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1992 | 37 | 4 |
Tytuł artykułu

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

Warianty tytułu
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.
Wydawca
-
Czasopismo
Rocznik
Tom
37
Numer
4
Opis fizyczny
p.423-427
Twórcy
autor
  • Pakistan Agricultural Research Council, P.O.Box 8401, University Campus, Karachi-75270, Pakistan
autor
autor
autor
autor
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 Unpublished Ph.D. thesis, Univ.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.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-article-8e6e3857-b112-4c8c-a007-bc158e7ede80
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