Rajeev Raghavan

ORCID: 0000-0002-0610-261X
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About
Contact & Profiles
Research Areas
  • Fish Biology and Ecology Studies
  • Fish Ecology and Management Studies
  • Fish biology, ecology, and behavior
  • Identification and Quantification in Food
  • Marine and fisheries research
  • Aquatic Ecosystems and Biodiversity
  • Ichthyology and Marine Biology
  • Genetic diversity and population structure
  • Coral and Marine Ecosystems Studies
  • Aquatic Invertebrate Ecology and Behavior
  • South Asian Studies and Conflicts
  • Wildlife Ecology and Conservation
  • Amphibian and Reptile Biology
  • Diabetes Management and Research
  • Environmental DNA in Biodiversity Studies
  • Fisheries and Aquaculture Studies
  • Turtle Biology and Conservation
  • Aquatic life and conservation
  • Crustacean biology and ecology
  • Diabetes and associated disorders
  • Species Distribution and Climate Change
  • Ecology and biodiversity studies
  • Genomics and Phylogenetic Studies
  • Transboundary Water Resource Management
  • Agricultural Economics and Practices

Kerala University of Fisheries and Ocean Studies
2016-2025

Government of Kerala
2025

The Royal Wolverhampton NHS Trust
2024

Curtin University
2023

Centre for Cellular and Molecular Biology
2022

Freshwater Biological Association
2014-2021

International Union for Conservation of Nature (United States)
2021

Baylor College of Medicine
2020

Zoo Outreach Organisation
2012-2018

Victoria and Albert Museum
2007-2015

Alain Maasri Sonja C. Jähnig Mihai Adamescu Rita Adrian Claudio Baigún and 91 more Donald J. Baird Angelica Batista‐Morales Núria Bonada Lee E. Brown Qinghua Cai João Vitor Campos‐Silva Viola Clausnitzer Topiltzin Contreras‐MacBeath Steven J. Cooke Thibault Datry Gonzalo Delacámara Luc De Meester Klaus‐Douwe B. Dijkstra Van Tu Sami Domisch David Dudgeon Tibor Erős Hendrik Freitag Joerg Freyhof Jana Friedrich Martin Friedrichs‐Manthey Juergen Geist Mark O. Gessner Peter Goethals Matthew Gollock Christopher Gordon Hans‐Peter Grossart Georges Gulemvuga Pablo E. Gutiérrez‐Fonseca Peter Haase Daniel Hering Hans Jürgen Hahn Charles P. Hawkins Fengzhi He Jani Heino Virgilio Hermoso Zeb Hogan Franz Hölker Jonathan M. Jeschke Meilan Jiang Richard K. Johnson Gregor Kalinkat Bakhtiyor Karimov Aventino Kasangaki Ismael A. Kimirei Bert Kohlmann Mathias Kuemmerlen Jan J. Kuiper Benjamin Kupilas Simone D. Langhans Richard V. Lansdown Florian Leese Francis S. Magbanua Shin‐ichiro S. Matsuzaki Michael T. Monaghan Levan Mumladze Javier Muzón Pierre A. Mvogo Ndongo Jens C. Nejstgaard Oxana Nikitina Clifford A. Ochs Oghenekaro Nelson Odume Jeffrey J. Opperman Harmony Patricio Steffen U. Pauls Rajeev Raghavan Alonso Ramírez Bindiya Rashni Vere Ross‐Gillespie Michael J. Samways Ralf B. Schäfer Astrid Schmidt‐Kloiber Ole Seehausen Deep Narayan Shah Subodh Sharma Janne Soininen Nike Sommerwerk Jason D. Stockwell Frank Suhling Ram Devi Tachamo Shah Rebecca E. Tharme James H. Thorp David Tickner Klement Tockner Jonathan D. Tonkin Mireia Valle Jean Ricardo Simões Vitule Martin Völk Ding Wang Christian Wolter Susanne Worischka

Global freshwater biodiversity is declining dramatically, and meeting the challenges of this crisis requires bold goals mobilisation substantial resources. While reasons are varied, investments in both research conservation lag far behind those terrestrial marine realms. Inspired by a global consultation, we identify 15 pressing priority needs, grouped into five areas, an effort to support informed stewardship biodiversity. The proposed agenda aims advance globally as critical step improving...

10.1111/ele.13931 article EN cc-by-nc Ecology Letters 2021-12-01

Abstract Freshwater biodiversity, from fish to frogs and microbes macrophytes, provides a vast array of services people. Mounting concerns focus on the accelerating pace biodiversity loss declining ecological function within freshwater ecosystems that continue threaten these natural benefits. Here, we catalog nine fundamental ecosystem biotic components indigenous provide people, organized into three categories: material (food; health genetic resources; goods), non‐material (culture;...

