Navigation Links
One-quarter of grouper species being fished to extinction

SAN FRANCISCO (May 9, 2012) Groupers, a family of fishes often found in coral reefs and prized for their quality of flesh, are facing critical threats to their survival. As part of the International Union for Conservation of Nature (IUCN) Species Survival Commission, a team of scientists has spent the past ten years assessing the status of 163 grouper species worldwide. They report that 20 species (12%) are at risk of extinction if current overfishing trends continue, and an additional 22 species (13%) are Near Threatened. These findings were published online on April 28 in the journal Fish and Fisheries.

"Fish are one of the last animal resources commercially harvested from the wild by humans, and groupers are among the most desirable fishes," said Dr. Luiz Rocha, Curator of Ichthyology at the California Academy of Sciences, and one of the paper's authors. "Unfortunately, the false perception that marine resources are infinite is still common in our society, and in order to preserve groupers and other marine resources we need to reverse this old mentality."

The team estimates that at least 90,000,000 groupers were captured in 2009. This represents more than 275,000 metric tonnes of fish, an increase of 25% from 1999, and 1600% greater than 1950 figures. The Caribbean Sea, coastal Brazil, and Southeast Asia are home to a disproportionately high number of the 20 Threatened grouper species. (A species is considered "Threatened" if it is Critically Endangered, Endangered, or Vulnerable under IUCN criteria.)

Groupers are among the highest priced market reef species (estimated to be a multi-billion dollar per year industry), are highly regarded for the quality of their flesh, and are often among the first reef fishes to be overexploited. Their disappearance from coral reefs could upset the ecological balance of these threatened ecosystems, since they are ubiquitous predators and may play a large role in controlling the abundance of animals farther down the food chain.

Unfortunately, groupers take many years (typically 5-10) to become sexually mature, making them vulnerable for a relatively long time before they can reproduce and replenish their populations. In addition, fisheries have exploited their natural behavior of gathering in great numbers during the breeding season. The scientists also conclude that grouper farming (mariculture) has not mitigated overfishing in the wild.

Although the prognosis is poor for the restoration and successful conservation of Threatened grouper species, the authors do recommend some courses of action, including optimizing the size and location of Marine Protected Areas, minimum size limits for individual fish, quotas on the amount of catch, limits on the number of fishers, and seasonal protection during the breeding season. However, the scientists stress that "community awareness and acceptance, and effective enforcement are paramount" for successful implementation, as well as "action at the consumer end of the supply chain by empowering customers to make better seafood choices."


Contact: Andrew Ng
California Academy of Sciences

Related biology news :

1. FSU biologists fish for reasons behind endangered groupers comeback
2. New study reveals red grouper to be Frank Lloyd Wrights of the sea
3. 24 new species of lizards discovered on Caribbean islands are close to extinction
4. Genetic markers for tracking species
5. Weeding out invasive species with classical biological control
6. Head and body lice appear to be the same species, genetic study finds
7. Ancient whale species sheds new light on its modern relatives
8. Plant DNA speaks English, identifies new species
9. A new pipewort species from a unique, but fragile habitat in India
10. European grasslands challenge rainforests as the most species-rich spaces on Earth
11. Hiding in plain sight, new frog species found in New York City
Post Your Comments:
Related Image:
One-quarter of grouper species being fished to extinction
(Date:11/19/2015)... 2015  Based on its in-depth analysis of the ... with the 2015 Global Frost & Sullivan Award for ... presents this award to the company that has developed ... of the market it serves. The award recognizes the ... on customer base demands, the overall impact it has ...
(Date:11/18/2015)... 18, 2015  As new scientific discoveries deepen our ... other healthcare providers face challenges in better using that ... In addition, as more children continue to survive pediatric ... and old age. John M. Maris, M.D ... of Philadelphia (CHOP) . --> John ...
(Date:11/17/2015)... 17, 2015 Paris from ... --> Paris from 17 th until ... biometrics innovation leader, has invented the first combined scanner in ... same scanning surface. Until now two different scanners were required: ... can capture both on the same surface. This innovation ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... Md. , Nov. 25, 2015  PharmAthene, Inc. ... Directors has adopted a stockholder rights plan (Rights Plan) ... net operating loss carryforwards (NOLs) under Section 382 of ... --> PharmAthene,s use of its NOLs ... "ownership change" as defined in Section 382 of the ...
(Date:11/25/2015)... 2015 Studies reveal the differences ... and pave the way for more effective treatment for one ...   --> --> ... problems in cats, yet relatively little was understood about the ... have been conducted by researchers from the WALTHAM Centre for ...
(Date:11/25/2015)... -- Neurocrine Biosciences, Inc. (Nasdaq: NBIX ) announced today ... Neurocrine Biosciences, will be presenting at the 27th Annual ... . .   Listeners ... prior to the presentation to download or install any ... available on the website approximately one hour after the ...
(Date:11/25/2015)... ... November 25, 2015 , ... A long-standing partnership ... Professionals (OPBAP) has been formalized with the signing of a Memorandum of Understanding. ... OPBAP leaders Capt. Karl Minter and Capt. Albert Glenn Tuesday, November 24, 2015, ...
Breaking Biology Technology: