2021年9月30日 · Salmon and other fish swim upstream because it is part of their reproductive life cycle. Salmon are born in freshwater rivers, spend most of their lives in the ocean and then return to the place they were born to lay their own eggs. Fish that migrate between fresh and salt water are anadromous.

2022年9月29日 · Osmoregulation is the way salmon control bodily fluids as they move between freshwater and saltwater. The process begins during the smolt phase, when juvenile salmon prepare themselves to swim out to sea. The first thing that happens is a smolt begins taking in a lot of water. Next, its kidneys stop producing as much urine.

Examples of these fast swimming fish include tuna, salmonids, and black basses (Micropterus sp.). Fishes that are compressed laterally, such as the sunfishes (Lepomis sp.), have well developed maneuverability and are capable of quick bursts and turns. Some of the slowest fishes have rounded bodies and use oscraciform swimming.

2023年9月15日 · Here we exposed Chinook salmon (initial weight: 82.9 ± 0.30 g) to low (0.3 bl s −1) and moderate (0.8 bl s −1) flow regimes for ten to eleven months and quantified respiratory and swimming performance in individuals with and without mild scoliosis.

2024年5月29日 · Using post-smolt farmed Atlantic salmon, one of the main marine farmed fish species, we investigated the relationship between oxygen consumption, locomotory behaviour, and ODBA when swimming at increasing speeds in a swim-tunnel, comparing unsteady with steady flow conditions.

We synthesized literature on adult salmon swim performance (Oncorhynchus spp. and Salmo salar) to unfold what is known about how biological (sex and body size) and physical (temperature) factors affect swimming in adult salmon.

2014年5月15日 · Positioning of sea cages at sites with high water current velocities expose the fish to a largely unknown environmental challenge. In this study we observed the swimming behaviour of Atlantic salmon (Salmo salar L.) at a commercial farm with tidal currents altering between low, moderate and high velocities.

In this study, the role of swimming performance and oxygen consumption parameters as non-lethal predictors of production parameters such as growth, feed intake, intestinal fat and filet yield, was assessed, using Atlantic salmon Salmo salar and Gilthead seabream Sparus aurata as example species.

2023年12月1日 · One hypothesis posits that a cardiac oxygen insufficiency impairs the heart’s capacity to pump sufficient oxygen to body tissues to sustain up-river swimming, especially in warm water when oxygen...

Wild salmon (Salmo salar) parr and smolt were forced to swim against constant flow (50 cm.s−1) for 8 hours. Physiological properties describing the hormonal status, the energy metabolism and the ionic and osmotic balance of fish were measured from the …