INVESTIGATIONS OF SOME BIVALVE MOLLUSKS
IN BOURGAS BAY
(BULGARIAN BLACK SEA
COAST)
Elitsa Petrova, Stoyko Stoykov
Institute of Fishing Resources – Varna, Blvd.”Primorski” 4, 9000 Varna, Bulgaria
elitssa@yahoo.com
The distance between the northern and southern point on
the Bulgarian Black Sea coast on straight line is 199 kilometers and
actually the length of the coastline is 378 kilometers. In the western
part of the Black Sea
Bourgas Bay,
the largest bay along the Bulgarian Black Sea coast, is situated. Its
maritime boundary passes through the line cape Emine
in the north and town Sozopol to the south. On this line the width is 33
km and the length 25 km. Its maximal depth is 36.5 meters. In the region
of the Large
Bourgas Bay
zones are located providing conditions for life and reproduction of
bivalve mollusks. The paper presents the results from investigations of
two mollusks species – the sand mussel Chamelea gallina (L., 1758) and the black mussel Mytilus galloprovincialis (L.,
1819). Our investigations
include the fields in the sand sublitoral for the sand mussel and in the
mud sublitoral for the black mussel. The best catch of Chamelea gallina was found in the
field “Sunny Beach” – 563 tones and for Mytilus galloprovincialis in the
field in the front cape Emine – 25,111 tones.
Key words:
Black Sea; Bourgas
Bay; bivalve
mollusks; stock assessment
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