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A. K. Choudhary ¹, A. K. Jain ², Sandeep Singh ², R. M. Manickavasagam ¹, K. Chandra ¹

Affiliations
1 Institute Instrumentation Centre, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN
2 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, IN

Abstract

This work provides unequivocal evidence of the existence of Mesoarchean granulite facies metamorphic event in the Palghat-Cauvery Shear Zone (PCSZ) of South India. Charnockite samples from two prominent hills at Kollaimalai (KM) and Pachchaimalai (PM) as well as from two quarries within the Bhavani Shear Zone (BSZ) have been analyzed for their Sm-Nd and Rb-Sr ages to investigate the existence or otherwise of the Archean granulite facies events within the PCSZ. The Rb-Sr whole-rock isochron ages for massive charnockites from both the hills appear to be contemporaneous at 2.9 Ga with the initial Sr isotopic ratios of 0.7012 and 0.7014, respectively. However, the Rb-Sr data for whole-rock samples of basic granulites from one of the quarries within the BSZ indicate open system behavior, while the charnockites from the other quarry have insufficient spread in ⁸⁷Rb/⁸⁶Sr ratios and do not yield any isochron. The Sm-Nd data, on the other hand, do not distinguish between the massive charnockite and the lowland charnockite and yield Depleted Mantle model ages in the range 2.98±0.3 Ga for all of them. The ε^T _CHUR for all of these rocks are highly positive. Both the Sr isotopic ratios and positive ε^T _CHUR values for these rocks strongly suggest a mantle source for all of them. An upper age limit of ∼3.28 Ga may be assigned to the crustal accretion of the protolith of all these rocks on the basis of their Nd model ages. The Rb-Sr isochron ages of 2.9 Ga for the two massifs could be the age of granulite facies metamorphism. Thus, the metamorphism in the KM and PM Hills took place within ∼100 Ma of crustal accretion of these rocks and probably was part of the same geological event of crust formation and metamorphism. The open system behavior with respect to Rb-Sr isotopes in the basic granulite from Bhavani is possibly due to the migration of Sr isotopes, triggered during the later shearing of these rocks.

Keywords

Rb-Sr and Sm-Nd Geochronology, Granulite Facies Metamorphism, Southern Granulite Terrain.

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Amar ¹, K. Chandra ¹, Smritiratan Tripathy ¹, Dishari Lahari ¹, Sanjukta Mukhopadhyay ¹

Affiliations
1 Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University College of Science and Technology, University of Calcutta, Kolkata - 700 009, IN

Abstract

Iodine in trace amount is essential for normal development and function of the brain and maintenance of body heat and energy. Man gets iodine through food and water. Iodine deficiency in a region is characterised by iodine poor soil, less iodine in foods (animal or vegetable origin) and in drinking water, resulting in iodine deprivation of living organism. The major consequences of iodine deficiency are goitre (enlargement of thyroid gland than normal), still birth and miscarriages, mental defect, deaf-mutism, weakness and paralysis of muscles as well as lesser degree of physical and mental function.

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K. Chandra ¹

Affiliations
1 Zoological Survey of India, IN

Abstract

Zoological Survey of India (ZSI) is a premier taxonomic research organization, under the Ministry of Environment, Forests and Climate Change (MoEF&CC), Govt. of India, engaged in zoological research and documentation of the faunal resources of the country. It was established on 1^st July 1916 to promote the survey, exploration and research on the fauna of the Indian Region.

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K. Chandra ¹

Affiliations
1 Zoological Survey of India, IN

Abstract

Zoological Survey of India (ZSI) is a premier taxonomic research organization, under the Ministry of Environment, Forests and Climate Change (MoEF&CC), Govt. of India, engaged in zoological research and documentation of the faunal resources of the country. It was established on 1^st July 1916 to promote the survey, exploration and research on the fauna of the Indian Region.

