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Hazra, Ashis Kumar
- Species Composition, Vertical Distribution and Seasonal Variation of Collembola in Hilltop and Foothill of Darjeeling Himalaya, West Bengal, India
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Authors
Affiliations
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
2 Dept. of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, IN
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
2 Dept. of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, IN
Source
Journal of Environment and Sociobiology, Vol 3, No 1 (2006), Pagination: 15-24Abstract
Despite the environmental importance of Collembola, basic information on the occurrence and ecology of these soil micro-arthropods is lacking, especially in Darjeeling Himalaya. To address such gaps the present research was conducted with objectives to determine what Collembola species inhabit the soil of two different altitudinal sites of Darjeeling Himalaya as well as their vertical distribution and seasonal variations. Altogether 22 species of Collembola belonging to three families were recorded from the hilltop and foothill sites of the Darjeeling Himalaya. The maximum number of collembolan species was found in foothill site (20 species) than in the hilltop site (10 species) of Darjeeling Himalaya. The population density of Collembola marked a significant decrease from upper most layers to deeper layers of soil. The highest collembolan density was recorded during the spring season in both the sites but lowest density was recorded during summer at Hilltop site and during autumn at Foothill site of Darjeeling Himalaya.Keywords
Collembola, Species Composition, Vertical Distribution, Seasonal Variation, Hilltop, Foothill, Darjeeling Himalaya.- Effect of Industrial Effluent on the Population Structure of Soil Microarthropods at Bokaro Steel Plant Area, Jharkhand-A Preliminary Survey
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Authors
Affiliations
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
Source
Journal of Environment and Sociobiology, Vol 3, No 1 (2006), Pagination: 33-40Abstract
A field survey was conducted in and around Bokaro steel plant area, Jharkhand, India to know the effect of continuous discharge of steel plant effluents on the soil microarthropods. The density and diversity of soil microarthropods are low nearer to the steel plant area compared to those of the distant sites. Acari was the predominant group followed by the Collembola and other soil microarthropods are few in number. The soil factors like temperature, relative humidity, moisture, pH and organic carbon have also been conducted. The relationship between soil microarthropods and these physico-chemical parameters is analyzed statistically.Keywords
Soil Microarthropods Population, Industrial Effluents, Steel Plant.- Morphological Variations and New Records of Zygentoma (Apterygota: Insecta) from India
Abstract Views :242 |
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Authors
Affiliations
1 Zoological Survey of India, Kolkata, IN
2 PG Department of Zoology, Vidyasagar College (University of Calcutta), Salt Lake, Kolkata, IN
1 Zoological Survey of India, Kolkata, IN
2 PG Department of Zoology, Vidyasagar College (University of Calcutta), Salt Lake, Kolkata, IN
Source
Journal of Environment and Sociobiology, Vol 17, No 1 (2020), Pagination: 35-38Abstract
Morphological variations and new records of the species Ctenolepisma (Ctenolepisma) alticola herein from Jharkhand and the species Ctenolepisma (Ctenolepisma) boettgerianum from Madhya Pradesh, Chhattisgarh and Gujarat states of India are communicated. Diagnosis and distribution of those species have been given.
Keywords
Silverfish, Ctenolepisma, Morphology, New Records.References
- Hazra, A. K. and Mandal, G. P. 2004. Insecta: Apterygota: Thysanura. In: Fauna of Sikkim, State Fauna Series, Zool. Surv. India, Kolkata, 9(2): 101-107 pp.
- Hazra, A. K. and Mandal, G. P. 2007. Pictorial Handbook on Indian Thysanura. (Published by the Director, Zool. Surv. India, Kolkata), 1-43 pp.
- Mendes, L. F. 1991. On the zoogeographic affinities of the thysanurans (Mycrocoryphia and Zygentoma) from India. In: G. K. Veeresh, D. Rajagopal and C. A.
- Viraktamath (eds.), Advances in Management and Conservation of Soil Fauna. Oxford & IBH Publishing Co. Ltd., New Delhi, pp. 15-24.
- Paclt, T. 1961. Borstenschwanze (Ins., Thysanura) des Senckenberg Museums. Senckenb. Biol., 42(1-2): 77-79.
- Smith, G.B. 2018. The Contribution of Silverfish (Insecta: Zygentoma) to Australian Invertebrate Biodiversity and Endemism. Ph. D. Thesis, Federation University, Australia, 1-75 pp.