Chatragadda Ramesh

Ministry of Earth Sciences

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Koushik Sadhukhan

Ministry of Earth Sciences

M. V. Ramana Murthy

Ministry of Earth Sciences

T. Shunmugaraj

Ministry of Earth Sciences

Laurent Dufossé

Observatoire des Sciences de l'Univers de la Réunion

R. Mohanraju

Pondicherry University

P. Karthick

Pondicherry University

T. Shanmugaraj

Ministry of Earth Sciences

R. Kirubagaran

National Institute of Ocean Technology

Nambali Valsalan Vinithkumar

National Institute of Ocean Technology

Anwesh Maile

Regional Medical Research Centre

Cooperative Institutions

Ministry of Earth Sciences

Pondicherry University

Indian Veterinary Research Institute

National Institute of Oceanography

ICAR - National Meat Research Institute

Government of India

National Centre for Sustainable Coastal Management

Integrated Coastal and Marine Area Management Project Directorate

Andhra University

Écologie Marine Tropicale des Océans Pacifique et Indien

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Naturally Fluorescent Field Mouse, Mus booduga (Gray, 1837) and Common House Gecko, Hemidactylus frenatus (Schlegel, 1836) as Model Organisms for Biomedical Studies

National Academy Science Letters (2022)

Chatragadda Ramesh

Aequorea victoria

10.1007/s40009-022-01138-2

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Citations (1)

Report on Death of Dwarf Sperm Whale, Kogia sima (Order: Cetacea: Family: Kogiidae) in Vedalai Shore of Mandapam, Gulf of Mannar

Annual Research & Review in Biology (2022)

Koushik Sadhukhan Chatragadda Ramesh T. Shanmugaraj M. V. Ramana Murthy Suma Satish

Aims: Present study aims to highlight an accidental death of a male Dwarf Sperm Whale scientifically known as Kogia sima which found to be as Least Concern (LC) as per IUCN Red List data. Kogia sima represents important higher trophics of marine ecosystem which faced the several threats and conservation need in Gulf of Mannar, India. Study Design: The study undertaken during extensive coral reef monitoring survey was carried out in Gulf of Mannar under the CRAM Project of National Centre for Coastal Research (NCCR). The present report emphasize the Morphometric observation of the dead Kogia sima and try to find out possible cause of death by examining in situ investigation. Place and Duration of Study: The field study was taken in Vedalai Sea shore (N09°15.626’, E79°04.977’) under the Mandapam Union of Ramnathapuram District of Tamil Nadu. The male whale specimen was found on 5th May, 2019 lying dead on the sandy seashore. Methodology: Animal was photographed and morphological attributes were measured to identify the specimen. Several injuries have been highlighted in the paper which helps in investigating the cause of death. Results: The Dwarf Sperm Whale was infant and has mild damage on the mouth parts including scuff off skin from the body and severe blood clotting at major part of the right side near to pectoral fin. Death of this infant is not clear but it is assumed that the male infant has lost from his parents and came to the inshore area of Mandapam where it gets stuck with running boat or boulder rocks as this immature whale limits its diving capabilities. The necessary morphological characters and measures have been listed in Table 1. Conclusion: This unfortunate death clearly indicated that acute information on ecological behavior of Dwarf Sperm Whale is still under data collection stage in India and that previous conservation efforts in country must be reviewed in terms of role of local authorities, live stranded cetaceans and hunting or incidental killing which in future can build a road map for effective action plans to save this marine mammal.

Velvet

Sima

10.9734/arrb/2022/v37i130475

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Hypersalinity and Low Nitrogen Levels Cause Dwarf Growth in Mangrove Avicennia marina (Forssk.) Vierh.

Proceedings of the National Academy of Sciences India Section B Biological Sciences (2024)

Chatragadda Ramesh Muthukumar Chandrasekaran Koushik Sadhukhan T. Shunmugaraj Murthy Mallavarapu Venkata Ramana

Avicennia marina

Aerial root

Avicennia

10.1007/s40011-023-01532-w

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Enhanced therapeutic efficacy of biogenic nanosilver-conjugated thymol: In vitro and in vivo evaluation against emerging multi-drug resistant microbes

Journal of Drug Delivery Science and Technology (2023)

Vemula Prasastha Ram Jyothsna Yasur Padikkamannil Abishad Chatragadda Ramesh Diksha Gourkhede

Thymol

Galleria mellonella

10.1016/j.jddst.2023.104741

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Photographic evidence of rare gelatinous egg masses of bristle worm (Annelida: Polychaeta) from Mandapam group of Islands.

