Modeling impacts of invasive sharp tooth African catfish Clarias gariepinus (Burchell 1822) and Mozambique tilapia Oreochromis mossambicus (Peters, 1852) on the ecosystem of a tropical reservoir ecosystem in India

Khan, M. Feroz; Panikkar, Preetha; Salim, Sibina Mol; Leela, Ramya Vijayakumar; Sarkar, Uttam Kumar; Das, Basanta Kumar; Eregowda, Vijayakumar Muttenahalli

doi:10.1007/s11356-021-14667-y

Cited by 14 publications

(4 citation statements)

References 33 publications

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“…Examinations on the trophic changes following our developed methodology (Singh et al, 2010) owing to invasion of Common Carp and Tilapia showed distinct changes in the food web narrowing down the range of food items available to the fish (Figure 3 A, B). The changes in either primary producers or the input of limiting nutrients by these invasive species have been understood to affect the total energy available to the ecosystem changes and the trophic ladder (Singh et al, 2013a;Gallardo et al, 2016;Khan et al, 2021). Large-scale environmental and habitat alterations may happen on account of climate change, impoundments in aquatic ecosystems.…”

Section: Threats Of Invasionmentioning

confidence: 99%

State of aquatic invasive species in tropical India: An overview

Singh

2021

Aquatic Ecosystem Health &Amp; Management

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India, a megadiverse tropical country is grappling with the rising trend of aquatic invasions. Out of 532 introduced non-native fish, 16 species of freshwater aquaculture and aquarium were assessed invasive by using a risk assessment protocol, ‘Fish Invasiveness Screening Test’. Six major identified invasion pathways of the aquatic invasive species were inadvertent or deliberate releases, escapes, contaminants from hatcheries, river corridors, stowaways and unaided introductions. Invasion mechanism further elucidated the factors promoting successful invasion in freshwater ecosystems. For predictive future performance of invasive fish, the concrete and predictive values based on mean abundance by weight was calculated. Over 28.67% and 29.02 % persistent increased yield of the invasive Tilapia and Common Carp respectively was predicted in the Ganga river in the coming decades. Single species Tilapia invasion facilitated multiple species fish invasion, manifesting in invasion meltdown. The trophic changes due to fish invasion exhibited biotic homogenization with trophic downgrading. Aquatic invasive species were found highly competitive interacting with native species causing serious biodiversity loss, health hazards, and economic damage consequently affecting the ecosystem services. In spite of available regulatory approaches and guidelines to manage aquatic invasive species, fish invasion has been on the rise. This paper suggests modifications and stringent implementation of the existing regulatory mechanisms besides adopting linkages, cutting-edge research on invasion science and modern molecular containment tools for effective management.

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Section: Threats Of Invasionmentioning

confidence: 99%

State of aquatic invasive species in tropical India: An overview

Singh

2021

Aquatic Ecosystem Health &Amp; Management

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“…The order Siluriformes has gained importance in recent years, proving to be a good alternative to the fish commonly used in fish farming worldwide (e.g., tilapia and carp) (Dauda et al, 2018). The most prominent cultured catfish fish is the African catfish Clarias gariepinus (Burchell, 1822) (Siluriformes: Clariidae), but due to the invasive potential of this species, its cultivation can imply risks to natural ecosystems in certain countries (Khan et al, 2021). Thus, to make aquaculture a more sustainable activity and due to the great diversity of species present in this order, the search for native catfish with zootechnical potential has emerged in recent years.…”

Section: Introductionmentioning

confidence: 99%

Co-feeding using live food and feed as first feeding for the small catfish Trachelyopterus galeatus (Linnaeus 1766)

Marinho,

Oliveira,

Mendes

et al. 2024

Arq. Bras. Med. Vet. Zootec.

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This study evaluated the effect of co-feeding with commercial feed and live food (enriched or not with microalgae) on the growth and survival of Trachelyopterus galeatus larvae. Five treatments were carried out: commercial feed as a control (F); brine shrimp nauplii (BS); brine shrimp nauplii enriched with Chaetoceros sp. Microalgae (BSM); combined feed with brine shrimp nauplii (F+BS) and combined feed with brine shrimp nauplii enriched with microalgae (FBSM). The larvae (5.00±0.02 mg and 5.95±0.33mm) were reared for 30 days. There were no significant differences (P>0.05) in water quality between treatments, but there were significant differences in weight, weight gain and survival. The F+BS and F+BSM treatments, which involved co-feeding, showed the best results in final weight (0.168±0.004g and 0.169±0.007g) and weight gain (0.1278±0.004 g and 0.1294±0.007g), respectively. The treatments with live food, enriched or not, showed high survival rates of over 73%, with no significant differences between them. On the other hand, the exclusive use of feed resulted in low survival (36.7 ± 9.53%), indicating that this may result in low growth and make the production of T. galeatus larvae unfeasible.

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“…T. striatulus has served as a biodiversity bioindicator for insects and is also associated with the types of exogenous food in water (dos Santos et al, 2009). On the contrary, C. gariepinus is an exotic fish, dominant in many rivers in Africa, and can occupy various trophic levels (Khan et al, 2021; Low et al, 2022). The interactions for food resources within this environment among catfish species may have implications for environmental health, as they could potentially compete for supplies in this ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Use of trophic ecology of omnivorous fish and abiotic factors as supporting tools for assessing environmental impacts in a neotropical river

Dumith,

Santos

2023

Journal of Fish Biology

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The study of diet is one of the mechanisms by which competition for resources between species that cohabit in the same ecosystem can be inferred. Therefore, the relationships of the indices that measure specialization in the diet of fish species are necessary to characterize the nutritional quality of these populations and the ecosystem's environmental health. Three species of catfish were selected: one invasive (Clarias gariepinus) and two natives (Trachelyopterus striatulus and Rhamdia quelen), with similar distribution along the Guapi‐Macacu River, in the Guapimirim Protection Area (Rio de Janeiro). Fifty‐nine catfish of the three species were collected in total, along 32 collection points in the Guapi‐Macacu River in two periods (dry and rainy) in 2018. Non‐parametric statistics showed the partition of resources between species and the influence of abiotic factors (temperature, pH, transparency, and dissolved oxygen) contributing to the selection of available resources in the environment. Diet‐related indices—repletion index (RI), condition factor (K), niche width, and trophic position (TP) of the specimens collected—contributed to measuring the nutritional status of each of these catfish species, showing that R. quelen has a relationship between RI and K, tending to absorb and metabolize nutrients faster than other species. In addition, the invasive species occupies a wide range of TPs compared to native species, confirming its feeding plasticity. On the contrary, T. striatulus needs large amounts of terrestrial insects to maintain its poor condition factor. Also, the RI showed direct influences of abiotic variables, with the temperature being the most prominent. Our results suggest that the invasive species can benefit from this environment that shows signs of environmental degradation.

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Modeling impacts of invasive sharp tooth African catfish Clarias gariepinus (Burchell 1822) and Mozambique tilapia Oreochromis mossambicus (Peters, 1852) on the ecosystem of a tropical reservoir ecosystem in India

Cited by 14 publications

References 33 publications

State of aquatic invasive species in tropical India: An overview

State of aquatic invasive species in tropical India: An overview

Co-feeding using live food and feed as first feeding for the small catfish Trachelyopterus galeatus (Linnaeus 1766)

Use of trophic ecology of omnivorous fish and abiotic factors as supporting tools for assessing environmental impacts in a neotropical river

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