Some observations on the reproductive biology of collared pika Ochotona rufescens Gray, 1842 from Ziarat Valley, Baluchistan, Pakistan

• Autorzy: Shafi M. M. , Rizvi S.W.A. , Pervez A. , Ali R. , Shah S.Z.
• Języki publikacji: EN

Abstrakty

EN

Some reproductive parameters of collared pika Ochotona rufescens Gray, 1842 were studied during the winter from Ziarat Valley, Baluchistan. Out of 195 animals cap­tured, 105 (53.8%) were males and 90 (46.2%) females. Males were bigger and heavier than non-pregnant females. Mean litter size according to embryo count was 3.6 ± 1.6 (range: 1-7 young/female), and by placental scars 4.48 ± 0.30 (range: 2-6 young/ female). Mean HBL of primiparous females was less than multiparous females. The higher fecundity rate of pika helps to attain its pest status in apple orchards.

Słowa kluczowe

EN

Ochotona rufescens; Pakistan; collared pika; pika; Baluchistan; reproductive biology

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1992
• Tom: 37
• Numer: 4
• Opis fizyczny: p.423-427

Twórcy

autor

Shafi M. M.

• Pakistan Agricultural Research Council, P.O.Box 8401, University Campus, Karachi-75270, Pakistan

autor

Rizvi S.W.A.

autor

Pervez A.

autor

Ali R.

autor

Shah S.Z.

Bibliografia

• Fulk G. W. and Khokhar A. R. 1980. Observations on the natural history of a pika (Ochotona rufescens) from Pakistan. Mammalia 44: 51 - 58.
• Khan A. A. and Smythe W. R. 1980. The problem of pika control in Baluchistan, Pakistan. In. Proc. Vert. Pest Conf. California (USA) : 130 - 133.
• Markham O. D. and Whicker F. W. 1973. Seasonal data on reproduction and body weights of pikas (Ochotona princeps). J. Mammal. 54: 496 - 498.
• Millar J. S. 1974. Success of reproduction in pikas Ochotona princeps (Richardson). J. Mammal. 55: 527 - 542.
• Puget A. 1973. Ochotona rufescens in captivity: reproduction and behaviour. J. Inst. Ani. Tech. 24: 17 - 24.
• Puget A. and Gouarderes G. 1974. Weight gain of the Afghan pika (Ochotona rufescens) from birth to 19 weeks of age, and during gestation. Growth 38: 117 - 129.
• Roberts T. J. 1977. The Mammals of Pakistan. Ernest Benn. Limited., London: 1 - 361.
• Severaid J. H. 1955. The natural history of the pikas (Mammalia, genus Ochotona). Unpublished Ph.D. thesis, Univ. California, Berkeley: 1 - 820.
• Shall M. M., Pervez A. and Ahmed S. M. 1989. Collared pika (Ochotona rufescens) damage to apple orchards in Ziarat Valley, Baluchistan. Pak. J. Agri. Res. 10: 200 - 203.
• Siddiqui M. S. 1961. Checklist of Mammals of Pakistan with particular reference to the Mammalian collection in the British Museum (Natural History) - London. Biologia, Vol. 7 (1 and 2), 93 - 225.
• Smith A. T. 1974. The distribution and dispersal of pikas: influence of behaviour and climate. Ecology 55: 1368 - 1376.
• Walker E. P. 1975. Mammals of the World. The Johns Hopkins University Press, Baltimore, London: 1 - 1500.