JOURNAL OF EXPERIMENTAL ZOOLOGY INDIA (2019)

Koushik Sadhukhan Chatragadda Ramesh T. Shanmugaraj M. V. Ramana Murthy

Bristle

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Occurrence of unusual swarm of soldier crab, Dotilla myctiroides (H. Milne Edwards, 1852) in Gulf of Mannar, Southeast Coast of India

emergent Life Sciences Research (2019)

Chatragadda Ramesh Koushik Sadhukhan T. Shunmugaraj M. V. Ramana Murthy

10.31783/elsr.2019.516366

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Occurrence of fine scale to massive green tides in coastal waters of Palk Bay and Gulf of Mannar regions, southeast coast of Tamil Nadu, India

Journal of the Marine Biological Association of India (2020)

Chatragadda Ramesh Koushik Sadhukhan T. Shunmugara M. V. Ramana Murthy

Tamil

10.6024/jmbai.2020.62.2.2132-19

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Ecological and Biotechnological Aspects of Pigmented Microbes: A Way Forward in Development of Food and Pharmaceutical Grade Pigments

Microorganisms (2021)

Chatragadda Ramesh Laurent Dufossé

Microbial pigments play multiple roles in the ecosystem construction, survival, and fitness of all kinds of organisms. Considerably, microbial (bacteria, fungi, yeast, and microalgae) pigments offer a wide array of food, drug, colorants, dyes, and imaging applications. In contrast to the natural pigments from microbes, synthetic colorants are widely used due to high production, high intensity, and low cost. Nevertheless, natural pigments are gaining more demand over synthetic pigments as synthetic pigments have demonstrated side effects on human health. Therefore, research on microbial pigments needs to be extended, explored, and exploited to find potential industrial applications. In this review, the evolutionary aspects, the spatial significance of important pigments, biomedical applications, research gaps, and future perspectives are detailed briefly. The pathogenic nature of some pigmented bacteria is also detailed for awareness and safe handling. In addition, pigments from macro-organisms are also discussed in some sections for comparison with microbes.

10.3390/microorganisms9030637

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Occ urrence of a rare lamellarid, Coriocella hibyae (Wellens, 1991) from Andaman Islands

Chatragadda Ramesh R. Mohanraj K. Narasimha Murthy P. Karthick Sumantha Narayana

In the present study the occurrence of a rare lamellibranch Coriocella hibyae from Andaman Islands is being reported. Three samples of C. hibyae were found in an undisturbed shallow water coral reef region in Burmanallah and the biology of this species is described and identified based on their internal shell and radula structures as C. hibyae which has been first described by Wellens (1991) from the Republic of Maldives.

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Exhibition of bleaching resistance via adaptive bleaching pattern by coral reefs of the Gulf of Mannar during massive bleaching event 2019

Journal of Marine Science (2020)

Chatragadda Ramesh Koushik Sadhukhan T. Shunmugaraj M. V. Ramana Murthy

Coral reefs in the Gulf of Mannar (GoM) and Palk Bay regions are facing potential threats from climate change, sedimentation and anthropogenic activities. Considerably, coral reefs in these two regions are highly damaged due to frequent bleaching events caused by increased sea surface temperature (SST) recorded over the past two decades. Recently, during February to May 2019, mass bleaching event of corals was documented again in GoM and Palk Bay regions due to increased sea surface temperatures ranged between 32°C to 36°C. Despite of completely bleached corals, some coral colonies of the same bleached coral species have displayed adaptive bleaching pattern (ABP) for survival. This incidence is displayed by the symbiotic zooxanthellae to protect coral polyps from environmental stress such as elevated temperatures. These observations infer that coral colonies with preferential bleaching pattern ability would serve as environmental stress resisting coral colonies which can be used for restoration activities and cryopreservation. Further studies are needed to explain the potential mechanisms or specific environmental drivers responsible for ABP.

Coral bleaching

Zooxanthellae

Anthozoa

10.30564/jms.v2i2.1666

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Citations (5)