scholarly journals ​An Annotated Checklist of Finfish and Shellfish Diversity of Pulicat Lake, Southeast Coast of India

Author(s):  
N. Jesintha ◽  
N. Jayakumar ◽  
K. Karuppasamy ◽  
B. Ahilan ◽  
D. Manikandavelu ◽  
...  

Background: Pulicat lake is the second largest brackish water lagoon in the country, lying partly in Andhra Pradesh and Tamil Nadu states along the Coromandel Coast of South India. The present paper gives information on occurrence, habitat preference, trophic level, human utility and fishery status of finfish and shellfish species of the Pulicat Lake. Methods: An extensive survey was conducted on finfish and shellfish diversity of Pulicat Lake from November 2019 to March 2021, selecting four fish landing centres viz, Pazhaverkadu, Arambakkam (fishing villages in Tamil Nadu), Venadu and Vatembedu (fishing villages in Andhra Pradesh) situated along the Lake. Result: In the present study, A total of 145 species including species of finfishes (95), prawns (8), crabs (7) and 35 molluscs (35) were documented from the Lake. Among the four selected landing centres, the highest diversity was observed in Pazhaverkadu, registering 143 species followed by Arambakkam (123), Vatembedu (85) and Venadu (77).

Author(s):  
Susikumar S ◽  
Nartunai G ◽  
Ilavarasan R

Background: Pterocarpus santalinus L.f. (Fam. Leguminosae) is a medium sized, deciduous tree distributed in South India mainly in Andhra Pradesh, Karnataka and Tamil Nadu. The heartwood is highly prized and medicinally useful. The heartwood is used in Indian system of medicine for leucorrhoea, piles, syphilis, vomiting, fever, thirst, purifying blood and in wound healing. Pterocarpus santalinus is one of the ingredients in many Siddha and Ayurvedic formulations namely Cintil Ney, Senchandana Manapagu, Candana Bala, Laksadi Taila and Candanadi lauha. Objective: The present study brings out macro-microscopic atlas on heartwood of medicinal plant Pterocarpus santalinus L.f. Materials and Methods: Sections and powder were observed and photographed under different magnifications with the help of Olympus BX51 Microscopic unit fitted with Olympus Camera. Results: Macroscopically colour, odour and taste; microscopically tyloses, needle eye end fibres, forked fibres with pegged and sharp end, pitted and border pitted vessels, uni-seriate medullary rays, Reddish brownish content, oil globules, simple starch grains, crystal fibres and prismatic crystals of calcium oxalate are the unique diagnostic characters reported. Conclusion: The finding of the present study is believed to be helpful in identifying the genuineness of the heartwood in crude raw drug and also in standardization of herbal formulation containing red sandalwood as ingredient.


2008 ◽  
Vol 3 (2) ◽  
Author(s):  
Maarten Bavinck

To the surprise of both governments and NGOs, village-level caste organisations – or panchayats - played a significant role in the post-tsunami relief effort to fisher-men in Tamil Nadu, India. This paper discusses the pro-active role of caste pancha-yats in relief from the perspective of social resilience, a factor that is frequently ar-gued to be of importance for disaster management. It presents panchayat action as an expression of collective agency that has a long tradition in the fishing villages of the region. Finally, comparing the reactions of caste panchayats in the post-tsunami situation with their performance in other instances of collective need, it considers their future role in fields such as fisheries management.


Author(s):  
Seema Mishra ◽  
Sanjay Dwivedi ◽  
Amit Kumar ◽  
Jürgen Mattusch ◽  
R.D. Tripathi

India is consisting of 29 states and 7 union territories, including a national capital, Delhi. Elevated concentrations (>10 g l ) of arsenic (As) in ground water (GW)  -1 of many states of India have become a major concern in recent years. Up to now about 0.2 million GW samples have been analyzed for As contamination from all over India by various researchers and Government agencies. About 90% of these cover only the Eastern part of India while several states and UTs are still unexplored. However, from the available data, GW of eighteen Indian states and three union territories has been found to be As contaminated to different extents through natural or anthropogenic origin. Among these, As >300 μg l has been reported from at least one locality from fourteen states. The -1 maximum level of As (7350 μg l ) in GW has been reported from a highly industrialized -1 area, Patancheru in Medak district of Andhra Pradesh. However, the gravity of problem is more in West Bengal followed by Bihar and Uttar Pradesh. Five out of eight North-Eastern states are also affected by As contamination. Manipur is ranked first and Assam as second followed by Arunachal Pradesh, Tripura and Nagaland. The GW in these regions is naturally As enriched, and therefore wide spatial distribution of As has been found in these areas. In North India, Punjab and Haryana and in South India, Andhra Pradesh and Karnataka are suffering with GW As contamination. Low level of As (up to 17 μg l ) has also -1 been reported in Tamil Nadu from South India. Many of the states like Jammu and Kashmir, Uttarakhand, Odisha, Gujrat, Kerala, Telengana, Goa etc. are still unexplored for GW As contamination. Thus, according to current reports out of 640 districts in India, 141 are As affected (As >10 g l-1), among them 120 are above 50 g l-1. Considering its severity, the issue of As contamination in drinking water has been taken up by the Government of India and mitigation efforts are being initiated. In order to provide safe drinking water, different agencies/ organizations have developed eco-friendly, cost effective devices/ filtration techniques having higher As removal capacity. Here we elucidated the current status of GWAs contamination in different states of India and the new developments of mitigation options.


