Abstract
We have studied the distribution of plant fibers of different sizes in the digestive tracts of two hare species: the brown hare (Lepus euopaeus) and the mountain hare (L. timidus). In all studied hares (18 specimens), the highest amount of fine-sized fibers (less than 0.25 mm length) was observed in the cecum (50–70% of the total fiber mass). It was found out that the fine-sized content in the digestive tract, and especially in the cecum, is provided not only by the separation mechanism of the colon, but also by coprophagy. It was shown that repeated passage of food through the digestive tract compensates small volume of the cecum and increases the period of digestion of the same portions of food.
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References
Bjornhag, G., Separation and delay of contents in the rabbit colon, Swed. J. Agric. Res., 1972, vol. 2, pp. 125–136.
Bjornhag, G., The retrograde transport of fluid in the large intestine of herbivores, Swed. J. Agric. Res., 1981, vol. 11, pp. 61–69.
Clauss, M., Steuer, P., Müller, D.W.H., Codron, D., and Hummel, J., Herbivory and body size: allometries of diet quality and gastrointestinal physiology, and implications for herbivore ecology and dinosaur gigantism, PLoS One, 2013, vol. 8, no. 10, p. e68714.
Ehrlein, H.-J., Reich, H., and Schwinger, M., Colonic motility and transit of digesta during hard and soft faeces formation in rabbits, J. Physiol., 1983, vol. 338, pp. 75–86.
Gruzdev, V.V., Ekologiya zaitsa-rusaka (Ecology of the Brown Hare), Moscow: Izd. MGU, 1974.
Hirakawa, H. and Okada, A., Hard faeces reingestion and the passage and recycling of large particles in the diet of the Japanese hare Lepus brahyurus, Mammalia, 1995, vol. 59, pp. 237–347.
Hirakawa, H., Coprophagy in leporids and other mammalian herbivores, Mamm. Rev., 2001, vol. 31, no. 1, pp. 61–80.
Kolosov, A.M., Lavrov, N.P., and Naumov, S.P., Biologiya promyslovykh okhotnich’ikh zverei SSSR (Biology of Commercially Hunted Animals of the USSR), Moscow: Vyssh. Shk., 1964.
Naumova, E.I., Funktsional’naya morfologiya pishchevaritel’noi sistemy gryzunov i zaitseobraznykh (Functional Morphology of the Digestive System of Rodents and Lagomorphs), Moscow: Nauka, 1981.
Naumova, E.I., Zharova, G.K., and Kholodova, M.V., The strategy of using fibrous foods by rodents, Dokl. Ross. Akad. Nauk, 1994, vol. 336, no. 3, pp. 425–427.
Naumova, E.I., Kuznetsova, T.A., Zharova, G.K., Chistova, T.Yu., and Varshavskii, A.A., Phytophagous mammals as donors of cellulolytic microorganisms for culturing for resource purposes, in Fundamental’nye osnovy upravleniya biologicheskimi resursami (Fundamentals of Management of Biological Resources), Moscow: KMK, 2005, pp. 471–486.
Naumova, E.I., Zharova, G.K., Kuznetsova, T.A., Chistova, T.Yu., and Danilkin, A.A., Morphological provision for the specialization of hares to coprophagy: the architectonics of the mucous surface of the intestine, Biol. Bull. (Moscow), 2013, vol. 40, no. 6, pp. 539–544.
Naumova, E.I., Zharova, G.K., Chistova, T.Yu., and Formozov, N.A., The structure of the epithelial surface of the gastrointestinal tract of pikas (Ochotona pallasi and O. dauurica, Lagomorpha, Ochotonidae): functional and species specificity, Biol. Bull. (Moscow), 2014, vol. 41, no. 4, pp. 357–363.
Naumova, E.I., Zharova, G.K., Chistova, T.Yu., Varshavskii, A.A., and Formozov, N.A., Reduction of plant fibers in the digestive tract of two pika species (Ochotona pallasi and O. dauurica, Lagomorpha, Ochotonidae), Biol. Bull. (Moscow), 2015, vol. 42, no. 2, pp. 124–128.
Pshennikov, A.E., Alekseev, V.G., Koryakin, I.I., and Gnutov, D.Yu., Coprophagia and its rhythm in hare (Lepus timidus) in the Central Yakutia, Zool. Zh., 1988, vol. 67, no. 9, pp. 1357–1362.
Rees Davies, R. and Rees Davies, J.A.E., Rabbit gastrointestinal physiology, Vet. Clin. Exot. Anim., 2003, no. 6, pp. 139–153.
Sokolov, V.E., Ivanitskaya, E.Yu., Gruzdev, V.V., and Geptner, V.G., Mlekopitayushchie Rossii i sopredel’nykh regionov. Zaitseobraznye (Mammals of Russia and Adjacent Areas: Lagomorphs), Moscow: Nauka, 1994.
Varshavskii, A.A., Naumova, E.I., and Manaeva, E.S., 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., 2014, vol. 455, no. 6, pp. 139–142.
Zharova, G.K., Naumova, E.I., and Nesterova, N.G., Reduction of dietary fiber in the digestive tract of the bank vole Clethrionomys glareolus, Dokl. Ross. Akad. Nauk, 1997, vol. 356, no. 2, pp. 275–277.
Zharova, G.K., Naumova, E.I., and Chistova, T.Yu., Degradation of cellulose fibers in the digestive tract of Microtus voles, Dokl. Biol. Sci., 2005, vol. 402, pp. 130–132.
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Original Russian Text © E.I. Naumova, G.K. Zharova, T.Yu. Chistova, T.A. Kuznetsova, 2015, published in Izvestiya Akademii Nauk, Seriya Biologicheskaya, 2015, No. 5, pp. 503–508.
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Naumova, E.I., Zharova, G.K., Chistova, T.Y. et al. The effect of coprophagy on the size of plant fibers in the digestive tract of hares Lepus europaeus and L. timidus (Lagomorpha, Leporidae). Biol Bull Russ Acad Sci 42, 426–431 (2015). https://doi.org/10.1134/S106235901505009X
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DOI: https://doi.org/10.1134/S106235901505009X