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K. Chandra ¹

Affiliations
1 Zoological Survey of India, IN

Abstract

Zoological Survey of India (ZSI) is a premier taxonomic research organization, under the Ministry of Environment, Forests and Climate Change (MoEF&CC), Govt. of India, engaged in zoological research and documentation of the faunal resources of the country. It was established on 1^st July 1916 to promote the survey, exploration and research on the fauna of the Indian Region.

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K. Chandra ¹

Affiliations
1 Zoological Survey of India, IN

Abstract

Zoological Survey of India (ZSI) is a premier taxonomic research organization, under the Ministry of Environment, Forests and Climate Change (MoEF&CC), Govt. of India, engaged in zoological research and documentation of the faunal resources of the country. It was established on 1^st July 1916 to promote the survey, exploration and research on the fauna of the Indian Region.

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K. Chandra ¹

Affiliations
1 Zoological Survey of India, IN

Abstract

Zoological Survey of India (ZSI) is a premier taxonomic research organization, under the Ministry of Environment, Forests and Climate Change (MoEF&CC), Govt. of India, engaged in zoological research and documentation of the faunal resources of the country. It was established on 1^st July 1916 to promote the survey, exploration and research on the fauna of the Indian Region.

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B. Lal ¹, V. D. Hegde ¹, K. Chandra ¹

Affiliations
1 Zoological Survey of India, M-Block, New Alipore, Kolkata 700 053, IN

Abstract

Chhattisgarh state is located in the central part of India surrounded by 05 states, viz; Jharkhand, Madhya Pradesh, Maharashtra, Odisha and Andhra Pradesh and occupying an area of about 1,35,000 sq. k. m. A perusal of literature reveals that 103 species of different groups of insects are reported from Chhattisgarh (Ramakrishna et al., 2006). Recent reference (Srivastava, 2014) on Dermaptera of Achanakmar Amarkantak Biosphere Reserve of Chhattisgarh state reveals the record of 05 species only. Hence, an attempt has been made to explore the Dermaptera fauna of this state by studying the collections made during the recent surveys conducted by different survey parties of the Zoological Survey of India.

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B. Biswas ¹, M. E. Hassan ¹, K. Chandra ¹, K. Praveen ¹

Affiliations
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN

Abstract

Reuter (1910) first established the Coreoidea as a superfamily of the Heteroptera and Leston et al. (1954) placed the Coreoidea within infraorder Pentatomomorpha. The superfamily includes fi ve families: Alydidae (broad headed bugs), Coreidae (Leaf-footed bugs or Squash bugs), Rhopalidae (Scentless plant bugs), Stenocephalidae (confi ned to Eastern Hemisphere) and Hyocephalidae (endemic to Australia), comprising of 2376 species from the world (Henry 2009). Of these, about 200 species under 60 genera are so far known from India including 78 endemic species.

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M. E. Hassan ¹, K. Chandra ¹, B. Biswas ¹

Affiliations
1 Zoological Survey of India, Parnivigyan Bhavan, 535, M-Block, New Alipore, Kolkata-700 053, West Bengal, IN

Abstract

Mahua (Maduca indica) is one of the most important forest trees widely distributed in India, belonging to family Sapotaceae. It is a tropical tree found largely in Central and North Indian plains forests. It is fast growing tree attains about 20 meters in height, possesses evergreen or semi-evergreen foliage. The tree is considered as boon for the tribals and forest dwellers in Central India.

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Srimoyee Basu ¹, K. Chandra ¹, T. Venkatesan ²

Affiliations
1 Zoological Survey of India, M Block, New Alipore, Kolkata – 700053, West Bengal, IN
2 ICAR-National Bureau of Agricultural Insect Resources, H.A. Farm Post, Bellary road, Hebbal, Bangalore – 560024, Karnataka, IN

Abstract

In the present study, a total of eight species of aquatic and semi-aquatic Hemiptera collected from India were identified based on morphology and mitochondrial cytochrome oxidase gene I (COI). Details of morphology based identification and the utility of COI gene to identify the aquatic Hemiptera is discussed in this paper.

Keywords

Aquatic and Semi-Aquatic Bugs, Cytochrome Oxidase I, Hemiptera, Taxonomy.

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