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Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures.
J Fish Biol 2014; 85(4):1163-76JF

Abstract

In order to investigate how changes in gill Na(+) , K(+) -ATPase (NKA) α1a and α1b subunits, Na(+) , K(+) , 2Cl(-) co-transporter (NKCC1) and the apical cystic fibrosis trans-membrane conductance regulator-I (CFTR-I) transcripts in wild strain of Atlantic salmon, Salmo salar, smolts are affected by temperature during spring, hatchery-reared parr (mean ± s.e. fork length = 14·1 ± 0·5; mean ± s.e. body mass = 28·5 ± 4·5 g) originating from broodstock from the Vosso river (western Norway) were acclimated to three temperature regimes (4·1, 8·1 and 12·9° C) in May and reared under gradually increasing salinity between May and June. Changes in plasma Na(+) , haematocrit (Hct) and PCO2 were monitored in order to assess and compare key physiological changes with the transcriptional changes in key ion transporters. The temperatures reflect the natural temperature range in the River Vosso during late spring. Overall, higher gill NKA α1b mRNA levels, gill NKCC1a levels and CFTR-I levels were observed in the 4·1° C group compared to the 11·9° C group. This coincided with a 2-3 week period with decreased Hct and PCO2 and may indicate a critical window when smolts suffer from reduced physical performance during migration. Further research is needed to confirm the potential interaction between ecological and physiological conditions on mortality of hatchery-reared smolts from River Vosso during their natural migration.

Authors+Show Affiliations

Uni Research AS, 5020 Bergen, Norway; Bergen University College, 5020 Bergen Norway.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25098608

Citation

Handeland, S O., et al. "Osmoregulation in Atlantic Salmon Salmo Salar Smolts Transferred to Seawater at Different Temperatures." Journal of Fish Biology, vol. 85, no. 4, 2014, pp. 1163-76.
Handeland SO, Imsland AK, Nilsen TO, et al. Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures. J Fish Biol. 2014;85(4):1163-76.
Handeland, S. O., Imsland, A. K., Nilsen, T. O., Ebbesson, L. O., Hosfeld, C. D., Pedrosa, C., ... Stefansson, S. O. (2014). Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures. Journal of Fish Biology, 85(4), pp. 1163-76. doi:10.1111/jfb.12481.
Handeland SO, et al. Osmoregulation in Atlantic Salmon Salmo Salar Smolts Transferred to Seawater at Different Temperatures. J Fish Biol. 2014;85(4):1163-76. PubMed PMID: 25098608.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures. AU - Handeland,S O, AU - Imsland,A K, AU - Nilsen,T O, AU - Ebbesson,L O E, AU - Hosfeld,C D, AU - Pedrosa,C, AU - Toften,H, AU - Stefansson,S O, Y1 - 2014/08/07/ PY - 2013/10/29/received PY - 2014/06/23/accepted PY - 2014/8/8/entrez PY - 2014/8/8/pubmed PY - 2014/11/13/medline KW - environmental manipulation KW - smoltification sea migration KW - wild strain SP - 1163 EP - 76 JF - Journal of fish biology JO - J. Fish Biol. VL - 85 IS - 4 N2 - In order to investigate how changes in gill Na(+) , K(+) -ATPase (NKA) α1a and α1b subunits, Na(+) , K(+) , 2Cl(-) co-transporter (NKCC1) and the apical cystic fibrosis trans-membrane conductance regulator-I (CFTR-I) transcripts in wild strain of Atlantic salmon, Salmo salar, smolts are affected by temperature during spring, hatchery-reared parr (mean ± s.e. fork length = 14·1 ± 0·5; mean ± s.e. body mass = 28·5 ± 4·5 g) originating from broodstock from the Vosso river (western Norway) were acclimated to three temperature regimes (4·1, 8·1 and 12·9° C) in May and reared under gradually increasing salinity between May and June. Changes in plasma Na(+) , haematocrit (Hct) and PCO2 were monitored in order to assess and compare key physiological changes with the transcriptional changes in key ion transporters. The temperatures reflect the natural temperature range in the River Vosso during late spring. Overall, higher gill NKA α1b mRNA levels, gill NKCC1a levels and CFTR-I levels were observed in the 4·1° C group compared to the 11·9° C group. This coincided with a 2-3 week period with decreased Hct and PCO2 and may indicate a critical window when smolts suffer from reduced physical performance during migration. Further research is needed to confirm the potential interaction between ecological and physiological conditions on mortality of hatchery-reared smolts from River Vosso during their natural migration. SN - 1095-8649 UR - https://www.unboundmedicine.com/medline/citation/25098608/Osmoregulation_in_Atlantic_salmon_Salmo_salar_smolts_transferred_to_seawater_at_different_temperatures_ L2 - https://doi.org/10.1111/jfb.12481 DB - PRIME DP - Unbound Medicine ER -