2001 ◽  
Vol 33 (2) ◽  
pp. 185-197 ◽  
Author(s):  
S. KRISHNAMOORTHY ◽  
N. AUDINARAYANA

This study uses data from the 1992–93 National Family Health Survey to assess trends in consanguinity in the South Indian states of Andhra Pradesh, Karnataka, Kerala and Tamil Nadu. In Kerala, the frequency of consanguineous marriages is very low and one type of preferred marriage of the Dravidian marriage system – uncle–niece marriage – is conspicuously absent. In the other states of South India, consanguinity and the coefficient of inbreeding are high. While no change in consanguinity is observed during the past three to four decades in Karnataka, a definite decline is observed in Andhra Pradesh and Tamil Nadu. Due to recent changes in the demographic and social situation in these states, this decline in consanguinity is likely to continue.


2016 ◽  
Vol 8 (3) ◽  
pp. 1444-1451
Author(s):  
S. Srinivasnaik ◽  
M. Suganthy ◽  
S. Mohan Kumar ◽  
V. Jegadeeswari

Survey, monitoring and documentation of entomofauna of cocoa was carried out in three cocoa growing states viz., Tamil Nadu, Kerala and Andhra Pradesh during 2014-2015. Results revealed that a total number of 23 species of insect pests and 13 species of natural enemies were documented and identified. Among the insect pests, 14, 2 and 7 species were sucking pests, borers and defoliators, respectively. Among the natural enemies, 7 species of predators and 6 species of parasitoids were documented and identified on different insect pests of cocoa. Among the insect pests, sucking pests were found to be predominant and maximum number of entomofauna were recorded in major coco growing areas of Tamil Nadu. From the results it was concluded that the list of entomofauna documented can enhance the knowledge on diversity of the entomofauna associated with cocoa in three different cocoa growing states. Sucking pests were found to be predominant and caused huge yield loss in Tamil Nadu and Kerala. While in Andhra Pradesh pod borer and bark eating caterpillar were found to be predominant causing severe yield loss. This information provides a base for development of location specific Integrated Pest Management module.


2018 ◽  
Author(s):  
Teja Malladi ◽  
Dhananjayan Mayavel ◽  
Nilakshi Chatterji ◽  
Pratyush Tripathy

Author(s):  
Arun Kumar P. ◽  
Elangaimannan R.

The study was conducted to evolve Gloriosa superba for yield characters and alkalodi content for selecting elite genotypes for comercial exploitatio n. The genotypes were sowm in Variyankaval village, Udayarpalayam taluk of Ariyalur district, Tamil Nadu. The highest mean value for fresh and dry seed yield was observed in Chittor local. The genotype Mulanur local has recorded the highest mean value for number of pods per plant and number of seeds per pod and Arupukotai local excelled the general mean for the traits seeds per pod, fresh and dry seed yield and also for tuber characters. An investigation was carried out to quantify the colchicine (alkaloid) present in tubers by High Performance Liquid Chromatography (HPLC) method. The genotypes collected from Arupukotai recorded the highest colchicine content (0.760 mg/g) followed by Chittoor (0.578 mg/g) and Mulanur (0.496 mg/g) and there by these three genotypes were utilized for further crop improvement.


2016 ◽  
Vol 1 (1) ◽  
Author(s):  
A.K. Asthana ◽  
Priyanshu Srivastava

Eastern Ghats are discontinuous hill ranges passing through Orissa, Andhra Pradesh and Tamil Nadu located between 11⁰30' & 22⁰N latitude and 76⁰50' & 86⁰30'E longitude. Bryophyte flora of this region is still very less explored. During a recent field exploration to Eastern Ghats region of Tamil Nadu three moss taxa viz. Solmsiella biseriata (Austin) Steere, Aulacopilum glaucam Wilson and Groutiella tomentosa (Hornsch) Wijk & Marg. have been identified as new additions to moss flora of Eastern Ghats. The present study provides the information regarding extended range of distribution of these taxa in India and a compensable account of morpho-taxonomical details with earlier described taxa from other bryogeographical zones.


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