Category Archives: Marine Science

Narragansett Bay – Invasive Asian Crab Outcompeting Young Lobsters

Speculation about the cause of the decline of lobster populations in Narragansett Bay has focused on an increasing number of predatory fish eating young lobsters, warming waters stressing juveniles, and a disease on their shells that is exacerbated by increasing temperatures. A new study by a scientist at the University of North Carolina points to another contributing factor: Asian shore crabs.,,, Adult lobsters live in much deeper water than the shallow intertidal zone inhabited by Asian shore crabs, so the two species seldom interact. But some larval lobsters settle in the intertidal and subtidal zones, which they use as nursery habitat. Prior to the arrival of Asian shore crabs, it was an area that had fewer predators and an abundance of food. But now the young lobsters are finding themselves in competition with the crabs for food and shelter. >click to read<09:25

Once in a blue moon: Crabber catches rare all-blue blue crab

Jim McInteer and his crew mate Alan Payne knew they had captured an oddity the moment they pulled their crab pot from the York River last Tuesday. “We were excited about it,” says McInteer. “Alan yelled, ‘Come look at this crab!’ He very carefully took him out of the pot and then I could see exactly what it was — I’d read about how they occur every now and then, so we knew what we had.” McInteer, who at 73 has been crabbing commercially for 10 years and recreationally for decades, says he’s caught blue crabs “with blotches of white, and some other slight discolorations, but never a solid-blue blue crab.”Recognizing its rarity, they donated it to the laboratory of Professor Rom Lipcius, an expert in crustacean ecology at William & Mary’s Virginia Institute of Marine Science. >click to read<16:19

10-foot white shark accidentally caught off Massachusetts coast – Utilized for Science

The Atlantic White Shark Conservancy shared photos of a white shark, described as a 10-foot, 657-pound immature female, that was captured unintentionally on Saturday. The animal was caught and killed by a gill net, or a fishing device that hangs vertically to capture and trap fish by their gills. The shark was brought back to Scituate where scientists from the Massachusetts Division of Marine Fisheries and NOAA New England could take samples for research purposes. An online report from “Massachusetts Sharks” said researchers found the remains of seal and a striped bass in the shark’s stomach. >click to read<17:20

Undersea Power Cables – Electromagnetic fields have complex and possibly harmful effects on the valuable brown crab.

Over the past 10 years, Scotland has installed thousands of offshore wind turbines in the North Sea and is starting to deploy marine energy devices that generate power from tides and waves. It’s a green energy push that is slowly being replicated in coastal areas the world over. Though these installations are reducing coastal threats such as oil spills, they have the potential to cause other, more subtle, problems for marine life. From each offshore wind and tidal turbine, power cables snake to shore, connecting to power banks, converters, and the wider electrical grid. But these electrified cables could have odd and unexpected effects on seafloor life. >click to read<08:43

Whale News – Rare right whale last seen in Cape Cod Bay spotted in Iceland, Southern resident Orca calf dies soon after birth

A right whale last seen off Marshfield has turned up in Iceland. An Icelandic whale watch tour spotted the critically endangered mammal on Monday. Mogul, the 10-year-old male North Atlantic right whale, was last seen in Cape Cod Bay April 21. >click to readMogul the right whale’s appearance off Iceland puzzles scientist >click to read< Meanwhile, The first calf born in three years to the endangered orcas that spend time in Pacific Northwest waters died Tuesday – >click to read< Alexandra Morton Press release – Baby Orca death could be linked to salmon farm virus >click to readNOAA prioritizing West Coast Chinook salmon stocks for Southern Resident killer whale recovery >click to read<09:27

Bay lobster aquaculture developed in Tasmania

The Institute for Marine and Antarctic Studies (IMAS), under the University of Tasmania, has paved the way for the bay lobster (Thenus oriental) aquaculture industry in Tasmania, after developing a unique method to breed the resource commercially. Based at IMAS’s Taroona laboratories, the ARC Research Hub for Commercial Development of Rock Lobster Culture Systems began researching hatchery techniques for the resource, better known as Moreton Bay Bugs, in September 2017. The starting point for this project was the technique developed for the tropical rock lobster, of the Panulirus family. >click to read<15:24

