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Ghosh, S.
- Rapid Assessment of Recent Flood Episode in Kaziranga National Park, Assam Using Remotely Sensed Satellite Data
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Affiliations
1 Indian Institute of Remote Sensing (ISRO), Dehradun 248 001, IN
1 Indian Institute of Remote Sensing (ISRO), Dehradun 248 001, IN
Source
Current Science, Vol 111, No 9 (2016), Pagination: 1450-1451Abstract
Flooding is considered as the most damaging natural hazard. Continuous population growth associated with changes in land use and climate exacerbates flood hazard, and makes livelihood more precarious. A large part of Assam, a state of northeastern India, experiences devastating flood frequently. The Brahmaputra river, along with its distributaries and tributaries in Assam, causes flood in the monsoon season each year which affects agriculture, human life and properties, wildlife, etc.Full Text
References
- Kushwaha, S. P. S., Kalra, M. and Sahi, S., Mapping of Kaziranga Conservation Area, Project Report, IIRS/FED/Kaziranga/36/ 8026/2008.
- Ghosh, S. et al., Mar. Geod., 2015, 38(suppl), 597–613.
- Sridevi, T., Sharma, R., Mehra, P. and Prasad, K. V. S. R., Remote Sensing Lett., 2016, 7(4), 348–357.
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- Inter-Specific Relationship of Size and Walking Speed in Predaceous Ladybirds (Insecta: Coleoptera: Coccinellidae)
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Authors
S. Ghosh
1,
B. K. Agarwala
1
Affiliations
1 Department of Zoology, Tripura University, Suryamaninagar, Tripura 799 022, IN
1 Department of Zoology, Tripura University, Suryamaninagar, Tripura 799 022, IN
Source
Current Science, Vol 115, No 1 (2018), Pagination: 141-146Abstract
Inter-specific relationships of size and walking speed were examined in five species of predaceous ladybird beetles of aphid prey from different habitats. Lengths of legs, weight and volume of body, and walking speed varied significantly among the five species of different sizes that were reared on their preferred prey food in uniform growth conditions. The species are Menochilus sexmaculata, Coccinella transversalis, Anisolemnia dilatata, Micraspis discolor and Scymnus sp. Lengths of legs and body sizes showed similar growth rates across the five species (isometry), but the giant ladybird species showed significantly higher positive allometry in body volume (allometric coefficient, α = 6.66) and significantly lower negative allometry in walking speed relative to body weight (α = 0.95) when compared to other species (α = 3.54). The unique response by the giant ladybird species in body form and speed may be attributed to its foraging habitat of perennial bamboo forests with large aggregations of non-winged aphid food which seem to favour the evolution of higher body volume and slower speed for giant size when compared to species of smaller sizes which usually forage for short-lived aphid colonies in seasonal and annual habitats of crop plants and weeds. Evidently, size (weight and volume) and speed matter in the evolution of life history attributes of predaceous ladybird beetles.Keywords
Evolutionary Allometry, Predaceous Ladybirds, Size and Speed.Full Text
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- Corrigendum:Inter-Specific Relationship of Size and Walking Speed in Predaceous Ladybirds (Insecta:Coleoptera:Coccinellidae)
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Current Science, Vol 115, No 5 (2018), Pagination: 810-810Abstract
The following corrections are suggested in citations nos. 11 and 32.Full Text