Iran News ...


6/12/06

Iran determined to eradicate Caspian Sea pest Mnemiopsis Leidyi

TEHRAN, June 11 (Mehr News Agency) -- Iran is determined in its decision to fight, Caspian Sea pest Mnemiopsis Leidyi. The comb jellyfish newly introduced into the Caspian Sea feeds on the food resources of the kilka fish, the director of the Research Institute of Iran's Fisheries Company said on Sunday.

Since neighboring Caspian Sea littoral states have not been much affected by the scourge, they do not show interest in cooperation with Iran in its fight against the pest, Abbasali Motallebi added.

The presence of the non-indigenous pest was first detected in the Caspian Sea in the year 2000.

It was introduced to the ecosystem of the sea through the water balance of commuting vessels, the Persian service of Iranian Students News Agency (ISNA) quoted him as saying.

Given the heavy ecosystem damages the Black Sea has suffered through the presence of the aggressive aquatic and by making use of the expertise they gathered in this regard, the researches have eventually decided on the biological fight against the pest, Motallebi also said.

The biological approach to the problem will include the introduction of Beroe ovata - another aquatic of the same species - to the sea. It feeds on Mnemiopsis Leidyi, the official said.

The presence of the Mnemiopsis Leidyi in the Caspian Sea in 1995 has resulted in a 25 percent decline in kilka resources of the sea.

The kilka catches of the Caspian Sea varieties targeted by the Third Five-Year Socioeconomic Development Plan was to hit something between 90,000 and 95,000 tons but, the figure has plummeted to about 20,000 to 25,000 tons now, he further explained.

Occurrence of Mnemiopsis in the large numbers in the southern parts of the Caspian Sea was registered in the western part of the mid-Caspian Sea in May 2000

The Caspian Sea or Mazandaran Sea is the world's largest inland body of water and is home to 87 species of microphytes and many species of green algae.

... Payvand News - 6/12/06 ... --



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