雄性交配。
The influence of predation risk on the opportunity for female mate choice was investigated in the tailspot wrasse Halichoeres melanurus at two sites on a coral reef in Okinawa, Japan. Females mated repeatedly with the nearest males, but they also changed mates frequently at both sites. Mate changes Were seen not only in the context of spatiosocial changes (mate disappearance or shifts in male territories) but were also probably the result of actual mate choice by females. Females at one site (site A) changed mates more often and conducted longer spawning trips from their home ranges to male territories than at the other site (site B), Fish at site: A Wore faced with a higher frequency of predators than that of site B. However, fish of site A suffered fewer attacks from predators because they had more shelter, suggesting lower predation risk in that site. These results suggest that females under higher predation risk had less opportunity to choose preferable mates and that they had to mate with the same, nearest males in most cases.