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| Maia,O.B.; Jácomo,A.T.A.; Bringel,B.A.; Kashivakura,C.K.; Oliveira,C.A.; Teodoro,L.O.F.; Silveira,L.; Teixeira da Costa,M.E.L.; Malta,M.C.C.; Furtado,M.M.; Torres,N.M.; Mattos,P.S.R.; Viau,.P; Lima,T.F.G.; Morato,R.G.. |
| Serum hormone levels were compared between captive and free-living maned wolves and seasonal variations of sex hormones were studied. Blood samples were collected from 16 male and 26 female adult animals from Brazilian zoos, and from 30 male and 24 female free-living adults to determine serum progesterone and testosterone by radioimmunoassay. Serum testosterone concentrations varied (P < 0.05) across seasons for 16 captive males, being higher in autumn (2184.7 ± 355.1 pg/mL) than in summer (1080.7 ± 205.4 pg/mL), winter (1270.1 ± 276.6 pg/mL) and spring (963.9 ± 248.1 pg/mL), although they did not differ between summer, winter and spring. Testosterone concentration of 30 free-living males differed (P < 0.05) between autumn (824.1 ± 512.2 pg/mL),... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Maned wolf Chrysocyon brachyurus; Progesterone; Testosterone; Radioimmunoassay; Reproduction. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200015 |
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