Posts Tagged ‘fish’

‘Disgraceful’ Conservation Group Accused Of Pushing Tuna Towards Extinction

Tuesday, November 25th, 2008

Bluefin tuna is at risk of extinction following ICCATs decision to ignore advice from its own scientists.

Tuna is at risk of extinction following ICCAT's decision to ignore advice from its own scientists, say conservation groups.

A decision by an international organization charged with protecting tuna has been slammed by conservation groups for doing the exact opposite.

The International Commission for the Conservation of Atlantic Tunas (ICCAT), a fishery organization responsible for the conservation of tunas and tuna-like species, recently implemented a catch quota as much as 60% higher than its own scientists had recommended.

ICCAT’s own scientists had recommended a total allowable catch (TAC) of 8,500 to 15,000 tonnes per year. ICCAT ignored this advice and opted for a TAC of 22,000 for 2009.

The catch quota essentially places a restriction on how much the tuna industry is allowed to catch. Without a strict quota, tuna, known for fetching high prices, would almost certainly become extinct.

Obviously, the extinction of tuna would lead to the collapse of the tuna industry so, any ICCAT decision has a direct impact on the future of tuna fisheries, as well as the survival of the species itself.

Greenpeace’s Response

Greenpeace says ICCAT has lived up to it’s reputation as an “international disgrace” and has labelled the decision as “Shameless. Disastrous.” 

It says that this year’s annual meeting in Marrakech “looked more like a bazaar, in which buyers haggled over the last remaining tuna, than an international meeting”.

Greenpeace blames the decision on the European Union.

The European Union, representing the majority of Mediterranean countries with interests in the bluefin tuna fishery,  bullied other parties in the meeting into agreeing to management proposals which completely fail to follow the advice of ICCAT’s own scientific body to substantially reduce fishing and protect the species’ spawning grounds.

“The game is over – ICCAT has missed its last chance to save the bluefin tuna from stock collapse,” said Sebastian Losada, Greenpeace Spain Oceans Campaigner, who attended the Marrakech meeting. “Bluefin tuna has become an endangered species because of ICCAT mismanagement. It’s time to take the fishery out of their hands and look to Conventions like CITES to impose trade restrictions on the species.”

“These past seven days have demonstrated that ICCAT is a farce,” Losada concluded.

Further, Greenpeace has demanded a closure of the fishery until a proper recovery plan is in place. In particular, Greenpeace wants to see:

  • a Total Allowed Catch (TAC) in line with the scientific advice
  • a seasonal closure covering the months of May, June and July
  • the establishment of marine reserves to protect the bluefin tuna spawning grounds

WWF’s Response

WWF has labelled the decision “a disgrace”.

“This is not a decision, it is a disgrace which leaves WWF little choice but to look elsewhere to save this fishery from itself,” said Dr Sergi Tudela, head of WWF Mediterranean’s fisheries programme.

“Any alternative is preferable to an organization which boasts of its respect for science but where in a decade catches have gone from twice to four times the scientific recommendations, with massive legal and illegal overfishing. It is clear that the only thing to slow the fishery with ICCAT at the helm is running out of fish.”

As with Greenpeace, WWF has been pushing for a suspension in the tuna fishery. This option has also been endorsed by the recent World Conservation Congress and recommended by ICCAT’s own internal high-level review. 

WWF has also been pushing for more protection of bluefin tuna.

“WWF will also actively push for a listing under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) in the hope that stringent trade controls tied explicitly to the survival of the species will turn around the half-hearted attempt at fisheries management shown here by ICCAT and especially its European contingent.” says Dr Tudela.

An Ongoing Problem

This is not the first time ICCAT has ignored advice from its own scientists.

In 2006, ICCAT set a TAC of 29,500 tonnes, despite its own scientists recommending a sustainable limit of 15,000 tonnes. Since then, ICCAT’s scientists estimate that actual tuna catches in 2007 were 61,000 tonnes.

Following the concerns of the international community, ICCAT appointed a panel to conduct an independent review of ICCAT [PDF document].

