Logo image
Back
Population dynamics of Trichostrongylus colubriformis in sheep: Mathematical model of worm fecundity
Journal article   Peer reviewed

Population dynamics of Trichostrongylus colubriformis in sheep: Mathematical model of worm fecundity

E.H. Barnes and R.J. Dobson
International Journal for Parasitology, Vol.20(3), pp.375-380
1990
DOI: https://doi.org/10.1016/0020-7519(90)90154-F
url
Link to Published Version *Subscription may be requiredView

Abstract

A mathematical model was constructed to predict the egg production of Trichostrongylus colubriformis worms as a function of worm age and host experience of infection. The model set egg production at zero until the worm was 14 days old, when a linear increase to maximum egg production levels occurred over 7 days. It was assumed that egg production remained at maximum levels until a threshold total worm burden was exceeded, when an exponential decline in egg production occurred. The rate of decline was assumed independent of worm age or worm burden. The estimated parameters (maximum egg production, threshold, lag and rate of decline) were optimized by fitting values predicted from the model to faecal egg counts observed in continously infected sheep, giving R2 = 0.80. The model was validated against faecal egg counts obtained in two other continuous infection experiments, one performed at the same laboratory and the other in Britain.

Details

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

#3 Good Health and Well-Being

Source: InCites

Metrics

55 Record Views
11 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Citation topics
1 Clinical & Life Sciences
1.163 Parasitology - General
1.163.1022 Anthelmintic Resistance
Web Of Science research areas
Parasitology
ESI research areas
Microbiology
Logo image