Navigation Links
Long-lived deep-sea fishes imperiled by technology, overfishing

Many commercially prized fish from the depths of the world's oceans are severely threatened by over-fishing and the species' ability to recover is constrained by the fishes' long lifespans and low reproductive success, a panel of experts said today at the annual meeting of the American Association of the Advancement of Science. Some of the fish species living at depths greater than 500 meters take decades to reach breeding maturity, so there are no quick-fix remedies available to replenish the population, said Selina Heppell, a fisheries biologist from Oregon State University.

"The harvest of deep-sea fishes is a lot like the harvest of old-growth timber," Heppell said, "except we don't ‘replant' the fish. We have to depend on the fish to replenish themselves. And the habitat that used to provide them protection ?the deep ocean ?is now accessible to fishing because of new technologies."

Among the most recognized deep-sea species at-risk are orange roughy and Patagonian toothfish, better known as Chilean sea bass. In the deep ocean off the Pacific Northwest, sablefish ?also known as black cod ?are another depleted species. Deep-sea fishes grow slowly because of limited food sources and slower metabolisms and many don't reach sexual maturity for 30 to 40 years, Heppell said. The harvest of older fish may have an even greater impact on these threatened populations because older fish are more likely to breed successfully than younger fish.

"When you buy orange roughy at the store, you are probably purchasing a filet from a fish that is at least 50 years old," Heppell said. "Most people don't think of the implications of that. Perhaps we need a guideline that says we shouldn't eat fish that are as old as our grandmothers."

Most of the deep-sea fishes are in international waters, where there are no guidelines and protections ?unlike within United States territorial waters. Most of these fish are caught by deep trawlers near seamounts
'"/>

Source:Oregon State University


Page: 1 2 3

Related biology news :

1. Climatologists discover deep-sea secret
2. Sinkers provide missing piece in deep-sea puzzle
3. Some like it hot: Worms at deep-sea vents favor a fiery 45-55°C
4. Drug discovery team to explore newly discovered deep-sea reefs
5. Giant deep-sea tubeworms meal ticket comes in as a skin infection
6. Extraordinary life found around deep-sea gas seeps
7. Ocean seep mollusks may share evolutionary history with other deep-sea creatures
8. Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
9. Study fishes out new role for prostaglandins
10. Integration of Agilents MS technology, Proteome Systems software to help scientists in proteomics research
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Long lived deep sea fishes imperiled technology overfishing

(Date:6/25/2015)... 25, 2015 According to ... (Swipe & Area), Technology, Material (Optical Prism, Piezoelectric, ... Security & Others) & Geography - Global Forecast ... said market is expected to reach $14,500.07 Million ... Browse 76 market Tables and 109 ...
(Date:6/24/2015)... JOSE, Calif. , June 24, 2015 /PRNewswire/ ... developer of human interface solutions, today announced that ... sensor to provide secure authentication for its latest ... recently reached more than 200 million shipments of ... with Sharp reinforces Synaptics, strength, scalability and leadership ...
(Date:6/23/2015)... 2015   Valencell, a leader in ... a recent study that illustrates its PerformTek biometric ... activity. In a study conducted at Valencell,s Biometric ... the Apple Watch against a chest strap – ... activity. The study demonstrated that Valencell,s biometric technology ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3
... -- A microscopic gene may play a gigantic role when ... to one Kansas State University research team. The team ... Disintegrin and Metalloprotease family, or ADAM family, and its role ... is a good guy or a bad guy in breast ...
... UCLA researchers have taken mammalian genome maps, including human maps, one ... fall in the genome but which genes actually interact. ... journal Genome Research, will help researchers better understand which ... help cells thrive or die. Mammals, including ...
... This release is available in German . ... look for allies. This is why physicists from different scientific ... to place the fight against cancer through heat treatment by ... is the objective of the cooperation to improve the success ...
Cached Biology News:K-State research team investigates mutated gene's role in breast cancer 2UCLA scientists map all mammalian gene interactions 2UCLA scientists map all mammalian gene interactions 3How many nanoparticles heat the tumor? 2How many nanoparticles heat the tumor? 3
(Date:7/3/2015)... July 3, 2015 ... september 2015 på  http://www.openinnovationinscience.at till det ... Science" som hålls i Wien ... undersökning med internationella forskare och vetenskapsmän som ... hälsovetenskapens två största utmaningar bristen på incitament ...
(Date:7/2/2015)... ... ... used in countless labs for decades. In the past, people had to go to ... was a daunting and tiring process looking at endless data tables and charts. Often ... complex catalog structure. , Now thanks to FireflySci, scientists are throwing away those old books ...
(Date:7/2/2015)... ALTO, Calif. (PRWEB) , ... July 02, 2015 , ... ... to improve an individual’s quality of sleep, launched its Indiegogo campaign on June 23. ... functionality: Luzi's voice command technology makes it effortless to use, while the integration of ...
(Date:7/1/2015)... 1, 2015   Decision Resources Group ... of Otezla are its oral administration, alternative mechanism ... by surveyed rheumatologists. Otezla was the first oral ... of active psoriatic arthritis in the ... care includes conventional oral treatments including disease-modifying antirheumatic ...
Breaking Biology Technology:Lansering av världens första program för öppen innovation för att utbilda forskare 2Lansering av världens första program för öppen innovation för att utbilda forskare 3New Cuvette E-Commerce Website Launched by FireflySci 2Luzi Smart Lamp Recently Launched Indiegogo Campaign 2Luzi Smart Lamp Recently Launched Indiegogo Campaign 3Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 3
... provides software and services to the financial and health-benefits ... 13 percent to $1.1 billion. , ,Net income was ... company made in the first quarter of 2005 on ... first quarter included repurchasing 5.4 million shares of common ...
... three of the 35 Midwestern venture capital deals reported during ... alarmed. , ,A MoneyTree Report released this week ... during the quarter, compared to three Wisconsin companies with at ... venture capital, some view this as the continuation of an ...
... TDS, also the corporate parent of U.S. Cellular, said its revenues ... from last year that it had to restate due to accounting ... from $43.3 million in the same quarter a year ago. , ... results from as early as 2000 through 2005. The process delayed ...
Cached Biology Technology:Angel investing should lead to more venture funding, Ward says 2Angel investing should lead to more venture funding, Ward says 3
... The Digital Clamp One can operate as ... as a Conductance (Dynamic) Clamp in electrophysiology research ... as good as conventional analog equipment. This ... advances in the capabilities of Digital Signal Processing ...
The new Silencer siRNA Starter Kit is perfect for researchers new to RNAi. It provides all of the reagents, protocols, and instructions necessary to get underway with siRNA transfection and ensure su...
... focused on sequencing, analysis of proteins expressed ... of genomics and proteomics, EvoQuest ™ Custom ... research and manufacturing challenges. Invitrogen scientists provide ... from beginning to end in a timely, ...
... Research Scale (gram quantities of IgY) , After ... your Antigen), we segregate the appropriate number of ... 3 such eggs are collected (usually over a ... series. This involves a total of four injections ...
Biology Products: