Over 80,000 years ago, Neanderthals fed themselves on mussels, fish and other marine life. The first evidence has been found by an international team including Göttingen University in the cave of Figueira Brava in Portugal. The excavated layers date from 86,000 to 106,000 years ago, the period when Neanderthals settled in Europe. Sourcing food from the sea at that time had only been attributed to anatomically modern humans in Africa. Results were published in Science.
A slender little fish called the sand lance plays a big role as 'a quintessential forage fish' for puffins, terns and other seabirds, humpback whales and other marine mammals, and even bigger fish such as Atlantic sturgeon, cod and bluefin tuna in the Gulf of Maine and northwest Atlantic Ocean. But scientists say right now they know far too little about its biology and populations to inform 'relevant management, climate adaptation and conservation efforts.'
If artificial light shines into the Arctic Ocean during the polar night, does it matter? A new paper in Communications Biology says the answer to this is a strong yes.
A new study led by the University of Washington finds dramatic increases in the abundance of a worm that can be transmitted to humans who eat raw or undercooked seafood. Its 283-fold increase in abundance since the 1970s could have implications for the health of humans and marine mammals, which both can inadvertently eat the worm.
Flexible temporary electronic displays may one day make it possible to sport a glowing tattoo or check a reading, like that of a stopwatch, directly on the skin. In its current form, however, this technology generally depends on plastic. New research in ACS Nano describes a way to make these displays, which would likely be discarded after a single use, more environmentally friendly using a plentiful and biodegradable resource: fish scales.
Chronic exposure to microplastic fibers causes aneurysms, erosion of surface layers and other serious damage to fish gills, and increases egg production in female fish, a sign that chemicals in the fibers may be acting as endocrine disruptors, a new study by researchers at Duke University and China's Zhejiang University of Technology finds.
Measures against overfishing tend to protect young, immature fish through measures such as minimum-landing sizes. However, a team of researchers led by Prof. Robert Arlinghaus from the Leibniz-IGB and the Humboldt-Universität zu Berlin recommends also keeping the particularly large megaspawners alive in addition to the youngsters. This type of management achieves good compromises between the demands of commercial and recreational fisheries and the desire to conserve the reproductive capacity of fish populations.
A new study in aquaculture by researchers at Ben-Gurion University of the Negev has determined that organic micropollutants (OMPs) in the water - trace elements of heavy metals, pharmaceuticals and personal care products as well as pesticides, solvents, and detergents - result in minimal accumulation in fish. Additionally, the wastewater does not appear to affect other commercially important traits of fish.
An HKU research team confirmed the occurrence of biomagnification of toxic substance TPT compounds along the marine food chain resulted in very high concentrations of TPT in two top predators, the Chinese white dolphin and the finless porpoises. This is the first study in the world to confirm the trophic magnification of TPT in food webs of cetacean species, and the findings were published in Environment International.
This paper suggests using museum specimens to estimate the length-weight relationships of fish that are hard to find alive in their natural environment.