Biodiversity of marine fungi in mangroves with reference to Muthupet mangroves, Tamil Nadu, east coast of India

2021 ◽  
Vol 51 (6) ◽  
Author(s):  
Devadatha Bandarupalli ◽  
E. B. Gareth Jones ◽  
Sudeep D. Ghate ◽  
V. Venkateswara Sarma
Keyword(s):  
Tamil Nadu ◽  
East Coast ◽  
Marine Fungi ◽  
East Coast Of India

Redescription and molecular characterization of Crenidens macracanthus Günther, 1874 (Pisces: Sparidae), and first record of C. indicus Day, 1873 in the eastern Indian Ocean

2020 ◽  
Vol 100 (7) ◽  
pp. 1147-1153
Author(s):  
Subal Kumar Roul ◽  
N. S. Jeena ◽  
Shubhadeep Ghosh ◽  
Prathibha Rohit
Keyword(s):  
Indian Ocean ◽  
Tamil Nadu ◽  
East Coast ◽  
Eastern Indian Ocean ◽  
Valid Species ◽  
Morphological Description ◽  
Type Specimens ◽  
Meristic Characters ◽  
East Coast Of India ◽  
North East

AbstractCrenidens macracanthus was originally described in 1874 based on a single specimen collected from Chennai (Madras), south-east coast of India. In 1875, the species was synonymized with C. indicus without citing any valid reason. Since then, no taxonomic studies have been attempted for the genus Crenidens, except in 2013 the species was resurrected from synonymy and redescribed as a valid species based on the holotype and non-type specimen. In view of the fact that C. macracanthus is a poorly known species, it is redescribed based on examination of 30 additional specimens of 105.8–162.2 mm SL, collected from Puri, Odisha, north-east coast of India (Bay of Bengal) from 2017–2019, using morphological and molecular examinations. Our study provides a detailed morphological description, first colour photographs and phylogenetic analysis using COI barcodes of the species. The study has expanded the range in several morpho-meristic characters in comparison with the type and non-type specimens described earlier. The species in fresh condition can be easily distinguished from its two congeners (C. crenidens and C. indicus) by the yellowish tip of the lower caudal-fin lobe. Our study has also extended the distribution range of C. indicus (previously known only from the north-eastern Arabian Sea) to the eastern Indian Ocean, based on examination of a preserved specimen collected from Tuticorin, Tamil Nadu.

scholarly journals Ehinoid landings at Mandapam, south-east coast of India with a note on gonadal maturity of two species of sea urchins

2017 ◽  
Vol 64 ◽  
Author(s):  
R. Saravanan ◽  
P. Jawahar ◽  
T. Francis ◽  
B. Ahilan ◽  
R. Santhakumar ◽  
...  
Keyword(s):  
Tamil Nadu ◽  
East Coast ◽  
Sea Urchins ◽  
Marine Ecosystem ◽  
Gonad Index ◽  
Future Research ◽  
Gulf Of Mannar ◽  
East Coast Of India ◽  
Gonadal Maturity ◽  
Suitable Environment

The sea urchins, belonging to phylum Echinodermata, are a good source of “roe”, (gonads) and are being consumed by humans since pre-historic times. In many countries of the world, it is a delicacy among the food items and in retail markets in Japan, it is sold at prices as high as US$ 600 kg-1. Among the 800 species of echinoids, 105 species are found along the east coast of India and 30 species are recorded along the coast of Tamil Nadu. There is a paucity of information on the biology and ecology of sea urchins and lack of studies on its edibility and palatability. The sea urchin aquaculture called as echiniculture is picking up in subtropics and temperate areas. Importantly, the tropical marine ecosystem of India, which supports diverse flora and fauna is a suitable environment for echiniculture, and the future research needs to be focused to find out the potential species and developing techniques for their aquaculture. The present investigation analysed the landings of echinoderms in the Gulf of Mannar and Palk Bay along the south-east coast of India and also studied the gonadal maturity of two species of sea urchins viz., Salmacis virgulata and Temnopleurus toreumaticus in order to assess their suitability for echiniculture. S. virgulata and T. toreumaticus formed 70 and 30% respectively of the sea urchins landings at Vedalai and Pampan landing centres. The overall sex ratio of both the species did not deviate significantly from 1:1. In S. virgulata the mean monthly gonad index was highest (9.62±0.46) during September 2014 and for T. toreumaticus, the peak GSI was observed during December 2013. Further studies on captive maturation and breeding are needed to explore the potential of these species for echiniculture.

scholarly journals Application of multivariate technique to evaluate spatial distribution of natural radionuclides along Tamil Nadu coastline, east coast of India

2019 ◽  
Vol 1 (7) ◽  
Author(s):  
Satyanarayan Bramha ◽  
Sunil Kumar Sahoo ◽  
Venkatesan Subramanian ◽  
Balasubramanian Venkatraman ◽  
Prasanta Rath
Keyword(s):  
Spatial Distribution ◽  
Tamil Nadu ◽  
East Coast ◽  
Natural Radionuclides ◽  
East Coast Of India ◽  
Multivariate Technique

Bioindicator role of tintinnid (Protozoa: Ciliophora) for water quality monitoring in Kalpakkam, Tamil Nadu, south east coast of India

2017 ◽  
Vol 114 (1) ◽  
pp. 134-143 ◽  
Author(s):  
Dibyendu Rakshit ◽  
Gouri Sahu ◽  
Ajit Kumar Mohanty ◽  
Kamala Kanta Satpathy ◽  
M.P. Jonathan ◽  
...  
Keyword(s):  
Water Quality ◽  
Tamil Nadu ◽  
East Coast ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
East Coast Of India ◽  
Protozoa Ciliophora

scholarly journals Recently Discovered Iron Anchors from Tamil Nadu, East Coast of India

Ancient Asia ◽  
2020 ◽  
Vol 11 ◽  
Author(s):  
Sila Tripati ◽  
N. Prabaharan ◽  
Rudra Prasad Behera
Keyword(s):  
Tamil Nadu ◽  
East Coast ◽  
East Coast Of India

scholarly journals Diversity of reef associated fishes in hook and line fishery at Mandapam, Gulf of Mannar, south-east coast of India

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
Molly Varghese ◽  
A. Gandhi
Keyword(s):  
Significant Variation ◽  
Tamil Nadu ◽  
East Coast ◽  
Diversity Index ◽  
Gulf Of Mannar ◽  
Taxonomic Distinctness ◽  
East Coast Of India ◽  
Normal Limits ◽  
Sphyraena Barracuda ◽  
Funnel Plots

Reef associated fishes landed by hooks and lines at Mandapam landing centre in Ramanathapuram District, Tamil Nadu for a period of four years from October 2008 to May 2012 were studied based on fortnightly samplings. The hook and line fishing is seasonal in Gulf of Mannar and lasts for six months annually from October - November to April - May, as this area remains rough during the rest of the year. The average annual landing of fish during the study period was 171 t with a peak of 295 t in 2008-09 and showed a decline since then. A total of 32 species of reef associated fishes belonging to 14 families were landed. Among them, Sphyraena barracuda contributed the maximum with a share of 42% followed by Caranx heberi (15%). Family-wise landings indicated the dominance of Sphyraenidae (46%). The diversity index (H’) was the highest during 2008-09 and the evenness of distribution of individuals among different species did not show significant variation in different years. Funnel plots of average taxonomic distinctness (∆+ ) and variation in taxonomic distinctness (λ+ ) indicated that the values in most of the years are within the normal limits.

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