Pasture populations of cattle nematode larvae in Guadeloupe (French West Indies).
The development of numbers of third-stage (L3) larvae of gastrointestinal nematodes after pat (faeces) deposition by heifers is described, using a mathematical model, for seven experiments carried out in Guadeloupe (French West Indies). A dramatic rise in L3 population size occurred on herbage near pats, 17-25 days after pat deposition. There was no clear relationship between climatic data and L3 population dynamics. However, 5 successive days of rainfall induced the resumption of larval migration in two experiments. Changing the unit of expression of L3 population size (100 L3 m-2 vs 1000 L3 per kg DM) did not alter estimates of the model parameters. The evolution of L3 population of Haemonchus and Cooperia were similar.
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G
Aumont
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G
Coulaud
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A
Grude
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L
Gruner
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D005260:Female; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D009348:Nematoda / Q000254:growth & development*; D009349:Nematode Infections / Q000469:parasitology / Q000662:veterinary*; D011891:Rain; D014329:Tropical Climate; D014900:West Indies