THE EFFECT OF DIFFERENT SALINITIES ON THE GILL MORPHOLOGY AND RELATED GENE EXPRESSION OF LARVAL SCYLLA PARAMAMOSAIN ESTAMPADOR, 1950 (BRACHYURA, PORTUNIDAE)
文献类型： 外文期刊
作者： Yin, Chunyan 1 ; Shi, Fangfang 1 ; Liu, Zhiqiang 1 ; Zhao, Ming 1 ; Ma, Chunyan 1 ; Ma, Lingbo 1 ; Wang, Wei 1 ; Zhang, Fengying 1 ;
作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab East China Fishery Resources Exploitat, Minist Agr & Rural Affairs, Shanghai 200090, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
关键词： Salinity; gene expression; Na plus -K plus -Cl--cotransporter (NKCC); carbonic anhydrase (CA)
期刊名称：CRUSTACEANA （ 影响因子：0.7； 五年影响因子：0.6 ）
ISSN： 0011-216X
年卷期： 2025 年 98 卷 5-6 期
页码：
收录情况： SCI
摘要： In the present study, histopathological changes in the gills and the expression of genes related to osmotic pressure regulation in larval mud crab, Scylla paramamosain, were examined under different conditions of salinity stress. Notable alterations in gill tissue were observed in low salinity environments (5 ppt) compared to normal salinity (20 ppt). The gill filaments from the low salinity stress groups became shorter and thicker over time, resulting in severe morphological damage. Quantitative real time PCR (qRT-PCR) analysis indicated a reduction in NKCC (Na+-K+-Cl-- cotransporter) expression under both low and high salinity conditions. NKCC expression gradually decreased over time in low salinity conditions. However, expression was only slightly elevated at 2 hours in high salinity conditions. These findings suggest that the NKCC transport function is inhibited to prevent salinity-induced damage. Conversely, CA gene expression levels increased after 2 hours across all salinity conditions and the highest levels were observed in the 5 ppt group. Regardless of salinity levels, CA showed a positive response to salinity changes, which supported the maintenance of normal physiological functions. This experiment would be helpful for understanding the impact of salinity stress on osmotic pressure and ion regulation under different salinity conditions in S. paramamosain.
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