The panel had the following to say about ICCAT’s performance:

  • Fundamentally ICCAT’s performance to date does not meet its objectives for several of the species under its purview.
  • ICCAT’s failure to meet its objectives is due in large part to the lack of compliance by many of its CPCs.
  • CPCs have consistently failed to provide timely and accurate data and to implement monitoring, control and surveillance (MCS) arrangements on nationals and national companies.
  • The judgement of the international community will be based largely on how ICCAT manages fisheries on bluefin tuna (BFT). ICCAT CPCs’ performance in managing fisheries on bluefin tuna particularly in the eastern Atlantic and Mediterranean Sea is widely regarded as an international disgrace and the international community which has entrusted the management of this iconic species to ICCAT deserve better performance from ICCAT than it has received to date.
  • There are concerns about transparency within ICCAT both in decision making and in resource allocation. 
  • Most of the problems and challenges ICCAT faces would be simple to fix if CPCs developed the political will to fully implement and adhere to the letter and spirit of the rules and recommendations of ICCAT.

The review found that ICCAT has failed to meet its objectives, but blames this on its members (CPCs).

A simple reading of the state of the stocks under ICCAT’s purview would suggest that ICCAT has failed in its mandate as a number of these key fish stocks are well below MSY. However, the Panel is of the view that rather than ICCAT failing in its mandate it is ICCAT that has been failed by its members (CPCs).

The review concluded that the members’ attitudes need to change.

…the problems of ICCAT would be readily fixed or considerably improved if CPCs changed their attitude towards implementation of and adherence to the rules and recommendations of ICCAT and the adoption of robust Monitoring, control and surveillance (MCS) processes.

New Catfish Species Aplenty

Monday, November 3rd, 2008

I read that between 2003 and 2005, over 100 new species of catfish were described, which was a record for new descriptions of catfish.

Well, that was 4 or 5 years ago. Fast forward to 2008 and it doesn’t look like much has changed. It seems that new species of catfish are cropping up everywhere.

For starters, here’s what Practical Fishkeeping reported over the last couple of weeks:

  • 3 new species of catfish on 20 October. The 3 species are:
  • Doras higuchii is named after Brazilian ichthyologist Horácio Higuchi in recognition of his work on thorny catfish sytematics
  • Doras phlyzakion, which is named after the abundant pores on the ventral surface of the body (from the Greek word meaning blister)
  • Doras zuanoni, which is named after Brazilian ichthyologist Jansen Zuanon for his contribution to Neotropical ichthyology and discovery of the new species
  • The description of Synodontis woleuensis was also reported on 20 October. This fish had previously been confused with another species - the Synodontis batesii. According to Aquatic Community, this catfish was named after the river Woleu and is known to be present in the Woleu/Mbini/Uoro and Ntem basins of Gabon and Equatorial Guinea in west central Africa.  
  • On 27 October, it reported another new species named Chrysichthys praecox, which is named after the small size at which it matures (from the Latin praecox, meaning early ripening or precocious)
  • Also on 27 October, Practical Fishkeeping reported the description of Synodontis ngouniensis, named after its type locality, the Ngounié River drainage, and is also known from the Nyanga River drainage (a smaller coastal river drainage south of the Ogooué River drainage in the Republic of Congo). 

And as if that’s not enough, according to All Catfish Species Inventory (ACSI), the latest edition of Neotropical Ichthyology contains descriptions of 30 new species and 2 new genera of catfishes.

I’d be interested to know how many species of catfish have been described over the past 2 years. It would be good to get a comparison with the 2005 - 2005 period. 

Giant Sea Creatures Found in Antarctic Sea

Saturday, March 22nd, 2008

Researchers have discovered giant marine life in the seas of the Antarctic.

The discovery was made during a 50 day voyage in the Ross Sea. New Zealand Marine Scientist, Don Robertson said that they found “Huge sea snails, jellyfish with tentacles up to four metres long and starfish the size of big food platters”.

