International Conference

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Author: search.filters.author.Rajeev Raghavan

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    IDENTITY AND DISTRIBUTION OF APLOCHEILUSPARVUS, A POORLY-KNOWN FISH FROM SOUTHERN INDIA
    (Unit of Aquatic Biotechnology and Live feed Culture, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, India, 2020-02-27) Sreesha G; Anoop V.K; Rajeev Raghavan; NeeleshDahanukar; Sasikala G
    Killifish are brightly coloured small sexually dimorphic fish within the order Cyprinodontiformes. They have evolved annual life cycles and are diverse with nearly 1400 species worldwide within 14 families of 134 genera. Aplocheilusspp.is the only genus of killifish distributed in India, with six valid and several available names. In this present study, we investigate the identity and distribution of Aplocheilusparvus, a poorly-known species with very little information available after its original description, and questions on its identity and possible synonymy. Using an integrative approach of morphometrics, meristics and molecules, we clearly show the monophyly and distinctiveness of the species and diagnose it from other Aplocheilus species in India. Aplocheilusparvus is one of the smallest species within the genus, with a maximum length of around 40mm.Currently known from the Chembarambakkam Lake in Chennai, we provide updated information on the species distribution with range extending from Chennai to Kanyakumari along the East Coast and Ashtamudi Lake on the west coast of India.
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    WHY DO YOU NEGLECT, IF YOU TRULY KNOW THE BEAUTY?
    (Kerala University of Fisheries and Ocean Science, Kochi, Kerala, India, 2019-11-28) Sreesha G; Anoop V K; Rajeev Raghavan; Sasikala G
    Western Ghats, one of the eight hottest hotspots of global biological diversity, harbors exceptionally high freshwater fish diversity and endemism. Approximately, 320 species of freshwater fishes are known from the Western Ghats of which 60% are endemic to the region and one-third are threatened under various IUCN Red List categories. Getting attention and priority is the primary step for effective species conservation. Species that are perceived as ‘beautiful’ receive more attention than ‘less attractive’ species. Most endemic and threatened fishes of the Western Ghats are not attractive, thereby receiving less or no attention. Here, we expose the beauty of some of the attractive and ‘eye catching’ fishes of Western Ghats to highlight the importance and value of threatened species, that co-occur with them. The present study is an alternative approach of conservation, primarily directed to the designing method inspired from pattern and colouration of fish scales. We use some of the brightly coloured attractive fishes of Western Ghats as a model organism to conserve co-occurring endemic and threatened fishes. Live colouration and scale patterns were used to create digital designs for use in products such as dresses, photo frames, postcards, book covers, mugs, earrings, bracelets, key chains etc. This study is an innovative approach to conserve freshwater fishes of Western Ghats by focusing on species aesthetics. There is an urgent need to raise the attention of people towards less attractive and charismatic species to better appreciate and protect the species that critically support the functional diversity of an ecosystem.
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    FISHES OF VAYAL NADU: ICHTHYODIVERSITY AND CONSERVATION CHALLENGES IN A POORLY KNOWN REGION OF THE WESTERN GHATS
    (Indian Institute of Science, Bengaluru, India, 2019-10-17) Sreesha G; Anoop V K; Sasikala G; Rajeev Raghavan
    Freshwater ecosystem and their biodiversity are the least understood and often overlooked component of global conservation. This study provides the first comprehensive account of the fish diversity of the rivers in the Wayanad hills to inform future conservation and management plans. A combination of methods including extensive field surveys, local ecological knowledge and geospatial threat mapping were done during the year 2013-2018. There were 76 species represented by 10 orders, 23 families and 54 genera. Sixty-four species are native species out of which 35 are endemic to Western Ghats, 6 endemic to Kerala and 3 endemic to Wayanad hills. Ten species comes under threatened, 4 critically endangered, 4 endangered, 2 vulnerable and 2 data deficient category on the IUCN red list. The major threats were pollution, overexploitation, urban development and alien invasive species. The generation of a species checklist and threat maps together with information on the need for policies will help bridge the knowledge gap regarding the ichthyofauna of a biodiversity-rich region of the Southern Western Ghats.