Pheromonal regulation of reproductive success in female zebrafish: female suppression and male enhancement
Pheromonal regulation of reproductive success in female zebrafish: female suppression and male enhancement
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DOI：
10.1016/j.anbehav.2006.03.009
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发表时间：
2006-11-01
期刊：
影响因子：
2.5
通讯作者：
Gerlach, Gabriele
中科院分区：
文献类型：
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作者：
Gerlach, Gabriele
雌性之间的竞争是性选择研究中一个重要但又被忽视的变量。可能是为了避免伤害自己和后代，雌性之间的竞争通常在没有太多身体互动的情况下进行，因此仍然更难观察。在这里，我们首次在硬骨鱼斑马鱼斑马鱼中证明雌性可以利用水中的信息素来抑制其他雌性的繁殖。在交配前暴露于另一雌性信息素 4 天的雌性斑马鱼产下的活卵明显少于单独饲养或暴露于雄性信息素的雌性斑马鱼。雄性信息素不仅刺激雌性繁殖，还提高卵子的质量和活力。在雌性分组中，繁殖成功与优势等级相关。这些结果表明，鱼类信息素除了充当繁殖计时信号之外，还具有控制配偶和竞争者的功能。在许多鱼类中观察到的雌性繁殖成功率的差异可能可以用这种机制来解释。 (c) 2006 年动物行为研究协会由 Else-vier Ltd 出版。保留所有权利。
Competition among females represents an important but rather neglected variable in studies of sexual selection. Probably to avoid injury to self and offspring, competition among females is often displayed without much physical interaction and therefore remains harder to observe. Here, we show for the first time in a teleost fish, the zebrafish Danio rerio, that females can use waterborne pheromones to suppress reproduction by other females. Female zebrafish that had been exposed to another female's pheromones for 4 days prior to mating spawned significantly fewer viable eggs than females held in isolation or exposed to male pheromones. Male pheromones not only stimulated female reproduction but also increased the quality and viability of eggs. In grouped females, reproductive success correlated with dominance rank. These results indicate that fish pheromones function to control mates and competitors in addition to serving as reproductive timing signals. Differences in female reproductive success observed in many fish species might be explained by this mechanism. (c) 2006 The Association for the Study of Animal Behaviour Published by Else-vier Ltd. All rights reserved.