Summary
The ingestion of feces is widespread among rodent species and is an extensively employed component of the repertoire of feeding behaviors in some species. Coprophagy is thus a significant consideration in the nutrition and dietary ecology of many rodents. As certain fecal pellets pass from the anus, they are taken up directly into the mouth, chewed, and swallowed. The nocturnally active herbivorous kangaroo rat Dipodomys microps ingests about 1/4 of the feces it produces daily and the daily pattern of reingestion shows a consistent rhythm. For about 8 h of the daytime, during the non-foraging, resting phase of the day, D. microps reingests all fecal pellets produced; during the remainder of the day it leaves all feces produced. The reingested feces contain more nitrogen and water, and less inorganic ions than the non-reingested feces. The extent of reingestion varies among rodent species in relation to diet, and coprophagy is more important in the more herbivorous species. The granivorous kangaroo rat D. merriami ingests feces rarely. The herbivorous vole Microtus californicus ingests about 1/4 of its feces, as does D. microps. However, in contrast to D. microps, M. californicus shows a series of rhythmic, short-term (one to several hour duration) alternations between reingestion and non-reingestion during the course of the day and night. This pattern correlates with the pattern of foraging in M. californicus, which extends over both night and day.
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Baker, R.H.: Nutritional strategies of myomorph rodents in North American grasslands. J. Mammal. 52, 800–805 (1971)
Barnes, R.H., Fiala, G., Kwong, E.: Decreased growth rate resulting from prevention of coprophagy. Fed. Proc. 22, 125–128 (1963)
Barry, R.E.: Mucosal surface areas and villous morphology of the small intestine of small mammals: functional interpretations. J. Mammal. 57, 273–290 (1976)
Baverstock, P., Green, B.: Water recycling by lactation. Science 187, 657–658 (1975)
Booth, Y.S.: Shrews (Crocidura cassiteridum) on the Scilly Isles. Zool. Soc. Lond. Proc. 126, 167–170 (1956)
Carleton, M.D.: A survey of gross stomach morphology in new world Cricetinae (rodentia, Muroidea), with comments on functional interpretations. Misc. Publs. Mus. Zool. Univ. Mich., 146, 1–43 (1973)
Charles-Dominique, P., Hladik, C.M.: Le lépilemur du Sud de Madagascar: écologie, alimentation et vie sociale. La Terre et la Vie 25, 3–66 (1971)
Crowcroft, P.: Refection in the common shrew. Nature 170, 627 (1952)
Daan, S.: Adaptive daily strategies in behaviour. In: Handbook of Behavioural Neurobiology Volume 5. Biological Rhythms. (J. Aschoff, ed.) Chapter 3.6.1. Plenum Press, In Press 1980
Daan, S., Slopsema, S.: Short-term rhythms in foraging behaviour of the common vole, Microtus arvalis. J. Comp. Physiol. 127, 215–227 (1978)
Daft, F.S., McDaniel, E.G., Herman, L.G., Romine, M.K., Kegner, J.R.: Role of coprophagy in utilization of B vitamins synthesized by intestinal bacteria. Fed. Proc. 22, 129–133 (1963)
Eden, A.: Coprophagy in the rabbit. Nature 145, 36–37 (1940)
Eden, A.: Coprophagy in the rabbit: origin of ‘night’ faeces. Nature 145, 628–629 (1940)
Clvehjem, C.A.: Nutritional significance of the intestinal flora. Fed. Proc. 7, 410–417 (1948)
Citzgerald, R.J., Gustafsson, B.E., McDaniel, E.G.: Effects of coprophagy prevention on intestinal microflora in rats. J. Nutrition 84, 155–159 (1964)
Frank, I., Hadeler, U., Harder, W.: Zur Ernährungsphysiologie der Nagetiere. Pflügers Archiv. 253, 173–180 (1951)
Fridericia, L.S., Freudenthal, P., Gudjonnsson, S., Johansen, G., Schoubye, N.: Refection, a trasmissible change in the intestinal content, enabling rats to grow and thrive without vitamin B in the food. J. Hygiene 27, 70–102 (1927)
Grützner, P.: Ein Beitrag zum Mechanismus der Magenverdauung. Pflügers Archiv 106, 463–522 (1905)
Haga, R.: Observations on the ecology of the Japanese pika. J. Mammal. 41, 200–212 (1960)
Hamilton, W.J.: Coprophagy in the swamp rabbit. J. Mammal. 36, 303–304 (1955)
Hamilton, W.J.: Reproductive adaptations of the red tree mouse. J. Mammal. 43, 486–504 (1962)
Harder, W.: Zur Morphologie und Physiologie des Blinddarmes der Nagetiere. Verh. deut. Zool. Ges. 1949, 95–109 (1949)
Heisinger, J.F.: Periodicity of reingestion in the cottontail. Amer. Midl. Natur. 67, 441–448 (1962)
