SYSTEMATICS OF ORYZOMYS-LONGICAUDATUS (RODENTIA, MURIDAE) IN CHILE

被引：34
|
作者：
GALLARDO, MH
PALMA, RE
机构：
[1] Instituto de Ecología y Evolución, Universidad Austral de Chile, Casilla, Valdivia
来源：
JOURNAL OF MAMMALOGY | 1990年 / 71卷 / 03期
关键词：
D O I：
10.2307/1381943
中图分类号：
Q95 [动物学];
学科分类号：
071002 ;
摘要：
Taxonomists have somewhat arbitrarily sectioned a clinal pattern of geographic variation of rice rats (Oryzomys longicaudatus) into three subspecies along the southwestern Andes. This treatment was reevaluated based on cranial, external, and penial morphometries. Geographic and nongeographic variation was examined through univariate and multivariate statistics. Not three but only two groups are clearly evident. This pattern is interpreted as the result of vicariance caused by Pleistocene geomorphological and climatic changes. The size and kind of gap between the two groupings strongly suggest that two species and no subspecies of rice rats are recognized in Chile.
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页码：333 / 342
页数：10
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