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Categories: Biology: Marine, Ecology: Sea Life

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Published

Coastal species persist on high seas on floating plastic debris      (via sciencedaily.com)     Original source 

The high seas have been colonized by a surprising number of coastal marine invertebrate species, which can now survive and reproduce in the open ocean, contributing strongly to the floating community composition. Researchers found coastal species, representing diverse taxonomic groups and life history traits, in the eastern North Pacific Subtropical Gyre on over 70 percent of the plastic debris they examined. Further, the debris carried more coastal species than open ocean species.

Biology: General Biology: Marine Biology: Zoology Ecology: Endangered Species Ecology: Sea Life Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Less ice, fewer calling seals      (via sciencedaily.com)     Original source 

For several years, a team of researchers used underwater microphones to listen for seals at the edge of the Antarctic. Their initial findings indicate that sea-ice retreat has had significant effects on the animals' behavior: when the ice disappears, areas normally full of vocalizations become very quiet.

Biology: Biochemistry Biology: General Biology: Marine Ecology: Extinction Ecology: Nature Ecology: Sea Life Paleontology: Fossils Paleontology: General
Published

Learning about what happens to ecology, evolution, and biodiversity in times of mass extinction      (via sciencedaily.com)     Original source 

Studying mass extinction events from the past can build our understanding of how ecosystems and the communities of organisms within them respond. Researchers are looking to the Late Devonian mass extinction which happened around 370 million years ago to better understand how communities of organisms respond in times of great upheaval.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: Developmental Biology: Evolutionary Biology: General Biology: Genetics Biology: Microbiology Ecology: Sea Life
Published

How skates learned to fly through water      (via sciencedaily.com)     Original source 

Genes are not the only drivers of evolution. The iconic fins of skates are caused by changes in the non-coding genome and its three-dimensional structure, an international research team reports.

Biology: Biochemistry Biology: Cell Biology Biology: General Chemistry: Biochemistry Chemistry: Inorganic Chemistry Ecology: Sea Life Engineering: Nanotechnology Physics: Optics
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Pollution monitoring through precise detection of gold nanoparticles in woodlice      (via sciencedaily.com)     Original source 

Researchers introduce a novel imaging method to detect gold nanoparticles in woodlice. Their method, known as four-wave mixing microscopy, flashes light that the gold nanoparticles absorb. The light flashes again and the subsequent scattering reveals the nanoparticles' locations. With information about the quantity, location, and impact of gold nanoparticles within the organism, scientists can better understand the potential harm other metals may have on nature.

Biology: Marine Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues
Published

Temperature is stronger than light and flow as driver of oxygen in US rivers      (via sciencedaily.com)     Original source 

The amount of dissolved oxygen in a river is a matter of life or death for the plants and animals living within it, but this oxygen concentration varies drastically from one river to another, depending on their unique temperature, light and flow. To better understand which factor has the greatest impact on the concentration of dissolved oxygen, researchers used a deep learning model to analyze data from hundreds of rivers across the United States.

Biology: Cell Biology Biology: Developmental Biology: General Ecology: Sea Life
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Jellyfish and fruit flies shed light on the origin of hunger regulation      (via sciencedaily.com)     Original source 

To survive, all organisms must regulate their appetite. Hormones and small proteins called neuropeptides perform this process, stimulating feelings of hunger and fullness. When researchers noted the similarities between GAWamide, a neuropeptide that regulates feeding in the Cladonema jellyfish, and myoinhibitory peptide, a neuropeptide that regulates feeding in fruit flies, they decided to test whether they could exchange the two. Their success in doing so highlights the deep evolutionary origins of feeding regulation.

Biology: Biochemistry Biology: General Biology: Marine Biology: Microbiology Ecology: Extinction Ecology: Sea Life Environmental: Ecosystems Environmental: General Geoscience: Geochemistry
Published

Newly discovered probiotic could protect Caribbean corals threatened by deadly, devastating disease      (via sciencedaily.com)     Original source 

Researchers have discovered the first effective bacterial probiotic for treating and preventing stony coral tissue loss disease (SCTLD), a mysterious ailment that has devastated Florida's coral reefs since 2014 and is rapidly spreading throughout the Caribbean. The probiotic treatment provides an alternative to the use of the broad-spectrum antibiotic amoxicillin, which has so far been the only proven treatment for the disease but which runs the risk of promoting antibiotic-resistant bacteria.