The impossible journey of the juvenile coho

As a Ph.D. student with the University of Washington’s Alaska Salmon Program, Jonny Armstrong — now assistant professor at Oregon State University’s Fish and Wildlife Department — snorkeled the Wood River in the Bristol Bay watershed. He soon encountered a mystery: juvenile coho as much as a mile from the nearest sockeye spawning ground had sockeye eggs in their stomachs. Sockeye lay their eggs in cold water, where there’s lots of oxygen. A juvenile coho, however, doesn’t best digest sockeye eggs in that water — cold slows its digestion, meaning if it stayed there, it might need a week to process just one meal. >click to read<22:38

Cocaine in the Water Is Hurting River Eels

The Earth’s waters are laced with drugs—from prescription and over-the counter medications, to caffeine, to antibiotics from personal care products. Marine environments are also tainted with illegal drugs, and a recent study demonstrates just how harmful these illicit substances can be to aquatic wildlife. As Michael Marshall reports for New Scientist, researchers in Italy have found that small amounts of cocaine in water can make eels hyperactive and cause significant muscle damage. >click to read<16:41

Dead plankton, stunned fish: the harms of man-made ocean noise

Human-caused ocean noise and its dangers to marine life are the focus of meetings at the United Nations this week, a victory for advocacy groups that have long warned of this problem. What are the causes of ocean noise? The main human activity that causes noise is maritime shipping. Among the loudest sounds are explosions aimed at demolishing offshore oil platforms, though these events are rare. Advocacy groups focus on seismic airguns, which are used by oil and gas interests to find reserves on the ocean floor. A boat tows 12-48 airguns at a time, each of which shoot loud blasts of compressed air.  >click to read<15:27

Giant great white ate its cousin during Sandbridge research expedition

When a Virginia Institute of Marine Science longline fishing survey caught a black tip shark on Friday, a much larger white shark couldn’t turn down an easy meal. Researchers just three and a half miles off Sandbridge were reeling in their 1.2-mile longline, equipped with 100 baited hooks, last week when a 12- to 13-foot great white showed up to see what all the fuss was about.,,VIMS began studying sharks in the mid-Atlantic in 1973 with its Shark Survey. It’s one of the longest running studies of shark populations in the world. The survey has shown a serious decline in shark numbers because of overfishing. That discovery led to the first shark management plan by NOAA Fisheries in 1993. >click to read<12:28

Three New Species Of Warm-Blooded Fish Discovered

Scientists have found three more species of a fish that – despite what we are taught at school – are fully warm-blooded. The species in question are large deep-sea fish known as opah, and are found in many oceans around the planet. A few years ago, the opah made headlines when it was revealed to be the first fully warm-blooded fish species ever discovered. Living in the frigid waters of the deep ocean, it warms its blood by continuously flapping its fins to generate heat. This keeps the fish’s core temperature at about 4 to 5°C (7.2-9°F) >click to read<16:22

23year Old Lady Born Without Vagina Has One Made Out Of Fish Skin (Photos)

A 23-year-old university student who was born without a vagina, has become the first in the world to undergo pioneering surgery that constructed a new vaginal canal out of fish skin. According to Mirror, the operation took place at the Federal University of Ceara (UFC), Brazil. The girl was diagnosed in her teens with having no cervix, uterus, ovaries or womb. Jucilene Marinho has now spoken for the first time and talked about how the revolutionary operation using skin of the tilapia fish has changed her life and allowed her to have sex for the first time. >click to read<11:43

Don Cuddy: Mattapoisett company moving fishing tech forward

Sometimes a chat over a fence is all it takes to set great things in motion. Fairhaven resident Karl Edminster was talking with his neighbor, marine researcher Emily Keiley, when she mentioned that SMAST had an underwater cable that had suffered damage on a fisheries survey cruise. She knew Karl’s job had something to do with electrical work. He said he’d take a look. In fact, Karl is the president of Elecrtromechanica, a high tech design and build engineering outfit based in Mattapoisett. They spliced the cable. “But we told them we do more than fix cables,” >click to read<15:04

Lost Crab Pots: Not as Bad as We Thought?

Back in 2016, a team of scientists from the Virginia Institute of Marine Science said watermen lost an astounding number—145,000 crab pots, leading to the deaths of millions of dollars’ worth of crabs trapped in those pots. But a different panel of scientists says it’s not as bad as they originally thought. Glenn Davis, who chairs the Chesapeake Bay Stock Assessment Committee, told a winter meeting of fisheries managers that the VIMS numbers are wrong.,,, But once the VIMS study was out there, it was hard to take back. And sure enough, somebody tried to monetize it.>click to read<09:05

Estimating similarity in benthic communities over decades and in areas open and closed to fishing in the central Gulf of Maine

