Using length-frequency data to elucidate the population dynamics of Argulus foliaceus (Crustacea: Branchiura).
Parasitology
; 136(9): 1023-32, 2009 Aug.
Article
em En
| MEDLINE
| ID: mdl-19549354
ABSTRACT
This study uses a novel method for discriminating cohorts and investigating the population dynamics of the parasitic crustacean, Argulus foliaceus. Analysis of parasite length-frequency data was carried out in order to elucidate the timings and drivers behind the parasite's life cycle. Up to 6 cohorts of the parasite emerge through the course of 1 year in still-water trout fisheries in England. Recruitment ceases over the winter months; however, 3 cohorts of the parasite over-winter, 2 as eggs and 1 as a hatched stage. The technique, when used in conjunction with temperature data, also allowed for the reliable prediction of growth rates and provided estimates of egg incubation times and the length of hatching periods. These data showed that growth rates increased exponentially between the observed temperatures of 4 to 22 degrees C. The method allowed for the time taken from hatching to egg laying under field conditions to be predicted and produced estimates that were validated against independent laboratory studies on the growth of the parasite.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oncorhynchus mykiss
/
Crustáceos
/
Doenças dos Peixes
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Parasitology
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Reino Unido