Tue, Jun 24, 2003 - Page 16 News List

Seahorses avoid monogamy trap and extinction

An Irish initiative to breed seahorses which can be kept as pets and don't die after a couple of months could help replenish stocks denuded by demand for the Chinese medicine market


A vendor stands behind sticks of seahorses and scorpions waiting to be deep fried as snacks in Beijing. Seahorses have been fished to the point of extinction for the traditional Chinese medicine market, but an Irish company says its goal is to help save the endangered species by cultivating seahorses born in captivity for the growing aquarium market.


Seahorses are their own worst enemy.

Fished to the point of extinction for the traditional Chinese medicine market, they mate for life and their unwillingness to seek new partners after being separated has done little to improve their chances of survival.

One of their better hopes for conservation may lie in the unlikeliest of places -- a ramshackle shed perched on the edge of the Atlantic Ocean.

Seahorse Ireland says its goal is to help save the species by cultivating seahorses born in captivity for the growing aquarium market.

"We want to make people aware that the captive-bred seahorse is a much better buy," said production manager Ken Maher, from the makeshift laboratory in Connemara, west Ireland.

"There's no deleterious effect on the environment and the seahorse will survive and flourish in your tank."

Seahorses are no ordinary sea creatures, notwithstanding their monogamy which is highly unusual for the animal kingdom. It is the male who receives eggs from his female partner and fertilizes them himself.

"The female swims up to her chosen male partner and the two change color as they dance around each other for hours in an elaborate courtship ritual," said Maher.

After receiving eggs from the female and fertilizing them himself, the male is pregnant for about three weeks before giving birth.


The low-cost technology pioneered by Seahorse Ireland could be transferred to poorer parts of the world where seahorse stocks are fast becoming depleted.

Next year, a ban on international trade in seahorses, unless they are captive-bred or for scientific purposes, is due to come into operation, a move likely to cripple the livelihoods of thousands of dependent fishermen.

"Other conservation bodies try to say `this is a sanctuary, no fishing is allowed here,' and try to get locals to make arts and crafts instead," Maher said.

"But these people are fishermen who want to live near the sea. I know I could not switch to making arts and crafts if I was in their position."

If no alternative was provided, the trade would simply go underground, Maher said.

An estimated 40 million seahorses a year are taken from the wild for traditional Chinese medicine in which they are used as an aphrodisiac as well as a range of ailments including heart disease.

Demand has risen in recent years to such an extent that seahorses retail for about US$1,900 a kilogram in Asia, almost the price of gold.

A further one million are fished for the curio trade because seahorses retain their shape and color when dried.

The pet trade takes another one million, but very few survive beyond a few months or so without live food.

Frozen food

That's where Seahorse Ireland comes in -- it trains captive-born seahorses to get used to frozen food.

"Once we train them to take frozen food, they can be sent all over the world," said Maher.

Set up three years ago by Maher and his fellow marine biologist Kealan Doyle, Seahorse Ireland has two key advantages right on its doorstep.

First, the larger of the two seahorse species local to Ireland, the spiny seahorse, can be found in seagrass beds in and around nearby Kilkieran Bay.

In addition, the west coast of Ireland offers an abundance of zooplankton enriched by nutrients from the Gulf Stream, and the company has developed a system to extract and freeze this food.

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