ABSTRACT: The ledges and banks of the central Gulf of Maine (i.e. Fippennies Ledge, Jeffreys Ledge, Cashes Ledge, and Platts Bank) have supported groundfish and Atlantic sea scallop fisheries for centuries. The benthic community of Fippennies Ledge was evaluated and compared during 2 time periods separated by more than 2 decades, the first based on a series of photographs collected during manned submersible dives conducted in 1986 and 1987 and the second using photographs collected during drop camera video surveys conducted in 2009 to 2014. >click to read<21:08

DFO stock assessment – Halibut and Haddock flourishing, cod struggling

Wild food fish populations off Atlantic Canada continue to confound scientists, with some species flourishing and others floundering. The latest examples are halibut and cod. The big flatfish is flourishing off Nova Scotia and Newfoundland, according to the latest stock assessment released by the Department of Fisheries and Oceans. However, another new DFO report shows cod stocks off southern Nova Scotia remain in dire shape.,,,Yellow flounder is another species that is struggling. >click to read< 14:56

Research models how deadly virus moves among Pacific salmon, trout

For the first time researchers studying a deadly virus modeled how it spreads to young trout and salmon in the waters of the Columbia River Basin, showing that migrating adult fish are the main source of exposure. The ecological modeling of the infectious hematopoietic necrosis virus, or IHNV, shows how it moves across the landscape over time, providing a crucial understanding for managers of hatchery programs attempting to protect juvenile salmon and trout. >click to read<15:24

‘Two guys are doing all of the work’: Orcas’ inbreeding may devastate the population

Just two male whales fathered more than half the calves born since 1990 in the population of southern-resident killer whales, a sign of inbreeding, scientists have learned. “It was a shocker to find out two guys are doing all of the work,” said Ken Balcomb, director of the Center for Whale Research and an author on a paper published this week in the peer-reviewed scientific journal Animal Conservation. The findings are based on a new genetic analysis of the whales that frequent Washington’s Salish Sea and Puget Sound. >click to read<20:15

Broken down coast guard ship delays spring science survey; DFO’s mismanagement borders on criminal negligence

The Federation of Independent Sea Harvesters of Newfoundland and Labrador (FISH-NL) says the delay of the 2018 multi-species survey in waters off the province because of a broken down science vessel is yet another example of Ottawa’s ongoing gross mismanagement of the fisheries. “Most commercial stocks off our province are in free fall, and the Government of Canada still can’t get the baseline science right,” says Ryan Cleary, President of FISH-NL. >click to read<12:53

Pacific salmon ‘more abundant than ever’, new study claims

Pacific salmon are generally “more abundant than ever.” That is the provocative conclusion of a new paper published in Marine and Coastal Fisheries by Greg Ruggerone of Seattle’s Natural Resources Consultants and James Irvine of the Department of Fisheries and Oceans. The study used historical commercial catch and escapement data for the entire Pacific region for both wild and commercial hatchery salmon over a 90-year period, up to 2015. There is one caveat, however: Ruggerone and Irvine analyzed only data for pink, chum and sockeye salmon. >click to read<09:13

Puget Sound salmon do drugs, which may hurt their survival

Anti-depressants. Diabetes drugs. High-blood-pressure medication. Puget Sound chinook are doing our drugs, and it may be hurting them, new research shows. The metabolic disturbance evident in the fish from human drugs was severe enough that it may result not only in failure to thrive but early mortality and an inability to compete for food and habitat. The research built on earlier work, published in 2016, that showed juvenile Puget Sound chinook and Pacific staghorn sculpin are packing drugs including Prozac, Advil, Benadryl, and Lipitor among dozens of other drugs present in tainted wastewater discharge. >click to read<12:50

Japanese Whaling Fleet Reaches Quota

Japan’s whaling fleet has returned home from the Southern Ocean after a successful 143-day investigation “without being interfered with by the anti-whaling group.” Of the 333 whales killed, 152 were males and 181 were females. A preliminary analysis of pregnancy rate suggests healthy fertility rates, says the Japanese Institute of Cetacean Research. The animals’ earwax plugs and eye lens were used to determine age, blubber was used to determine nutritional status, gonads were used to obtain breeding information and digestive system contents used to examine prey species. >click to read<21:34

“Marine skin” wearable technology tracks underwater creatures

Wearables are normally connected devices like smartwatches or shirts that people wear. Researchers are expanding wearables to cover underwater creatures as well with a new wearable sensor that could help track whale sharks and dolphins in the future. The crab you see here was one of the first test subjects for a new lightweight sensor tag that could track animal movement in deep ocean environments. The sensor is dubbed “Marine Skin” and is designed to be glued to the outer shell or skin of an animal. >click to read<11:42