Hörnicke, H., Batsch, F.: Coecotrophy in rabbits-A circadian function. J. Mammal. 58, 240–242 (1977)
Howell, A.B., Gersh, I.: Conservation of water by the rodent Dipodomys. J. Mammal 16, 1–9 (1935)
Ingles, L.G.: Reingestion in the mountain beaver. J. Mammal 42, 411–412 (1961)
Jilge, B.: The entrainment of circadian soft faeces excretion in the rabbit. J. interdiscipl. Cycle Res. 7, 229–235 (1976)
Jilge, B.: The entrainment of caecotrophy-rhythm of the rabbit following 6-and 12 h phase-shifts of the Zeitgeber. Chronobiologia 6, 33–38 (1979)
Kalugin, Y.A.: Coprophagy of rodents and lagomorphs and its physiological importance. Zool. Zhur. 53, 1840–1847 (1974)
Kenagy, G.J.: Saltbush leaves: excision of hypersaline tissue by a kangaroo rat. Science 178, 1094–1095 (1972)
Kenagy, G.J.: Adaptations for leaf eating in the Great Basin kangaroo rat, Dipodomys microps. Oecologia (Berl.) 12, 383–412 (1973)
Kenagy, G.J.: The periodicity of daily activity and its seasonal changes in free-ranging and captive kangaroo rats. Oecologia (Berl.) 24, 105–140 (1976)
Kenagy, G.J.: Environmental adaptation and temporal organization of behavior in kangaroo rats. In: Behavioral Expression of Biological Rhythms (W. Loher, ed.), Garland STPM Press, New York In Press 1980
Kirkpatrick, C.M.: Coprophagy in the cottontail. J. Mammal. 37, 300 (1956)
Krzywanek, F.W.: Vergleichende Untersuchungen über die Mechanik der Verdauung II. Mitteilung. Röntgenologische Studien am omnivoren Nager (Ratte). Archiv für Tierheilkunde (Berlin) 55, 523–536 (1927)
Landry, S.O.: The rodentia as omnivores. Quart. Rev. Biol. 45, 351–372 (1970)
Lechleitner, R.R.: Reingestion in the black-tailed jack rabbit. J. Mammal 38, 481–485 (1957)
Lehmann, U.: Short-term and circadian rhythms in the behavior of the vole, Microtus agrestis (L.). Oecologia (Berl.) 23, 185–199 (1976)
Loxton, R.G., Raffaelli, D., Begon, M.: Coprophagy and the diurnal cycle of the common shrew, Sorex araneus. J. Zool. Lond. 177, 449–453 (1975)
McNab, B.K.: Bioenergetics and the determination of home range size. Amer. Natur. 97, 133–140 (1963)
Madsen, H.: Does the rabbit chew the cud? Nature 143, 981–982 (1939)
Mickelsen, O.: Intestinal synthesis of vitamins in the nonruminant. Vitamins and Hormones 14, 1–95 (1956)
Morot, C.: Des pelotes stomacales des léporidés. Mém. Soc. Centr. Méd. Vét. 12, Ser. 1, Paris (1882)
Osborne, T.B., Mendel, L.B.: Feeding experiments with isolated food-substances. Carnegie Inst. of Wash. Publ. No. 156 (1911)
Pearson, O.P.: Habits of Microtus californicus revealed by automatic photographic recorders. Ecol. Monogr. 30, 231–249 (1960)
Rood, J.P.: Ecology and social behavior of the desert cavy (Microcavia australis). Amer. Midl. Nat. 83, 415–454 (1970)
Scheunert, A., Zimmerman, K.: Bakterielle Synthese im Blinddarm und Koprophagie beim Kaninchen. Archiv für Tierernährung 2, 217–222 (1951)
Southern, H.N.: Coprophagy in the wild rabbit. Nature 145, 262 (1940)
Southern, H.N.: Periodicity of refection in the wild rabbit. Nature 149, 553–554 (1942)
Sperber, I.: Physiological mechanisms in herbivores for retention and utilization of nitrogenous compounds. In: Isotope Studies on the Nitrogen Chain, pp. 209–219. Vienna: International Atomic Energy Ageny 1967
Swirski, G.: Über die Resorption und Ausscheidung des Eisens im Darm der Meerschweinchen. Pflügers Archiv 74, 466–510 (1899)
Taylor, E.L.: Pseudo-rumination in the rabbit. Zool. Soc. London Proc. Ser. A110, 159–163 (1940)
Taylor, E.L.: The demonstration of a peculiar kind of coprophagy normally practised by the rabbit. Vet. Record 52, 259–262 (1940)
Thacker, E.J., Brandt, C.S.: Coprophagy in the rabbit. J. Nutr. 55, 375–385 (1955)
Tyndale-Biscoe, H.: Life of Marsupials. Edward Arnold, London (1973)
Vorontsov, N.N.: The ways of food specialization and evolution of the alimentary system in muroidea. Symposium Theriologicum 1960, 360–377 (Prag) (1962)
Watson, J.S., Taylor, R.H.: Reingestion in the hare Lepus europaeus Pal. Science 121, 314 (1955)
Wilks, B.J.: Reingestion in geomyid rodents. J. Mammal. 43, 267 (1962)
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Kenagy, G.J., Hoyt, D.F. Reingestion of feces in rodents and its daily rhythmicity. Oecologia 44, 403–409 (1979). https://doi.org/10.1007/BF00545245
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DOI: https://doi.org/10.1007/BF00545245