Some biological aspect of thinspine seacatfish (plicofollis tenuispinis) in northwest of persian gulf (Khuzestan coastal waters, Iran)
محل انتشار: مجله علمی علوم بیولوژیکی، دوره: 2، شماره: 8
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 431
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شناسه ملی سند علمی:
JR_SJBS-2-8_002
تاریخ نمایه سازی: 16 آذر 1394
چکیده مقاله:
During this study from December 2009 to November 2011, 403 Thinspine seacatfish fish were caught and their weight and length were measured. Total number of caught fishes included, 33 males, 77 females and 293 immature fishes. The Mean, maximum and minimum total lengths were 236±82, 470 mm and 121 mm respectively. The Mean, maximum and minimum total weight for this species was 184±150gr, 1385 gr and 14gr respectively. The length-weight relationship were calculated as W=0.000006FL3.07 (n=77, R2= 0.98) for females, W=0.000004FL3.15 (n=33, R2=0.98) for males and W=0.000007FL3.08 (n=403, R2 =0.98) for total fishes verifying calculated b with 3, using Students t-test there was significant difference between calculated b and 3 (P<0.05), growth pattern is allometric. The mean Values of condition factor (K) and Hepatosomatic Index (HIS) was 0/95± 0/09, 1/54± 0/2 in for total specimens. The highest value of K and HIS were observed in May, August and the lowest in December, June were observed. The mean value of Gonado somatic Index (GSI) for the total specimens were 0/89 ± 0/7. For both sexes, the highest GSI value were observed in April and the lowest GSI value in May were observed. Mean GSIvalue indicated that spawning time were occurred during April. Themean size at first sexual maturity (Lm) was 358mm for total fishes.
کلیدواژه ها:
نویسندگان
S.A Hashemi
Department of Fishery, Faculty of Fisheries and Environment, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
S.A Taghavimotlagh
Fisheries Research Organization, Tehran, Iran.
A Hedayati
Department of Fishery, Faculty of Fisheries and Environment, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
R Ghorbani
Department of Fishery, Faculty of Fisheries and Environment, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran.