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News articles on bycatch
Mongabay.com news articles on bycatch in blog format. Updated regularly.
(05/09/2013) A new short film, Viva la tortuga documents the struggle to save loggerhead and green sea turtles in Magdalena Bay, Mexico. Once a region for a massive sea turtle meat market, the turtles now face a new threat: bycatch. Loggerhead sea turtles are drowning in bottom-set gillnets, unable to escape from the nets once entangled. The issue has even raises threats of trade embargoes from the U.S.
Heavy metal shark meat: dangerous lead levels found in sharks used as fish food
(03/18/2013) A recent study published in mongabay.com’s open access journal Tropical Conservation Science raises concerns about levels of heavy metals, particularly lead (Pb), present in shark meat, as well as the decline of shark abundance due to global fishing pressures. Sharks are primarily caught as by-catch for other fishing industries. By one account, 70% of the total catch in swordfish long-line fisheries was sharks. Due to consumer demand, this by-catch is sold to Asian fish markets as fin and trunk meat. Much of the trunk and organ meat is used to make fish-meal, which is then fed to farmed fish.
Above the ocean: saving the world's most threatened birds
(11/01/2012) A life on the ocean is a perilous one for any bird. They must expend energy staying aloft for thousands of miles and learn to be marathon swimmers; they must seek food beneath treacherous waves and brave the world's most extreme climates; they must navigate the perils both of an unforgiving sea and far-flung islands. Yet seabirds, which includes 346 global species that depend on marine ecosystems, have evolved numerous strategies and complex life histories to deal with the challenges of the sea successfully, and they have been doing so since the dinosaur’s last stand. Today, despite such a track record, no other bird family is more threatened; yet it's not the wild, unpredictable sea that endangers them, but pervasive human impacts.
Maui's dolphins still in danger of extinction despite New Zealand's protective measures
(08/07/2012) The New Zealand government's recent efforts to protect the world’s smallest dolphin have come under scrutiny from various conservation organizations at the 64th meeting of the International Whaling Commission (IWC). There are only 55 Maui dolphins (Cephalorhynchus hectori maui) now found on the west coast of New Zealand’s North Island, less than half the 2005 population with numbers continuing to decline. Less than 20 of the remaining Maui’s are breeding females and their slow reproductive rates make it difficult to increase their numbers when faced with an even bigger danger: fishing nets.
Whole Foods bans 'red' fish from its stores
(04/10/2012) Whole Foods has announced it will be the first grocery chain in the U.S. to no longer sell any seafood in the "red." Based on sustainability ratings by the Monterey Bay Aquarium and Blue Ocean Institute, fish labeled red are those that are considered either overfished or fished in a manner that impacts other species or damages marine ecosystems. Beginning Earth Day, April 22nd, Whole Foods will no longer be selling Atlantic halibut, grey sole, skate, octopus, tautog, sturgeon, among others. Already, the store doesn't sell some unsustainable catches such as bluefin tuna and orange roughy.
World's smallest dolphin: only 55 left, but continue to drown in nets
(03/22/2012) The world's smallest dolphin is also the closest to extinction. New Zealand government figures show that Maui's dolphin (Cephalorhynchus hectori maui) are down to just 55 mature individuals, falling from 111 in 2005. The small cetaceans, measuring up to 1.7 meters (5.5 feet), are imperiled due to drowning in gillnets with the most recent death by a fisherman's net occurring in January.
Sawfish impale, cleave prey with snout
(03/05/2012) Although all seven species of sawfish are nearly extinct, scientists have spent little time studying these vanishing species. However that is changing as a new study in Current Biology sheds light on the sawfishes' most distinguishing feature: its long toothed snout, which gives the fish its name. "I was surprised to see how skilled sawfish are with their saw," said co-author Barbara Wueringer of the University of Queensland in a press release. "They use their saw to impale prey on the rostral teeth by producing several lateral swipes per second."
