Simulating the development period of a parasite of sheep on pasture under varying temperature conditions

Onyiah L., ARSLAN O.

JOURNAL OF THERMAL BIOLOGY, cilt.30, sa.3, ss.203-211, 2005 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 3
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.jtherbio.2004.10.003
  • Dergi Adı: JOURNAL OF THERMAL BIOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.203-211
  • Anahtar Kelimeler: development, stochastic model, Haemonchus contortus, sheep parasite, HAEMONCHUS-CONTORTUS, STOMACH WORM, POPULATION, LARVAE, MODEL, TIME
  • Ankara Üniversitesi Adresli: Hayır

Özet

This paper uses regression and simulation to develop some stochastic models of time to completion of development (TTCOD) of a parasite of sheep on pasture under the influence of temperature in the presence of adequate moisture. A statistical distribution is fitted to the development of the parasite at the prevalent average temperature for the day. Approximate solutions using Newton-Raphson method, and MLE estimates were obtained for parameters, and Monte Carlo methods were used to simulate the distributions of development of the parasite at constant and varying temperatures, tracking the stochasticity of the completion of development of the parasite on pasture where its infectivity is a menace to livestock and livestock farmers. The simulated distribution provides a tool for predicting infectivity, which can lead to strategies for containing or eliminating infection. (c) 2004 Elsevier Ltd. All rights reserved.