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Eumetazoan parasites of two marine fish species from Baja California, Mexico: Sebastes miniatus (Jordan & Gilbert, 1880) and Caulolatilus princeps (Jenyns, 1840)
Author(s) -
RodríguezSantiago M. A.,
RosalesCasián J. A.,
GranoMaldonado M. I.
Publication year - 2016
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13093
Subject(s) - biology , digenea , monogenea , cestoda , zoology , elasmobranchii , parasite hosting , ecology , fishery , helminths , trematoda , gill , fish <actinopterygii> , world wide web , computer science
Summary It is hypothesized that two fish species sharing a same demersal habitat might show a similar community of parasites. The aim of this study was to compare the parasite community component of of two marine fishes on the northwest coast of México of economical interest, the vermilion rockfish Sebastes miniatus and the ocean whitefish Caulolatilus princeps . From February to December 2005, 210 specimens of S. miniatus (85–550 mm total length TL ) and 91 C. princeps (85–550 mm TL ) were obtained from the San Quintín sportfishing catch, at Pacific Baja California. Skin, eyes, fins and gill cavity were examined in situ , and their internal organs removed for later analysis, including a portion of flesh. In S. miniatus , 12 parasite taxa were identified as belonging to Monogenea, Digenea, Cestoda, Nematoda, Acanthocephala and Copepoda; the stomach, pyloric caeca, and intestine (digestive tract) were the most parasitized organs with seven of the 12 species. In S. miniatus , the most abundant parasite was Parabothriocephalus sagitticeps (80.8 individuals/host ± 33.4 SE : standard error), highest prevalence was Microcotyle sebastis (92.6%), and the highest average intensity of infection was the cestode P. sagitticeps (190.4 ± 48.1 SE ). The C. princeps showed six species belonging to Monogenea, Digenea, Nematoda and Copepoda; the digestive tract presented the greatest infestation, with four of the six species recorded. The most abundant nematode was Hysterothylacium aduncum (16.5 ± 3.5 individuals/host), the main prevalent species was Anisakis sp., and the highest value of infection intensity was by Hatschekia sp. The nematodes Anisakis sp. and H. aduncum were shared between the two host fishes, and are a zoonotic risk to humans if the fishes are not cooked properly.