New sanctuaries declared for Asia's freshwater dolphins
(02/15/2012) Bangladesh has declared three new sanctuaries to help protect the south Asian river dolphin (Platanista gangetica) in the Sundarbans, the world's largest mangrove forest. Split into two subspecies, the Ganges River dolphin (Platanista gangetica gangetica) and the Irrawaddy River dolphin (Platanista gangetica minor), the new sanctuaries will benefit both. Listed as Endangered by the IUCN Red List, the south Asian freshwater dolphin has disappeared from much of its habitat. Already Asia has its other freshwater dolphin species: the baiji (Lipotes vexillifer) was declared functionally extinct into 2006 after a survey of the Yangtze River failed to find a single individual.
Atlantic sturgeon gains protection under the Endangered Species Act
(02/01/2012) The U.S. federal government has listed the massive and bizarre Atlantic sturgeon (Acipenser oxyrinchus) under the protection of the Endangered Species Act (ESA). Historically overfishing decimated the Atlantic sturgeon, while on-going threats include pollution and infrastructure, like dams and bridges that destroy habitat. Fishing for the Atlantic sturgeon has been banned since 1998, they are still caught as bycatch.
Featured video: tuna industry bycatch includes sea turtles, dolphins, whales
(01/16/2012) A Greenpeace video, using footage from a whistleblower, shows disturbing images of the tuna industry operating in the unregulated waters of the Pacific Ocean. Using fish aggregation devices (FADs) and purse seine nets, the industry is not only able to catch entire schools of tuna, including juvenile, but also whatever else is in the area of the net.
Cute animal picture of the day: pygmy killer whale saved after stranding
(01/12/2012) On Tuesday a female pygmy killer whale (Feresa attenuata) was found stranded on Tanjung Aru beach, in the Malaysian state of Sabah on the island of Borneo. After being moved to a swimming enclosure at a local resort for recuperation, the whale was released back into the wild with aid from the Sabah Wildlife Department, marine biologist Lindsay Porter, the local NGO LEAP, and WWF Malaysia.
Bycatch-reducing fish trap wins $20,000
(01/11/2012) An innovative fish trap that allows small non-target fish to escape won a new content by RARE Conservation and National Geographic to fund solutions to overfishing. Developed through studies in Curaçao and Kenya with the Wildlife Conservation Society, the trap has gaps for juvenile fish to swim out of reportedly reducing bycatch by 80 percent. The entry won a $20,000 grant.
Picture of the day: Ocean in Focus photo contest winner
(11/22/2011) A photo of a shark with a rusting hook in its maw is the grand prize winner of the Ocean in Focus photo contest, which seeks to raise awareness for conservation issues in the oceans.
Sowing the seeds to save the Patagonian Sea
(09/07/2011) With wild waters and shores, the Patagonia Sea is home to a great menagerie of marine animals: from penguins to elephants seals, albatrosses to squid, and sea lions to southern right whales. The sea lies at crossroads between more northern latitudes and the cold bitter water of the Southern Ocean, which surround Antarctica. However the region is also a heavy fishing ground, putting pressure on a number of species and imperiling the very ecosystem that supplies the industry. Conservation efforts, spearheaded by marine conservationist Claudio Campagna and colleagues with the Wildlife Conservation Society (WCS), are in the early stages. Campagna, who often writes about the importance of language in the fight for preservation, has pushed to rename the area to focus on its stunning wildlife.
Honduras protects sharks in all its waters
(06/26/2011) Endangered sharks are finding more sanctuaries. Honduras has announced that commercial shark fishing will be banned from its 92,665 square miles (240,000 square kilometers) of national waters. Honduras says the ban, which follows a moratorium on shark fishing, will bring in tourism revenue and preserve the marine environment.
Longline fishing still drowning over a quarter million seabirds every year
(06/08/2011) A new analysis estimates that longline fisheries are still decimating seabirds, even after years of efforts to mitigate deaths. According to a study in Endangered Species Research around 300,000 seabirds are drowned by longline fisheries as bycatch. Attracted by bait on the longline—sometimes measuring hundreds of miles as it trails on the surface behind a boat—birds are often hooked and drowned.
