Variación morfométrica en el murciélago Sturnira Magna (Chiroptera: Phyllostomidae)
We assessed sexual and geographic variation in the neotropical bat Sturnira maqna (Phyllostomidae) from univariate and multivariate statistical analyses of cranial, mandibular, and body measurements of specimens representative of the geographic range of the species. Sexual dimorphism is significant, and males are larger than females. Cramial, condiloincisive, and mandibular lengths, width across lower canines, length of third and fourth metacarpals, and length of the first phalanx of the third and fifth digits were the main determinants in discriminant analysis to separate the sexes. Analysis of geographic variation in size revealed no distinct geographic pattern. Size was not correlated with mean annual temperature, mean annual precipitation, or potential evapotranspiration, nor with elevation or relative latitude. Cranial, condiloincisive, palatal, mandibular, and upper-toothrow lengths in males and cranial length, mastoid width, and length of the upper toothrow in females were the main determinants in principal component analysis. A notable phentic homogenity in size was found in specimens from the Amazon Basin and from the Amazonian slope of the Andean Cordillera in Perú. Univariate analyses however revealed that in certain measurements S. magna are somewhat smaller in Andean Perú than elsewhere.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales
1986
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| Online Access: | https://revistas.unal.edu.co/index.php/cal/article/view/35445 |
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