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Ultrastructure and lipid chemistry of specialized epidermal structure of Indian porcupines and hedgehog
Author(s) -
PoddarSarkar Mousumi,
Raha Paramaa,
Bhar Radhaballabh,
Chakraborty Asish,
Brahmachary Ratan Lal
Publication year - 2011
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.2010.00452.x
Subject(s) - biology , fatty acid , porcupine , sterol , biochemistry , cholesterol , ecology
Poddar‐Sarkar, M., Raha, P., Bhar, R., Chakraborty, A. and Brahmachary, R.L. 2011. Ultrastructure and lipid chemistry of specialized epidermal structure of Indian porcupines and hedgehog. — Acta Zoologica (Stockholm) 92 : 134–140. In the present study, we investigated the ultrastructural variations of specialized epidermal structure of Indian porcupines ( Hystrix indica and Atherurus macrourus ) and hedgehog ( Hemiechinus collaris ) as well as the variation in the fatty acid composition of total lipid fraction. Scanning electron microscope images reveal the usual scaly structure in surface view and network of channels in cross‐section but with different orientation of partition walls. The lipid profile reveals the presence of free sterol, long‐chain alcohol, free fatty acids, wax ester and sterol ester in all the three cases and trace amount of triglyceride, diglyceride and monoglyceride. Gas chromatography–mass spectrometry analysis of fatty acid methyl ester of total lipid fraction indicates the presence of C 8 ‐C 22 fatty acids in Hystrix indica , C 8 ‐C 18 in Atherurus macrourus and C 8 ‐C 20 fatty acids in Hemiechinus collaris. It is interesting to note that the total lipid fraction of hedgehog shows no branched‐chain, unsaturated and odd‐carbon fatty acids. Odd‐carbon fatty acid and branched‐chain fatty acids detected in the adult H. indica but were absent in juvenile H. indica as well as in A. macrourus . With the exception of C 18:1 , the other unsaturated fatty acids were also absent in both juvenile H. indica and A. macrourus.