First record of anisakid juveniles (Nematoda) in the European seabass Dicentrarchus labrax (family: Moronidae), and their role as bio-indicators of heavy metal pollution

• Published in: Parasitology research (1987) 2012-03, Vol.110 (3), p.1131-1138
• Main Authors: Morsy, Kareem, Bashtar, Abdel-Rahman, Abdel-Ghaffar, Fathy, Mehlhorn, Heinz, Al Quraishy, Saleh, El-Mahdi, Magda, Al-Ghamdi, Ali, Mostafa, Nesma
• Format: Article
• Language: English
• Subjects: Animal, plant and microbial ecology; Animals; Anisakiasis - parasitology; Anisakiasis - veterinary; Anisakis - growth & development; Anisakis - isolation & purification; Anisakis - metabolism; Anisakis - ultrastructure; Applied ecology; Bass - metabolism; Bass - microbiology; Biological and medical sciences; Biomedical and Life Sciences; Biomedicine; Dicentrarchus labrax; Ecotoxicology, biological effects of pollution; Egypt; Environmental Monitoring - methods; Fish Diseases - parasitology; Fundamental and applied biological sciences. Psychology; General aspects; General aspects and techniques. Study of several systematic groups. Models; Immunology; Invertebrates; Larva - metabolism; Larva - ultrastructure; Marine; Medical Microbiology; Mediterranean Sea; Metals, Heavy - metabolism; Microbiology; Microscopy, Electron, Scanning; Moronidae; Nemathelminthia. Plathelmintha; Nematoda; Orignal Paper; Water Pollutants - metabolism; Water Pollution - analysis
• ISSN: 0932-0113; 1432-1955
• DOI: 10.1007/s00436-011-2600-4

This study assessed the anisakid nematode distribution pattern in the fish collected from coasts of Mediterranean Sea, Egypt, during the period September 2010–April 2011. Two hundred thirty out of 300 (76.7%) Dicentrarchus labrax (European seabass) marine fishes belonging to family Moronidae were dissected and found to be infected with larva three nematodes. The larvae had been studied by light and scanning electron microscopy. The present work represents the first record of the presence of the parasite in this fish in the Mediterranean Sea. The concentrations of some heavy metals (Pb, Zn, Fe, Cd, Cu, Mn, Ni) in parasites as well as in tissues of fish were measured. The presented results showed that the nematode parasites are able to accumulate heavy metals in their tissues and in some cases that they are able to accumulate large amounts of heavy metals in a higher amount than host tissues. This demonstrated their sustainability as bioindicators of environmental pollution by removing heavy metals and help in the survival of fish.