Tail length variation in Macaca fascicularis and M-mulatta
Tail length variation in Macaca fascicularis and M-mulatta
复制标题
DOI：
10.1007/bf02381611
复制
发表时间：
1997-07-01
期刊：
影响因子：
1.7
通讯作者：
Fooden, J
中科院分区：
文献类型：
--
作者：
Fooden, J
根据采集者对1,040只标本的测量结果，研究了食蟹猴（Macacafascicularis）和猕猴（Macacafascicularis）相对尾长[RTL =（尾长/头体长）× 100]的变异。mulatta，两个密切相关的物种，分别在热带亚洲和亚热带亚洲相互取代。在束状肌中，RTL通常大于90，而在M中通常小于60。mulatta;仅3.5%的研究样本出现中间值。在每个物种中，RTL在雌性和雄性中大致相等。从婴儿期到成年期，两个物种的RTL都有下降的趋势。In M.在M. fascicularis中，RTL一般随纬度的增加而减小; mulatta，RTL在纬度上近似恒定。这两个物种的地理范围在约。在印度支那半岛北纬15度附近，也采集到少数标本，其背毛颜色介于M，fascicularis和M之间。穆拉塔观察到的变化模式表明，M。fascicularis和M.穆拉塔以前被动物地理屏障隔开--可能是在更新世冰期期间。消失后的假设障碍，这两个物种的范围显然成为连续和有限的杂交发生。
Based on collectors' measurements of 1,040 specimens, variation of relative tail length [RTL = (tail length/head and body length) x 100] has been studied in Macaca fascicularis and M. mulatta, two closely related species that replace one another in tropical Asia and subtropical Asia, respectively. RTL usually is greater than 90 in M, fascicularis and usually is less than 60 in M. mulatta; intermediate values occur in only 3.5% of specimens studied. Within each species, RTL is approximately equal in females and males. From infancy to adulthood, RTL tends to decline in both species. In M. fascicularis, RTL generally decreases with increasing latitude; in M. mulatta, RTL is approximately constant latitudinally. Where the geographic ranges of these two species meet at ca. 15 degrees N in the Indochinese Peninsula, a few specimens have been collected in which RTL and dorsal pelage color are intermediate between those in M, fascicularis and M. mulatta. The observed pattern of variation suggests that the ranges of M. fascicularis and M. mulatta formerly were separated by a zoogeographic barrier-perhaps during a Pleistocene glacial interval. After disappearance of the postulated barrier, the ranges of these two species apparently became contiguous and limited hybridization has occurred.