M. Culha*, H.
and O. Aksoy
Department of Hydrobiology,
Faculty of Fisheries,
Izmir Katip Celebi University,
Izmir, 35620, Turkey
*Corresponding Author Email :
Aim: Benthic organisms
in marine sediments affect several processes in which seas and oceans are
very important. These organisms can represent the biodiversity, alive
composition, biomass and prolificacy of the associated biota. The aim of this
study was to determine the environmental effects of offshore aquaculture
systems based on macrobenthic mollusc composition and the structure of its
community in Ildır Bay during specific spatial and temporal patterns.
Methodology: The benthic
samplings of the zoobenthic organisms in the region were performed by means
of Van Veen grab (10 l) from the sea sediment. In the laboratory,
macrobenthic organisms were separated into main taxonomic groups. Various
statistical methods were applied to establish the distributional and
ecological characteristics of molluscan species and individuals.
Results: The results of
the present study indicated 44 species and 1287 individuals belonging to 33
families of Mollusca. T. distorta and C. gibba, which are
particularly indicative of pollution, were found uncommon in the study area
and stations. T. communis was found to be the most dominant (45%).
With regard to mollusca species, in particular the fish farm was found to
have no discernible negative effect at the sampling sites.
Interpretation: Live fauna that
were found inside and above the sediments at the sea bottom can be used as a
decisive factor in fishery and aquaculture activities.
Aegean Sea, Cluster, Environmental evaluation,
Molluscan biodiversity, Offshore cage
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