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Podder, Rahul
- Observations on the Territoriality of a Dozen of Dragonflies Related to Pond and Canal Water
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Authors
Affiliations
1 RKMVC College, Rahara, Kolkata-700 118, IN
1 RKMVC College, Rahara, Kolkata-700 118, IN
Source
Journal of Environment and Sociobiology, Vol 12, No Sp Iss (2015), Pagination: 12-12Abstract
Dragonflies depend on water and/or aquatic plants for their larval life, while adults show interesting territorial behaviour on aquatic weeds. In the present communication, observations on the territoriality of a dozen of dragonflies habitating in temporary small pond at Barakashipur Forest of Dakshin Dinajpur District, West Bengal (JL No. 53, Area 31.7644 ha, External boundary 4.400 km, under Raiganj WLS, Uttar Dinajpur Dist.) and a 300 meter away rain water fed canal from river Atrai (distributary of river Teesta) were made for an year only. Ditch Jewels are noticed to chase and dislocate Ruddy Meadow Skimmers from aquatic vegetation. Common Club Tails do not allow Ruddy Marsh Skimmer and Green Marsh Hawk on the highest tip of aquatic twigs, though the latter accommodate in the lower tiers of the same twig. Yellow Tail Ashy Skimmer roams about all along the territory with other dragonflies and preferably rest on stick like vegetation on marshy bodies. Trumpet Tails and Little Blue Marsh Hawk occupy the central and/or peripheral part of the canal after the Ditch Jewels vacate it, owing to higher fuviatility of the water. Greater Crimson Gliders inhabited the periphery of the canal water but prefers to work on the long grasses and leaf lamina of large foliage in the aquatic body. Common Picture Wing is low fier, peace preferring dragonfly living on non-central of this aquatic body. Fulvous Forest Skimmer and Yellow Tail Ashy Skimmer are friendly in roaming, while the former work on dried benthic vegetation and rest on twig tip. Rufous Marsh Gliders are active in degraded water bodies. These carnivorous (sometimes cannibalistic) insects survive by avoiding competition through territoriality.
- Observations on the Territoriality of some Dragonflies Related to Pond and Canal Water
Abstract Views :308 |
PDF Views:1
Authors
Affiliations
1 Department of Zoology, RKMVC College, Rahara, Kolkata–700 118, IN
1 Department of Zoology, RKMVC College, Rahara, Kolkata–700 118, IN
Source
Journal of Environment and Sociobiology, Vol 12, No 2 (2015), Pagination: 221-230Abstract
Observations with twelve species of dragonflies habitating a temporary small pond at Barakashipur Forest of Dakshin Dinajpur district, West Bengal (JL No. 53, area 31.7644 ha, external boundary 4.400 km, under Raiganj WLS, Dinajpur N dist.) and a 300 meter away canal, rain water fed from river Atrai (distributary of river Teesta) were continued for an year only. During this observation, Ditch Jewels were noticed to chase and dislocate Ruddy Meadow Skimmers from aquatic vegetation. Common Club Tails do not allow Ruddy Marsh Skimmers and Green Marsh Hawks on the highest tip of aquatic twigs, though the latter accommodate in the lower tiers of the same twig. Yellow Tailed Ashy Skimmers roam about all along the territory with other dragonflies and preferably rest on stick like vegetation on marshy bodies. Trumpet Tails and Little Blue Marsh Hawks occupy the central and/or peripheral part of the canal after the Ditch Jewels vacate it, owing to higher fluviatility of the water. Greater Crimson Gliders inhabited the periphery of the canal water but they prefer to work on the long grasses and leaf lamina of large foliage in the aquatic body. Common Picture Wing is a low flier, peace preferring dragonfly living on non-central of this aquatic body. Fulvous Forest Skimmers and Yellow Tailed Ashy Skimmers are friendly in roaming, while the former work on dried benthic vegetation and rest on twig tip. Rufous Marsh Gliders are active in degraded water bodies. These carnivorous (sometimes cannibalistic) insects survive by avoiding competition through territoriality.Keywords
