Changes in progesterone and testosterone during the breeding season of the large-footed myotis Myotis moluccarum ( Microchiroptera: Vespertilionidae)

• Autorzy: Lloyd S. , Bradley A. J. , Hall L. S.
• Języki publikacji: EN

Abstrakty

EN

The reproductive biology of the large-footed myotis, Myotis moluccarum, was studied during the annual breeding season in southeast Queensland, Australia. Previous research has shown the species to be polyoestrous and monotoccous, producing two consecutive young with some degree of synchrony in late October to early November and again in late January to early February. Hormonal data was collected and observations of the female reproductive tract made in order to ascertain the reproductive cycle of this species. In July, when females were not pregnant, progesterone concentrations were 1.9 ± 0.9 ng/ml. During the two gestation periods, progesterone concentrations increased progressively until late pregnancy at the end of October through to early November and again in late January to early February. During the latest stages of pregnancy, progesterone concentrations of 69.9 ± 18.7 ng/ml were reached. It is suggested that a plasma progesterone concentration in excess of about 8 ng/ml indicates pregnancy in this species. Plasma testosterone concentration in males reached a peak of 43.1 ± 9.81 ng/ml in July, and was then variable until December when levels declined significantly to 2.0 ± 1.7 ng/ml.

• Wydawca: -
• Czasopismo: Acta Chiropterologica
• Rocznik: 2001
• Tom: 03
• Numer: 1
• Opis fizyczny: p.107-117,fig.,ref.

Twórcy

autor

Lloyd S.

• Department of Veterinary Pathology and Anatomy, University of Queensland, Brisbane, Queensland, Australia 4072

autor

Bradley A. J.

autor

Hall L. S.

