Popular Sharks News and Current Events

Popular Sharks News and Current Events, Sharks News Articles.
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Size is everything
The susceptibility of ecosystems to disruption depends on a lot of factors that can't all be grasped. Ulrich Brose from University of Jena (Germany) has therefore developed a new method that provides good results with only a few information about the properties of predators. The model confirms that a large body mass index between predator and prey creates stable systems. It can also predict which predator species play a key role. (2019-05-20)

Diverse and abundant megafauna documented at new Atlantic US Marine National Monument
Airborne marine biologists were dazzled by the diversity and abundance of large, unusual and sometimes endangered marine wildlife on a recent trip to the Northeast Canyons and Seamounts National Marine Monument, about 150 miles southeast of Cape Cod. (2018-05-16)

A dolphin diet
The health of dolphin populations worldwide depends on sustained access to robust food sources. (2017-08-02)

Whale Sharks show remarkable capacity to recover from injuries
A new study has for the first time explored the extraordinary rate at which the world's largest fish, the endangered whale shark, can recover from its injuries. The findings reveal that lacerations and abrasions, increasingly caused through collisions with boats, can heal in a matter of weeks and researchers found evidence of partially removed dorsal fins re-growing. (2021-02-23)

How much is wildlife tourism affecting the animals it targets?
A new study in Conservation Physiology, published by Oxford University Press, reveals that white shark activity increases dramatically when the animals are interacting with cage-diving operators. (2018-06-07)

How maximizing fish stocks in the long-term will reduce bycatch
Efforts to sustainably manage fisheries will also reduce bycatch, a new study suggests. (2018-03-15)

Growing teeth and a backbone: Studies trace early origins of skeletal tissues
Two new studies on the evolutionary origin of teeth and of vertebra further illuminate the human connection to marine organisms that goes back millions of years. Both studies in the little skate (Leucoraja erinacea) are published this week by Andrew Gillis and Katharine Criswell of the University of Cambridge, UK, who conduct research as Whitman Center Scientists at the Marine Biological Laboratory, Woods Hole. (2017-11-22)

Shark hotspots under worldwide threat from overfishing
In a groundbreaking new study published in the journal Nature, an international team of over 150 scientists from 26 countries combined movement data from nearly 2,000 sharks tracked with satellite tags. Using this tracking information, researchers identified areas of the ocean that were important for multiple species, shark 'hot spots', that were located in ocean frontal zones, boundaries in the sea between different water masses that are highly productive and food-rich. (2019-07-25)

Tracking data reveal the secret lives of marine animals
Tracking devices deployed on wild animals have revealed unexpected behaviors and migratory patterns in marine animals ranging from sharks and seals to turtles and albatrosses. Researchers from around the world have now pooled their data on the movements of a wide array of marine animals, enabling them to look for common features in how animals move throughout the world's oceans. (2018-02-26)

Marine animals explore the ocean in similar ways
Marine animals of different body size, shape and mode of movement, move through the ocean in similar ways. (2018-02-26)

Basking sharks gather in large groups off northeast US coast
Groups of basking sharks ranging from as few as 30 to nearly 1,400 individual animals have been observed aggregating in waters from Nova Scotia to Long Island. While individual sightings are fairly common, seeing large groups is not. The reason why the animals congregate has not been clearly determined, and observations of these aggregation events are relatively rare. (2018-03-30)

Fear of sharks influences seaweed growth on Fijian coral reefs
Fishes' fear of sharks helps shape shallow reef habitats in the Pacific, according to new research by a scientist at Bigelow Laboratory for Ocean Sciences. The study is the first clear case of sharks altering a coral reef ecosystem through an indirect effect - creating an atmosphere of fear that shifts where herbivores feed and seaweeds grow. (2017-11-27)

Conservationists should harness 'Hollywood effect' to help wildlife
Researchers from the University of Exeter say conservation scientists could work with filmmakers to harness the 'Hollywood effect' to boost conservation. (2017-09-28)

A natural fertilizer
It's long been known that sharks help nourish coral reefs, but exactly to what extent has never been scientifically mapped out -- until now. (2018-03-21)

