نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکدة شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران
2 مرکز تحقیقات آبزیان آبهای داخلی کشور، استان گلستان، ایران
3 کارشناس ارشد شیلات، دانشکدة منابع طبیعی، دانشگاه گیلان، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, the distribution, abundance and some growth parameters of Spirlin, Alburnoides
eichwaldii in the Tilabad stream in the Golestan province was studied over 2009-2010. A total
of 535 samples of Spirlins were collected by catching with Electroshocker. A total number of
205 samples was analyzed and the rest of the specimens were released. Spirlin was found only
in stations 1 and 2 (the Headstream and next station) while station 2 had the highest number
of summer Sprilin (0.889 # m-2). Catched fish were in three age-groups: 0, 1+, and 2+ years
old with the longitudinal range of 25.34-110.16 mm. The exponential relationship between
length and weight in both sexes indicated negative allometric growth. Growth equation was
Lt= 12.45(1-e-0.248(t+0.39)) and Lt= 11.66(1- e-0.281(t+0.39)) for females and males of
Spirlin, respectively. Apparently, Spirlinin in the Tialabad stream has no biotic suitability and
faces severe environmental stress.
کلیدواژهها [English]