The seasonality of recruitment and reproduction of Acanthocephalus tumescens at the component population level was investigated in Lake Moreno (Patagonia, Argentina). Seasonal samples of the principal fish host species were taken between spring 1999 and spring 2000. Prevalence, mean intensity, coefficient of dispersion, sex ratio, proportion of maturity stages of females, and percentages of the 2 sources of infection in the stomach of fishes were calculated. Overall prevalence, mean intensity, and coefficient of dispersion showed the same pattern of seasonal changes. The seasonal feeding patterns of fishes affect the occurrence of A. tumescens, producing 1 peak in spring and the other peak in autumn. The lower temperature in winter delay reproductive processes after the autumn period of recruitment.
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December 2006
Research Article|
December 01 2006
SEASONALITY OF RECRUITMENT AND REPRODUCTION OF ACANTHOCEPHALUS TUMESCENS (ACANTHOCEPHALA) IN FISHES FROM LAKE MORENO (PATAGONIA, ARGENTINA)
Carlos A. Rauque;
Carlos A. Rauque
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina. crauque@crub.uncoma.edu.ar
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Liliana G. Semenas;
Liliana G. Semenas
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina. crauque@crub.uncoma.edu.ar
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Gustavo P. Viozzi
Gustavo P. Viozzi
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina. crauque@crub.uncoma.edu.ar
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J Parasitol (2006) 92 (6): 1265–1269.
Citation
Carlos A. Rauque, Liliana G. Semenas, Gustavo P. Viozzi; SEASONALITY OF RECRUITMENT AND REPRODUCTION OF ACANTHOCEPHALUS TUMESCENS (ACANTHOCEPHALA) IN FISHES FROM LAKE MORENO (PATAGONIA, ARGENTINA). J Parasitol 1 December 2006; 92 (6): 1265–1269. doi: https://doi.org/10.1645/GE-764R1.1
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