Composition and abundance of pelagic shark by-catch in the eastern Mediterranean Sea

Authors: 

Megalofonou, P., Damalas, D., Yannopoulos, C.

Year: 

2005

Journal/Publisher Name: 

Cybium

Publisher Address: 

Cybium, Société Française d’Ichtyologie, Paris, France ISSN : 2101-0315

Volume (Issue #): 

29(2)

Page #s: 

135-140

Contact information: 

P. Megalofonou Department of Biology, University of Athens, Panepistimiopolis, 15784 Athens, GREECE. [p.megalo@biol.uoa.gr]
Summary: 

During the period 1998-2001, a survey to study the incidence of the drifting longline fishery on shark populations was carried out in the eastern Mediterranean Sea. A total of 8 different pelagic shark species were recorded in the catches of the Greek swordfish and albacore longline fisheries. Among them, the blue shark, Prionace glauca, was the most common species in the catches while the bigeyed sixgill shark, Hexanchus nakamurai, was reported for the first time in the area. Shark by-catches were noteworthy in the swordfish fishery reaching a 3.8% in number and 3.6% in biomass of the total catch. The higher abundance indices were observed in the Levantine Basin (CPUE = 0.74 sharks/1,000 hooks). Catches in this area consisted of much larger specimens than those measured in other areas of the Mediterranean Sea.