Some of the growth characteristics of Barbatula sp. in Dimeh area of the Zayandehroud River

سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 238

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شناسه ملی سند علمی:

ICII02_094

تاریخ نمایه سازی: 7 تیر 1399

چکیده مقاله:

In this study age and growth of Batbatula sp. in the Dimeh area as one of origin ofthe Zayandehroud River, were examined. Sampling was performed monthly during2013-2014 for twelve months and a total number of 440 specimens were collected.Sex ratio was 1:1.43 (male: female). The age of fish were determined 0+ to 5 + forfemale and 0+ to 4 + for male. The maximum total length and weight were recordedfor females 74.66 (mm) and 2.04 (g) and for male 64.78 (mm) and 1.65 (g),respectively. Bertalaneffy parameters based age- size were estimated in female(K=0.211 in a year, L ∞ =111.01 mm and t R°R= -1.62year) and male (K=.0249 a year,L∞ =88.01 mm and t R°R=-1.46 year). The relationship between length and weight wasexpressed in male as W=0.00002 L 2.766 (r2 =0.849) and in female as W=0.00002L 2.574(r2 =0.812). Based on b values, both sexes showed a negative algometric growth.

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نویسندگان

Mahsa Borhani

Esfahan university of Technology, Faculty of Natural Resource, Department of Fisheries, Esfahan

Nasrolah Mahbobi Soofiani

Esfahan university of Technology, Faculty of Natural Resource, Department of Fisheries, Esfahan