Testosterone level, nasal gland volume and Leydig cell morphometry in capybaras (Hydrochoerus hydrochaeris)

Arquivo Brasileiro de Medicina Veterinaria e Zootecnia

Volumn 58, Issue 6, 2006, Pages 1086-1091

  Costa, D S ^a   Paula, T A R ^b  

^a FEDERAL UNIVERSITY OF MATO GROSSO DO SUL   (Brazil)

^b FEDERAL UNIVERSITY OF VIÇOSA   (Brazil)

Author keywords

Capybara; Leydig cells; Morphometry; Nasal gland; Testosterone

Indexed keywords

HYDROCHAERIS HYDROCHAERIS;

EID: 33947319966     PISSN: 01020935     EISSN: 16784162     Source Type: Journal    
DOI: 10.1590/S0102-09352006000600017     Document Type: Article

References (25)

1. ALHO, C.J.R. Criação e manejo de capivaras em pequenas propriedades rurais. Dep. de Difusão de Tecnologia, Brasília, DF- Embrapa, 1986. 33p.
2. AMANN, R.P.; SCHANBACHER, B.D. Physiology of male reproduction. J. Anim. Sci, v.57, suppl., p.380-403, 1983.
3. COSTA, D.S.; HENRY, M.; PAULA, T.A.R. Espermatogênese de catetos (Tayassu tajacu). Arq. Bras. Med. Vet. Zootec., v.56, p.46-51, 2004.
4. COSTA, D.S.; PAULA, T.A.R.; FONSECA, C.C. et al. Reprodução de capivaras. Arq. Cien. Vet. Zool. Unipar., v.5, p.111-118, 2002.
5. EWING, L.L.; ZIRKIN, B.R.; COCHRAN, R.C. et al. Testosterone secretion by rat, rabbit, guinea pig, dog and hamster testes perfused in vitro: correlation with Leydig cell mass. Endocrinology, v.105, p.1135-1142, 1979.
6. FRIEND, M. The lens technique. Trans. N. Am. Wildl. Conf., v.33, p. 279-298, 1968.
7. HADLEY, M.E. Endocrinology. 2.ed. New Jersey: Prentice Hall, 1988. 549p.
8. HARDY, M.P.; ZIRKIN, B.R.; EWING, L.L. Kinetic studies on the development of the adult population of Leydig cell in testes of the purbertal rat. Endrocrinology, v.124, p.762-770, 1989.
9. HERRERA, E.A. Size of testes and scent glands in capybaras (Hydrochoerus hydrochaeris Rodentia : Caviomorpha). J. Mamm., v.73, p.871-975, 1992.
10. LAPWOOD, K.R.; FLORCRUZ, S.V. Luteinizing hormone and testosterone secretory profiles of boars: Effects of stage of sexual maturation. Theriogenology, v.10, p.293-306, 1978.
11. LAVORENTI, A. Domestication and potential for generic improvement of capybara. Rev. Bras. Gen., v.2, p.137-144, 1989.
12. MOREIRA, J.R. The reproduction, demography and management of capybaras (Hydrochaeris hydrochaeris) on Marajó Island - Brazil. 1995. Thesis (Doctorate) - University of Oxford, England.
13. MOREIRA, J.R.; MACDONALD, D.W.; CLARKE, J.R. Correlates of testis mass in capybaras (Hydrochoerus hydrochaeris): dominance assurance or sperm production? J. Zool, v.241, p.457-463, 1997.
14. MORRIS, P. A review of mammalian age determination methods. Mamm. Rev. v.2, p.69-104, 1972.
15. O'DONNEL, L.; ROBERTSON, K.M.; JONES, M.E. et al Estrogen and spermatogenesis. Endocrinol. Rev., v.22, p.280-318, 2001.
16. PARRA, R.; ESCOBAR, A.; GONZALEZ-JIMÉNEZ. E. El chigüire o capibara (Hydrochoerus hydrochaeris), 1. Ganancia de peso y eficiencia de conversion de alimentos. Mem. ALPA, v.13, p.93, 1978.
17. PAULA, T.A.R. Avaliação histológica e funcional do testículo de capivaras adultas (Hydrochoerus hydrochaeris). 1999. 84f. Tese (Doutorado) - Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte.
18. PAULA, T.A.R.; CHIARINI-GARCIA, H.; FRANÇA, L.R. Seminiferous epithelium cycle and its duration in capybaras (Hydrochoerus hydrochaeris) Tissue Cel., v.31, p.327-334, 1999.
19. RUSSELL, L.D.; ETTLIN, R.A.; SINHA-HIKIM, A.P. et al. Histological and histopathological evaluation of the testis. Clearwater, Fla: Cache River, 1990. 286p.
20. SAMPAIO, I.B.M. Estatística aplicada à experimentação animal. Belo Horizonte: FEPMVZ, 1998. 221p.
21. SANTOS, M.D.; TORRES, C.A.A.; RUAS, J.R.M. et al. Concentraç ão sérica de testosterona em touros zebu. Rev. Bras. Zootec., v.29, p.738-744, 2000.
22. SECTHELL, R.M. Male reproductive organs and semen. In: CUPPS, P.T. (Ed). Reproduction in domestic animals. 4.ed. San Diego: Academic, 1991. p.221-250.
23. SHARMA, I.J.; AGARWAL, S.P.; AGARWAL, V.K. et al. Changes in profiles of serum sex steroids of male buffaloes from birth to maturity. Theriogenology, v.22, p.175-186, 1984.
24. SILVA NETO, P.B. Alimentação e manejo de capivaras (Hydrochoerus hydrochaeris hydrochaeris L. 1766) em cativeiro. 1989. 99p. Dissertação (Mestrado) - Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP.
25. ZIRKIN, B.R.; EWING, L.L.; KROMANN, N. et al. Testosterone secretion by rat, rabbit, guinea pig, dog, and hamster testes perfused in vitro: correlation with Leydig cell ultrastructure. Endocrinology, v.107, p.1867-1874, 1980.