Mangrove Nature Reserve in Danger of Pest Attacks
Around 3,330 square meters of mangrove trees have been seen withering after pests have been wrecking havoc on the plants found in the mangrove nature reserve in Futian. The Avicennia marina pest has been attacking the tree variety that bears the same name as the pest, from June to September every year.
Although the withered trees still has complete trunks they will be in bloom again, the only concern that five experts from the insect research institute from Sun Yat-Sen University is that the increase in pest attacks at the reserve starting from 1990’s and are concerned that the Avicennia marina trees won’t blossom or have seedlings with such a long period of pest attacks.
The most eminent danger seen at the reserve’s mangroves is a new type of pest that resembles a snowflake and has been observed to have attacked the trees earlier this month and is said to last for three months. A brown colored pest was also observed that secretes a liquid on leaves screening them from sunlight thus preventing trees to grow. The brown colored pest only lives for 50 to 70 days and dies by autumn.
The reserves management body in cooperation with several scientific and technological institutions is busy finding ways to prevent the attacks using biological agents, however no positive results have been seen yet. The group is also looking for other agents to kill pest without harming birds or fish. Experts also said that the increase of pest can also be linked to the decreasing number of natural enemies such as birds and the reserve have been seen a decrease in the number and diversity of land birds around the mangrove lately.