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's extremists may be an untapped source of antibacterial drugs
Life's extremists, a family of microbes called Archaea, may be an untapped source of new antibacterial drugs. That conclusion arises from the discovery of the first antibacterial gene in this ancient lineage.
Publ.Date : Fri, 21 Nov 2014 10:25:53 EST

Environmental bleaching impairs long-term coral reproduction
Bleaching -- a process where high water temperatures or UV light stresses the coral to the point where it loses its symbiotic algal partner that provides the coral with color -- is also affecting the long-term fertility of the coral.
Publ.Date : Wed, 19 Nov 2014 15:15:59 EST

History's lesson reveals depth of fish catch decline
Scientists in Australia have used historic media to measure the decline in Queensland's pink snapper fishery, highlighting a drop of almost 90 percent in catch rates since the 19th century.
Publ.Date : Tue, 18 Nov 2014 10:54:18 EST

Virus devastating sea stars on Pacific Coast identified
Scientists have now explained the mysteriously sudden appearance of a disease that has decimated sea stars on the North American Pacific Coast.
Publ.Date : Mon, 17 Nov 2014 16:44:07 EST

Extinction risk not the answer for reef futures
Leading coral reef scientists say there needs to be a new approach to protecting the future of marine ecosystems, with a shift away from the current focus on extinction threat.
Publ.Date : Mon, 17 Nov 2014 11:17:38 EST

Evolutionary constraints revealed in diversity of fish skulls
In the aquatic environment, suction feeding is far more common than biting as a way to capture prey. A new study shows that the evolution of biting behavior in eels led to a remarkable diversification of skull shapes, indicating that the skull shapes of most fish are limited by the structural requirements for suction feeding.
Publ.Date : Mon, 17 Nov 2014 08:47:21 EST

Scientists employ satellite tags to solve whale-sized mystery
For the first time, scientists working in the waters of Patagonia are using satellite tags to remotely track southern right whales from their breeding/calving grounds in the sheltered bays of Península Valdés, Argentina, to unknown feeding grounds somewhere in the western South Atlantic.
Publ.Date : Fri, 14 Nov 2014 13:10:28 EST

Combatting illegal fishing in offshore marine reserves
Conservation scientists say there needs to be a new approach to protecting offshore marine reserves. They have found a way to predict illegal fishing activities to help authorities better protect marine reserves.
Publ.Date : Thu, 13 Nov 2014 11:03:04 EST

Climate change puts coastal crabs in survival mode, study finds
Intertidal zone crabs can adapt to a warming climate, but will not have energy for much else besides basic survival, researchers have learned. In the first study to look at the combined effects of varying temperatures and ocean acidity levels on porcelain crabs, researchers found that as temperature rises and pH drops, the crabs' thermal tolerance increases but their metabolism slows.
Publ.Date : Wed, 12 Nov 2014 20:32:12 EST

Peru: Towards better forecasting of fish resources
Its turbid cold waters are home to the largest fish stocks in the world: the Humboldt Current system, which runs along the Peruvian and Chilean coasts, boasts exceptional biological productivity thanks to a very intense coastal upwelling phenomenon – ascents of deep nutrient-rich waters. Thanks to high-resolution models of the oceanic circulation and water oxygen content, researchers have now quantified this ecosystem's sensitivity to various disturbances in the equatorial Pacific.
Publ.Date : Wed, 12 Nov 2014 13:19:58 EST

A tale of two seas: Last Ice Age has shaped sharks across Europe
Shark populations in the Mediterranean are highly divided, an international team of scientists has shown. The study used genetic techniques to investigate the population structure of the small-spotted shark, Scyliorhinus canicula. The species is common throughout Europe and has been eaten since ancient times, as documented in Roman mosaics.
Publ.Date : Wed, 12 Nov 2014 12:02:06 EST

Breakthrough shows how 'termites of the sea' digest wood
A novel digestive strategy in a wood-boring clam has been discovered by researchers. The breakthrough, the researchers say, may also be a game-changer for the industrial production of clean biofuels.
Publ.Date : Mon, 10 Nov 2014 21:10:28 EST

Iron fertilization less efficient for deep-sea carbon dioxide storage than previously thought?
Scientists have discovered that iron fertilization promotes the growth of shelled organisms. In a naturally iron-fertilized system in the Southern Ocean the growth and sinking of these phytoplankton grazers reduces carbon dioxide deep-ocean storage by up to 30 percent. Ignoring this response could result in overestimating the marine carbon dioxide storage capacity resulting from iron fertilization.
Publ.Date : Mon, 10 Nov 2014 12:42:23 EST

A sea change for marine conservation
Harnessing 'people power' to manage fisheries in the developing world has significantly benefited local communities and coral reefs, according to new research.
Publ.Date : Mon, 10 Nov 2014 11:07:28 EST

Climate variability has an opposing impact on marine life and tree growth
The same climatic drivers that enhance upwelling of nutrient-rich ocean waters and support of marine productivity can result in lower precipitation on land and slower tree-growth. Tree-ring chronologies helped to explain how upwelling was happening during the past 600 years.
Publ.Date : Mon, 10 Nov 2014 08:34:06 EST

Crustaceans win battle against being feminized
Male crustaceans can ‘lock down’ their maleness to avoid being completely feminized by seawater contaminated by feminizing pollutants, according to scientists.
Publ.Date : Mon, 10 Nov 2014 08:34:02 EST

Scientists examine mysterious tar mounds in the West African deep ocean
More than two thousand mounds of asphalt harboring a wealth of deep-water creatures have been discovered up to two kilometers deep, off the coast of Angola. Scientists have been examining the images and data captured at the site to build an intriguing picture of the life and geology of this underwater area. The naturally-occurring asphalt mounds are made up of the same substance that covers our roads.
Publ.Date : Fri, 07 Nov 2014 09:15:36 EST

Rare 2.5-billion-year-old rocks reveal hot spot of sulfur-breathing bacteria: Sulfur-dependent life forms thrived in oceans
Biogeochemical signals in 2.5-billion-year-old carbonate rocks from Brazil reveal that sulfur-consuming bacteria were active at a time when ocean sulfur levels were low. Geologists focused on sulfur isotopes in ancient carbonate rocks. The study sheds light on Earth's early atmospheric chemistry.
Publ.Date : Thu, 06 Nov 2014 14:37:11 EST

Nutrients that feed red tide 'under the microscope' in major study
The 'food' sources that support Florida red tides are more diverse and complex than previously realized, according to five years' worth of research on red tide and nutrients. The microbiology, physiology, ecology and physical oceanography factors affecting red tides were documented in new detail and suggestions for resource managers addressing red tide in the coastal waters of southwest Florida were offered.
Publ.Date : Thu, 06 Nov 2014 13:23:19 EST

Machine vision for catch quality assurance
Robots equipped with machine vision enable us to classify catches on board vessels with high levels of accuracy – saving fishing crews time and money. When pelagic fish such as herring and mackerel are coming to market, auctions are hectic and time is short. Price is determined by the volume of the catch and its weight distribution.
Publ.Date : Thu, 06 Nov 2014 08:24:15 EST