Marine Biology News

Courtesy of Science Daily

Welcome to Sea and Sky's Marine Biology News. Here you can find links to the latest ocean news headlines in the topic of marine biology. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

Life on the floor of the Arctic Ocean, with rigor and in detail
In an extensive and rigorous study of animal life on the Central Arctic Ocean floor, researchers have shown that water depth and food availability influence the species composition, density, and biomass of benthic communities.
Publ.Date : Wed, 17 Oct 2018 14:10:11 EDT

Bacterioplankton: Taking their vitamins
New research finds that more bacterioplankton utilize vitamin B1 or B1 precursors from their environment than synthesize their own. The researchers also found that B1 availability can directly limit bacterioplankton growth, which could have larger impacts on aquatic microbial food webs, as well as energy and nutrient exchange.
Publ.Date : Wed, 17 Oct 2018 12:44:51 EDT

A curious branch of plankton evolution
Planktonic foraminifera -- tiny, shelled organisms that float in the sea -- left behind one of the most complete fossil records of evolutionary history in deep sea deposits. Consequently, evolutionists have a relatively sturdy grasp on when and how new lineages arose. However, a new study reveals that one lineage evolved much more rapidly than everyone predicted, and researchers are looking beyond Darwin's original theories of gradual evolution to understand why.
Publ.Date : Wed, 17 Oct 2018 11:09:50 EDT

Satellite tech to create more effective, 'true' shark sanctuaries
When they first set out to follow grey reef sharks around the Republic of the Marshall Islands (RMI), researchers intended to survey their movement in the protected waters there. What they found was a disturbing development for the Pacific island nation.
Publ.Date : Tue, 16 Oct 2018 13:19:38 EDT

Arctic sea ice decline driving ocean phytoplankton farther north
A new study reveals phytoplankton spring blooms in the Arctic Ocean, which were previously nonexistent, are expanding northward at a rate of one degree of latitude per decade. Although blooms did not previously occur in this area, phytoplankton were present in the Arctic's central basin at low biomass. The study also found the primary productivity of the phytoplankton, or the rate at which phytoplankton convert sunlight into chemical energy, is increasing during the spring blooms.
Publ.Date : Mon, 15 Oct 2018 14:15:14 EDT

Extensive trade in fish between Egypt and Canaan 3,500 years ago
Some 3,500 years ago, a brisk trade in fish on the shores of the southeastern Mediterranean Sea had already begun. This conclusion follows from the analysis of 100 fish teeth that were found at various archeological sites in what is now Israel.
Publ.Date : Mon, 15 Oct 2018 10:04:51 EDT

Sea snail shells dissolve in increasingly acidified oceans
Shelled marine creatures living in increasingly acidified oceans face a fight for survival as the impacts of climate change spread, a new study suggests.
Publ.Date : Mon, 15 Oct 2018 08:46:11 EDT

Did mosasaurs hunt like killer whales?
Researchers have examined the youngest-ever specimen of tylosaur ever found. Like orcas, mosasaurs might have used their bony noses to strike prey.
Publ.Date : Fri, 12 Oct 2018 15:26:10 EDT

Shrimp talent quest finds a winner
Shrimp help keep fish clean -- and scientists have identified the 'cleaner shrimp' with the most talent for reducing parasites and chemical use in farmed fish.
Publ.Date : Thu, 11 Oct 2018 10:36:49 EDT

New study helps explain recent scarcity of Bay nettles
A new, long-term study of how environmental conditions affect the abundance and distribution of jellyfish in the nation's largest estuary helps explain the widely reported scarcity of sea nettles within Chesapeake Bay during the past few months and raises concerns about how a long-term continuation of this trend might harm Bay fisheries as climate continues to warm.
Publ.Date : Wed, 10 Oct 2018 16:47:00 EDT

Evolutionary 'arms race' -- how dolphins and whales fight disease threats
A groundbreaking study reveals how dolphins, whales and other cetaceans compete for survival in an evolutionary 'arms race' with changing pathogenic threats like mercury and brevotoxin (e.g. Red Tide). Researchers show that cetaceans use several strategies for success in this race. They have developed tools to help wildlife managers and health professionals assess disease risk from the perspective of how individual animals are engineered to recognize the molecules of microorganisms in the environment and launch an immune response.
Publ.Date : Wed, 10 Oct 2018 09:36:12 EDT

Polar bears gorged on whales to survive past warm periods; won't suffice as climate warms
A new study found that while dead whales are valuable sources of fat and protein for some polar bears, this resource will likely not be enough to sustain most bear populations in the future when the Arctic becomes ice-free in summers.
Publ.Date : Tue, 09 Oct 2018 17:56:39 EDT

'Sentinels of the sea' at risk from changing climate
Climate change's effect on coastal ecosystems is very likely to increase mortality risks of adult oyster populations in the next 20 years.
Publ.Date : Tue, 09 Oct 2018 13:59:58 EDT

Increase in plastics waste reaching remote South Atlantic islands
The amount of plastic washing up onto the shores of remote South Atlantic islands is 10 times greater than it was a decade ago, according to new research. Scientists investigating plastics in seas surrounding the remote British Overseas Territories discovered they are invading these unique biologically-rich regions. This includes areas that are established or proposed Marine Protected Areas (MPAs).
Publ.Date : Tue, 09 Oct 2018 10:25:23 EDT

High-res data offer most detailed look yet at trawl fishing footprint around the world
A new analysis that uses high-resolution data for 24 ocean regions in Africa, Europe, North and South America and Australasia shows that 14 percent of the overall seafloor shallower than 1,000 meters (3,280 feet) is trawled. The analysis shows that the footprint of bottom-trawl fishing on continental shelves and slopes across the world's oceans often has been substantially overestimated.
Publ.Date : Mon, 08 Oct 2018 18:34:13 EDT

Land-locked Atlantic salmon also use magnetic field to navigate
A new study shows that Atlantic salmon use the Earth's magnetic field as a navigational tool -- much like their cousins, Pacific salmon -- and don't lose that ability through several generations of fish even after they have been transplanted into a land-locked lake.
Publ.Date : Mon, 08 Oct 2018 18:33:52 EDT

Getting a grip on the slow but unique evolution of sharks
Scientists have decoded the whole genomes of two shark species for the first time and improved the whale shark genome sequences released previously. By analyzing the genomes and comparing them with those of other vertebrate species, they have constructed an overview of their unique life histories and evolutionary paths.
Publ.Date : Mon, 08 Oct 2018 11:46:10 EDT

A copper bullet for tuberculosis
In a new study, chemists report a new antibiotic that can find and kill tuberculosis bacteria where they hide.
Publ.Date : Thu, 04 Oct 2018 10:00:12 EDT

Seagrass meadows in Guam have decreased by 22 percent, new analysis shows
As the oceans warm and humans migrate to or grow in numbers in coastal areas of the world, scientists are increasingly keeping an eye on ocean seagrasses and their decline. A new analysis shows that seagrass meadows in Guam have decreased by 22 percent.
Publ.Date : Thu, 04 Oct 2018 10:00:02 EDT

First evidence of fatal infection of white-tailed sea eagles with avian influenza
The most common unnatural causes of death in white-tailed sea eagles are lead poisoning and collisions with trains. During the winter of 2016/2017, however, many white-tailed eagles died in Northern Germany in circumstances unrelated to either cause. Instead, at least 17 white-tailed sea eagles were killed by avian influenza of the highly pathogenic virus subtype H5N8. Avian influenza may become a new threat for this highly protected wild species.
Publ.Date : Thu, 04 Oct 2018 09:59:27 EDT