A total of 48 randomly selected fish farms from the coasts of Izmir and Muğla, Aegean Sea were visited face-to-face interviewing with fish farmers and a total of 329 coastal fishermen, catches around the sea-cage fish farms between July 2015 and July 2017. We asked them the reasons for fish escapes from sea-cage fish farms. Answers were concerning with the predator attacks, storms, biting of cage-nets by reared fish and seabirds, slits of the nets, drop during transfer, etc.

In this study, the level of knowledge of the sea turtles that encounter fishing gears from time to time and the attitudes of fishermen on the Turkish coast of the Aegean Sea to these living beings were investigated. Data were collected from a total of 404 fishermen in 98 fisheries cooperatives in 5 provinces (Çanakkale, Balıkesir, İzmir, Aydın and Muğla) by face-to-face survey between August 2016 and October 2017. It was ascertained that the 91% of fishermen, who participated in the survey, do not know what kinds of sea turtles are distributed in the Aegean Sea. The 95% of fishermen do not also know the role of these living beings that show wide range of distribution on world’s oceans and seas, in the ecosystem. Moreover, it is revealed that the fishermen do not have enough knowledge about to perform an intervention in an injured turtle. After getting information from the informative brochures and awareness presentations about sea turtles, fishermen became familiar with the nature of sea turtles, they have changed their attitudes, approach and perspectives to them although they firstly behaved timid to participate in the studies on sea turtles. It is useful to make more social responsibility projects and collaborations with fishermen in areas where these living beings are intense in order to ensure the sustainability of sea turtles on the coast of Aegean Sea.

A total of 46 chub mackerel and 23 Atlantic mackerel samples were taken from the commercial fishermen engaged in purse seine fishing from the Izmir Bay during the fishing period of 2020-2021. The samples were dissected in the laboratory, 15 ovaries from mature females were taken and fecundity was determined. The minimum, maximum and mean values of total length of Scomber scombrus respectively; It is 26.9-31 cm (mean: 28.89±1.44), 150 420-454 260 (mean: 259 300±97 369). A linear relationship was determined between total length fecundity in mackerel and this value was TL=25.396+0.000013×F (R2=0.83). Oocyte diameter; It is 1.1-.2 (mean: 1.16±0.10) mm. The minimum, maximum and mean values of total length of Scomber colias respectively; it is 25.1-25.9 cm (mean: 25.59±0.26), fecundity 134 853-417 500 (mean: 322 381±84 172). A linear relationship was found between total length fecundity in lichen and this value was TL=24.682+0.000003×F (R2=0.80). Oocyte diameter; It is 0.99-1 (mean:1.02±0.06) mm.

Çalışmada Ildır Körfezi, Çeşme (Ege Denizi)’nin üç farklı bölgesinden Mart-Nisan 2018 tarihlerinde ticari trol teknesi ile elde edilen Echelus myrus (Linnaeus, 1758) bireylerinin üreme özellikleri incelenmiştir. Örneklerde boy ve ağırlık değerleri sırasıyla; 55,5-97,0 (70,63±12,85) cm, 180,84-420,83 (276,50±70,50) g’dır. Boy-ağırlık ilişkisi W=0.2936L1.61 (R2=0,96)’dir. Fekondite; 25563-55016 (41811±9416) oosit olarak tespit edilmiş olup total boy-fekondite arasında F=658.54L-5603.9 (R2=0,86) şeklinde doğrusal bir ilişki saptanmıştır. Oosit çapları; 0,84-1,09 mm (0,95±0,06) olarak tespit edilmiştir.