Looper Caterpillar Invasion in North East Indian Tea Agro-Ecosystem: Change of Weather and Habitat Loss May be Possible Causes?
Palatty Allesh Sinu2
1 Department of Entomology, Tea Research Association, Tocklai Experimental station, Jorhat 785 008, Assam state, India
2 Plant Protection Department, Nagrakata Regional R&D Station, Tea Research Association, Nagrakata, Jalpaiguri, Pin 735 225, West Bengal, India
Journal of Tea Science Research, 2012, Vol. 2, No. 1 doi: 10.5376/jtsr.2012.02.0001
Received: 18 Sep., 2012 Accepted: 20 Sep., 2012 Published: 26 Sep., 2012
© 2012 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License
, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Antony et al., 2012, Looper Caterpillar Invasion in North East Indian Tea Agro-Ecosystem: Change of Weather and Habitat Loss May be Possible Causes? Journal of Tea Science Research, Vol.2, No.1 1-5 (doi: 10.5376/jtsr.2012.02.0001)
Tea industry in India hit a record loss of tea production in 2009-11 due to widespread attack of tea defoliators, looper caterpillar pests of geometrid moths (Lepidoptera) in major tea growing eco-belt of Assam and West Bengal states. This geometrid pest complex has at least four sister species, two each of Biston and Hyposidra; and a mixed brood of Ectropis sp. The former one was reported as a pest of tea in India since 1911, and later one reported from China and introduced to India; but Hyposidra is a novel tea pest globally, reported recently and that too first from northeast India. Through this article, we attempt to portray the severity of looper outbreak and raised two key questions; viz., present looper outbreak as an indication of climate change in north-east India? and habitat loss may be the fundamental reason for the primary invasion of looper?
Tea;Looper caterpillar;Biston; Hyposidra; Ectropis; Climate-change