title: First record of anisakid juveniles (Nematoda) in the European seabass Dicentrarchus labrax (family: Moronidae), and their role as bio-indicators of heavy metal pollution.
abstract: 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.
authors.affiliation: Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt.
authors.forename: Kareem
authors.initials: K
authors.lastname: Morsy
authors.forename: Abdel-Rahman
authors.initials: AR
authors.lastname: Bashtar
authors.forename: Fathy
authors.initials: F
authors.lastname: Abdel-Ghaffar
authors.forename: Heinz
authors.initials: H
authors.lastname: Mehlhorn
authors.forename: Saleh Al
authors.initials: SA
authors.lastname: Quraishy
authors.forename: Magda
authors.initials: M
authors.lastname: El-Mahdi
authors.forename: Ali
authors.initials: A
authors.lastname: Al-Ghamdi
authors.forename: Nesma
authors.initials: N
authors.lastname: Mostafa
mesh_terms: D000818:Animals; D017129:Anisakiasis / Q000469:parasitology / Q000662:veterinary*; D017163:Anisakis / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism / Q000648:ultrastructure; D001492:Bass / Q000378:metabolism / Q000382:microbiology*; D004534:Egypt; D004784:Environmental Monitoring / Q000379:methods*; D005393:Fish Diseases / Q000469:parasitology; D007814:Larva / Q000378:metabolism / Q000648:ultrastructure; D008522:Mediterranean Sea; D019216:Metals, Heavy / Q000378:metabolism*; D008855:Microscopy, Electron, Scanning; D014873:Water Pollutants / Q000378:metabolism*; D014876:Water Pollution / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D014873:Water Pollutants