Lionfish Invasion

Sharks “taught” to eat poisonous lionfish on Cuban reefs
IMAGE CREDIT: NATIONAL GEOGRAPHIC

HAVANA, Cuba, Tuesday September 30, 2014 – A Cuban diver has come up with a novel way of controlling rising numbers of invasive lionfish by feeding them to the sharks off the coast of the communist Caribbean country.

A venomous and voracious intruder, the IndoPacific lionfish poses a serious threat to coral reefs in the Caribbean, Florida, the Gulf of Mexico, Central America, and northern South America.

Beautiful but deadly, these fish have the potential to disrupt coral reef ecosystems as predators that out-compete most other species for food resources, yet have few known natural predators of their own to keep their numbers in check.

Cuban diver Andres Jiminez is nevertheless working on plans to level the playing field.

A demonstration of the courageous diver’s strategy was photographed by French marine biologist Mathieu Foulquie during a trip to Cuba’s popular tourist attraction the Gardens of the Queen National Marine Park.

“The pictures show the hunt for lionfish, and demonstrate how local guides are trying to control the invasive species by training sharks to eat them,” Foulquie told Britain’s Daily Mail.

“My diving instructor, Andres Jimenez, who is also a marine biologist, shot a lionfish with his pole spear and presented it to the Caribbean reef sharks swimming around us.

“One of the sharks swam directly towards him to catch the lionfish.

“The lionfish is an invasive species in the Caribbean, but native Caribbean predators like sharks, or grouper fish don’t eat them.

“If the sharks can be taught to consume them, however, they will naturally regulate them.”

At a depth of twenty-five-metres, Foulquie watched as Jiminez carefully caught the lionfish and fed it to the shark, an experiment which has been in practice since 2011, according to the Daily Mail.

The Frenchman nevertheless stressed the “Don’t try this at home” caveat.

“Only specialists in shark behaviour can try this kind of experiment, and ordinary divers and photographers should never try to feed them.

“From a scientific point of view, we don’t know how successful the project is. But, apparently, recent videos show native top predators are starting to eat lionfish without them being previously speared by divers,” Foulquie added.

A reduction in lionfish numbers is essential given that their diet consists of numerous shrimp, crabs, and other crustaceans, including juveniles of the commercially important spiny lobster. They are also responsible for great reductions in fish numbers on reefs where they become established, and prey on herbivorous fishes that consume macroalgae and help protect corals from algal overgrowth.

A critical issue in controlling their numbers is their huge reproductive potential and age of reproductive maturity, moreover.

National Oceanic and Atmospheric Administration (NOAA) researchers have determined that lionfish reach sexual maturity within two years and spawn multiple times during the spawning season, which may be year-round. Each spawn can produce up to 30,000 eggs.

Scientists believe that lionfish populations will continue to grow and are unlikely to be culled by conventional means.

Due to their fecundity, rapid and widespread distribution, adaptability to a variety of shallow and deep habitats, and behaviour, it is thought that the lionfish invasion places coral reef ecosystems throughout the Americas at significant risk.

Read more: http://www.caribbean360.com/news/sharks-taught-to-eat-poisonous-lionfish-on-cuban-reefs#ixzz3FB4281c7


Phillipe Cousteau Jr and his team investigate how the Atlantic Ocean has been invaded by the poisonous lionfish. A few years ago they didn’t exist in the Atlantic, but now they are decimating the local fish stocks and have been seen as far apart as Puerto Rico and New York. Watch more high quality videos on the BBC Worldwide YouTube channel here: http://www.youtube.com/bbcworldwide

“PROTECT OUR REEFS” LICENSE PLATE

Florida has the only barrier coral reef system in the continental U.S.  Coral reefs provide more then $1.2 billion dollars a year to Florida’s economy through tourism, recreational and commercial fisheries, and by protecting our shorelines by mitigating the effects of coastal erosion and storms.  Sadly, worldwide corals are in decline……….but research can help us understand why and what to do about it, and education and conservation efforts can help reduce human impact on these precious resources. 

HOW YOU CAN HELP

As a Florida driver, you can help make research, education and conservation happen. Drive the plate that helps fund research, education and conservation and you’ll be helping preserve Florida’s unique underwater beauty.

When you purchase this plate from your tax collector, $25 goes to support reef research, education and conservation.  And as you drive, your reef plate helps remind other Floridians about this unique Florida treasure. 

To get your “Protect Our Reefs” plate, click here (link opens in a new window)
for a listing of contacts and address information for the offices in your area.

You can also click here (.pdf file) to print a form and order your plate by mail. 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s