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Effects of ocean acidification on salinity tolerance and seawater growth of Atlantic salmon Salmo salar smolts.
J Fish Biol 2018; 93(3):560-566JF

Abstract

Human activity has resulted in increasing atmospheric carbon dioxide (CO2 ), which will result in reduced pH and higher levels of CO2 in the ocean, a process known as ocean acidification. Understanding the effects of ocean acidification (OA) on fishes will be important to predicting and mitigating its consequences. Anadromous species such as salmonids may be especially at risk because of their rapid movements between fresh water and seawater, which could minimize their ability to acclimate. In the present study, we examine the effect of future OA on the salinity tolerance and early seawater growth of Atlantic salmon Salmo salar smolts. Exposure to 610 and 1010 μatm CO2 did not alter salinity tolerance but did result in slightly lower plasma chloride levels in smolts exposed to seawater compared with controls (390 μatm). Gill Na+ -K+ -ATPase activity, plasma cortisol, glucose and haematocrit after seawater exposure were not altered by elevated CO2 . Growth rate in the first 2 weeks of seawater exposure was greater at 1010 μatm CO2 than under control conditions. This study of the effects of OA on S. salar during the transition from fresh water to seawater indicates that elevated CO2 is not likely to affect osmoregulation negatively and may improve early growth in seawater.

Authors+Show Affiliations

U.S. Geological Survey, Leetown Science Center, S.O. Conte Anadromous Fish Research Laboratory, Turners Falls, Massachusetts.U.S. Geological Survey, Leetown Science Center, S.O. Conte Anadromous Fish Research Laboratory, Turners Falls, Massachusetts.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29934974

Citation

McCormick, Stephen D., and Amy M. Regish. "Effects of Ocean Acidification On Salinity Tolerance and Seawater Growth of Atlantic Salmon Salmo Salar Smolts." Journal of Fish Biology, vol. 93, no. 3, 2018, pp. 560-566.
McCormick SD, Regish AM. Effects of ocean acidification on salinity tolerance and seawater growth of Atlantic salmon Salmo salar smolts. J Fish Biol. 2018;93(3):560-566.
McCormick, S. D., & Regish, A. M. (2018). Effects of ocean acidification on salinity tolerance and seawater growth of Atlantic salmon Salmo salar smolts. Journal of Fish Biology, 93(3), pp. 560-566. doi:10.1111/jfb.13656.
McCormick SD, Regish AM. Effects of Ocean Acidification On Salinity Tolerance and Seawater Growth of Atlantic Salmon Salmo Salar Smolts. J Fish Biol. 2018;93(3):560-566. PubMed PMID: 29934974.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of ocean acidification on salinity tolerance and seawater growth of Atlantic salmon Salmo salar smolts. AU - McCormick,Stephen D, AU - Regish,Amy M, PY - 2017/11/13/received PY - 2018/05/18/accepted PY - 2018/6/24/pubmed PY - 2018/12/12/medline PY - 2018/6/24/entrez KW - Salmo salar KW - carbon dioxide KW - gill Na+-K+-ATPase KW - osmoregulation KW - pH KW - salinity SP - 560 EP - 566 JF - Journal of fish biology JO - J. Fish Biol. VL - 93 IS - 3 N2 - Human activity has resulted in increasing atmospheric carbon dioxide (CO2 ), which will result in reduced pH and higher levels of CO2 in the ocean, a process known as ocean acidification. Understanding the effects of ocean acidification (OA) on fishes will be important to predicting and mitigating its consequences. Anadromous species such as salmonids may be especially at risk because of their rapid movements between fresh water and seawater, which could minimize their ability to acclimate. In the present study, we examine the effect of future OA on the salinity tolerance and early seawater growth of Atlantic salmon Salmo salar smolts. Exposure to 610 and 1010 μatm CO2 did not alter salinity tolerance but did result in slightly lower plasma chloride levels in smolts exposed to seawater compared with controls (390 μatm). Gill Na+ -K+ -ATPase activity, plasma cortisol, glucose and haematocrit after seawater exposure were not altered by elevated CO2 . Growth rate in the first 2 weeks of seawater exposure was greater at 1010 μatm CO2 than under control conditions. This study of the effects of OA on S. salar during the transition from fresh water to seawater indicates that elevated CO2 is not likely to affect osmoregulation negatively and may improve early growth in seawater. SN - 1095-8649 UR - https://www.unboundmedicine.com/medline/citation/29934974/Effects_of_ocean_acidification_on_salinity_tolerance_and_seawater_growth_of_Atlantic_salmon_Salmo_salar_smolts_ L2 - https://doi.org/10.1111/jfb.13656 DB - PRIME DP - Unbound Medicine ER -