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布氏田鼠肥满度分析和小型兽类肥满度指标K与KWL(重长指标)的比较
引用本文:房继明,孙儒泳.布氏田鼠肥满度分析和小型兽类肥满度指标K与KWL(重长指标)的比较[J].动物学报,1995,41(2):141-148.
作者姓名:房继明  孙儒泳
作者单位:北京师范大学生物学系!北京100875
摘    要:通过对两个肥满度指标的理论和生物学意义分析,以及对布氏田鼠肥满度的研究和实际应用的讨论,认为描述动物的肥满度时,重长指标KWL优于指标K。两指标的最大差别是成体的KWL值大于幼体,而成体的K值小于幼体。布氏田鼠肥满度没有性别差异;有异著的年龄差异,成体鼠的肥满度高于幼鼠;有显著的季节变化,鼠种群春季肥满度最高,夏季降低,秋季回升;有显著的年际变化,高数量年的肥满度高于低数量年。

关 键 词:鼠类  田鼠  肥满度  种群动态  布氏田鼠  小型兽类

ANALYSIS OF RELATIVE FATNESS OF BRANDT'S VOLES AND A COMPARISON BETWEEN RELATIVE FATNESS K AND K_(WL)(WEIGHT/LENGTH INDEX)IN SMALL MAMMALS
FANG JI-MING SUN RU-YONG LIU ZHI-LONG.ANALYSIS OF RELATIVE FATNESS OF BRANDT''''S VOLES AND A COMPARISON BETWEEN RELATIVE FATNESS K AND K_(WL)(WEIGHT/LENGTH INDEX)IN SMALL MAMMALS[J].Acta Zoologica Sinica,1995,41(2):141-148.
Authors:FANG JI-MING SUN RU-YONG LIU ZHI-LONG
Abstract:When the body conditions of animals were being described, the relative fatness KWL (Weight/Length index, KWL-W/L) was shown better than the relative fatness K (K= 100W/L3). This conclusion was drawn through the theoretical analysis, the discussion bio- logical meaning and application of the two relative fatness indices, and was also based on the previous studies on the both body weight and body length in different small mammals. The most important difference between relative fatness KWL and K was that the KWL value of adult animal was higher than that of young one, but K value of adult was lower. There was no difference of relative fatness of Brandt's vole in aspect of sex. The obvious seasonal changing was that relative fatness value was shown the highest in spring, the lowest in summer and medium in autumn. The yearly variation of the relative fatness was shown itself a significant difference being positively related to the voles'population dynamics.
Keywords:Relative fatness K  Weight/Length index (KWL)  Population dynamics  Brandt's vole (Microtus brandti)  Small mammals  
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