Intrasexual competition, territoriality and acoustic communication in male strawberry poison frogs (Oophaga pumilio)

Intrasexual competition, territoriality and acoustic communication in male strawberry poison frogs (Oophaga pumilio)
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雄性草莓毒蛙 (Oophaga pumilio) 的性内竞争、领地性和声音交流

DOI:
10.1007/s00265-011-1309-9
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发表时间:
--
影响因子:
2.3
通讯作者:
Pröhl H
Pröhl H
中科院分区:
生物学2区
文献类型:
--
作者:
Meuche I;Linsenmair KE;Pröhl H

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在许多物种中,雄性的繁殖成功受到雌性的限制。地盘意识是一种有助于获得女性的行为策略。在本研究中,我们调查了领域的大小和(1)女性可用性和(2)入侵率同种雄性草莓毒蛙,Oophaga pumilio之间的相关性。男性捍卫较小的领土,在该地区的女性密度高,入侵率高的同种男性。只有男性与高身体条件值能够建立领域的高密度的女性可能是由于更好的战斗能力。此外,显性调用频率较低,在激动剂的相互作用。因为只有身体状况值高的男性才能产生非常低的主频,所以声学特性似乎是包含战斗能力信息的诚实信号。因此,在以前的研究中发现的显性频率和交配成功的男性之间的负相关性似乎是部分的雄性之间的性内竞争的结果。
In many species male reproductive success is limited by access to females. Territoriality is one behavioural strategy which helps to acquire females. In the present study, we investigated the correlation between territory size and (1) female availability and (2) rate of intrusion by conspecific males in strawberry poison frogs,Oophaga pumilio. Males defended smaller territories in areas with a high female density and high rate of intrusion by conspecific males. Only males with high body condition values were able to establish territories in areas of high female density probably due to better fighting abilities. Moreover, dominant calling frequency was lower during agonistic interactions. Because only males with high body condition values were able to produce very low dominant frequencies, the acoustic properties appear to be an honest signal containing information about fighting abilities. Thus, the negative correlation between dominant frequency and mating success of males found in previous studies seems to be in part the result of intrasexual competition between males.
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