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Turkish Journal of Fisheries and Aquatic Sciences 2011, Vol 11, Num, 4     (Pages: 623-630)

Migration Characteristics of the Black Sea Trout (Salmo trutta labrax, Pallas, 1814) in the Eastern Black Sea Coasts and Streams

Muharrem Aksungur 1 ,Mustafa Zengin 1 ,İlyas Tabak 2 ,Nilgün Aksungur 1 ,Ali Alkan 1

1 Central Fisheries Research Instıtute, Pbox. 129, Trabzon, Turkey
2 Directory of Food, Animal and Agriculture, Fisheries Department, Bursa, Turkey
DOI : 10.4194/1303-2712-v11_4_17 Viewed : 3994 - Downloaded : 4888 This study was done on the main streams and coastal zone where Black Sea Trout is mainly distributed. Although fario ecotype has reproductive and alimental migration in streams, the marine ecotype migrates between freshwater and marine in certain seasons. According to the data obtained, the smolt individuals of the marine ecotype living in streams since spawn have smoltification in stream mouths in spring (March- May) and go to the sea first in their lives. Some fish have smoltification in autumn. Black Sea Trout spawner individuals pass to freshwater at a period between April and June and have egg maturation there by autumn. Their return to the sea following spawning is between November and December. The findings obtained indicate that Black Sea Trout population has been depleted due to overfishing and disruption of their habitats. As a result, a new management strategy and protection programmes are vital for the recovery of the stocks. Keywords : Black Sea trout, Salmo trutta labrax, Eastern Black Sea Region, migration characteristics (structure), ecotype