Parasitology Research

, Volume 101, Issue 3, pp 761–766 | Cite as

Infestation status of gnathiid isopod juveniles parasitic on Dusky grouper (Epinephelus marginatus) from the northeast Mediterranean Sea

Original Paper


This is the first detailed documented record of Gnathiid isopod praniza larvae infestating dusky grouper, (Epinephelusmarginatus Lowe 1834) in the northeast Mediterranean Sea (36°36′N–36°07′E, 35°52′N–36°25′E). Fish were sampled monthly from Iskenderun Bay during a 3-year period from 2000 to 2003 [N = 468, W ± SD (range) = 503.69 ± 342.35 g (177–2,832 g), TL ± SD (range) = 32.39 ± 9.22 cm (16.1–67.0 cm), Wtotal = 0.213Ltotal2.19, rtotal2 = 0.85]. Juveniles of the Gnathia sp. were only extracted from the epithelium of the buccal cavity. The monthly and seasonal patterns in infestation rates (mean prevalence, P = 27.35% and mean intensity, MI ± SD = 21.35 ± 16.19), and the relationship between length–weight and infested/non-infested fish were calculated. This study suggests that gnathiid parasite has no effect on the growth and general health condition of infested fish, although high intensities were observed in fish.


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Fish Diseases Laboratory, Faculty of FisheriesMustafa Kemal UniversityHatayTurkey

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