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.

 

Global analysis reveals how sharks travel the oceans to find food
You’ve heard of “you are what you eat” - this research shows that for sharks, the more relevant phrase is “you are where you ate.”
Publ.Date : Thu, 18 Jan 2018 14:29:03 EST

Recent advances in understanding coral resilience are essential to safeguard coral reefs
The most urgent course of action to safeguard coral reefs is to reduce global greenhouse gas emissions, but concurrently there is also a need to consider novel management techniques and previously over-looked reef areas for protective actions under predicted climate change impacts. The conclusions were reached following a comprehensive review of the literature on the mechanisms of potential coral resistance and recovery across scales from global reef areas to the microbial level within individual corals.
Publ.Date : Thu, 18 Jan 2018 14:19:09 EST

Warming Arctic climate constrains life in cold-adapted mammals
A new study has uncovered previously unknown effects of rain-on-snow events, winter precipitation and ice tidal surges on the muskoxen.
Publ.Date : Thu, 18 Jan 2018 10:08:06 EST

Aid for oceans and fisheries in developing world drops by 30 percent
Financial aid to fisheries in developing countries has declined by 30 percent, finds a new study. Projects focusing on climate issues in fisheries had a 77 percent decline over the five years studied.
Publ.Date : Wed, 17 Jan 2018 16:40:18 EST

Exposure to water that is both salty and fresh is key to future success
According to Charles Darwin the ability to adapt to new conditions is essential for survival of species. The capacity to cope with altered conditions is becoming increasingly important in the face of climate change. New evidence on salt water tolerance in spawning migrating pike from the Baltic Sea suggests that not being adapted to specific local environments may promote persistence in an uncertain, rapidly changing world.
Publ.Date : Wed, 17 Jan 2018 13:54:20 EST

Scale-eating fish adopt clever parasitic methods to survive
A small group of fishes -- possibly the world's cleverest carnivorous grazers -- feeds on the scales of other fish in the tropics. Biologists are trying to understand these scale-feeding fish and how this odd diet influences their body evolution and behavior.
Publ.Date : Wed, 17 Jan 2018 13:51:36 EST

Coping with climate stress in Antarctica
Some Antarctic fish living in the planet's coldest waters are able to cope with the stress of rising carbon dioxide levels the ocean. They can even tolerate slightly warmer waters. But they can't deal with both climate change stressors at the same time, according to a new study.
Publ.Date : Wed, 17 Jan 2018 12:16:40 EST

California sea lion population rebounded to new highs
California sea lions have fully rebounded under the protection of the Marine Mammal Protection Act, with their population on the West Coast reaching carrying capacity in 2008 before unusually warm ocean conditions reduced their numbers, according to the first comprehensive population assessment of the species.
Publ.Date : Wed, 17 Jan 2018 11:50:03 EST

Nanowrinkles could save billions in shipping and aquaculture
Biofouling costs shipping billions in increased fuel costs and affects aquaculture. A nanostructured surface inspired by the carnivorous pitcher plant could slash those costs.
Publ.Date : Wed, 17 Jan 2018 09:23:42 EST

No-fishing zones help endangered penguins
Small no-fishing zones around colonies of African penguins can help this struggling species, new research shows.
Publ.Date : Tue, 16 Jan 2018 22:25:17 EST

Drones confirm importance of Costa Rican waters for sea turtles
A new drone-enabled population survey -- the first ever on sea turtles -- shows that larger-than-anticipated numbers of turtles aggregate in waters off Costa Rica's Ostional National Wildlife Refuge. Scientists estimate turtle densities may reach up to 2,086 animals per square kilometer. The study underscores the importance of the Ostional habitat; it also confirms that drones are a reliable tool for surveying sea turtle abundance.
Publ.Date : Tue, 16 Jan 2018 15:12:59 EST

Surfers three times more likely to have antibiotic-resistant bacteria in guts
Scientists compared fecal samples from surfers and non-surfers to assess whether the surfers' guts contained E. coli bacteria that were able to grow in the presence of the antibiotic cefotaxime. Cefotaxime has previously been prescribed to kill off these bacteria, but some have acquired genes that enable them to survive this treatment. The study found that 13 of 143 (9 percent) of surfers were colonized by these resistant bacteria, compared to just four of 130 (3 percent) of non-surfers swabbed.
Publ.Date : Mon, 15 Jan 2018 09:42:43 EST

Robots aid better understanding of phytoplankton blooms
Phytoplankton blooms are one of the most important factors contributing to the efficiency of the carbon pump in the North Atlantic Ocean. To better understand this phenomenon, researchers have developed a new class of robots able to collect data in the ocean throughout the year. Using these unparalleled data, the researchers have identified the starting point for the explosive spring phytoplankton bloom.
Publ.Date : Mon, 15 Jan 2018 09:42:31 EST

New application for acoustics helps estimate marine life populations
Researchers have for the first time have used hydroacoustics as a method for comparing the abundance of fishes within and outside marine protected areas (MPAs).
Publ.Date : Mon, 15 Jan 2018 09:42:25 EST

Tagged tiger shark proving unstoppable
For more than a decade, researchers have been tagging and tracking sharks in order to study their migratory patterns and more. One tiger shark - Andy - is now the longest-ever tracked tiger shark, providing years worth of data for researchers.
Publ.Date : Thu, 11 Jan 2018 16:30:13 EST

Rising CO2 is causing trouble in freshwaters too, study suggests
As carbon dioxide (CO2) levels in the atmosphere rise, more CO2 gets absorbed into seawater. As a result, the world's oceans have grown more acidic over time, causing a wide range of well-documented problems for marine animals and ecosystems. Now, researchers present some of the first evidence that similar things are happening in freshwaters too.
Publ.Date : Thu, 11 Jan 2018 14:17:36 EST

Rising temperatures turning major sea turtle population female
Scientists have used a new research approach to show that warming temperatures are turning one of the world's largest sea turtle colonies almost entirely female, running the risk that the colony cannot sustain itself in coming decades, newly published research concludes.
Publ.Date : Thu, 11 Jan 2018 10:14:08 EST

Turkey-sized dinosaur from Australia preserved in an ancient log-jam
The partial skeleton of a new species of turkey-sized herbivorous dinosaur has been discovered in 113-million-year-old rocks in southeastern Australia. The fossilized tail and foot bones give new insight into the diversity of small, bipedal herbivorous dinosaurs called ornithopods that roamed the great rift valley that once existed between Australia and Antarctica.
Publ.Date : Thu, 11 Jan 2018 08:49:46 EST

Dramatic decline in genetic diversity of Northwest salmon
Columbia River Chinook salmon have lost as much as two-thirds of their genetic diversity, researchers have found. The researchers reached this conclusion after extracting DNA from scores of bone samples -- some harvested as many as 7,000 years ago -- and comparing them to the DNA of Chinook currently swimming in the Snake and Columbia rivers. The work is 'the first direct measure of reduced genetic diversity for Chinook salmon from the ancient to the contemporary period.'
Publ.Date : Wed, 10 Jan 2018 14:13:12 EST

Body size of marine plankton, currents keys to dispersal in ocean
A new international study found that the size of plankton, and the strength and direction of currents, are key to how they are dispersed in the ocean -- much more so than physical conditions including differences in temperature, salinity and nutrient availability.
Publ.Date : Wed, 10 Jan 2018 13:23:23 EST