Fish distribution and assemblage structure in a hydrologically fragmented tropical estuary on the south-west coast of India

Roshni, Kuttanelloor; Renjithkumar, Chelapurath Radhakrishnan; Raghavan, Rajeev; Ranjeet, Kutty

doi:10.1016/j.rsma.2021.101693

Cited by 18 publications

(7 citation statements)

References 35 publications

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“…Many of the species recorded during this study have also been recorded from other Indian estuaries (Bijukumar & Sushama 2000;Ghosh et al 2011;Mohanty et al 2015;Bhattacharya et al 2018;Sreekanth et al 2020;Roshni et al 2021). A number of freshwater species belonging to orders Cypriniformes and Siluriformes were recorded from the mangrove creeks.…”

Section: Diversity and Distribution Of Fishes In The Estuarysupporting

confidence: 66%

An overview of the fish diversity and their threats in the Gowthami-Godavari Estuary in Andhra Pradesh, India

2022

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The fish diversity of different estuarine habitats of the Gowthami-Godavari River was studied from 2014 to 2017. We recorded 231 species of finfishes belonging to 27 orders, 81 families, and 167 genera. Perciformes was the most speciose order, followed by Carangiformes and Clupeiformes. Of the 231 species, one is an Endangered species (Silonia childreni), three are Vulnerable (Tenualosa toli, Cirrhinus cirrhosis, and Wallago attu), three are Near Threatened, and 11 are Data Deficient species. We also recorded five exotic species from the study area, of which Oreochromis mossambicus was the most dominant. The major threats, including potential impacts of river regulation and climate change on the estuarine habitats of Gowthami-Godavari, are also discussed.

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Section: Diversity and Distribution Of Fishes In The Estuarysupporting

confidence: 66%

An overview of the fish diversity and their threats in the Gowthami-Godavari Estuary in Andhra Pradesh, India

2022

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“…Bijukumar & Sushama (2000) presented an overview of the ichthyofauna of the Ponnani estuary representing 112 finfish species belonging to 14 orders, 53 families, and 80 genera. Kurup & Samuel (1987) recorded 150 species of fishes from Vembanad lake, while a recent study by Roshni et al (2021) reported 90 species of fish belonging to 17 orders and 40 families suggesting a 40% reduction in fish fauna since 1980s. Raj et al (2014) reported 68 species of finfishes, five species of crabs, nine species of prawns from the Ashtamudi estuary, and stated that pearlspot and mullets supported good local fisheries.…”

Section: Monodactylus Argenteusmentioning

confidence: 99%

“…In Kerala, considerable number of studies have dealt with taxonomic entities within estuarine systems, i.e., species composition, species distribution, and abundance, and spatial and temporal variations in fish diversity (Bijukumar & Sushama 2000;Harikrishnan et al 2011;Regi & Bijukumar 2012;Kiranya et al 2018;Roshni et al 2021;Kiranya et al 2022), with many such studies concentrated on a single estuary, the Vembanad Lake (Kurup & Samuel 1987;Menon et al 2000;Harikrishnan et al 2011;Roshni et al 2021). There is considerable knowledge gap on the fish diversity and distribution patterns in many estuaries of Kerala, notably in the case of smaller systems such as Poonthura estuary, because of their isolated nature (Kiranya et al 2018(Kiranya et al , 2022.…”

