Helminthic assemblages of Seriolella porosa Guichenot 1848 (Pisces: Centrolophidae) from San Matías Gulf (Argentina)

GUAGLIARDO SE; SCHWERDT CB; GALEANO AN; GONZÁLEZ R; TANZOLA RD

Neotropical Helminthology

Asociación Peruana de Helmintología e Invertebrados Afines (APHIA)

Lugar: Lima; Año: 2014 vol. 8 p. 291 - 303

2218-6425

No previous studies have beencarried out on aspects of the helminth community of Seriolella porosa. Thepresent study aims to analyze the metazoan parasite community of S. porosa andestablish the relationship between the parasitic variations and both fish sizeand sex. A total of 101 specimens of S. porosa from San Matías Gulf wereexamined between September and October 2006. Thirteen species were reportedwith a total of 3366 parasites. Lecithocladium cristatum was the mostprevalent, dominant and abundant species. The average species richness was 3.2± 1.20. The evenness showed an inverse correlation with the total number ofparasites and did not reveal differences between host sexes. None of theparasite species showed interspecific associations with each other. The averagerichness of the infracommunity was significantly less than the componentcommunity. The helminth community of the silver warehou shows little diversitywith many satellite species and only two core species (Anisakis sp. and L.cristatum). Further studies, using parasites as stock indicators, wouldindicate whether the San Matías population represents a reproductiveaggregation that penetrates the gulf seasonally in winter or whether it is apermanent stock isolated from the continental shelf.