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Acta Adriatica, Vol. 58 No. 1, 2017.

Original scientific paper

https://doi.org/10.32582/aa.58.1.5

Density and size structure of the endangered fan mussel Pinna nobilis (Linnaeus 1758), in the shallow water zone of Maliakos Gulf, Greece

John A. THEODOROU ; Department of Fisheries & Aquaculture Technology, Technological Educational Institute (TEI) of Western Greece, Nea Ktiria, GR 30200 Mesolonghi, Greece
Ross JAMES ; School of Biological Sciences, King Henry Building, University of Portsmouth, Portsmouth PO1 2DY, UK
Dimitrios TAGALIS ; 16 Kessarias Str., Edessa, Greece
Ioannis ΤZΟVENIS ; Ecology & Systematics Lab., Biology Dept., University of Athens, Panepistimioupolis, Zografou 15784, Greece
Claire HELLIO ; Laboratoire des Sciences de l’Environnement Marin-lemar umr 6539, Universite de Bretagne Occidentale, 29280 Plouzané, France
George KATSELIS ; Department of Fisheries & Aquaculture Technology, Technological Educational Institute (TEI) of Western Greece, Nea Ktiria, GR 30200 Mesolonghi, Greece

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Abstract

A total of 346 live animals of the endangered species fan mussel Pinna nobilis (Linnaeus 1758) were recorded in situ in the shallow water zone (<2m) within two sites of the marine protected area
“Natura 2000” of Maliakos Gulf (Central Hellas). Our results showed that the recorded length (from 11.89 to 72.51 cm) of the fan mussels corresponds to ages that cover the majority of the species life time. Population densities were comparable to the higher values recorded previously in the Mediterranean Sea. The spatial distribution of species was clumped. Estimated total mortality was close to estimated natural mortality indicating that fishing activity does not significantly affect the population density and mortality of fan mussel in the study area. Population densities were related
to sediment type, the buried length of animals was related to both sediment type and sea grass leaves size.

Keywords

Mediterranean; Maliakos Gulf; Pinna nobilis; fan mussel; population density; seagrass

Hrčak ID:

185172

URI

https://hrcak.srce.hr/185172

Publication date:

26.6.2017.

Article data in other languages: croatian

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