title: The effect of temperature on times to hatching of eggs of the nematode Ostertagia circumcincta.
abstract: A delayed gamma distribution satisfactorily described the distribution of times to hatching of Ostertagia circumcincta eggs incubated in 0.1% saline at temperatures between 6 and 20 degrees C. Below 6 degree C hatching of eggs was extremely variable. The relationship between rates of development and temperature within the range 10 to 20 degrees C was more closely described by a non-linear function than a linear one. The non-linear function was incorporated into a temperature summation equation which satisfactorily predicted the hatching of eggs incubated under conditions of alternating temperatures.
mesh_terms: D000818:Animals; D005260:Female; D010029:Ostertagiasis / Q000469:parasitology / Q000662:veterinary; D010063:Ovum / Q000502:physiology; D012756:Sheep; D012757:Sheep Diseases / Q000469:parasitology; D013696:Temperature; D013997:Time Factors; D014251:Trichostrongyloidea / Q000254:growth & development / Q000502:physiology*