Bibliografia

• Baer, G. M., and R. G. Mclean. 1972. A new method of bleeding small and infant bats. Journal of Mammalogy, 53: 231-232.
• Bernard, R. T. R 1986. Seasonal changes in plasma testosterone concentrations and Leydig cell and accessory gland activity in the Cape horseshoe bat (Rhinolophus capensis). Journal of Reproduction and Fertility, 78: 413-422.
• Bernard, R. T. F., C. Bojarski, and R. P. Millar. 1991. Patterns of Leydig cell and LH gonadotroph activity, and plasma testosterone concentrations in the seasonally reproducing Schreibers' long-fingered bat (Miniopterus schreibersii). Journal of Reproduction and Fertility, 91: 479-492.
• Buchanan, G. D., and E. V. Younglai. 1986. Plasma progesterone levels during pregnancy in the little brown bat Myotis lucifugus (Vespertiliondae). Biology of Reproduction, 34: 878-884.
• Burns, J. M., and R. G. Easley. 1977. Hormonal control of delayed development in the California leaf-nosed bat, Macrotus californicus. General and Comparative Endocrinology, 32: 163-166.
• Dwyer, P. D. 1970. Latitude and breeding season in a polyestrous species of Myotis. Journal of Mammalogy, 51: 405-410.
• Gustafson, A. W., and D. A. Damassa. 1985. Annual variations in plasma sex steroid-binding protein and testosterone concentrations in the adult male little brown bat: relation to the asynchronous recrudescence of the testis and accessory reproductive organs. Biology of Reproduction, 33: 1126-1137.
• Gustafson, A. W., and D. A. Damassa. 1985. Repetitive blood sampling from the periperal veins in bats. Journal of Mammalogy, 66: 173-177.
• Gustafson, A. W., and M. Shemesh. 1976. Changes in plasma testosterone levels during the annual reproductive cycle of the hibernating bat, Myotis lucifugus lucifugus with a survey of plasma testosterone levels in adult male vertebrates. Biology of Reproduction, 15: 9-24.
• Hosken, D. J., J. E. O'Shea, and M. A. Blackberry. 1996. Blood plasma concentrations of progesterone, sperm storage and sperm viability and fertility in Gould's wattled bat (Chalinolobus gouldii). Journal of Reproduction and Fertility, 108: 171-177.
• Jerrett, D. P. 1979. Female reproductive patterns in nonhibernating bats. Journal of Reproduction and Fertility, 56: 369-378.
• Krutzsch, P. H., and E. G. Crichton. 1987. Reproduction biology of the male little mastiff bat, Mormopterus planiceps (Chiroptera: Molossidae), in Southeast Australia. American Journal of Anatomy, 178: 352-368.
• Krutzsch, P. H., and W. A. Wimsatt. 1963. Some normal values of peripheral blood in the vampire bat. Journal of Mammology, 44: 556-559.
• Krutzsch, P. H., R. H. Watson, and C. D. Lox. 1976. Reproductive ability of the male leaf-nosed bat, Macrotus waterhousii in Southwestern United States. Anatomical Record, 184: 611-636.
• Lloyd, S., L. S. Hall, and A. J. Bradley. 1999. Reproductive strategies of a warm temperate vespertilionid, the large-footed myotis, Myotis moluccarum (Microchiroptera: Vespertilionidae). Australian Journal of Zoology, 47: 261-274.
• Loh, H. S. F., and R. T. Gemmell. 1980. Changes in the fine structure of the testicular Leydig cells of the seasonally-breeding bat, Myotis adversus. Cell and Tissue Research, 210: 339-347.
• Martin, L. and R. T. F. Bernard. 2000. Endocrine regulation of reproduction in bats: the role of circulating gonadal hormones. Pp. 27-64, in Reproductive biology of bats (E. G. Crichton and P. H. Krutzsch, eds.). Academic Press, London, ii + 510 pp.
• Miller, R. E. l939. The reproductive cycle in male bats of the species Myotis lucifugus lucifugus and Myotis grisescens. Journal of Morphology, 64: 267-295.
• Myers, P. 1977. Patterns of reproduction of four species of vespertilionid bats in Paraguay. University of California Publication in Zoology, 107: 1-41.
• Oxberry, B. A. 1979. Female reproductive patterns in hibernating bats. Journal of Reproduction and Fertility, 56: 359-367.
• Phillips, W. R., and S. J. Inwards. 1985. The annual activity and breeding cycles of Gould's long- eared bat, Nyctophilus gouldi (Microchiroptera: Vespertilionidae). Australian Journal of Zoology, 33: 111-126.
• Racey, P. A. 1974. The reproductive cycle in male noctule bats, Nyctalus noctula. Journal of Reproduction and Fertility, 41:169-182.
• Racey, R A., and M. Swift. 1981. Variations in gestation length in a colony of pipistrelle bats (Pipistrellus pipistrellus) from year to year. Journal of Reproduction and Fertility, 61: 123-129.
• Racey, R A., and W. H. Tam. 1974. Reproduction in male Pipistrellus pipistrellus (Mammalia: Chiroptera). Journal of Zoology (London), 172: 101-122.
• Richards, G. C. 1983. Large-footed mouse-eared bat. Pp. 346-347, in Complete book of Australian mammals (R. Strahan, ed.). Harper Collins Publishers, North Ryde, 530 pp.
• Tidemann, C. R. 1993. Reproduction in the bats Vespadelus vulturnus, Vespadelus regulus and Vespadelus darlingtoni (Microchiroptera: Vespertilionidae) in coastal south-eastern Australia. Australian Journal of Zoology, 41: 21-35.
• Van Aarde, R. J., M. van der Merwe, and D. C. Skinner. 1994. Progesterone concentrations and contents in the plasma, ovary, adrenal gland and placenta of the pregnant natal clinging bat, Miniopterus schreibersi natalensis. Journal of Zoology (London), 232: 457 464.
• van der Merwe, M., and I. L. Rautenbach. 1990. Reproduction in the rusty bat, Pipistrellus rusticus, in the northern Transvaal bushveld. South Africa Journal of Reproduction and Fertility, 89: 537-542.
• Wilson, D. E., and J. S. Findley. 1970. Reproductive cycle of a neotropical insectivorous bat, Myotis nigricans. Nature, 225: 1155.