search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 33, No. 3, 2012, pp. 271-275
Bioline Code: zr12041
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 33, No. 3, 2012, pp. 271-275

 en Allometry of scales in Chinese pangolins ( Manis pentadactyla check for this species in other resources ) and Malayan pangolins ( Manis javanica check for this species in other resources ) and application in judicial expertise
ZHOU, Zhao-Min; ZHAO, Hong; ZHANG, Zhong-Xu; WANG, Ze-Hui & WANG, Han

Abstract

Pangolins are unique mammals in that they possess scales that serve a protective biological function. As an important raw material of traditional medicine, illegal trades of these scales are frequent and difficult to investigate or prosecute. We used allometric models of dry weight of scales to compare 35 Chinese pangolins ( Manis pentadactyla check for this species in other resources ) and 119 Malayan pangolins ( Manis javanica check for this species in other resources ). Our results showed that the dry weight of scales increases significantly faster with the length of head and body in Malayan pangolins (P=0.005), while dry weight of scales is positive (slope=3.725) in Malayan pangolins but isometric (slope=3.105) in Chinese pangolins. The differences in morphology between these species may reflect an evolutionary adaptation to different environments; Malayan pangolins in tropical regions appear to suffer from greater predation pressure than Chinese pangolins in temperate regions. We advise the conversion standards between dry weight of scales and number of individuals as 573.47 g in Chinese pangolins and 360.51 g in Malayan pangolins respectively, and when two are mixed together, average above two parameters of the median at 466.99 g. We propose these measurements be used as judicial evidences in forensic identification of related cases.

Keywords
Pangolin; Scale; Functional morphology; Allometry; Judicial evidence

 
© Copyright 2012 - Kunming Institute of Zoology, the Chinese Academy of Sciences
Alternative site location: http://www.zoores.ac.cn/

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil