Navigation Links
Captive breeding could transform the saltwater aquarium trade and save coral reefs

AUSTIN, Texas Marine biologists at The University of Texas at Austin Marine Science Institute are developing means to efficiently breed saltwater aquarium fish, seahorses, plankton and invertebrates in captivity in order to preserve the biologically rich ecosystems of the world's coral reefs.

These scientists believe their efforts, and those of colleagues around the world, could help shift much of the $1 billion marine ornamental industry toward entrepreneurs who are working sustainably to raise fish for the aquarium trade.

"It's the kind of thing that could transform the industry in the way that the idea of 'organic' has changed the way people grow and buy fruits and vegetables," says Joan Holt, professor and associate chair of marine science at The University of Texas at Austin. "We want enthusiasts to be able to stock their saltwater tanks with sustainably-raised, coral-safe species."

Holt is a co-author of a recent article, "Advances in Breeding and Rearing Marine Ornamentals," published in the Journal of the World Aquaculture Society in April.

The paper is a complement to Holt's broad-ranging work over the past 10 years to promote captive breeding of ornamentals. She's been a pioneer in developing food sources and tank designs that enable fragile larvae to survive to adulthood.

Holt has also been a vocal critic of the extraordinarily wasteful methods currently used to bring sea creatures from the oceans to the tanks.

"One popular method is to use a cyanide solution," says Holt. "It's squirted into the holes and crevices of the reef and it anesthetizes the fish. They float to the surface. Then the collectors can just scoop them up, and the ones that wake up are shipped out."

This method, says Holt, has a number of unfortunate effects. It bleaches the coral. It kills or harms other species that make the coral their home, particularly those that can't swim away from the cyanide. It can deplete or distort the native populations of the species. And it contributes to 80 percent of traded animals dying before ever reaching a tank.

Unlike the freshwater ornamental market, which relies mostly on fish raised in captivity, the saltwater ornamental market is 99.9 percent wild caught. Holt says this is largely because there's less accumulated knowledge on breeding saltwater fish in captivity. Saltwater species also tend to spawn smaller, less robust larvae, which are harder to rear to maturity, and to rely on various foods, such as plankton, that are not readily available in mass quantities for breeders.

Yet all these difficulties, says Holt, are surmountable.

She and her colleagues in Port Aransas, where the Marine Science Institute is located, have successfully bred in captivity seven species of fish, seahorses and shrimp they've caught from the Gulf of Mexico and the Caribbean, including species that other biologists had tried but failed to rear before. Others have successfully bred popular species like clownfish, gobies, dottybacks, and dragonets, as well as coral, clams, invertebrates, and algae.

Several big aquariums, including SeaWorld, have committed to assisting in the breeding and egg collection effort, and to integrating into their exhibits information about how the aquarium trade impacts the coral reefs.

Holt and her colleagues envision, ultimately, is a "coral-safe" movement. The science, the economics and the social awareness could together result in a sea change in how saltwater aquariums are populated and how saltwater tank enthusiasts think of themselves and their passion.

As more tank-raised ornamentals percolate into the market, Holt believes people will see another advantage to buying sustainably. The fish will simply do better. They'll live longer, be healthier and be easier to care for.

"Species that are bred in captivity should adapt much better to your tank than something that was just caught halfway across the world, in a different system," says Holt. "Good retailers will want to sell these species, and consumers will benefit from buying them."


Contact: Daniel Oppenheimer
University of Texas at Austin

Related biology news :

1. Study rules out inbreeding as cause of amphibian deformities
2. Favorite Thanksgiving dish gets upscale breeding
3. Identifying mega-targets for high-yield plant breeding
4. Researchers take first look at the genetic dynamics of inbreeding depression
5. Bone deformities linked to inbreeding in Isle Royale wolves
6. Is this the beginning of the end of plant breeding?
7. 121 breeding tigers estimated to be found in Nepal
8. Mary had a lot of lambs: Researchers identify way to accelerate sheep breeding
9. Breeding their horns off -- a winner
10. Genetic discovery could break wine industry bottleneck, accelerate grapevine breeding
11. ARS researchers develop method to speed up breeding of scab-resistant barley cultivars
Post Your Comments:
Related Image:
Captive breeding could transform the saltwater aquarium trade and save coral reefs
(Date:11/20/2015)... , November 20, 2015 NXTD ... focused on the growing mobile commerce market and creator ... Gino Pereira , was recently interviewed on The ... air on this weekend on Bloomberg Europe , ... . --> NXTD ) ("NXT-ID" or the ...
(Date:11/18/2015)... Nov. 18, 2015  As new scientific discoveries deepen ... and other healthcare providers face challenges in better using ... patients. In addition, as more children continue to survive ... adulthood and old age. John M. Maris, ... Hospital of Philadelphia (CHOP) . --> ...
(Date:11/17/2015)... 17, 2015 Paris ... --> Paris , qui s,est ... DERMALOG, le leader de l,innovation biométrique, a inventé le ... et empreintes sur la même surface de balayage. Jusqu,ici, ... l,autre pour les empreintes digitales. Désormais, un seul scanner ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... , December 1, 2015 Dr. Harry Lander , ... serving as Chief Science Officer and recruits ... Harry Lander , President of Regen, expands his role to ... and recruits five distinguished scientists to join advisory ... expands his role to include serving as ...
(Date:11/30/2015)... , ... November 30, 2015 , ... Global Stem ... development stages of a new closed system for isolating adipose-derived stem cells. The announcement ... fraction (SVF) of adipose tissue. SVF is a component of the lipoaspirate obtained from ...
(Date:11/30/2015)... , December 1, 2015 Partnership includes an ... for the u niversity , ... support treatment s cale - up ... (ARVs)   Africa , where licensees based anywhere in the ... on SDN technology. --> Africa , where licensees based anywhere ...
(Date:11/30/2015)... ... November 30, 2015 , ... Imagine ... Jurassic World: The Exhibition, opening in March 2016 at Melbourne Museum in Melbourne, ... tour including several North American tour dates. The Exhibition is based on Universal ...
Breaking Biology Technology: