Document Detail

Food habit of the juvenile of the Japanese newt Cynops pyrrhogaster.
MedLine Citation:
PMID:  12867714     Owner:  NLM     Status:  MEDLINE    
The previous study showed that the red coloration of the ventral skin of the Japanese newt Cynops pyrrhogaster was associated with the number of carotenoid vesicles and the content of carotenoid in the pigment cell of the skin. To elucidate the mechanism for the red coloration of the skin of the newt, we studied the food habit of the juvenile from the Japanese newt Cynops pyrrhogaster. Sixty-two juveniles were collected in Fukue Island in Nagasaki Prefecture from November 2000 to May 2002 and divided into 2 groups according to the snout-vent length (SVL). Over 400 prey animals were obtained from the juveniles by stomach flushing. In the larger group (SVL>30.0mm), Collembola (45.4%) and Acari (12.6%), which are very common species of soil animals, were the prey animals dominant in number. In the group with the smaller SVL (<29.9mm), Collembola (30.4%) and Acari (25.4%) were in number as well. We also studied the food habit of the Japanese clouded salamander, Hynobius nebulosus. In the salamander, Doratodesmidae (56.5%) and Amphipoda (13%) were the prey animals dominant in number. Our results, taken together, suggest that the Japanese juvenile C. pyrrhogaster does not change its food habit as it grows, and that it eats soil animals common in its habitat. Moreover, the food habit of juvenile C. pyrrhogaster differs from that of H. nebulosus, although the juveniles of both species live in the same area.
Kumi Matsui; Koji Mochida; Masahisa Nakamura
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Zoological science     Volume:  20     ISSN:  0289-0003     ISO Abbreviation:  Zool. Sci.     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-07-17     Completed Date:  2003-11-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8702287     Medline TA:  Zoolog Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  855-9     Citation Subset:  IM    
Department of Biology, School of Education, Waseda University, Tokyo, Japan.
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MeSH Terms
Body Constitution
Feeding Behavior / physiology*
Gastrointestinal Contents
Salamandridae / physiology*
Erratum In:
Zoolog Sci. 2003 Oct;20(10):1323

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