Section: Introductionmentioning

confidence: 99%

A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

et al. 2022

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A systematic checklist of fish and shellfishes of the Poonthura estuary, Kerala, India is provided including notes on their conservation status. This checklist includes 66 finfish and five shellfish, belonging to 17 orders, 35 families, and 60 genera. Carangiformes is the richest order (11 species, eight genera, and three families), representing 15.4% of the total fish diversity. Carangidae, is the most diverse family with nine representatives, contributing to 12.6% of the total fish diversity. Following the IUCN Red List Categories, of the total 69 species (excluding both exotic and transplanted fish species), 59 belong to the ‘Least Concern’, while one species Pampus argenteus is listed as ‘Vulnerable’, four are ‘Data Deficient’ (Megalops cyprinoides, Arius maculatus, Cynoglossus semifasciatus, and Epinephelus tauvina) and five are ‘Not Evaluated’ (Nuchequula blochii, Channa pseudomarulius, Penaeus indicus, P. monodon, and Scylla serrata). Around 94% of the recorded fish fauna have commercial value and contribute to subsistence fisheries throughout the year. Taxonomy and diversity of fish fauna of least studied or isolated estuarine ecosystems should be updated with proper documentation of their conservation status, in order to design and implement pragmatic management and conservation programs.

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“…Feeding ecological study in fishes has been conducted worldwide due to its fundamental importance in understanding the role of fish in ecosystem ( e.g., Wootton, 1990 ; Blaber, 2013 ; Baeta & Ramon, 2013 ; Kwak, Klumpp & Park, 2015 ; Ende et al, 2018 ; Lin et al, 2020 ; Dinh et al, 2021 ; Soe et al, 2021 ; Hajisamae et al, 2022 ). Eleutheronema tetradactylum , known as four-finger threadfin, belongs to the family Polynemidae and is mostly found in the estuarine and marine shallow water habitat ( Motomura et al, 2002 ; Nesarul et al, 2014 ; Adelir-Alves et al, 2018 ; Roshni et al, 2021 ). It distributes along the tropical and subtropical coasts of Indo-West Pacific region, from the Gulf of Persia to the Northern part of Australia ( Motomura et al, 2002 ; Ballagh et al, 2012 ; Hena et al, 2011 ; Adelir-Alves et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Feeding habits of four-finger threadfin fish, Eleutheronema tetradactylum, and its diet interaction with co-existing fish species in the coastal waters of Thailand

Iqbal

Hajısamae

Lim

et al. 2023

PeerJ

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This study assessed the feeding habits of four-finger threadfin fish, Eleutheronema tetradactylum, and its diet relationship with other fish species in the tropics. Fish samples were collected from four locations along the coastal regions of Thailand. A whole year field sampling event was conducted to investigate the diet relationship of threadfin fish with other ten co-existing fish species in Pattani Bay during January 2021 and January 2022. E. tetradactylum was an active and specific predator with significant diet shift during ontogeny. Specifically, the juvenile fish fed largely on zooplankton especially Acetes/shrimp postlarvae, and small sized-fish fed on penaeid shrimps, while medium and large-sized fish shifted their diets to a combination of penaeid shrimp, fish and squid. Size and sex of fish as well as site of collection significantly affected gut fullness index and average number of food type (p < 0.05). Transitional sex fish predated almost entirely on other fishes (87.2%), whereas male and female fish fed mainly on penaeid shrimp (66.5%) and other fish (51.3%), respectively. Fish size and mouth opening controlled the size of prey, with the larger fish with larger mouth-opening fed primarily on the larger size of prey. Moreover, E. tetradactylum shared its diets inclusively with Epinephelus coioides, Johnius belangerii, Scomberomorus commerson, Scomberoides lysan, Otolithes ruber and Lutjanus russelli. Penaeid shrimp and teleost fish were the main food types shared by these fishes. This study provided important information on the feeding habits of E. tetradactylum and its diet relationship with other co-existing fish species living in the same habitat of a tropical coastal region.

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Fish distribution and assemblage structure in a hydrologically fragmented tropical estuary on the south-west coast of India

Cited by 18 publications

References 35 publications

An overview of the fish diversity and their threats in the Gowthami-Godavari Estuary in Andhra Pradesh, India

An overview of the fish diversity and their threats in the Gowthami-Godavari Estuary in Andhra Pradesh, India

A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

Feeding habits of four-finger threadfin fish, Eleutheronema tetradactylum, and its diet interaction with co-existing fish species in the coastal waters of Thailand

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