Meat Yield and Shell Dimension of Smooth Scallop (Flexopecten glaber) Caught from Çardak Lagoon in Canakkale, Turkey
In this research, meat yield and shell dimension of smooth scallop (Flexopecten glaber) were specified. 150 individuals of smooth scallop were caught by dredges seasonally in Cardak lagoon on Canakkale strait, Turkey. According to results, the relationship of total shell length between total shell weight was determined as TW = 0.5207* TL 2.4533 (R2= 0.73). Moreover, meat yield of scallop was determined highest as whole meat in spring and as adductor muscle in summer. This paper reveals basic growth data of smooth scallop and its preliminary study for Cardak lagoon which is important bivalve inhabiting area.
BIVALVE AND GASTROPOD MOLLUSCS OF COMMERCIAL INTEREST FOR HUMAN CONSUMPTION IN THE HELLENIC SEAS
HISTORICAL DATA AND PRESENT STATE Gastropods and Bivalves consist of two of the older and more evolved classes in the phylum Mollusca. Aristotle (384-322 BC) in his ‘Histories about animals’ and ‘Genesis of animals’ has included gastropods and bivalves in the animals bearing ‘shell’ and termed ‘shell skinned animals’. Aristotle was also the first who provided information on the morphology, reproduction and life-cycle characteristics for few mainly edible gastropod and bivalve species. plenius (23-79 BC) was the first to introduce the term ‘molia’ (soft body) for these animals out of which the term Mollusca is derived. Plenius has also provided information for certain gastropod and bivalve species which were used by the ancient Romans either for food or for making jewelry. A review of the relevant literature reveals that more than 1 100 gastropod and bivalve species have been recorded so far from the Hellenic Seas (KOUTSOUBAS, 1992; ZENETOS, 1996; KOUTSOUBAS et al., 1997, 2000; KOUTSOUBAS, 2005; DELAMOTTE & VARDALA-THEODOROU, 2001; ZENETOS et al., 2005). Twenty-one of these species (Table 1) have a commercial interest particularly in fisheries and aquaculture since they are collected and/or cultivated for human consumption. Fisheries of these species is regulated by the Ministry of Agriculture (General Directorate of Fisheries) and supported by the relative legislation (Presidential Degree 86/98 as it has been recently reformed 227/03). The minimum size allowed for fisheries and the closed fisheries period for selected species, according to the Presidential II.5. BIVALVE AND GASTROPOD MOLLUSCS OF COMMERCIAL INTEREST FOR HUMAN CONSUMPTION IN THE HELLENIC SEAS D. Koutsoubas1*, S. Galinou-Mitsoudi2, S. Katsanevakis3, P. Leontarakis4, A. Metaxatos5 & Zenetos A.6
Computer simulations and theory of oceanographic fluorescence lidar signals: effect of sea surface structure.
A 3-D computer simulation model has been developed using geometrical optics suitable for analyzing the effect of sea surface structure on oceanographic fluorescence lidar signals. Depth-resolved and depth-integrated signals reveal a considerable dependence on the surface structure. The results obtained by simulation are confirmed by a theoretical approach based on the transformation of solid angles by curved boundaries. Using statistical assumptions about the distribution of curvatures of the ocean surface, a general expression for this influence is found.