Scientists follow rise of mercury pollution in seabird feathers
(04/18/2011) Analyzing the feathers of the black-footed albatross (Phoebastria nigripes) going back to 1880. researchers have uncovered rising levels of the toxic methylmercury in the endangered birds that is generally consistent with rising mercury emissions in the Pacific region. Methylmercury is a more toxic compound than mercury that binds with organic molecules when it is released through industrial processes, such as burning coal and other fossil fuels.
Mitsubishi and Walmart agree to clean up fish sourcing practices
(03/09/2011) Two big players in seafood today announced that they are changing the way their fish are caught. Mitsubishi, which owns the UK's most popular brand for tuna in a tin, Princes, and Walmart, which owns Asda, have agreed to stop buying from fishermen who use purse seines fishing in conjunction with fish aggregating devices (FADs) by 2014. These methods have been blamed in part for the vast overfishing of the world's tuna and helping to decimate other species, such as sharks and rays, as bycatch.
Sustainably certified fishery kills over 250 fur seals in one season
(11/10/2010) The New Zealand Ministry of Fisheries estimates that from 2007-2008, 273 New Zealand fur seals (Arctocephalus forsteri) were killed by offshore trawling hoki fisheries, an increase of over 75 seals since the previous year. New Zealand's hoki fishery has been certified as sustainable by the Marine Stewardship Council since 2001 and re-certified in 2007. Hoki is commonly used for ubiquitous fried fish sandwiches, such as those served at McDonald's.
Island nation announces Ukraine-sized sanctuary for whales and dolphins
(10/24/2010) Dolphins, whales, and dugongs will be safe from hunting in the waters surrounding the Pacific nation of Palau. At the Convention on Biological Diversity (CBD) in Nagoya, Japan, Palau's Minister of the Environment, Natural Resources and Tourism, Harry Fritz, announced the establishment of a marine mammal sanctuary covering over 230,000 square miles (60,000 square kilometers) of the nation's waters, an area the size of Mongolia.
Photos: ants take top prize at Veolia Wildlife Environment Photography contest
(10/21/2010) An image of nocturnal ant silhouettes systematically devouring a leaf in Costa Rica has given Hungarian photographer, Bence Máté, the much-coveted Veolia Wildlife Environment Photographer of the Year award. In addition to being named Photographer of the year, Máté also won the Erik Hosking award, given to a young photographer (ages 18-26) for a portfolio of images, for images taken in Costa Rica, Brazil, and Hungary.
'No hope now remains' for the Alaotra grebe
(05/31/2010) World governments have missed their goal of stemming biodiversity loss by this year, instead biodiversity loss has worsened according to scientists and policy-makers, and a little rusty-colored bird, the Alaotra grebe (Tachybaptus rufolavatus) is perhaps a victim of this failure to prioritize biodiversity conservation. Native to a small region in Madagascar, the grebe has been declared extinct by BirdLife International and the IUCN Red List due to several factors including the introduction of invasive carnivorous fish and the use of nylon gill-nets by local fishermen, which now cover much of the bird's habitat, and are thought to have drowned diving grebes. The bird was also poached for food.
New report finds millions of marine turtles killed by fisheries, not thousands
(04/06/2010) Humankind's appetite for seafood has had a bigger impact on the world's marine turtles than long thought. A new report by Conservation International (CI) in partnership with Duke University’s Project GloBAL (Global By-catch Assessment of Long-lived Species) finds that in the past eighteen years it is likely millions of marine turtles have been killed as bycatch by the world's fisheries.
UN to protect seven migratory sharks, but Australia opts out
(02/17/2010) One hundred and thirteen countries have signed on to an agreement to protect seven migratory sharks currently threatened with extinction byway of the Convention on the Conservation of Migratory Species of Wild Animals (CMS), according to the UN Environment Program (UNEP). The agreement prohibits hunting, fishing, or deliberate killing of the great white shark, basking shark, whale shark, porbeagle shark, spiny dogfish, as well as the shortfin and longfin mako sharks. However, Australia has declared it will ignore certain protections.
