نوع مقاله : مقاله کامل علمی - پژوهشی
نویسنده
عضو هیات علمی مرکز آموزش و تحقیقات کشاورزی گیلان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
Mullet fish as one of the family are non-native to the Caspian Sea. And one of the two species is adapted to the sea, narrow snout mullet (Liza saliens) is. This research study biological indicators Mullet fishing Mian kaleh in the city, has been in operation in 1395. 960 fish from different parts Mian kaleh drag seine Beach (Beach Seine) with a = 33 mm mesh size were caught and collected. To determine the different stages of maturity of 6 Gennady stage was used. The results indicate that the average length, weight and age increased during the months of fishing, although in recent years the trend has been reduced. Fish aged 2 to 6 years, had the highest rate of fishing, and often fish or immature or were in the early stages of maturation. Fish length range of 40-24 cm and a weight range of fish 250-200 g respectively. The age range of fish from 2 to 4 years of age composition 3-year-olds have had more than fishing. It seems that it is necessary to protect this precious species in the mesh size of fishing nets is fundamental revision.
کلیدواژهها [English]
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