10.1002/wat2.1633 article EN cc-by Wiley Interdisciplinary Reviews Water 2023-02-08

The Emergency Recovery Plan for freshwater biodiversity recognizes that addressing nonnative species is one of six principal actions needed to bend the curve in loss. This because introduction rates continue accelerate globally and where these develop invasive populations, they can have severe impacts on biodiversity. most effective management measure protect prevent introductions species. Should a be introduced, however, then its early detection implementation rapid reaction measures avoid...

10.1139/er-2022-0103 article EN cc-by Environmental Reviews 2023-01-11
Catherine Overed-Sayer Eresha Fernando Randall R. Jiménez Nicholas B. W. Macfarlane Giovanni Rapacciuolo and 83 more Monika Böhm Thomas M. Brooks Topiltzin Contreras‐MacBeath Neil A. Cox Ian Harrison Michael Hoffmann Richard K. B. Jenkins Kevin G. Smith Jean-Christophe Vié John C. Abbott David J. Allen Gerald R. Allen Violeta Barrios Jean‐Pierre Boudot Savrina F. Carrizo Patrícia Charvet Viola Clausnitzer Leonardo Congiu Keith A. Crandall Neil Cumberlidge Annabelle Cuttelod James Dalton Adam G. Daniels Sammy De Grave Geert De Knijf Klaas‐Douwe B. Dijkstra Rory A. Dow Jörg Freyhof Nieves García Joern Gessner Abebe Getahun Claudine Gibson Matthew Gollock Michael I. Grant Alice E. R. Groom Michael P. Hammer Geoffrey A. Hammerson Craig Hilton‐Taylor Laurel Hodgkinson Robert A. Holland Rima W. Jabado Diego Juffe‐Bignoli Vincent J. Kalkman Bakhtiyor Karimov Jens Kipping Maurice Kottelat Philippe Lalèyé Helen K. Larson Mark Lintermans Federico Lozano Arne Ludwig Timothy J. Lyons Laura Máiz-Tomé Sanjay Molur Heok Hee Ng Catherine Numa Amy F. Palmer-Newton Charlotte Pike Helen Pippard Carla Natacha Marcolino Polaz Caroline M. Pollock Rajeev Raghavan Peter S. Rand Tsilavina Ravelomanana Roberto Esser dos Reis Cassandra L. Rigby Janet L. Scott Paul Skelton Matthew R. Sloat Jos Snoeks Melanie L. J. Stiassny Heok Hui Tan Yoshinori Taniguchi Eva B. Thorstad Marcelo F. Tognelli Armi G. Torres Yan Torres Denis Tweddle Katsutoshi Watanabe James R.S. Westrip Emma G. E. Wright E Zhang W.R.T. Darwall

Abstract Freshwater ecosystems are highly biodiverse 1 and important for livelihoods economic development 2 , but under substantial stress 3 . To date, comprehensive global assessments of extinction risk have not included any speciose groups primarily living in freshwaters. Consequently, data from predominantly terrestrial tetrapods 4,5 used to guide environmental policy 6 conservation prioritization 7 whereas recent proposals target setting freshwaters use abiotic factors 8–13 However,...

10.1038/s41586-024-08375-z article EN cc-by Nature 2025-01-08

In his work on the fishes of Andaman Islands, Francis Day (1870) collected large-sized specimens Aplocheilus from south Andamans. Despite differences in size and dorsal-fin ray counts, refrained recognising as a distinct species considered it panchax, distributed Ganges delta across eastern coast mainland India. However, mentioned fin-ray counts between these two populations. Subsequently Köhler (1906) described population Haplochilus andamanicus (now Aplocheilus), referring to diagnostic...

10.11646/zootaxa.4382.1.6 article EN Zootaxa 2018-02-20

Aenigmachanna gollum, new genus and species, is described from Kerala, South India. It the first subterranean species of family Channidae. has numerous derived unique characters, separating it both Asian Channa Scopoli African Parachanna Teugels Daget. Uniquely among channids, A. gollum a very slender (maximum body depth only 11.1-11.3% SL), eel-like (head length 20.8-21.6% large mouth (jaw 60.4-61.1 % HL), 43-44 anal-fin rays, 83-85 scales in lateral series, an unusual colour pattern lacks...

10.11646/zootaxa.4603.2.10 article EN Zootaxa 2019-05-09

The mahseer fishes (Tor spp.) represent an iconic genus of large-bodied species the Cyprinidae family. Across 16 recognised in genus, individual fish can attain weights over 50 kg, resulting some being considered as premier sport fishes. Tor also generally have high religious and cultural significance throughout South Southeast Asia. Despite their economic importance, status has been increasingly imperilled through riverine habitats impacted by anthropogenic activities, such hydropower dam...