Biology: Biochemistry Biology: General Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Severe Weather
Published

Coral skeletons influence reef recovery after bleaching      (via sciencedaily.com)     Original source 

Natural disasters can devastate a region, abruptly killing the species that form an ecosystem's structure. But how this transpires can influence recovery. While fires scorch the landscape to the ground, a heatwave leaves an army of wooden staves in its wake. Storm surges and coral bleaching do something similar underwater.

Biology: Biochemistry Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Genetics Biology: Marine Geoscience: Geography
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A cold-specialized icefish species underwent major genetic changes as it migrated to temperate waters      (via sciencedaily.com)     Original source 

Biologists have explored the genetic mechanisms underlying the transition from freezing Antarctic waters to more temperature waters by Antarctic Notothenioid fish.

Biology: Biochemistry Biology: Cell Biology Biology: General Biology: Marine Biology: Zoology Ecology: Sea Life
Published

Red tide warning system      (via sciencedaily.com)     Original source 

Current methods to monitor red tide are limited. Using AUTOHOLO, a new autonomous, submersible, 3D holographic microscope and imaging system, a study is the first to characterize red tide in the field and breaks new ground for monitoring harmful algal blooms.

Biology: Biochemistry Biology: Marine Biology: Microbiology Ecology: Sea Life Environmental: Ecosystems Environmental: Water Geoscience: Geography
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Ocean warming intensifies viral outbreaks within corals      (via sciencedaily.com)     Original source 

A groundbreaking three-year study in the South Pacific has found evidence that ocean warming can trigger outbreaks of 'dinoflagellate-infecting RNA viruses' that attack symbiotic algae inside corals. Coral reef viruses have gained greater attention since being implicated in 2021 as a possible cause of stony coral tissue loss disease that has decimated Florida and Caribbean reefs for almost a decade.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
Published

Scientists discover hidden crab diversity among coral reefs      (via sciencedaily.com) 

The Indo-West Pacific is the largest marine ecosystem on Earth, but scientists who study its diversity have to contend with a problem so well-known it was remarked upon by Charles Darwin: related species in the IWP have similar appearances, making it difficult to assess just how many there are. A new study reveals that nearly identical crab species have one consistently distinguishing feature, which only evolves when their ranges overlap.

Biology: Biochemistry Biology: General Biology: Marine Biology: Microbiology Biology: Zoology Ecology: Nature Ecology: Sea Life Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Earth prefers to serve life in XXS and XXL sizes      (via sciencedaily.com) 

Life comes in all shapes in sizes, but some sizes are more popular than others, new research has found. A survey of body sizes of all Earth's living organisms has uncovered an unexpected pattern. Contrary to what current theories can explain, our planet's biomass -- the material that makes up all living organisms -- is concentrated in organisms at either end of the size spectrum.

Biology: General Biology: Marine Ecology: Sea Life Geoscience: Oceanography
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Juvenile black rockfish affected by marine heat wave but not always for the worse, research shows      (via sciencedaily.com) 

Larvae produced by black rockfish, a linchpin of the West Coast commercial fishing industry for the past eight decades, fared better during two recent years of unusually high ocean temperatures than had been feared, new research finds.

Biology: Biochemistry Biology: Biotechnology Biology: Cell Biology Biology: General Biology: Marine Ecology: Extinction Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
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Detecting coral biodiversity in seawater samples      (via sciencedaily.com) 

Researchers have developed a method to measure coral biodiversity through extracting the environmental DNA (or eDNA) from a liter of surface seawater collected from above a reef. The method has been confirmed to work through observations made by scientific divers in the same areas of ocean. This has paved the way for large-scale comprehensive surveys of reef-building coral to take place and removes the reliance of direct observations made through scientific scuba diving or snorkeling.

Biology: Biochemistry Biology: Cell Biology Biology: General Biology: Genetics Biology: Marine Biology: Molecular Ecology: Animals Ecology: Endangered Species Ecology: Invasive Species Ecology: Sea Life
Published

How whale shark rhodopsin evolved to see, in the deep blue sea      (via sciencedaily.com) 

A group of researchers discovered that the rhodopsin -- a protein in the eye that detects light -- of whale sharks has changed to efficiently detect blue light, which penetrates deep-sea water easily. The amino acid substitutions -- one of which is counterintuitively associated with congenital stationary night blindness in humans -- aid in detecting the low levels of light in the deep-sea. Although these changes make the whale shark rhodopsin less thermally stable the deep-sea temperature, allows their rhodopsin to keep working. This suggests that the unique adaptation evolved to function in the low-light low-temperature environment where whale sharks live.