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Notice on the ocurrence of supernumerary teeth in the two-toad sloths Choloepus didactylus and C. hoffmanni Mastozool. neotrop.
McAfee,Robert K; Naples,Virginia L.
Supernumerary teeth occur in nearly all modern mammalian orders, although no previous cases have been published for extant pilosans. We report here three specimens of the sloth genus Choloepus, two C. hoffmanni and one C. didactylus, exhibiting supernumerary teeth. All duplicated teeth are maxillary, and all but one on the right side. One C. hoffmanni bears an additional left tooth, suggesting duplication is neither species nor toothrow-side specific. Sloth teeth erupt as simple rounded cones and the different "cusp" patterns characteristic of each extant and extinct genus arise from wear and the differential spacing of upper versus lower dentitions.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Choloepus; Dental anomaly; Megalonychidae; Supernumerary teeth; Xenarthra.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000200016
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An update on the physiology of two- and three-toed sloths BJMBR
Gilmore,D.P.; Da-Costa,C.P.; Duarte,D.P.F..
Physiological and pharmacological research undertaken on sloths during the past 30 years is comprehensively reviewed. This includes the numerous studies carried out upon the respiratory and cardiovascular systems, anesthesia, blood chemistry, neuromuscular responses, the brain and spinal cord, vision, sleeping and waking, water balance and kidney function and reproduction. Similarities and differences between the physiology of sloths and that of other mammals are discussed in detail.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Xenarthra; Sloths; Bradypus; Choloepus; Physiology.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200001
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Sloth biology: an update on their physiological ecology, behavior and role as vectors of arthropods and arboviruses BJMBR
Gilmore,D.P.; Da Costa,C.P.; Duarte,D.P.F..
This is a review of the research undertaken since 1971 on the behavior and physiological ecology of sloths. The animals exhibit numerous fascinating features. Sloth hair is extremely specialized for a wet tropical environment and contains symbiotic algae. Activity shows circadian and seasonal variation. Nutrients derived from the food, particularly in Bradypus, only barely match the requirements for energy expenditure. Sloths are hosts to a fascinating array of commensal and parasitic arthropods and are carriers of various arthropod-borne viruses. Sloths are known reservoirs of the flagellate protozoan which causes leishmaniasis in humans, and may also carry trypanosomes and the protozoan Pneumocystis carinii.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sloths; Ecology; Behavior; Parasites; Bradypus; Choloepus.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100002
Registros recuperados: 3
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