Barakashipur Forest, Dakshin Dinajpur District, Dragonflies, Resource Sharing, Partitioning, Dual Flight.References
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- Effect of Arsenic on Amino Acids Level in a Common Indian Grasshopper
Abstract Views :279 |
PDF Views:1
Authors
Affiliations
1 P. G. Department of Zoology, Bidhannagar College, EB-2, Sector-1, Kolkata-700 064, IN
2 Department of Zoology, Sidho-Kanho-Birsha University, Purulia, West Bengal, IN
1 P. G. Department of Zoology, Bidhannagar College, EB-2, Sector-1, Kolkata-700 064, IN
2 Department of Zoology, Sidho-Kanho-Birsha University, Purulia, West Bengal, IN
Source
Journal of Environment and Sociobiology, Vol 13, No 1 (2016), Pagination: 109-112Abstract
Amino acids are the building blocks of the body and play a significant role in metal binding and antioxidant defence. Arsenic is a widespread pollutant and an attempt was made in the present study, to observe the effect of mild stress of arsenic on the essential and non-essential amino acids in a common Indian grasshopper, namely, Gesonula punctifrons. The study revealed a significant increase in total amino acids content in compared to the untreated grasshoppers with the advancement of doses during 96 hours of the experiment. Study showed an increase in the level of Glycine indicating the recovery from the effect of Arsenic in G. punctifrons. Alanine and Arginine maintained steady state in the untreated as well as in the dosed grasshoppers which means the strengthening of immune system of the insects during the treatment with the heavy metals. Detoxification of the effect of arsenic was done by increasing the amount of Cystine and Glutamic acid, precursors of antioxidant like Glutathione.Keywords
Grasshopper, Arsenic, Toxicity, Amino Acids.References
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- Bischof, C. 1996. Effects of heavy metal stress on free amino acids in the haemolymph and proteins in haemolymph and total body tissue of Lymantria dispar larvae parasitized by Glyptapanteles liparidis. Entomol. Exp. Appl., 79: 61-68.
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- Devkota, B. and Schmidt, G. H. 2000b. Accumulation of heavy metals in food plants and grasshoppers from the Taigetos Mountains, Greece. Agri. Ecos. Environ., 78: 85-91.
- De, M. 2005. Arsenic-India's health crisis attracting global attention. Current Science, 88(5): 683-684.
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- Jeuniaux, C. 1971. Haemolymph –Arthropoda. In: M. Florkin and B.T. Scheer (eds.), Chemical Zoology, Vol VI, Arthropoda B. Academic Press, New York and London, pp. 63-111.
- Lindsay, D. M. and Sanders, J. G. 1999. Arsenic uptake and transfer in a simplified estuarine food chain. Environ. Toxicol. Chem., 9: 391-395.
- Malakar, C., Ganguly, A. and Haldar, P. 2009. Influence of Cadmium on growth, survival and clutch size of a common Indian Short Horned Grasshopper, Oxya fuscovittata. American-Eurasian J. Toxicol. Sciences, 1(1): 32-36.
- Nath, S., Anand, H. and Haldar, P. 2011. Study of short horned grasshoppers in relation to heavy metals accumulation. J. Ent. Res., 35(5): 291-293.
- Quayum, S. L. 2007. Effect of water hyacinth ischolar_main extract on arsenic level in different organs of arsenic-treated rat. Bangladesh J. Pharmacol., 2: 73-80.
- Schmidt, G. H. and Ibrahim, N. M. M. 1994. Heavy metal content (Hg+, Cd+, Pb+) in various body parts: Its impact on Cholinesterase activity and binding glycolprotein in grasshopper Aiolopus thalassinus adults. Ecotox. Environ. Safe, 29: 148-164.