Using taxonomy to strengthen aquaculture for climate change, ocean acidification and invasive species

New Zealand Journal of Marine and Freshwater Research, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 16

Published: Feb. 24, 2025

Language: Английский

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Economic feasibility of low-trophic aquaculture within U.S. Offshore wind energy areas

Aquaculture Economics & Management, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 31

Published: March 3, 2025

Language: Английский

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Atlantic salmon (Salmo salar) under challenge: Heart rate and acceleration dynamics during exercise and stress

Frontiers in Physiology, Journal Year: 2025, Volume and Issue: 16

Published: April 7, 2025

This study investigated the heart rate (HR) and acceleration (AC) dynamics of Atlantic salmon (Salmo salar) during a swim fitness test in tunnel. Experimental fish were implanted with data loggers equipped HR AC sensors. These fish, controls that not implanted, subjected to swim-fitness at incremental speeds from 0.2 1.0 m.s-1. Oxygen consumption (MO2) locomotory behavior monitored. Subsequently, these stress challenge further link between induced AC. When swimming m.s-1, (N = 19) was high tunnels but remained stable 82 84 beats per minute (bpm), despite significant increases MO2, AC, tail beat frequency (TBF), head width (HWF). The observed also reflected by explaining only ∼15% variation MO2. MO2 increased 238 343 mg.kg-1.h-1 when 0.4 With increasing speeds, values 16 27 milli-g explained ∼40% TBF linearly speed, m.s-1 onward, it correlated strongly similarly for HWF. Under controlled conditions, significantly higher than baseline conditions similar regardless intensity. Also, showed peak patterns as HR. From results, we conclude oxygen demand is met alone salmon. supports hypothesis stroke volume plays an important role boosting cardiac output. contrast HR, strong positive correlation tests may serve reliable predictor energy expenditure. HWF be useful predictors, did show responses but, swimming, up maximum under 90 bpm.

Language: Английский

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Precision farming in aquaculture: non-invasive monitoring of Atlantic salmon (Salmo salar) behaviour in response to environmental conditions in commercial sea cages for health and welfare assessment

Frontiers in Robotics and AI, Journal Year: 2025, Volume and Issue: 12

Published: April 23, 2025

Studies show that Atlantic salmon in captivity adjust their distribution sea cages based on environmental gradients like temperature, waves, and photoperiod. This study used a computer vision algorithm at three marine farms to analyse fish group swimming behaviour termed “activity” (measured percent), which includes abundance, speed, shoal cohesion. The activity metric inferred the depth of main was analysed with respect conditions explore potential behavioural drivers assess changes response stressor, storm event. During winter conditions, Farms A B showed distinct thermal stratification, demonstrating preference for warmer lower water column (39.6 ± 15.3% 27.5 10.2%) over upper (16.3 5.7% 18 3.3%; p < 0.001). At Farm C, thermally homogenous water, similarly distributed between (18.2 6.9%) (17.7 7.6%) column. Severe weather increased wave heights, influencing horizontal differently C. B, deeper site, remained avoided surface while shallower cages, they moved toward side cage nearest centre farm, presumably less exposed due nearby cages. Understanding responses can inform management practices, using cameras associated algorithms offers powerful, non-invasive tool continuously monitoring safeguarding health welfare.

Language: Английский

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From soil to sea: An ecological modelling framework for sustainable aquaculture

Aquaculture, Journal Year: 2023, Volume and Issue: 577, P. 739920 - 739920

Published: July 24, 2023

Language: Английский

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