Fish evolve by playing it safe
New research supports the creation of more marine reserves in the world's oceans because, the authors say, fish can evolve to be more cautious and stay away from fishing nets. (2017-03-21)

UF reports 2017 as average year for worldwide shark attacks, deaths
Throughout his more than 40-year career at the University of Florida, George Burgess gained an international reputation with the media and public as a reliable source and shark attack expert who always stressed the importance of shark conservation. (2018-02-05)

Who's tougher? Baby sharks or daddy sharks?
One would assume that since humans and many animals tend to get stiffer and perhaps tougher as they reach adulthood, the same would be true for sharks. A new study finds the opposite in these swift-swimming marine predators. The youngest sharks were stiffer and tougher than older sharks. Another key finding is that while scientists have historically looked at alternating patterns of mineralization on sharks' vertebrae to determine their age, these patterns are not related to time. (2019-01-03)

New shark species confirmed
Using 1,310 base pairs of two mitochondrial genes, Toby Daly-Engel, an assistant professor of biological sciences at Florida Tech, and colleagues identified a new species, the Atlantic sixgill shark. (2018-02-20)

Space-inspired study unravels mysterious constellations of the oceans
Vital scientific information about whale shark behavior, biology and ecology is being uncovered by an unlikely source -- ecotourists and other citizens. Thanks to modern advancements in technology and the burgeoning field of 'citizen science,' new information about gregarious and mysterious whale sharks is being revealed in a study slated to publish on Nov. 29 in BioScience. (2017-11-29)

Size doesn't matter -- at least for hammerheads and swimming performance
Different head shapes and different body sizes of hammerhead sharks should result in differences in their swimming performance right? Researchers from Florida Atlantic University have conducted the first study to examine the whole body shape and swimming kinematics of two closely related yet very different hammerhead sharks, with some unexpected results. (2017-10-10)

New study finds genetic evidence that magnetic navigation guides loggerhead sea turtles
New research from the University of North Carolina at Chapel Hill provides valuable insight into the navigation and nesting behaviors of loggerhead sea turtles that could inform future conservation efforts. Loggerhead sea turtles that nest on beaches with similar magnetic fields are genetically similar to one another, according to a new study by UNC-Chapel Hill biologists Kenneth Lohmann and Roger Brothers. The study will be published in the journal Current Biology on April 12. (2018-04-12)

Human deaths from shark attacks hit 20-year low last year
Fatal shark attacks worldwide dipped to their lowest levels in two decades in 2007 with the sole casualty involving a swimmer vacationing in the South Pacific, according to the latest statistics from the University of Florida. (2008-02-12)

First successful wild whale shark health assessments performed
For the first time ever, scientists successfully performed health assessments, including collecting blood and biological samples, taking measurements and attaching satellite tracking tags, to a population of wild whale sharks -- the world's largest fish, classified as 'endangered' since 2016. The research advancement, which occurred in Indonesia's remote Cendrawasih Bay, has significant implications for unlocking the mysteries surrounding the overall health of whale sharks -- including the potential impacts of tourism on their health. (2017-08-17)

Guelph study shows endangered sharks, rays further threatened by global food markets
A majority of shark fins and manta ray gills sold around the globe for traditional medicines come from endangered species, a University of Guelph study has revealed. Using cutting-edge DNA barcoding technology, researchers found 71 per cent of dried fins and gills collected from markets in Canada, China and Sri Lanka came from species listed as at-risk and therefore banned from international trade. (2017-08-25)

First an alga, then a squid, enigmatic fossil is actually a fish
A fossil slab discovered in Kansas 70 years ago and twice misidentified -- first as a green alga and then as a cephalopod -- has been reinterpreted as the preserved remains of a large cartilaginous fish, the group that includes sharks and rays. In a study published in the Journal of Paleontology, American Museum of Natural History researchers describe the fishy characteristics of the animal, which lived between 70-85 million years ago. (2018-04-16)

