Female‐biased dispersal in a bat with a female‐defence mating strategy
Female‐biased dispersal in a bat with a female‐defence mating strategy
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具有雌性防御交配策略的蝙蝠中的雌性偏向扩散
DOI：
10.1111/mec.12202
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发表时间：
2013
影响因子：
4.9
通讯作者：
F. Mayer
中科院分区：
文献类型：
--
作者：
Nagy M;L. Günther ;M. Knörnschild ;F. Mayer
哺乳动物中以雄性为主的扩散(MBD)和鸟类中以雌性为主的扩散(FBD)的最终原因仍然存在很大争议。研究一般扩散模式的例外，例如哺乳动物的FBD，为测试所提出的进化压力的有效性提供了宝贵的机会。我们使用了个别条纹鼻蝠的长期行为和遗传数据，以表明该物种是罕见的患有FBD的哺乳动物例外。我们的结果表明，所有雌性在第一次繁殖之前都会离开它们的出生群体，而相当大比例的雄性是相亲的，并在它们出生的群体中繁殖，尽管也检测到了雄性迁徙。女性第一次受孕的年龄低于男性的任期，这表明女性为了避免父女近亲交配而分散。这一物种中的雄性交配之所以耐人寻味，是因为鼻蝙蝠并不具有雄性交配的常见哺乳动物相关(即资源保护一夫多妻制和/或亲属合作)。它们有一种基于雌性防御的交配策略，在这种策略中，男性亲属之间的本地配偶竞争被认为是激烈的，应该会阻止男性交友的进化。然而，与迁徙的雄性相比，相亲的雄性可能受益于熟悉出生的觅食地，并且可能能够更容易和/或更早地获得优势。我们对喙蝙蝠的研究结果进一步支持了近亲交配避免在形成性别偏见的扩散模式中的重要性，并表明雄性或亲缘合作的资源保护不能完全解释哺乳动物雄性交配的进化。
The ultimate causes for predominant male‐biased dispersal (MBD) in mammals and female‐biased dispersal (FBD) in birds are still subject to much debate. Studying exceptions to general patterns of dispersal, for example, FBD in mammals, provides a valuable opportunity to test the validity of proposed evolutionary pressures. We used long‐term behavioural and genetic data on individually banded Proboscis bats (Rhynchonycteris naso) to show that this species is one of the rare mammalian exceptions with FBD. Our results suggest that all females disperse from their natal colonies prior to first reproduction and that a substantial proportion of males are philopatric and reproduce in their natal colonies, although male immigration has also been detected. The age of females at first conception falls below the tenure of males, suggesting that females disperse to avoid father–daughter inbreeding. Male philopatry in this species is intriguing because Proboscis bats do not share the usual mammalian correlates (i.e. resource‐defence polygyny and/or kin cooperation) of male philopatry. They have a mating strategy based on female defence, where local mate competition between male kin is supposedly severe and should prevent the evolution of male philopatry. However, in contrast to immigrant males, philopatric males may profit from acquaintance with the natal foraging grounds and may be able to attain dominance easier and/or earlier in life. Our results on Proboscis bats lent additional support to the importance of inbreeding avoidance in shaping sex‐biased dispersal patterns and suggest that resource defence by males or kin cooperation cannot fully explain the evolution of male philopatry in mammals.
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影响因子：
64.8
作者：
CLUTTONBROCK, TH
通讯作者：
CLUTTONBROCK, TH
DOI：
10.1098/rstb.2009.0120
发表时间：
2009-11-12
影响因子：
6.3
作者：
Clutton-Brock, Tim
通讯作者：
Clutton-Brock, Tim
新热带蝙蝠 Rhynchonycteris naso 的八种新型微卫星标记的表征和跨物种实用性
影响因子：
1.1
作者：
M. Nagy;Jana Ustinova;F. Mayer
通讯作者：
F. Mayer
金卡朱社会组织的微卫星分析
影响因子：
4.9
作者：
R. Kays;J. L. Gittleman;R. Wayne
通讯作者：
R. Wayne
出生分散、兄弟姐妹之间的互动和性内竞争
影响因子：
2.4
作者：
J. Galliard;Gry Gundersen;H. Andreassen;N. Stenseth
通讯作者：
N. Stenseth