Community-Based 16S rDNA Fingerprinting Analysis of Geographically Distinct Marine Sediments of Unexplored Coastal Regions of Palk Bay and Gulf of Mannar

2022 ◽  
Vol 79 (2) ◽  
Author(s):  
Chairmandurai Aravindraja ◽  
Dharmaprakash Viszwapriya ◽  
Alaguvel Valliammai ◽  
Shunmugiah Karutha Pandian
Keyword(s):  
16S Rdna ◽  
Marine Sediments ◽  
Gulf Of Mannar ◽  
Coastal Regions ◽  
Community Based ◽  
Fingerprinting Analysis ◽  
Palk Bay

Production of Novel Bioactive Compounds by the Bacteria Associated with Some Marine Sponges of Gulf of Mannar and Palk Bay, Southeast Coast of India

2018 ◽  
Vol 6 (8) ◽  
pp. 183
Author(s):  
V. Ramadas ◽  
G. Chandralega
Keyword(s):  
Bioactive Compounds ◽  
Bacterial Species ◽  
Marine Sponges ◽  
Marine Organisms ◽  
Gulf Of Mannar ◽  
Bacterial Symbionts ◽  
Palk Bay ◽  
Excellent Source

Sponges, exclusively are aquatic and mostly marine, are found from the deepest oceans to the edge of the sea. There are approximately 15,000 species of sponges in the world, of which, 150 occur in freshwater, but only about 17 are of commercial value. A total of 486 species of sponges have been identified in India. In the Gulf of Mannar and Palk Bay a maximum of 319 species of sponges have been recorded. It has been proved that marine organisms are excellent source of bioactive secondary metabolites and number of compounds of originated from marine organisms had been reported to possess in-vitro and in-vivo immuno stimulatory activity. Extracts from 20 sponge species were tested for bacterial symbionts and bioactive compounds were isolated from such associated bacterial species in the present study.

scholarly journals Blue carbon stock of the seagrass meadows of Gulf of Mannar and Palk Bay off Coromandel Coast, south India

2020 ◽  
Vol 67 (4) ◽  
Author(s):  
P. Kaladharan ◽  
P.U. Zacharia ◽  
S. Thirumalaiselvan ◽  
A. Anasukoya ◽  
Lavanya Ratheesh ◽  
...  
Keyword(s):  
Carbon Stock ◽  
South India ◽  
Blue Carbon ◽  
Gulf Of Mannar ◽  
Organic Carbon Content ◽  
Seagrass Meadows ◽  
Soil Carbon Density ◽  
Palk Bay ◽  
Syringodium Isoetifolium ◽  
Coromandel Coast

Blue carbon stock of the seagrass meadows of Gulf of Mannar and Palk Bay, off Coromandel Coast, south India, were computed from the organic carbon content and dry bulk densities of sediment core taken from the seagrass meadows of these two ecosystems. The Gulf of Mannar (GoM) and Palk Bay (PB) harbour 13 seagrass species dominated by Cymodocea serrulata and Syringodium isoetifolium. The soil carbon density of both GoM and PB were higher in subsurface cores. The blue carbon stock of seagrass meadows of the GoM was estimated as 0.001782 Tg and that of PB as 0.043996 Tg. The estimated value of blue carbon stored in seagrass meadows of GoM was 17820 US$ and that of PB was 43,99,682 US$. The results of this study are discussed in the light of climate change mitigation, emphasising the need to conserve these underwater meadows.

Ocean currents structuring the mesozooplankton in the Gulf of Mannar and the Palk Bay, southeast coast of India

2013 ◽  
Vol 110 ◽  
pp. 27-48 ◽  
Author(s):  
L. Jagadeesan ◽  
R. Jyothibabu ◽  
A. Anjusha ◽  
Arya P. Mohan ◽  
N.V. Madhu ◽  
...  
Keyword(s):  
Ocean Currents ◽  
Gulf Of Mannar ◽  
Southeast Coast Of India ◽  
Southeast Coast ◽  
Palk Bay

Distribution of the Platypus (Ornithorhynchus anatinus) in New South Wales: Results of The 1994-96 New South Wales Rivers Survey.

1999 ◽  
Vol 21 (2) ◽  
pp. 177
Author(s):  
T.R. Grant ◽  
P.C. Gehrke ◽  
J.H. Harris ◽  
S. Hartley
Keyword(s):  
New South ◽  
New South Wales ◽  
Wide Distribution ◽  
Native Fish ◽  
Coastal Regions ◽  
Community Based ◽  
South Wales ◽  
Ornithorhynchus Anatinus ◽  
The Stability ◽  
Population Numbers

Data from the New South Wales Rivers Survey on the occurrence of platypuses have provided the most recent and comprehensive record of platypus distribution in the State. The species was most commonly reported from the montane and coastal regions, being less common on the western slopes and uncommon in the rivers of the western lowlands. The observations confirmed those from earlier community-based surveys. In contrast to the distribution of native fish species, there appears to have been little change in the overall state-wide distribution of the platypus in response to degrading processes in the rivers of New South Wales, although nothing is known of the stability of their population numbers.

scholarly journals Distribution Pattern of Seahorse species (Genus: Hippocampus) in Tamilnadu and Kerala Coasts of India

2013 ◽  
Vol 5 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Aaron Premnath LIPTON ◽  
Muthusamy THANGARAJ
Keyword(s):  
Dominant Species ◽  
Body Shape ◽  
Tail Length ◽  
Gulf Of Mannar ◽  
Meristic Characters ◽  
Trunk Length ◽  
Snout Length ◽  
Shrimp Trawl ◽  
Palk Bay ◽  
By Catch

