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Study of growth characteristics of Alburnoides cf. tabarestaensis in Golman Darreh River Dasht (Khorasan Shomali Province)
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Amin Danaei1   , Rahman Patimar * 1, Arsalan Bahalkeh1 |
| 1- Gonbad university |
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Abstract: (289 Views) |
| To study the growth characteristics of Alburnoides cf. tabarestaensis with 234 fish sampled in obtained in April 2018 to August 2018 with electroshocker. Sex ratio of male to female was 1:0.93 that showed there was no significant difference between sex ratio of male to female in population (X2=1.709, p<0.05). Maximum total length and weight were 78 mm and 5.60 g for females, 68 mm and 4.32 g for males, repectively. The weight - length relation of female was W=0.0088 TL3.25 and the weight - length relation of male was W=0.0064 TL3.46 and the total relation was W=0.0079 TL3.33. The results showedpositive allometric growth for this species (t-test, t male=5.08, t female=2.99, t population= 5.03, p<0.05). The condition factor analysis showed that the lowest quantity for both sexes was obtained in May (0.69 and 0.76, respectively) and the highest was obtained for male and female in June (2.55 and 1.36, respectively). The highest instantaneous growth rate was observed for both males and females at zero to one year old (0.86 and 0.73, respectively). Growth rate (K) in males (0.23) was higher than females (0.12). Zero age index (t0) was negative for all groups (males, females and population) and was obtained for males -2.94 and for males -3.51. Growth parameters were estimated as L∞=82.08 mm for males, L∞=119.42 mm for females and L∞=93.38 mm for population. Von bertalanffy growth equation was estimated as Lt=119.42(1-e-0.12(t+3.51)) and Lt=82.08(1-e-0/23(t+2.94)) for female and male fish, respectively. |
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| Keywords: Alburnoides cf. tabarestaensis, Length-weight relationship, Golman Darreh River, Khorasan Shomali Province |
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Full-Text [PDF 830 kb]
(417 Downloads)
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Type of Study: Research |
Subject:
بيولوژي آبزيان
Received: 2020/03/27 | Accepted: 2020/07/31 | Published: 2023/04/15
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