Diet and parasites of the jumbo squid Dosidicus gigas in the Humboldt Current System

M. Cecilia Pardo-Gandarillas, Karin B. Lohrmann, Mario George-Nascimento, Christian M. Ibáñez

Resultado de la investigación: Article

6 Citas (Scopus)

Resumen

The habitat and diet can vary through host ontogeny, and, therefore, affect its parasitic fauna. We examined the relationship between diet and endoparasites of 124 Dosidicus gigas from coastal (73) and oceanic areas (51) of central Chile. The numerical descriptors and composition of 82 stomach contents and 120 infracommunities of parasites were evaluated. A total 24 prey items were identified in stomach contents. The infracommunities were composed of 1544 individuals belonging to six parasitic taxa. Host mantle length best explained the variation of the infracommunity descriptors, while the change of host diet was explained by the fishing zone factor. From 77 jumbo squids in which stomach contents and parasites were analyzed together, no significant association was found between the prey and parasites. D. gigas does not increase its trophic niche breadth through ontogeny, because the largest squids primarily feed on fish. The infracommunity descriptors showed an increase in relation to squid length. The feeding strategy of D. gigas may explain the absence of correlation between the diet and parasites. We recommended the application of stable isotopes, to avoid the problem of different incoming rates of parasites and prey, to study the association between the diet and parasites.

Idioma originalEnglish
Páginas (desde-hasta)10-19
Número de páginas10
PublicaciónMolluscan Research
Volumen34
N.º1
DOI
EstadoPublished - 2014

Huella dactilar

Dosidicus gigas
Decapodiformes
parasite
Parasites
diet
Diet
parasites
Gastrointestinal Contents
stomach content
stomach
ontogeny
squid
endoparasite
niche breadth
feeding methods
endoparasites
Chile
Isotopes
stable isotopes
Ecosystem

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology
  • Genetics

Citar esto

Pardo-Gandarillas, M. Cecilia ; Lohrmann, Karin B. ; George-Nascimento, Mario ; Ibáñez, Christian M. / Diet and parasites of the jumbo squid Dosidicus gigas in the Humboldt Current System. En: Molluscan Research. 2014 ; Vol. 34, N.º 1. pp. 10-19.
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Diet and parasites of the jumbo squid Dosidicus gigas in the Humboldt Current System. / Pardo-Gandarillas, M. Cecilia; Lohrmann, Karin B.; George-Nascimento, Mario; Ibáñez, Christian M.

En: Molluscan Research, Vol. 34, N.º 1, 2014, p. 10-19.

Resultado de la investigación: Article

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