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:: Volume 21, Issue 5 (2022) ::
IJFS 2022, 21 Back to browse issues page
Research Article: Life stages and seasonal variances of salinity tolerance of Triplophysa yarkandensis (Day,1877) in Tarim River
W. Zhichao , W. Xiaolei , W. Junyuan * , K. Benno , R. Daoquan , Y. Cuifang
Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Key Laboratory of Animal Husbandry Science and Technology of Xinjiang Production & Construction Corps,College of Life Science, Tarim University, Alar,843300, China , 67785053@qq.com
Abstract:   (953 Views)

In order to explore the influence of increased salinization on fish populations in Tarim River, sodium chloride (NaCl) salinity tolerance in T. yarkandensis (a native fish species), was measured in laboratory by applying slow acclimation (SA, gradual salinity increase) and direct transfer (DT) methods in spring season. Whereas Probit method was used to calculate the median lethal concentration (LC50). Results of slow acclimation for adult, juvenile and larva fish (LC50) showed 16.51 g/L, 12.94 g/L and 8.13 g/L[cy1] , respectively. Results of salinity tolerance (LC50) by DT method, were recorded as 16.16 g/L, 11.01 g/L, and 7.37 g/L for adult, juvenile and larva, respectively. The salinity tolerance of the fish showed age-dependent increasing tendency. The experiments have also been conducted in three other seasons to study the relationship between salinity tolerance of adults and seasonal salinity variances in Tarim River. Results showed a significant S relationship between river’s salinity and the LC50 of adults (data mixed the SA and DT) by using equations y=e2.788-0.121/X (R2=0.994, P=0.003) for DT, and y=e2.771-0.120/X (R2=0.927,P=0.037) for SA. These findings suggest that T. yarkandensis has a physiological adaptation for osmoregulation in developmental processes and in dealing with the seasonal salinity variances of the Tarim River.


Keywords: Triplophysa Yarkandensis, Salinity tolerance, Tarim River, Age, Seasonal variances
Full-Text [PDF 353 kb]   (443 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
Received: 2015/11/29 | Accepted: 2018/12/2 | Published: 2022/12/18
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Zhichao W, Xiaolei W, Junyuan W, Benno K, Daoquan R, Cuifang Y. Research Article: Life stages and seasonal variances of salinity tolerance of Triplophysa yarkandensis (Day,1877) in Tarim River. IJFS 2022; 21 (5) :1156-1165
URL: http://jifro.ir/article-1-2047-en.html


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Volume 21, Issue 5 (2022) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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