First report the role of benthic macroinvertebrates as preys for native fish in Toltén river (38° S, Araucania region Chile)

Barile, Juan; Vega, Rolando; Ríos-Escalante, Patricio De los

doi:10.1590/1519-6984.232661

Cited by 5 publications

(5 citation statements)

References 54 publications

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“…The most numerous species in these sectors were Meridialaris chiloense, Nousia delicata, Pelurgoperla personata and Ceratoperla schwabei, consistent with their environmental requirements for cold, highly oxygenated, turbulent water (Miserendino et al, 2018). These restricted distributions of Ephemeroptera and Plecoptera have been described for Argentinean and Chilean Patagonian river systems (Arenas, 1995;Oyanedel et al, 2008;Moya et al, 2009;Figueroa et al, 2007;Miserendino et al, 2018;De los Ríos-Escalante et al, 2020;Barile et al, 2021).…”

Section: Discussionsupporting

confidence: 63%

“…Few studies have been carried out in the rivers of Patagonian Chile (Figueroa et al, 2003, Moya et al, 2009Fierro et al, 2015;De los Ríos-Escalante et al, 2020;Barile et al, 2021), with some benthic studies based on stomach contents studies (Vargas et al, 2010;Barile et al, 2021); moreover, these descriptions are based on taxonomic categories rather than species-level identification. The Bíobío river is the only reference fluvial system in Chile for which the benthic and fish communities have been described (Arenas 1995).…”

Section: Sampling Proceduresmentioning

confidence: 99%

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Macrozoobenthos in an altitudinal gradient in North Patagonian Cautín River (Araucanía Region, Chile)

Figueroa

Ríos-Escalante

2022

Braz. J. Biol.

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The Cautín River is closely related with the economic development of Temuco city, (38°S; Chile). Existing knowledge of the Cautín River is limited to information about its biological characteristics as a reference for the evaluation and assessment of water quality. The object of this study was to develop taxonomic characterisation of the benthic macroinvertebrates along the main course of the Cautín River, and to study the community structure using correlation analysis between community parameters. To carry out this research, the macroinvertebrate community was studied in 10 sampling sites distributed along the main course of the river. The samples were taken in summer (1997 and 2000), when optimal hydrological conditions existed. Analysis of the samples showed that the benthic fauna was composed of 56 taxa, the dominant group being insects with 48 taxa. Three main sectors were recognised in the course of the Cautín River: high, middle and low. Each sector has restricted-distribution species, while other species are widely distributed along the river. These distribution patterns seem to be influenced by dissolved oxygen concentration, temperature, altitudinal distribution and anthropo-cultural activity, present at every sampling site. Finally, this research provides a first approach to the biology of the Cautín River. Further studies could be planned on the basis of this knowledge to investigate water quality indicators based on macroinvertebrate communities.

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Section: Discussionsupporting

confidence: 63%

Section: Sampling Proceduresmentioning

confidence: 99%

Macrozoobenthos in an altitudinal gradient in North Patagonian Cautín River (Araucanía Region, Chile)

Figueroa

Ríos-Escalante

2022

Braz. J. Biol.

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“…(2021), who found associations between groups reported and environmental parameters for Chilean North Patagonian rivers. In this scenario, the macroinvertebrate assemblage fauna in the studied river is similar to observations for central and southern Chilean rivers (35-40º S;Fierro et al, 2015;Figueroa et al, 2003Figueroa et al, , 2007Figueroa et al, , 2013Vega et al, 2020;Barile et al, 2021), where it was found marked differences in community structure in function to river zone, where it is possible found that in high zones there are shredders (Ephemeroptera, Plecoptera) that requires water quality with high oxygen content and low dissolved organic matter contents and nutrient concentration (Moya et al, 2009;Oyanedel et al, 2008;Miserendino et al, 2018;De los Ríos-Escalante et al, 2020;Solis-Lufi et al, 2021).…”