Russell Wangersky: Fish science still taking a backseat

In science, it’s critically important to compare apples to apples. If you’re looking at comparing data sets, you have to know that you’re using the same comparative parameters, and that all parts of the equation are the same. But that might not be the case for a critical fishery survey being done off Nova Scotia. The coast guard vessel Alfred Needler can’t do the survey, because it’s laid up in the St. John’s shipyard undergoing refit — a refit that has had to be extended after additional work  was added. The Teleost, which normally would have done the work if the Needler couldn’t do the five-week trawl survey, is also laid up, and is also behind schedule. >click to read<17:44

Aging coast guard ships stuck in refits put crucial Georges Bank fisheries survey at risk

Once again, Canada’s fleet of coast guard vessels is showing its age. A federal fisheries science survey on Georges Bank is delayed this winter because the Canadian Coast Guard vessel normally tasked with the job is out of commission on an extended refit, CBC News has learned. And a second coast guard ship expected to take over the job is also unavailable because it, too, is undergoing a refit that had to be extended. The five-week Department of Fisheries and Oceans survey off southern Nova Scotia usually starts mid-February aboard the Canadian Coast Guard Ship Alfred Needler, but the 36-year-old vessel is high and dry these days in a St. John’s shipyard. >click to read< 09:40

The phytoplankton decline, is there anything to it?

We have been told that the phytoplankton population is declining rapidly around the world and, of course, the cause is climate change. Phytoplankton is the base of the ocean food chain and it accounts for about half of global primary productivity or organic matter creation (Boyce, Lewis and Worm 2010). Phytoplankton is the major consumer of carbon dioxide, the dreaded demon trace gas, and the major producer of oxygen. So, first question, is the estimated decline in phytoplankton accurate, significant or unusual? Second question, if the decline is real, are the measurements long term enough to show it is not a natural occurrence? What is the natural variability and how do we know man-made climate change is to blame? Let’s investigate this. >click to read< 12:10

Fisheries scientist takes the spotlight in Fishing Heritage Center’s ‘A Day in the Life’ series

The New Bedford Fishing Heritage Center’s A Day in the Life speaker series continues tonight, March 15, with SMAST fisheries scientist Crista Bank. Beginning at 7 p.m., Bank will share her story and discuss the cooperative research she is currently conducting with the commercial fishing industry. Admission to A Day in the Life is free for Fishing Heritage Center members, and $5 for non-members. The Center is handicap accessible through the parking lot entrance. Free off-street parking available. >click to read<22:33

Ray Hilborn: New study provides no new information on global fishing footprint

University of Washington fisheries researcher Ray Hilborn said that a new study using satellite data from industrial fishing vessels to map global fishing effort fails to provide any new insight, despite media reports indicating otherwise. The study, published in Science in February, used messages transmitted between 2012 and 2016 from the automatic identification systems (AIS) of more than 70,000 industrial fishing vessels to create a global footprint, concluding that “industrial fishing occurs in over 55 percent of ocean area,” according to the abstract. But Hilborn said the vessels monitored for the study were in large part tuna boats over 100 feet, which have been monitored for decades. >click to read< 11:17

Remember when we were told “Penguins Don’t Migrate, they’re dying!” ? – never mind

WUWT readers may remember this story from last year, where Chris Turney, leader of the ill fated “ship of fools” Spirit of Mawson expedition that go stuck in Antarctic sea ice said: “Penguins Don’t Migrate, they’re dying!” and of course blamed the dreaded “climate change” as the reason. Of course three days later, Discover Magazine ran an article that suggested Turney was full of Penguin Poop. Well, seems there’s a surplus of Penguins now, in a place nobody thought to look, there’s an extra 1.5 million Penguins. From Woods Hole Oceanographic Institute. >click to read< 18:03

NMFS Weighing Privately Funded Assessment of Summer Flounder Stock

For the first time, the National Marine Fisheries Service (NMFS) will consider privately funded science in formulating regulations for summer flounder. Funded by the Save the Summer Flounder Fishery Fund (SSFFF) and its contributing partners, a groundbreaking sex-structured model created by Dr. Patrick Sullivan of Cornell University was presented in January to the NMFS’ Stock Assessment Workshop in the hope of obtaining a clearer picture of the summer flounder population. The ultimate goal is to improve the accuracy of the next stock assessment,,, >click to read< 23:14