MarineBio Conservation SocietyFisheries News   :: ScienceDaily

Newly-hatched salmon use geomagnetic field to learn which way is up

Fri, 16 Feb 2018 11:05:35 EST ~ Researchers who confirmed in recent years that salmon use the Earth's geomagnetic field to guide their long-distance migrations have found that the fish also use the field for a much simpler and smaller-scale migration: When the young emerge from gravel nests to reach surface waters. Find out more...

High levels of microplastics found in Northwest Atlantic fish

Fri, 16 Feb 2018 11:05:13 EST ~ A new study finds 73 percent of mesopelagic fish caught in the Northwest Atlantic had microplastics in their stomachs -- one of the highest levels globally. Typically living at depths of 200-1,000 meters, these fish could spread microplastic pollution throughout the marine ecosystem, by carrying microplastics from the surface down to deeper waters. They are also prey for fish eaten by humans, meaning that microplastics could indirectly contaminate our food supply. Find out more...

Hurricanes Irma and Maria temporarily altered choruses of land and sea animals

Thu, 15 Feb 2018 12:50:16 EST ~ Audio recordings of Hurricanes Irma and Maria's passage over Puerto Rico document how the calls of coastal critters changed in response to the deadly storms. The hurricanes caused a major disruption in the acoustic activity of snapping shrimp, a reduction in insect and bird sounds, and potentially an intensification of fish choruses, according to new research. Find out more...

Deep-sea fish use hydrothermal vents to incubate eggs

Mon, 12 Feb 2018 12:12:26 EST ~ An international team of researchers have discovered egg cases of deep-sea fish near hydrothermal vents. The team believes that deep-sea skates, a relative of sharks and rays, use the warm water near the vents to accelerate the typically years-long incubation time of their eggs. Find out more...

Salmon face double whammy from toxic stormwater

Mon, 12 Feb 2018 08:44:56 EST ~ Researchers have determined that coho salmon that survive polluted stormwater are still at risk. Experiments on both larval zebrafish, a model for salmon, and actual coho salmon showed that toxic runoff can damage hair-like sensors the fish use to find food, sense predators, and find their way in the current. Find out more...

Simple rules can help fishery managers cope with ecological complexity

Thu, 08 Feb 2018 18:03:44 EST ~ A team of ecologists and economists are the first to test whether real-life ecological interactions produce economic benefits for the fishing industry. Find out more...

Socioecological network finds space for cattle, fish, and people in the big mountain west

Thu, 08 Feb 2018 18:03:41 EST ~ The social and ecological systems of mountains and their river basins are best approached holistically when dealing with complex problems in natural resources management, say ecologists working with the Mountain Social Ecological Observatory Network (MntSEON). Find out more...

A view from above and below: Hatchery chinook salmon are self-sorting in tanks

Thu, 08 Feb 2018 16:20:49 EST ~ Hatchery-raised chinook salmon sort themselves into surface- and bottom-oriented groups in their rearing tanks, and this behavior might be due in part to the fish's genes. Find out more...

Walking fish suggests locomotion control evolved much earlier than thought

Thu, 08 Feb 2018 12:09:12 EST ~ Cartoons that illustrate evolution depict early vertebrates generating primordial limbs as they move onto land for the first time. But new findings indicate that some of these first ambulatory creatures may have stayed under water, spawning descendants that today exhibit walking behavior on the ocean floor. Find out more...

Shoals of sticklebacks differ in their collective personalities

Wed, 07 Feb 2018 09:01:32 EST ~ Research has revealed that, among schooling fish, groups can have different collective personalities, with some shoals sticking closer together, being better coordinated, and showing clearer leadership than others. Find out more...