10.1007/s11160-019-09566-y article EN cc-by Reviews in Fish Biology and Fisheries 2019-05-02

A new genus and species of Euryrhynchidae is described from Kerala, India. This freshwater shrimp family was previously only known northern South America West Africa. Although the inclusion in unequivocal (e.g. shape accessory ramus antennular flagellum, frontal margin carapace, telson ornamentation), presence a number unique characters makes relative placement within unclear, but likely basal to other genera. The can be easily distinguished all others by these characters, e.g. upper...

10.11646/zootaxa.4462.3.4 article EN Zootaxa 2018-08-28

Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world's oceans, within lakes and rivers, between two realms, transporting matter, energy, other species (e.g. microbes) across boundaries. therefore process responsible for myriad ecosystem services. Many human populations depend on presence predictable migrations fish their subsistence livelihoods. Although much research has focused migration, questions remain in our rapidly...

10.3389/fevo.2019.00286 article EN cc-by Frontiers in Ecology and Evolution 2019-08-19

A unique, new species of eel loach, Pangio bhujia, is described from Kerala, India. It the first to be subterranean waters. possesses several unusual characters including absence both dorsal and pelvic fins, presence only 3 pectoral-fin rays, 6 anal-fin rays a unique count 38 precaudal + 24 caudal vertebrae.

10.11646/zootaxa.4683.1.8 article EN Zootaxa 2019-10-07

Abstract Groundwater is a vital ecosystem of the global water cycle, hosting unique biodiversity and providing essential services to societies. Despite being largest unfrozen freshwater resource, in period depletion by extraction pollution, groundwater environments have been repeatedly overlooked conservation agendas. Disregarding importance as an ignores its critical role preserving surface biomes. To foster timely groundwater, we propose elevating concept keystone species into realm...

10.1111/gcb.17066 article EN cc-by-nc Global Change Biology 2023-12-12

The 2022 United Nations (UN) Biodiversity Conference of the Parties (COP) to UN Convention on Biological Diversity (CBD) recognized for first-time 'inland waters' as a distinct realm in terms setting targets and process monitoring conserving them their biodiversity.It is common environmentalists environmental scholars bemoan things that they care about, but have been forgotten, ignored, or excluded when it comes decisions, development policy.Often those concerns focus specific taxonomic...

10.1371/journal.pstr.0000065 article EN cc-by PLOS Sustainability and Transformation 2023-05-17

Snakehead fishes of the family Channidae are predatory freshwater teleosts from Africa and Asia comprising 38 valid species. Snakeheads important food (aquaculture, live trade) have been introduced widely with several species becoming highly invasive. A channid barcode library was recently assembled by Serrao co-workers to better detect identify potential established invasive snakehead outside their native range. Comparing our own recent phylogenetic results this taxonomically confusing...

10.1371/journal.pone.0184017 article EN cc-by PLoS ONE 2017-09-20

An investigation integrating morphological and molecular data to address the taxonomic status of Indian Channa marulius-like fishes reveals presence two species within Rivers. As a consequence, pseudomarulius is resurrected as valid removed from synonymy C. marulius. appears be restricted southern Western Ghats region peninsular India can distinguished more widespread marulius by fewer lateral-line scales, dorsal- anal-fin rays, vertebrae, difference about 8% in mitochondrial cytochrome c...

10.11646/zootaxa.4299.4.4 article EN Zootaxa 2017-07-31

For millennia humans have extracted biological and physical resources from the planet to sustain societies enable development of technology infrastructure. Growth in human population changing consumption patterns increased footprint on ecosystems their biodiversity, including fresh waters. Freshwater biodiversity face many threats it is now widely accepted that we are a crisis. One means protecting restoring freshwater better manage exploitation biota aggregate (e.g., sand, gravel,...

10.1139/er-2022-0118 article EN Environmental Reviews 2023-08-02

Rivers, wetlands, lakes, and other freshwater ecosystems collectively cover only 1% of the Earth's surface. Yet, these support a disproportionately large vast array biodiversity. Currently, face many threats, including pollution, habitat alteration, fragmentation, invasive species, overexploitation, overabstraction, climate change, emerging stressors. According to World Wide Fund for Nature's Living Planet Index, biodiversity are considered among most threatened on planet, with average...

10.1016/s2542-5196(23)00275-9 article EN cc-by-nc-nd The Lancet Planetary Health 2024-01-01

Notwithstanding the human suffering caused by COVID-19, response (e.g. shelter-in-place orders) has yielded some tangible environmental benefits such as substantial improvements in air and water quality (Corlett et al., 2020). In India, this manifested heavily polluted rivers now running clear for first time decades with, example, reports suggesting that of River Ganges improved sufficiently to support safe bathing. Hidden beneath these brighter stories however, COVID-19 is also intensifying...

10.1002/aqc.3416 article EN cc-by Aquatic Conservation Marine and Freshwater Ecosystems 2020-06-01
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