The morphology and morphometry of the epididymis in the greater cane rat (Thryonomys swinderianus Temmincks)

• Autorzy: Adebayo A.O. , Olurode S. A.
• Języki publikacji: EN

Abstrakty

EN

The structure and morphometry of the epididymis in the greater cane rat were studied in this work. In assessing the morphology and characterising the morphometric values, a total of 15 adult male greater cane rats, bred and raised in captivity, were used. All the animals had brownish perineal staining, which was taken as index of sexual maturity in male cane rats, and they were maintained on elephant grass stems with water given ad libitum. From this work, the epididymis of the greater cane rat was observed to have a mean weight of 0.0365 ± 0.091 g, forming about 0.016% of the total body weight and an average volume of 0.36 ± 0.08 mL. There was a positive correlation between the epididymal weights, testicular weight, and the body weight in this animal. However, the gross divisions of the epididymis into head, body, and tail were not conspicuous in the cane rat; instead it had two divisions — the cranial and the caudal divisions. In addition, based on the histological and histomorphometric analyses, five zones were observed in the epididymal epithelium of this animal. This preliminary information on the epididymis will serve as a basis for further research on the epididymis of the greater cane rat and will contribute to the knowledge of the its reproductive biology, which will subsequently aid in the captive rearing and domestication of this animal. (Folia Morphol 2010; 69, 4: 246–252)

Słowa kluczowe

EN

morphology; morphometry; epididymis; greater cane rat; rodent; wild animal; domestication; reproductive biology; Thryonomys swinderianus

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2010
• Tom: 69
• Numer: 4
• Opis fizyczny: p.246-252,fig.,ref.

Twórcy

autor

Adebayo A.O.

• Department of Veterinary Anatomy, University of Agriculture, P.M.B 2240, Abeokuta, Nigeria

autor

Olurode S. A.

• Department of Veterinary Public Health and Reproduction, University of Agriculture, Abeokuta, Nigeria

Bibliografia

• 1. Adebayo AO, Oke BO, Akinloye AK (2009) Characterizing the gonadosomatic index and its relationship with age in greater cane rat (Thryonomys swinderianus, Temminck). J Vet Anat, 2: 53–59.
• 2. Adu EK, Otsyina RH, Agyei AD (2005) The efficacy of different dose levels of albendazole for reducing fecal worm egg count in naturally infected captive grasscutter (Thryonomys swinderianus, Temminck). Livestock Res Rural Development, 17: 1–6.
• 3. Adu EK, Yeboah S (2003) On the use of perineal stain as an index of sexual maturity and breeding condition in the male greater cane rat (Thryonomys swinderianus, Temminck). Trop Animal Health Prod, 35: 433–439.
• 4. Ajayi SS, Tewe OO (1980) Food preferences and carcass composition of the Grasscutter (Thryonomys swinderianus) in captivity. Afr J Ecol, 18: 133–140.
• 5. Almeida FFL, Leal MC, França LR (2006) Testis morphometry, duration of spermatogenesis, and spermatogenic efficiency in the wild boar (Sus scrofa scrofa). Biol Reproduction, 75: 792–799.
• 6. Asibey EOA (1974) Wildlife as source of protein in Africa: South of the Sahara. Biol Conserv, 6: 32–39.
• 7. Costa GMJ, Leal MC, Silva JV, Ferriera AS, Guimaraes DA, França LR (2009) Spermatogenic cycle length and sperm production in feral pig species (collared peccary Tayassu tajacu). J Androl, 30: 1–22.
• 8. Flickinger CJ, Howards SS English HF (1978) Ultrastructural differences in efferent ducts and several regions of the epididymis of hamster. Am J Anat, 152: 557–586.
• 9. Hamilton DW (1975) Structure and function of the epithelium lining the ductuli efferentes, ductus epididymidis and ductus deferens in the rat. In: Handbook of physiology. Section 7, Vol. V. American Physiological Society, Washington, DC, pp. 259–301.
• 10. Hamilton DW, Fawcett DW (1970) In vitro synthesis of cholesterol and testosterone from acetate by rat epididymis and vas deferens. Proc Soc Exp Biol Med, 133: 693–695.
• 11. Hinton BT, Turner TT (2003) Third International Conference on the Epididymis. Van Doren Press, Charlottesville.
• 12. Hoffer AP, Greenberg J (1978) The structure of the epididymis, efferent ductules and ductus deferens of the guinea-pig: a light microscope study. Anat Rec, 190:
• 13. Holstein AF (1978) Spermatophagy in the seminiferous tubules and excurrent ducts of the testis in rhesus monkey and in man. Andrologia, 10: 331–352.
• 14. Holtz WH (1972) Structure, function and secretions of reproductive organs in the male rabbit. PhD Thesis, Cornell University, USA, pp. 13–27.
• 15. Joseph A, Yao H, Hinton BT (2009) Development and morphogenesis of the Wolffian/Epididymal duct, more twists and turns. Developmental Biol, 325: 6–14.
• 16. Nicander L (1957) On the regional histology and cytochemistry of the ductus epididymis in rabbits. Acta Morph Neerl-Scand, 1: 99–118.
• 17. Nicander L, Glover TD (1973) Regional histology and fine structure of the epididymal duct in the golden hamster (Mesocricetus auratus). J Anat, 114: 347–364.
• 18. Oke BO (1988) Some aspects of the reproductive bio-logy of the male African giant rat (Cricetomys gambianus, Waterhouse). PhD Thesis, University of Ibadan.
• 19. Onadeko SA (1996) The reproductive ecology of the Grasscutter (Thryonomys swinderianus, Temminck) in captivity. PhD Thesis, University of Ibadan.
• 20. Pochron ST, Wright PC, Schaentzler E, Ippolito M, Rakotonirina G, Ratsimbazafy R, Rakotosoa R (2002) Effect of season and age on the gonadosomatic index of Milne Edwards’ Sifakas (Propithecus diadema edwardsi) in Ranomafana National Park, Madagascar. Intern J Primatol, 23: 355–364.
• 21. Ramos AL, Dym M (1977) Fine structure of the monkey epididymis. Am J Anat, 149: 501–520.
• 22. Reid BL, Cleland KW (1957) The structure and function of the epididymis. The histology of the rat epididymis. Aus J Zool, 5: 223–246.
• 23. Robaire B, Hinton BT, Orgebin-Crist MC (2006) The epididymis, In: Neill JD ed. Physiology of reproduction. 3rd Ed. Elsevier, New York, pp. 1071–1148.
• 24. Sinowartz F, Wrobel KH, Sinowartz S, Kugler P (1979) Ultrastructural evidence for phagocytosis of spermatozoa in the bovine rete testis and testicular straight tubules. J Reprod Fert, 57: 1–4.
• 25. Segatelli TM, França LR, Pinheiro PFF, Alemida CCD, Martinez M, Martinez FE (2004) Spermatogenic cycle length and spermatogenic efficiency in the gerbil (Meriones unguiculatus). J Androl, 25: 1–21.
• 26. Turner TT, Gleavy JL, Harris JM (1990) Fluid movement in the lumen of the rat epididymis: effect of vasectomy and subsequent vasostomy. J Androl, 11: 422–424.