The Relationship Between the Presence of Satellite Males and Nest‐Holders' Mating Success in the Azorean Rock‐Pool Blenny Parablennius sanguinolentus parvicornis
The Relationship Between the Presence of Satellite Males and Nest‐Holders' Mating Success in the Azorean Rock‐Pool Blenny Parablennius sanguinolentus parvicornis
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亚速尔群岛岩池鳊鱼中卫星雄性的存在与筑巢者交配成功之间的关系
DOI：
10.1046/j.1439-0310.2002.00776.x
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发表时间：
2002
期刊：
影响因子：
1.7
通讯作者：
R. Santos
中科院分区：
文献类型：
--
作者：
Rui F. Oliveira;N. Carvalho;Jason A. Miranda;E. Gonçalves;M. Grober;R. Santos
在亚速尔的岩池混居地，性活跃的雄性可能会采取不同的繁殖策略。本文通过比较有伴星雄和无伴星雄的巢，研究了伴星雄的存在与巢主繁殖成功率之间的关系。有伴生雄虫的雄虫遭受了更多的同种入侵，但它们对同种虫的攻击频率并不高。雄巢蚁对其他同种蚁比对卫星蚁更具攻击性，而且对卫星蚁的容忍度与卫星蚁在繁殖领地停留的时间呈负相关，这表明雄巢蚁控制了卫星蚁在共同领地防御上的投资。有卫星雄性的巢主有更高的条件因素，得到更多的雌性访问和更多的产卵。这些结果有两种可能的解释。(1)巢主受益于雄卫星鸟的存在，增加了它们的巢对雌鸟的吸引力；卫星雄蚁是互惠主义者，帮助保卫巢主的领地并吸引雌蚁，这就是它们被容忍的原因。(2)卫星雄倾向于与条件因子较高的成功守巢雄交配，从而有更多的机会实现寄生受精。只有实验才能区分这两种假设。
In the Azorean rock-pool blenny, sexually active males may adopt alternative reproductive tactics. In the present paper the relationship between the presence of satellite males and the reproductive success of nest-holders was investigated by comparing nests with and without an associated satellite male. Males with an associated satellite male suffered more conspecific intrusions but they did not display a higher frequency of attacks towards conspecifics. Nest-holder males were more aggressive towards other conspecifics than towards satellites and the tolerance of nest-holders towards satellites was inversely correlated with the time spent by the satellites in the breeding territory, which suggests control by the nest-holder male of the satellite investment in shared territorial defence. Nest-holders with an associated satellite male had higher condition factors and received more female visits and more spawnings. These results bear two possible interpretations. (1) Nest-holders benefit from the presence of a satellite male by increased attractiveness of their nests to females; satellite males are mutualists helping to defend the nest-owner's territory and to attract females, which is why they are tolerated. (2) Satellite males associate preferentially with more successful nest-holder males which have higher condition factors, and by doing so have more opportunities to achieve parasitic fertilizations. Only experiments will allow these two hypotheses to be distinguished.