Reduction of plant fibers in the digestive tract of two pika species (Ochotona pallasi and O. dauurica, Lagomorpha, Ochotonidae)

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• 作者：E. I. Naumova (1)
  G. K. Zharova (1)
  T. Yu. Chistova (1)
  A. A. Varshavskii (1)
  N. A. Formozov (2)
  
  1. Severtsov Institute of Ecology and Evolution ; Russian Academy of Sciences ; Leninskii pr. 33 ; Moscow ; 119071 ; Russia
  2. Faculty of Biology ; Moscow State University ; Moscow ; 119992 ; Russia
  
• 刊名：Biology Bulletin
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：42
• 期：2
• 页码：124-128
• 全文大小：431 KB
• 参考文献：1. Chistova, TYu, Butkevich, OO, Naumova, EI (2007) Feeding rate of sibling vole Microtus rossiaemeridionalis and mandarin vole Lasiopodomys mandarinus housed in cages and enclosures. Biol. Bull. 34: pp. 259-266 CrossRef
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  6. Naumova, EI, Zharova, GK, Chistova, TYu, Formozov, NA (2014) The structure of the surface of the epithelium of the digestive tract of pikas (Ochotona pallasi and O. dauurica, Lagomorpha, Ochotonidae): functional and species specificity. Biol. Bull.. pp. 374-381
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  9. Varshavskii, AA (2006) Experience of study of cellobiohydrolase activity of microsymbionts of the digestive tract of small herbivorous mammals. Mater. konf. molodykh sotrudnikov i aspirantov IPEE im. A.N. Severtsova, 5鈥? oktyabrya 2006 g.. KMK, Moscow, pp. 72-77
  10. Varshavskii, AA, Naumova, EI, Manaeva, ES (2014) Diazotrophic and cellulolytic component of the internal food chains in the voles Microtus rossiaemeridionalis and Clethrionomys glareolus depending on the feeding specialization. Dokl. Biol. Sci. 455: pp. 139-142 CrossRef
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  12. Zharova, GK, Naumova, EI, Chistova, TYu (2005) Degradation of cellulose fibers in the digestive tract of Microtus Voles. Dokl. Biol. Sci. 401: pp. 130-132 CrossRef
  
• 刊物主题：Life Sciences, general; Cell Biology; Biochemistry, general; Zoology; Ecology;
• 出版者：Springer US
• ISSN：1608-3059

文摘

The distribution of fibers of different sizes in the gastrointestinal tract in two species of pikas鈥擯allas鈥?pika Ochotona pallasi and daurian pika O. dauurica鈥攚as studied. It was established that fibers of small-sized fractions dominated in all organs of the digestive tract of both pika species, the proportion of which in the stomach proved to be even higher than in fine-grinding voles. No distinct changes in the composition of the size fractions of fibers from organ to organ were observed in the studied individuals of both species, which may be due to frequent consumption of finely dispersed cecotrophs by pikas, which enrich the primary chewed food with small fibers.