FEEDING INTERACTION OF THE NON-NATIVE AFRICAN CATFISH (Clarias gariepinus BURCHELL, 1822) IN ITANHÉM RIVER ESTUARY, BAHIA, BRAZIL

Rabelo, Leandro Bonesi; Soares, Lucy Satiko Hashimoto

doi:10.1590/s1679-87592014051406203

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…Two exotic and invasive species recorded from the estuary were Oreochromis mossambicus (Mozambique tilapia) and Clarias gariepinus (African catfish) with significant biomass. These species possess a serious threat to the indigenous fish stocks as they have already established themselves in the upper stretches of the estuaries (Grace, 2014;Rabelo et al, 2014). A study is also recommended on the species invasion for aquatic ecosystems of Goa to measure the ecological impacts of their invasions.…”

Section: Resultsmentioning

confidence: 99%

Inventory of fishery resources using participatory research approach in Mandovi Estuary in Central western coast of India

Sreekanth¹,

Rivonkar²,

Mayekar³

et al. 2021

JEB

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Aim: The fisheries resources of Mandovi Estuary, along the central west coast of India were analysed for taxonomic, functional, feeding and population aspects and also to record and prepare an inventory on fish and shellfish species. Methodology: Finfish and shellfish taxa were monitored for four years (2016 to 2020) through surveys in small and regional markets, fishermen surveys, fishing gear samplings, telephonic interviews and photographs. Results: A total of 318 taxa are counted comprising of 169 (53.1%) demersal, 71 (22.3%) pelagic fish, 37 (11.6%), molluscan and 41 (12.9%) crustacean species. The community was dominated by marine immigrants and the freshwater types contributed least to the composition. In the inventory, majority of the resources were of commercial value and this category contributed 70% of total documented species. Even though detailed analyses were required, nearly 2% of the fauna appeared to be endemic to the region. Further, more than 30% species listed were data deficient. Out of 318 species, 10% were unknown in the Mandovi estuary. Interpretation: This data set comprehensively documents the finfish and shellfish diversity of Mandovi estuary from 2016 to 2020. The type of fish assemblage is briefly discussed focusing on the management of these resources in the estuary.

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Section: Resultsmentioning

confidence: 99%

Inventory of fishery resources using participatory research approach in Mandovi Estuary in Central western coast of India

Sreekanth¹,

Rivonkar²,

Mayekar³

et al. 2021

JEB

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“…A similar result was found in a study conducted in the Intahém River Estuary—Bahia (Brazil), where the invasive alien species— C. gariepinus— does not compete for resources with Centropomus spp. (Rabelo & Soares, 2014).…”

Section: Discussionmentioning

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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“…(); 18, Melo et al . (); 19, Sarmento‐Soares & Martins‐Pinheiro (); 20, Rabelo & Soares (); 21, R. G. R. Oliveira (unpubl. data); 22, Cambray (); 23, SAIAB (unpubl.…”

Section: Vectors and Pathwaysmentioning

confidence: 99%

“…Source data: GMR, Glen Melville Reservoir; GFR, Great Fish River and Sundays River (Kadye & Booth, 2012 b ); KRR, Kat River Reservoir and Laing Reservoir (Potts et al ., ); IRE, Itanhem River estuary (Rabelo & Soares, ); Doce River (Mili & Teixeira, ).…”

Section: Diet and Impactsmentioning

confidence: 99%

A review of Clarias gariepinus invasions in Brazil and South Africa

Weyl

Daga

Ellender

et al. 2016

Journal of Fish Biology

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African sharptooth catfish Clarias gariepinus is native to most of Africa and small parts of Asia, but has been introduced to 37 countries mainly for aquaculture. This review of introductions, establishment, spread and impact of C. gariepinus in Brazil and outside of its native range in South Africa provides evidence that the species has been able to overcome all barriers to invasion in both countries. Following initial introductions across geographical barriers, containment seems to have been impossible and escape from aquaculture facilities and spread by illegal introductions is an invasion pathway in both countries. There is evidence of individuals dispersing rapidly following escape, and surviving and reproducing at multiple sites in a wide spectrum of habitats in both countries. There is a severe paucity of research on impacts, many of which are inferred from field and laboratory observations, but have not been demonstrated at population or community level. Such impact studies are urgently required to better understand the consequences of these invasions and to develop appropriate strategies to mitigate impacts and spread.

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FEEDING INTERACTION OF THE NON-NATIVE AFRICAN CATFISH (Clarias gariepinus BURCHELL, 1822) IN ITANHÉM RIVER ESTUARY, BAHIA, BRAZIL

Cited by 8 publications

References 22 publications

Inventory of fishery resources using participatory research approach in Mandovi Estuary in Central western coast of India

Inventory of fishery resources using participatory research approach in Mandovi Estuary in Central western coast of India

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

A review of Clarias gariepinus invasions in Brazil and South Africa

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