The voyage, which covered 3,200 km, resulted in 30,000 specimens, making it the most comprehensive survey to date. Among the specimens, were about 90 different species of fish, eight of which could be a previously undiscovered species. There are at least eight new molluscs and a range of new invertebrates too. Analysis of all 30,000 specimens could take up to two years.

The survey covered all levels of the water, from the surface to the sea floor - 3,500 meters deep.

The survey is part of the International Polar Year program, which involves 23 countries and 10 other voyages around the Antarctic. The voyages will continue until July 2009.

Largest Natural Feature on Earth

Thursday, March 13th, 2008

Great Barrier ReefThe largest natural feature on earth is so large, that it can be seen from space!

Earth’s largest natural feature is the Great Barrier Reef.

The Great Barrier Reef is a massive collection of coral reefs located along the north eastern side of Australia. It is the world’s most extensive coral reef system and is one of the world’s richest areas in terms of faunal diversity.

The reef is part of the Great Barrier Reef World Heritage Area, which at 35 million hectares, is the world’s largest World Heritage Area. About 98 percent of the Great Barrier Reef World Heritage Area is located in the Great Barrier Reef Marine Park, which was declared in 1975 with the purpose of preserving the area’s outstanding biodiversity whilst providing for reasonable use.

Here are some interesting facts about the Great Barrier Reef:

  • There are more than 2900 coral reefs
  • 600 continental islands
  • 71 coral islands
  • 300 coral cays
  • 1500 species of fish
  • 4000 species of molluscs
  • 500 species of seaweed
  • 350 types of starfish and various echinoderms
  • More than 215 species of birds
  • 1.9 million tourists visit the Great Barrier Reef each year
  • The Great Barrier Reef is over 12,000 years old
  • The reef itself stretches more than 2300 km from the northern tip of Australia’s Queensland to just south of Bundaberg (also in the state of Queensland)
  • The Great Barrier Marine Park covers 348,000 square kilometers - that’s larger than the whole of the UK and Ireland combined!

The Great Barrier Reef is Under Threat

Unfortunately, the Great Barrier Reef is under threat from overfishing, land-based pollution and coral bleaching. Coral bleaching is exacerbated by increased sea temperatures due to global warming. As a result of public campaigning and pressure from WWF, the Australian Government has committed to protecting 33% of the reef where it can (previously, only 4% had been protected).

Regarding the impact of global warming on the reef, it’s not just affecting the Great Barrier Reef. To date, 10% of all reefs around the world have been destroyed due to coral bleaching. At the current rate, 70% of the world’s reefs will be destroyed over the next 40 years.

As hopeless as this may sound, there are things we can do to help. By developing greener habits, we can all do our part in reducing global warming. For example, here are 5 ways to reduce greenhouse gases. And here are some simple steps you can take to live sustainably.

Global Warming is resulting in Deaf Fish

Thursday, March 6th, 2008

New Scientist has just published an article regarding a study of fish living in the tropical waters of Australia. The study has found that there is an increasing number of fish being born deaf, with misshapen ear bones. This in turn, increases the likelihood that they will become lost and die.

Newly born reef fish tend to spend a few weeks out in the open seas before returning home. When they return home, it appears that they rely on sound to help guide them. The sounds include other sea creatures (such as sea urchins, shrimp, and other fish) as well as crashing waves in the distance. If they are deaf, they are less likely to be able to find their way back home.

In particular, Larval Ambon damselfish are more likely to be born deaf, with otolith asymmetry, if their parents are exposed to warmer, more acid seas. And this is exactly what’s happening around tropical waters such as Lizard Island and the Great Barrier Reef (where the study was undertaken). Increased acidification reduces the availability of calcium to be absorbed by fish to make bones.

However, Arthur Popper, director of the Aquatic Bioacoustics Laboratory at the University of Maryland, College Park, US points out that a direct link between otolith asymmetry and increased mortality hasn’t yet been proven. He also says that he’s not convinced that otolith asymmetry would affect a fish’s ability to locate a sound.

In any case, the study does demonstrate a strong link between warmer oceans and deaf fish - which is not a good thing.