Acute responses of spotted snakehead (Channa punctata) to salinity stress: A study of a freshwater fish to salinity challenges during intrusion of saline water

IF 0.8 4区农林科学 Q3 FISHERIES

Iranian Journal of Fisheries Sciences Pub Date : 2020-09-10 DOI:10.22092/IJFS.2020.122590

H. Khatun, G. Mostakim, S. Islam

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引用次数: 2

Abstract

A climate driven changes in the coastal region of Bangladesh is saltwater intrusion in freshwater, which may directly affect the fishery production as well as economy and food security. Investigation on effect of different concentration of salinities (0, 5, 10, and 15ppt) on hemato-biochemical parameters, behavioral responses and gill morphology at certain time intervals (1, 6, 12, 24, 36, 48, and 72 h) were observed in a spotted snakehead, Channa punctata. In the present study the biochemical parameter and glucose exposed a significant (p <0.05) changes associated with different exposures at different time intervals. The hematological data of C. punctata revealed significant (p <0.05) decrease in red blood cell (RBC) count. The hemoglobin level in every treatment was lower till 24 h and then it increased up to 48 h but white blood cell (WBC) count, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) showed significant (p <0.05) increase compared to the control. Increase and decrease of hematological indices expressed that fish exposure to different salinities were under stress. Unusual behavioral responses with various pathological signs in gills were also perceived. The results specified that the intrusion of saline water into the freshwater have deleterious effects on the hemato-biochemical parameters including gill morphology and behavior. So, the intrusion of saline water should be controlled to avert the losses.

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斑点蛇头(Channa punctata)对盐度胁迫的急性反应:咸水入侵期间淡水鱼对盐度挑战的研究

孟加拉国沿海地区由气候驱动的变化是淡水中的盐水入侵，这可能直接影响渔业生产以及经济和粮食安全。研究了不同浓度盐度（0、5、10和15ppt）在一定时间间隔（1、6、12、24、36、48和72小时）对斑头鱼（Channa punctata）血液生化参数、行为反应和鳃形态的影响。在本研究中，生物化学参数和葡萄糖暴露在不同时间间隔的不同暴露中发生了显著（p<0.05）变化。点状C.punctata的血液学数据显示红细胞（RBC）计数显著下降（p<0.05）。每次治疗的血红蛋白水平在24小时前都较低，然后上升到48小时，但与对照组相比，白细胞（WBC）计数、平均红细胞体积（MCV）、平均红血球血红蛋白（MCH）和平均红细胞血红蛋白浓度（MCHC）显着增加（p<0.05）。血液学指标的升高和降低表明不同盐度的鱼类都处于应激状态。在鳃中也发现了具有各种病理体征的异常行为反应。结果表明，盐水入侵淡水对包括鳃形态和行为在内的血液生化参数有有害影响。因此，应控制盐水的入侵以避免损失。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iranian Journal of Fisheries Sciences FISHERIES-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

3 months

期刊介绍： 1- Living various species (contains animals and vegetal species) in various aquatic ecosystems. 2- Health and diseases of aquatic species. 3- Determining the stocks and specific time and location for catching and reliable exploitation for sustainable development. 4- Methods of propagation and culture of high value aquatic resources. 5- Aquatic stock assessment and the methods of restocking the high value species and suggestion for rate, areas and the time for releasing fish and other aquatic organisms fries. 6- Pollutant agents and their effects to the environments of aquatic species. 7- Feed and feeding in aquatic organisms. 8- Fish processing and producing new products. 9- The economic and social aspects of fisheries.