LENGTH-WEIGHT RELATIONSHIP AND CONDITION FACTOR OF THE MEDITERRANEAN TOOTHCARP, APHANIUS FASCIATUS (VALENCIENNES, 1821) FROM IZMIR COASTAL WATERS (AEGEAN SEA, TURKEY)

WOS: 000455562400016In this study, we determined the length-weight relationship and condition factor of Aphanius fasciatus collected at three different localities in Izmir province coastal waters, namely Camalti Salt Lake, Gulbahce Bay and Homa Lagoon. A total of 800 individuals, 580 females and 220 males, were caught using by beach-seine during seasonal samplings between March 2016 and February 2017. The total length and weight of the caught specimens ranged from 1.60 to 6.40 cm and 0.042-4.531 g in females; and 2.30-5.00 cm and 0.161-1.872 g in males respectively. Length-weight relationship parameters were calculated separately for each locality and sex. According to the results of growth type test, females had positive allometric growth in all localities, while males isometric in Camalti and Homa, and allometric growth in Gulbahce. The condition factor values estimated for each sex, season and locality varied between 0.67 to 2.35.Ege University Scientific Research Projects Coordination Unit, Turkey [15-SUF-010]This research was financially supported by the Ege University Scientific Research Projects Coordination Unit, Turkey (15-SUF-010)

A Study on the demersal fisheries resources of Edremit Bay

In this study, trawl catch data were collected by bottom trawl from the Edremit Bay (the northeastern Aegean Sea) with R/V K. Piri Reis during the three fisheries surveys conducted on 1-2 September 1999, 30 September 1999 and 11-12 December 2000 were analysed. All trawl hauls were towed between 38-71 m depths in the inner part of Edremit Bay, which was closed to bottom-trawl fishery. Each survey comprised eight hauls with three hour intervals. A total of 64 species were caught, containing 5 crustacean, 9 cephalopod, 9 cartilaginous fish and 41 bony fish. Almost 75% of the total catch was formed by bony fishes in the each sampling survey. Some of the dominant fishes in the sampling area such as hake (Merluccius merluccius), red mullet (Mullus barbatus), annular sea bream (Diplodus annularis), poor-cod (Trisopterus minutus capelanus), and lesser spotted dogfish (Scyliorhinus canicula) constituted more than half of the total catch. The total estimated biomasses based on the swept area method were 662.8 kg/km(2) for 1-2 September 1999, 1561.4 kg/km(2) for 30 September 1999 and 1518.6 kg/km(2) for 11-12 December 2000

Gut Contents of Two European Seahorses Hippocampus hippocampus and Hippocampus guttulatus in the Aegean Sea, Coasts of Turkey

WOS: 000294080100024This study investigates the diet of adult wild seahorses, Hippocampus hippocampus and Hippocampus guttulatus from the Aegean Sea, along the coasts of Turkey. A total of 47 fish stomachs (H. hippocampus = 25, H. guttulatus = 22) were analyzed to determine diet according to fish size and sex. Twenty one of specimens of H. hippocampus (84%) had prey in their stomachs. The remaining 4 fish (16%) had empty stomachs. Sixteen H. guttulatus (72.73%) had prey in their stomachs. The remaining 6 fish (27.27%) had empty stomachs. Whereas Mysidaceae (26.92%) and Amphipoda (23.08%) were the main prey groups in diet of H. hippocampus, Mysidaceae (42.59%) and Decapod crustacean larvae (22.22%) constituted the most important food source of II. guttulatus. Because H. guttulatus is a moderately generalized benthonic predator, the food diversity in its gut was greater than in H. hippocampus. There were no differences in diets between males and females of either seahorse species