The survey along the Tamilnadu and Kerala coats of India reveled that six species of seahors (Hippocampus fuscus, H. kelloggi, H. kuda, H. histrix H. mohnikei and H. trimaculatus) were distributed with different density. Out of the six species, H. fuscus, H. kuda and H. trimaculatus, were the commonly available species in all the observed areas. In Palk Bay, H. kuda was the dominant species constituting 49.10% of the total seahorses encountered. Hippocampus trimaculatus was the second dominant species which accounting 39.28%. The Gulf of Mannar region also most abounded with H. kuda (68.98%) followed by H. trimaculatus (20.80%), H. fuscus (9.80%), H. kelloggi (2.23%) and H. histrix (0.37%). In Kerala coast, H. trimaculatus was the dominant species (79.68%) followed by H. kuda (9.89%), H. kelloggi (8.33%) and H. fuscus (2.08%). To infer the variation of six seahorse species the morphometric and meristic characters were analysed. The important morphometric and meristic characters are trunk rings, tail rings, pectoral and dorsal fin rays, trunk length, tail length, coronet height, head length, snout length, snout depth and head depth. Variation in overall body shape, relative snout length, coronet height, number of tail ring was sufficient to separate the specimens to Hippocampus fuscus, H. kelloggi, H. kuda, H. histrix H. mohnikei and H.trimaculatus. The species density and diversity depends on the habitat and biogeography of those areas. Majority of seahorse fishing in Tamilnadu was by shrimp trawl, by-catch and very few target catch by divers also seen in some villages of Palk Bay and Gulf of Mannar region. The shrimp trawl by-catch only bringing more H. trimaculatus than the other species in Kerala coasts.

Trophic efficiency of plankton food webs: Observations from the Gulf of Mannar and the Palk Bay, Southeast Coast of India

2013 ◽  
Vol 115-116 ◽  
pp. 40-61 ◽  
Author(s):  
A. Anjusha ◽  
R. Jyothibabu ◽  
L. Jagadeesan ◽  
Arya P. Mohan ◽  
K. Sudheesh ◽  
...  
Keyword(s):  
Food Webs ◽  
Gulf Of Mannar ◽  
Southeast Coast Of India ◽  
Southeast Coast ◽  
Palk Bay

scholarly journals Hydrocarbon-Degrading Bacterial Strain Pseudomonas mendocina Newly Isolated from Marine Sediments and Seawater of Oran Harbor (Algerian Coast)

2020 ◽  
Vol 2 (2) ◽  
pp. 22-29
Author(s):  
Bendadeche Medjahed Faiza
Keyword(s):  
Energy Source ◽  
Growth Rate ◽  
Crude Oil ◽  
16S Rdna ◽  
Marine Sediments ◽  
Growth Kinetic ◽  
Culture Conditions ◽  
Pseudomonas Mendocina ◽  
Degrading Bacterium ◽  
Nacl Concentration

Contamination by petroleum hydrocarbons causes serious dangers to human health and the environment, whether by accidental or chronic contamination. Due to the large flow of ships, the commercial harbor of Oran is subject to pollution particularly by polycyclic aromatic hydrocarbons. For that, bioremediation by indigenous microorganisms is the most important method to eliminate or decrease this contamination. In the present paper, hydrocarbon-degrading bacterium strain SP57N has been studied, newly isolated from contaminated marine sediments and sea water from the harbor of Oran (Northwestern-Algeria), using of Bushnell-Hass salt medium (BHSM). The strain SP57N was Gram-negative, oxidase negative, catalase negative, motile, Rod-shaped bacteria, identified molecularly as Pseudomonas mendocina based on partial 16S rDNA gene sequence analysis, using the BLAST program on National Centre for Biotechnology Information (NCBI) and the EzBioCloud 16S rDNA databases. This isolate could growth on high concentrations of crude oil (up to 10 %, v/v). The effects of some culture conditions such as temperature, NaCl concentration and pH on growth rate of strain SP57N on crude oil as the sole carbon and energy source were studied. In addition, growth kinetic of this isolate on crude oil during 20 days of culture at 140 rpm, under optimal culture conditions was considered. The results showed maximum growth rate at temperature 25°C, 3% (w/v) of NaCl concentration and pH 7. Results of growth kinetic on crude oil as sole carbon and energy source showed that the stationary phase was attained at day 12. Thus, Pseudomonas mendocina SP57N had effectively hydrocarbon-degrading potential, and could be used as an efficacy degrader to initiate a biological eco-friendly method for the bioremediation of the hydrocarbon pollution on the port of Oran, and marine environment.

scholarly journals Participatory Approach of Fisherwomen in Crab Fattening for Alternate Income Generation in Tuticorin, Southeast Coast of India

2005 ◽  
Vol 18 (2) ◽  
Author(s):  
J. PATTERSON ◽  
V.D. SAMUEL
Keyword(s):  
Leisure Time ◽  
Participatory Approach ◽  
Scylla Serrata ◽  
Gulf Of Mannar ◽  
Income Generation ◽  
Swimming Crab ◽  
Mud Crab ◽  
Community Based ◽  
Portunus Pelagicus ◽  
Participation Of Women

A community-based crab-fattening project was adopted by the womenfolk of Vellapatti fishing village in Tuticorin coast, Gulf of Mannar for proper utilization of their available resources and their leisure time for income generation. The mud crab, Scylla serrata and blue swimming crab, Portunus pelagicus were chosen for crab fattening which is ‘First of its kind’ in India and the women are successful in fattening and creating alternate income through this project. Between these two crabs, fattening of P. pelagicus is more attractive due to the short fattening span and the low price quoted on molted crabs at the auction sheds. The participation of women and the effectiveness of this project are discussed in this paper.

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