首页|Effect of temperature on the development of the free-living stages of horse cyathostomins
Effect of temperature on the development of the free-living stages of horse cyathostomins
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NSTL
Elsevier
Cyathostomins are considered as the most prevalent and pathogenic parasites of grazing horses. The development on pastures of the free-living stages of these gastrointestinal worms is particularly influenced by outdoor temperature. Understanding the bionomics of free-living stages is an important prerequisite to implement mathematical models designed to assess the parasitic risk for grazing equids. The aim of this study was to assess the effect of 3 constant temperatures under laboratory conditions (10 +/- 1 & nbsp;?, 23 +/-& nbsp; 2 C, 30 +/- 2 ?) and one fluctuating temperature under outdoor conditions (mean: 17 +/- 4 ?) on the minimum time taken by cyathos-tomin eggs to develop into first/second stage larvae (L1/L2) then into infective third stage larvae (L3) in horse faeces.& nbsp;According to the temperatures, the minimum time taken by eggs to develop into L1/L2 was between 1 and 3 days and into L3 between 4 and 22 days. At 10 ?, the development time of eggs into L3 was the longest and at 30 ? the fastest. The results were consistent with historically available data and their compilation should lead to the improvement of parameterised models assessing the parasitic risk period in grazing equids.
NSTL
Elsevier
