Aquaculture potential of Atlantic wolffish (Anarhichas lupus): stress and physiological responses to acute handling DOI Creative Commons
Ida Hedén, Jonathan A. C. Roques,

Marica Andersson

et al.

Fish Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 51(1)

Published: Feb. 1, 2025

Abstract The Atlantic wolffish ( Anarhichas lupus ) is a cold-water species with the potential to diversify aquaculture in Northern countries. Few studies have investigated stress physiology of wolffish, and current knowledge on largely derived from closely related spotted minor ). In study, were exposed handling mimicking common husbandry conditions such as repeated air exposure net-chasing. Samples taken prior (pre-stress; control) well 5- 24-h post-stress. A series primary secondary acute response parameters assessed: plasma cortisol, glucose lactate levels, hematological indices (hemoglobin, Hb; hematocrit, Hct; mean corpuscular hemoglobin concentration, MCHC), osmoregulatory capacity through osmolality gill Na + /K ATPase (NKA) activity. Other responses implications for fish health welfare are intestinal integrity transport functions. These assessed using Ussing chamber technique. cortisol peak values low comparison other studied after occurred late 24 h post-stress, suggesting that slow responder. Plasma remained stable, whereas concentrations significantly decreased between 5 stress. There was no effect pH, Hb, or Hct, although significant increase MCHC found h, originating small Hb. This result suggests Hb synthesis exposure. functions NKA-activity unchanged conclusion, appears exhibit relatively moderate response, characterized by minimal effects following husbandry-related findings contribute understanding species’ development candidate marine, aquaculture.

Language: Английский

Aquaculture potential of Atlantic wolffish (Anarhichas lupus): stress and physiological responses to acute handling DOI Creative Commons
Ida Hedén, Jonathan A. C. Roques,

Marica Andersson

et al.

Fish Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 51(1)

Published: Feb. 1, 2025

Abstract The Atlantic wolffish ( Anarhichas lupus ) is a cold-water species with the potential to diversify aquaculture in Northern countries. Few studies have investigated stress physiology of wolffish, and current knowledge on largely derived from closely related spotted minor ). In study, were exposed handling mimicking common husbandry conditions such as repeated air exposure net-chasing. Samples taken prior (pre-stress; control) well 5- 24-h post-stress. A series primary secondary acute response parameters assessed: plasma cortisol, glucose lactate levels, hematological indices (hemoglobin, Hb; hematocrit, Hct; mean corpuscular hemoglobin concentration, MCHC), osmoregulatory capacity through osmolality gill Na + /K ATPase (NKA) activity. Other responses implications for fish health welfare are intestinal integrity transport functions. These assessed using Ussing chamber technique. cortisol peak values low comparison other studied after occurred late 24 h post-stress, suggesting that slow responder. Plasma remained stable, whereas concentrations significantly decreased between 5 stress. There was no effect pH, Hb, or Hct, although significant increase MCHC found h, originating small Hb. This result suggests Hb synthesis exposure. functions NKA-activity unchanged conclusion, appears exhibit relatively moderate response, characterized by minimal effects following husbandry-related findings contribute understanding species’ development candidate marine, aquaculture.

Language: Английский

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