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Survival of sheep and goat first stage protostrongylid larvae in experimental conditions: influence of humidity and temperature

Published online by Cambridge University Press:  05 June 2009

J. Cabaret ,
S. Risye Riseani  and
E. Baeza
J. Cabaret
Affiliation:
INRA, Station de Pathologie aviaire et Parasitologie, Unité d'Ecologie des Parasites, 37380 Nouzilly, France
S. Risye Riseani
Affiliation:
INRA, Station de Pathologie aviaire et Parasitologie, Unité d'Ecologie des Parasites, 37380 Nouzilly, France
E. Baeza
Affiliation:
INRA, Station de Pathologie aviaire et Parasitologie, Unité d'Ecologie des Parasites, 37380 Nouzilly, France
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Abstract

The survival of first-stage larvae of a laboratory strain of Muellerius capillaris and of a natural multispecific infection (Neostrongylus linearis, Cystocaulus nigrescens, Protostrongylus rufescens) was studied for 10 to 12 day periods. The survival was estimated either on larvae in faeces or kept in tap water. Temperature (−18°C to 37°C) and desiccation were the ecological factors investigated. M. capillaris was the most tolerant to these factors but showed better survival at 4°C (and at − 18°C on one occasion). N. linearis survived better at 25°C or − 18°C and C. nigrescens at 4°C and − 18°C. Humidification of faeces was unfavourable to the latter species. All the species could stand desiccation of faeces up to 67% of dry-matter for M. capillaris or 82% for other species. Larval survival estimated for L1 in tap water was different from that estimated for larvae in faeces. The variation in resistance to unfavourable temperatures or moisture conditions may account partly for the geographical distribution of the species

Keywords

first-stage larvaeprotostrongylidstemperaturedesiccationsurvivalphysiologyNematoda
Type
Research Papers
Information
Journal of Helminthology , Volume 65 , Issue 3 , September 1991 , pp. 201 - 207
Copyright
Copyright © Cambridge University Press 1991

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References

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