Section: Tablesupporting

confidence: 87%

Benthic community ecology for Algerian river Seybouse

2024

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The Seybouse is the second largest river basin in Algeria, hosting an important biodiversity and providing various ecosystem services. This watershed is highly influenced by agricultural and industrial activities, which threaten its biodiversity and ecosystem integrity. The use of benthic macroinvertebrates as biological indicators has a long tradition in developed countries and integrated into all assessments of the ecological quality of river systems. However, the macroinvertebrates of many North African regions are still not well studied, including those of the Seybouse river. The aim of this study is to assess the inventory and ecological role of benthic macroinvertebrates in inland waters of the Seybouse River and determine the impact of pollution on their spatial distributions. We sampled the benthic macrofauna of Wadi Seybouse and its affluents using regular surveys in three sites, of which one was in the upper Seybouse Bouhamdane in Medjez Amar and two in the middle Seybouse. Between December 2019 and May 2020, 10 physico-chemical parameters (pH, EC, OD, water speed, NO3, Salinity, NO2, MES, turbidity, depth) were measured in order to establish a health state diagnosis of these aquatic ecosystems. The complementary biological approach by the analysis of populations of macroinvertebrates identified 7482 individuals and 40 taxa divided into five classes: Crustaceans which were the most dominant, insects with the main orders (Ephemeroptera, Diptera, Trichoptera, Heteroptera and Odonata), Molluscs, Nematodes and Annelids. The physico-chemical analyzes and the application of the organic pollution indices indicated a strong to excessive pollution for all sites, especially in Seybouse upstream

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“…wastewater discharges from a range of industrial activities. In some sections of the river system present an interruption of the natural flow, with the presence of agricultural and forestry activities in the marginal strip of the river, in addition to human settlement during the fishing season (Barile et al, 2020). The loss of this natural physical barrier disrupts the dynamics between the river and riverine vegetation favoring the direct entry of an excesses of agrochemicals and fertilizers into the river system, which affects the chemical characteristics and composition of the river biota.…”

Section: Resultsmentioning

confidence: 99%

Community structure of benthic invertebrates in the Allipén River basin, North Patagonia, Araucania region (38º S, Chile)

et al. 2022

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One of the biological indicators most used to determine the health of a fluvial ecosystem are the benthic macroinvertebrates. The presence of recurrent species in a wide gradient of latitudes, dominates the biogeographic pattern of the benthic macroinvertebrates in Chilean fresh waters, nevertheless the knowledge on the communitarian ecology of these in the Chilean rivers continues to be scarce. Null models became a powerful statistical tool for describing the ecological mechanisms that drive the structure of an ecological community and the underlying patterns of diversity. The objective of this study was to determine the community structure of benthic invertebrates in the Allipén River by describing their composition, richness and abundance of species through richness models and null models based on presence/absence. The results reveal a high family richness and low diversity, three phyla, five classes, 11 orders and 28 families were identified in the study area during the four seasons of the year. The Arthropoda phylum was the most representative in abundance and richness. Regarding to richness, Trichoptera (7 families) and Diptera (6 families) followed by Ephemeroptera (3 families) were the orders that showed the greatest diversity of families, however, a low diversity with a H’≤ 1.5 nit was registered in the study area. We demonstrated through the null models, the randomization in the species associations corresponding to the three analyzed sites. The information provided here contributes to the understanding of the ecological patterns of the invertebrate communities in the Allipén River, establishing the basis for more complex ecological studies.

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First report the role of benthic macroinvertebrates as preys for native fish in Toltén river (38° S, Araucania region Chile)

Cited by 5 publications

References 54 publications

Macrozoobenthos in an altitudinal gradient in North Patagonian Cautín River (Araucanía Region, Chile)

Macrozoobenthos in an altitudinal gradient in North Patagonian Cautín River (Araucanía Region, Chile)

Benthic community ecology for Algerian river Seybouse

Community structure of benthic invertebrates in the Allipén River basin, North Patagonia, Araucania region (38º S, Chile)

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