Relative Brain Size Is Predicted by the Intensity of Intrasexual Competition in Frogs
Relative Brain Size Is Predicted by the Intensity of Intrasexual Competition in Frogs
复制标题
青蛙的相对大脑大小是通过两性竞争的强度来预测的
DOI:
10.1086/709465
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发表时间:
2020-06
影响因子:
2.9
通讯作者:
er
中科院分区:
文献类型:
--
作者:
Mai Chun Lan;Liao Wen Bo;Luepold Stefan;Kotrschal Alex;er
Competition over mates is a powerful force shaping trait evolution. For instance, better cognitive abilities may be beneficial in male-male competition and thus be selected for by intrasexual selection. Alternatively, investment in physical attributes favoring male performance in competition for mates may lower the resources available for brain development, and more intense male mate competition would coincide with smaller brains. To date, only indirect evidence for such relationships exists, and most studies are heavily biased toward primates and other homoeothermic vertebrates. We tested the association between male brain size (relative to body size) and male-male competition across N=30 species of Chinese anurans. Three indicators of the intensity of male mate competition—operational sex ratio (OSR), spawning-site density, and male forelimb muscle mass—were positively associated with relative brain size, whereas the absolute spawning group size was not. The relationship with the OSR and male forelimb muscle mass was stronger for the male than for the female brains. Taken together, our findings suggest that the increased cognitive abilities of larger brains are beneficial in male-male competition. This study adds taxonomic breadth to the mounting evidence for a prominent role of sexual selection in vertebrate brain evolution.
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影响因子:
3.8
作者:
Roberts SG;Roberts AI
通讯作者:
Roberts AI
影响因子:
3.7
作者:
Amiel JJ;Tingley R;Shine R
通讯作者:
Shine R
DOI:
10.1093/beheco/aru227
发表时间:
2015-03
期刊:
Behavioral ecology : official journal of the International Society for Behavioral Ecology
影响因子:
--
作者:
Kotrschal A;Corral-Lopez A;Amcoff M;Kolm N
通讯作者:
Kolm N
影响因子:
0.8
作者:
K. V. Wood;J. Nichols;H. F. Percival;J. Hines
通讯作者:
K. V. Wood;J. Nichols;H. F. Percival;J. Hines
DOI:
10.1098/rspb.2004.2940
发表时间:
2005-01-22
影响因子:
4.7
作者:
Garamszegi, LZ;Eens, M;Moller, AP
通讯作者:
Moller, AP