Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Risk of Extinction Increases for Cod

11.05.2010
When John Cabot arrived on the shores of Newfoundland in 1497, the ship’s crew reported cod fish were so abundant that sailors could scoop them up with buckets. Even years later, English skippers wrote about cod shoals “so thick by the shore that we hardly have been able to row a boat through them.”

Plentiful catches are now the stuff of history books. The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) reports cod populations from the Arctic to the Bay of Fundy declining to perilously low levels—by 97 to 99 per cent since the 1960s.

The committee recommends to federal environment minister Jim Prentice that cod be listed as “endangered” on the legal list of species at risk.

Even with reduced catches since 1992, “cod are at such historically low levels that they have gone beyond their tipping point,” says Jeffrey Hutchings, the Dalhousie University biology professor who just stepped down as the chair of COSEWIC. “They may no longer be able to replace themselves in their ecosystem.”

Cod was designated by COSEWIC as a “special concern” in April 1998 with some populations deemed “threatened” or “endangered” by May 2003. But at that time, the government rejected COSEWIC’s recommendation to list the cod as endangered because of “socio-economic” concerns.

(A note about the terminology: species considered “special concern” are those particularly sensitive to human activities or natural events but are not endangered; “threatened” are species likely to become endangered if limiting conditions are not reversed; “endangered” are species facing imminent extinction or extirpation, missing from the wild.)

But Dr. Hutchings believes there may be a silver lining to COSEWIC’s report if the federal government accepts it this time. “Then a recovery strategy would have to be implemented by law,” he says.

“It’s old news that cod are in trouble. It’s been 18 years since the collapse of northern cod stocks,” he says. “The silver lining is if we get determined action by the federal government to make recovery targets, set timelines to achieve those targets and establish harvest control rules.”

The committee, which met last month to assess 51 species at risk, has now assessed 602 wildlife species in various risk categories, including 262 endangered, 151 threatened, 166 special concern, 23 extirpated (no longer found in the Canadian wild), and 13 wildlife species extinct.

With Dr. Hutchings stepping down, Marty Leonard, also a Dalhousie professor, assumes the chair for a two-year term.

Charles Crosby | Newswise Science News
Further information:
http://www.dal.ca

Further reports about: COSEWIC cod stock silver lining wildlife species

More articles from Ecology, The Environment and Conservation:

nachricht Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen

nachricht Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Smallest transistor worldwide switches current with a single atom in solid electrolyte

17.08.2018 | Physics and Astronomy

Robots as Tools and Partners in Rehabilitation

17.08.2018 | Information Technology

Climate Impact Research in Hannover: Small Plants against Large Waves

17.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>