Does fluctuating asymmetry of antlers in white-tailed deer (Odocoileus virginianus) fellow patterns predicted for sexually selected traits?
Does fluctuating asymmetry of antlers in white-tailed deer (Odocoileus virginianus) fellow patterns predicted for sexually selected traits?
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DOI：
10.1098/rspb.2001.1588
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发表时间：
2001-05-07
影响因子：
4.7
通讯作者：
Leslie, DM
中科院分区：
文献类型：
--
作者：
Ditchkoff, SS;Lochmiller, RL;Leslie, DM
第二性征被假设为男性品质的信号，应该表现出特征的大小和波动的不对称程度之间的负相关，因为生产成本很高。我们收集了俄克拉荷马州439只白尾鹿（Odocoileus virginianus）的形态测量和鹿角数据？美国，以确定是否措施的鹿角不对称性遵循的模式预测性选择的字符。相对波动的不对称性呈负相关的鹿角大小的所有鹿和年龄组内长达五年半的年龄。我们没有发现不对称和鹿角大小之间的关联，在鹿是六岁半或以上。当按鹿角大小对鹿进行分类时，我们发现鹿角小的鹿（小于或等于第33百分位数）比鹿角大的鹿（小于或等于第67百分位数）具有更高的相对不对称性。鹿角的相对不对称性与年龄呈负相关，在一岁半的鹿中最大。相对不对称性与胴体重、内展、头长和体长呈负相关。这些数据表明，不对称的白尾鹿的鹿角，他可能是一个可靠的信号的质量，因此，可能是重要的，在繁殖季节保持诚实的性内广告。
Secondary sexual characters have been hypothesized to signal male quality and should demonstrate a negative relationship between the size of the trait and degree of fluctuating asymmetry because the); are costly to produce. We collected morphometric and antler data from 439 white-tailed deer (Odocoileus virginianus) in Oklahoma? USA, in order to determine whether measures of antler asymmetry follow the patterns predicted for sexually selected characters. Relative fluctuating asymmetry was negatively related to antler size for all deer and within age groups up to five and a half years of age. We did not detect an association between asymmetry and antler size among deer that were six and a half years or older. When categorizing deer by antler size, we found that deer with small antlers (less than or equal to 33rd percentile) had greater levels of relative asymmetry than deer with large antlers (less than or equal to 67th percentile). The relative asymmetry of antlers was negatively related to age and was greatest in deer, that were one and a half years old. Relative asymmetry was also negatively related to carcass mass, inside spread, skull length and body length. These data suggest that asymmetry in the antlers of white-tailed deer may he a reliable signal of quality and, as such, may be important in maintaining honesty in intrasexual advertisements during the breeding season.