Ecology, Environment and Conservation Paper

Vol 22, Issue 1, 2016; Page No.(501-505)

IMPACT OF INSECT PEST INCIDENCE ON NATURAL POPULATIONS OF SYZYGIUM TRAVANCORICUM GAMBLE – A CRITICALLY ENDANGERED SPECIES OF THE SOUTHERN WESTERN GHATS

A. Hussain and C. Anilkumar

Abstract

In a study on the population structure, dynamics and conservation of Syzygium travancoricum Gamble. An economically important and critically endangered tree of southern Western Ghats region. Three species of insects belonging to Dipteara and Coleoptera were found to be associated with this species as pests. The first one is the (oriental fruit fly) Bactrocera dorsalis (Hendel) is a very destructive pest of fruit and seed belongs to the order Diptera, the second one is a seed attacking weevil Ochyromera sp. is a very destructive pest of seeds belongs to the order Coleoptera and third one is the leaf cutting weevil Deporaus marginatus (Pascoe) belongs to the order Coleoptera which damaging the young foliage of the young plant. The adult feeding produces ‘window panes’ on young leaves. The first two species is very dangerous to the fruit- seed infestation. All the above three species of pests leads to the major casual factor to the untimely endangerment of the host plant in their natural habitat.

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