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Some aspects of the infection of bib, Trisopterus luscus (L.), by the parasitic copepod Lernaeocera lusci (Basset‐Smith, 1896) in Portuguese waters
Author(s) -
Eiras J. C.
Publication year - 1986
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1986.tb05151.x
Subject(s) - biology , copepod , fish <actinopterygii> , veterinary medicine , range (aeronautics) , parasite hosting , portuguese , zoology , fishery , crustacean , materials science , linguistics , philosophy , medicine , world wide web , computer science , composite material
Winter samples totalling 2308 specimens of Trisopterus luscus (total length range: 13–36 cm) caught in northern Portugal were examined for infections with Lernaeocera lusci. Infection prevalence was of 42%, and infection intensity was 1.7 copepods per infected fish. Individual infection varied between 1 and 9 copepods per infected specimen; 30.6% of the fish had bilateral parasitosis. There was a significant correlation (P<0.01) between fish length and prevalence. Length‐weight relationships of uninfected and infected fish were not significantly different (P > 0.05) and thus provide evidence that L. lusci has no effect on the condition of T. luscus in all the examined 1–cm size classes.