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Osmoregulatory adaptations of freshwater air-breathing snakehead fish (Channa striata) after exposure to brackish water
Nakkrasae L.-I. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Osmoregulatory adaptations of freshwater air-breathing snakehead fish (Channa striata) after exposure to brackish water
ผู้แต่ง / หัวหน้าโครงการ (EN): Nakkrasae L.-I.
บทคัดย่อ (EN): NaCl-rich rock salt dissolved in natural water source leads to salinity fluctuation that profoundly affects freshwater ecosystem and aquatic fauna. The snakehead (Channa striata) can live in saline water, but the osmoregulatory mechanisms underlying this ability remain unclear. Herein, we found that exposure to salinities ≥10 ‰ NaCl markedly elevated plasma cortisol and glucose levels, and caused muscle dehydration. In a study of time-dependent response after being transferred from fresh water (0 ‰ NaCl, FW) to salt-dissolved brackish water (10 ‰ NaCl, SW), FW–SW, cortisol increased rapidly along with elevations of plasma glucose and lactate. Interestingly, plasma cortisol returned to baseline after prolonged exposure, followed by a second peak that probably enhanced the branchial Na+/K+-ATPase activity. Under SW–FW condition, Na+/K+-ATPase activity was not altered as compared to SW-adapted fish. In conclusion, salinity change, especially FW–SW, induced a stress response and hence cortisol release in C. striata, which might increase plasma glucose and lactate to energize the branchial Na+/K+-ATPase. © 2015, Springer-Verlag Berlin Heidelberg.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931008726&doi=10.1007%2fs00360-015-0902-z&partnerID=40&md5=0779e4ddbe8f593f5a17a38c3c4ab4a2
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Time Factors
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Osmoregulatory adaptations of freshwater air-breathing snakehead fish (Channa striata) after exposure to brackish water
Nakkrasae L.-I.
มหาวิทยาลัยมหิดล
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