Even a shark's electrical 'sixth sense' may be tuned to attack
Imagine having superhuman hearing. You're at a noisy, cocktail party and yet your ears can detect normally inaudible sounds. But, unlike normal hearing, each of these sounds causes your ears to react in the same way. There is no difference between the quietest and loudest movements. According to a study funded by the National Institutes of Health, that may be how a shark's electrosensing organ reacts when it detects teensy, tiny electrical fields emanating from nearby prey. (2018-05-30)

Smart skin for flexible monitoring
An electronic tag that stretches and flexes while it records location and environmental data can monitor marine animals in their natural habitat. (2018-05-03)

Official stats mask shark and ray species caught in the Mediterranean and Black seas
A new study reveals that 97 per cent of the sharks and rays caught and brought to market domestically by fleets from the European, North African and Middle Eastern countries that surround the Mediterranean and Black seas are not reported by species. (2019-04-08)

Eight-year research stretch yields treatise on tapeworms along with hundreds of new species
A special publication titled (2017-11-21)

Scientists confirm first 2-headed bull shark
Scientists have confirmed the discovery of the first-ever, two-headed bull shark. (2013-03-25)

New software will standardize data collection for great white sharks
The lack of a standardized procedure for collecting data about elusive and hard to find species like the great white shark has to date seriously hampered efforts to manage and protect these animals. But now a marine biologist, an applied mathematician and a software developer from Stellenbosch University joined expertise to develop a custom-made software package, called Identifin, which may offer a solution to this problem. (2017-02-13)

White shark researchers tap data from electronic tags to gain insights into survival rates
Researchers in the United States and Mexico have tagged juvenile white sharks for nearly two decades, tracking their movements in coastal waters of the Northeastern Pacific. Now -- drawing on methods used to study mountain lions, coyotes, moose and other terrestrial animals -- they've tapped those data in a new way, gaining the first empirical estimate of annual survival rates for young white sharks and quantifying the role fishing plays in the rate of white shark deaths. (2018-05-09)

Success of conservation efforts for important Caribbean Reef fish hinges on climate change
Marine scientists predict climate change might severely hinder efforts to protect populations of the endangered and iconic Nassau grouper by the end of this century. (2018-07-11)

Bite on this: Kansas State University researcher finds alligators eat sharks
Jaws, beware! Alligators may be coming for you, according to a Kansas State University researcher. A study in Southeastern Naturalist documents American alligators on the Atlantic and Gulf coasts are eating small sharks and stingrays. This is the first scientific documentation of a widespread interaction between the two predators. (2017-10-16)

Overfishing great sharks wiped out North Carolina bay scallop fishery
Fewer big sharks in the oceans led to the destruction of North Carolina's bay scallop fishery and inhibits the recovery of depressed scallop, oyster and clam populations along the US Atlantic Coast, according to an article in the March 30 issue of the journal Science. (2007-03-29)

Study shows how skates, rays and sharks sense electrical fields
Sharks, rays and skates can hunt for prey hidden in the sandy sea floor by 'listening' for faint traces of bioelectricity -- they can literally sense their prey's heart beating. The basic anatomy of the electro-sensory organs that accomplish this feat has been known for decades, but the biological mechanisms -- how electrosensory cells pick up faint electrical signs of life -- has remained a puzzle. (2017-03-06)

New NSF special report released ahead of World Oceans Day: Catch a Wave! The Science of Summer


Ancient fish scales and vertebrate teeth share an embryonic origin
Latest findings support the theory that teeth in the animal kingdom evolved from the jagged scales of ancient fish, the remnants of which can be seen today embedded in the skin of sharks and skate. (2017-11-20)

Ocean's fiercest predators now vulnerable to extinction
The numbers of many large shark species have declined by more than half due to increased demand for shark fins and meat, recreational shark fisheries, as well as tuna and swordfish fisheries, where millions of sharks are taken as bycatch each year. Now, the global status of large sharks has been assessed by the World Conservation Union, widely recognized as the most comprehensive, scientific-based information source on the threat status of plants and animals. (2008-02-17)

Counting sharks
Researchers recalibrate shark population density using data they gathered during eight years of study on Palmyra atoll. (2017-02-21)

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