Expedition to photograph world's rarest cetacean threatened by lack of funding
(02/11/2010) Little known beyond the waters of the Gulf of California, the world's smallest cetacean (a group including whales, dolphins, and porpoises) is hanging on by a thread. The vaquita—which in Spanish means 'little cow'—has recently gained the dubious distinction of not only being the world's smallest cetacean, but the also the world's rarest. In 2006 it was announced that the Yangtze river dolphin, or baiji, was likely extinct, and conservationists fear the Critically Endangered 'little cow' is next. An expedition for this year is set to identify vaquita individuals, but even this is threatened by lack of funding.
86 percent of dolphins and whales threatened by fishing nets
(02/07/2010) A new report from the United Nations Environment Program (UNEP) finds that almost 9 out of 10 toothed whales—including dolphins and porpoises—are threatened by entanglement and subsequent drowning from large-scale fishing operations equipment, such as gillnets, traps, longlines, and trawls. These operations threaten the highest percentage (86 percent) of the world's toothed whales.
Photos: Gelatinous Blobfish in danger
(01/26/2010) A species dubbed "the world's most miserable-looking fish" is at risk of extinction due to poor fishing practices, reports The Daily Telegraph.
California's great white sharks are a distinct population
(11/04/2009) Researchers have long thought that white sharks migrated across oceans, but a new study in the Proceedings of the Royal Society B shows that the population in the northeastern Pacific Ocean, along California, hasn't mixed with other white sharks for tens of thousands of years.
Over 30 percent of open ocean sharks and rays face extinction
(06/25/2009) The first global study of open ocean (pelagic) sharks and rays found that 32 percent of the species are threatened with extinction largely due to overfishing and bycatch, making pelagic sharks and rays more threatened than birds (12 percent), mammals (20 percent), and even amphibians (31 percent), which are considered to be undergoing an extinction crisis. The situation worsens when only sharks taken in high-seas fisheries are considered: 52 percent of these species are threatened.
Thousands of endangered sea turtles killed as fishing bycatch in Mexico
(10/15/2008) Thousands of endangered loggerhead sea turtles are being killed as bycatch in the Mexican fishing industry, reports a new study published in the journal Endangered Species Research.
20 waterbirds added to threatened list
(10/02/2008) The U.N. has added 20 species of migratory waterbird to the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) giving them greater international protection in Africa, Europe, and Asia.
Shark-repelling fishing gear in the works
(04/23/2008) Fishing gear that produces an electric field in sea water could help prevent sharks from becoming accidental bycatch, say scientists at NOAA.
Digital maps and mathematical analysis could reduce fishing bycatch
(02/16/2008) Images of dolphins and turtles ensnared in tuna nets are a heart-wrenching reminder of the impact of fisheries on ocean bio-diversity. Known in fisheries science as ‘by-catch,' this killing of non-target species is a complex problem that has resisted easy answers.
Vulnerable Australian sea lions further threatened by gillnets and lobster pots
(11/26/2007) The Australian Sea Lion inhabits only the coastal waters off south and west Australia. Historically, they were hunted almost to extinction by Europeans of the 18th and 19th centuries for their fur and oil. Beginning in 1895, certain populations of the marine mammal were placed under protection until the species gained national protection in 1975. These protections have yet to achieve their goal; Australian Sea Lion populations remain low with some subpopulations in decline. Due to these facts, Australia recently changed their conservation status to 'threatened'.
Only 150 vaquita remain
(11/19/2007) Only 150 individual vaquita, the world's smallest cetacean, remain, according to a new study published in conservation Biology. The species has been decimated as accidental bycatch in fishing nets in its Gulf of California habitat. Researchers--who say there may be only a two-year window to save the species from extinction--have launched a last-ditch conservation effort.
Mexican fishing villages work to change practices to preserve loggerhead turtles
(10/17/2007) Industrial fishing operations take plenty of blame for both depleting fish stocks and inadvertently catching innocent bystanders such as dolphins, sharks, seabirds, and sea turtles--a phenomenon known as "bycatch.".