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      First report the role of benthic macroinvertebrates as preys for native fish in Toltén river (38° S, Araucania region Chile) Translated title: Primeiro relate o papel dos macroinvertebrados como presas de peixes nativos no rio Toltén (38° S, região da Araucanía, Chile)

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          Abstract

          Abstract The Toltén river is located in the 137 years old Araucania region, Chile (38° S), and is characterized by low alterations through human interference due agriculture and towns in its surrounding basin, the presence of native fishes and salmonids, and by its lake effluent regime originated from Villarrica lake. The aim of the present study was to make a review of ecological role of the benthic inland water macroinvertebrates as preys for native fishes of the River Toltén, in order to understand their importance in the ecosystem of the river. The literature revealed that the main prey for native fishes are Chironomidae larvae, nevertheless there are not specific reports for Tolten river. The exposed results are similar with similar native species for Patagonia, and these native species would have prey for introduced salmonids, or these species would have prey competition with introduced salmonids in according to the literature descriptions for Argentinean and Chilean Patagonia.

          Translated abstract

          Resumo O rio Toltén está localizado na região da Araucanía, com 137 anos de idade, Chile (38° S), e é caracterizado por baixas alterações por interferência humana devido à agricultura e cidades da bacia circundante, pela presença de salmonídeos e pelo regime de efluentes dos lagos. do lago Villarrica. O objetivo do presente estudo foi fazer uma revisão do papel ecológico dos macroinvertebrados bentônicos de águas interiores do rio Toltén, a fim de entender sua importância no ecossistema do rio. A literatura revelou que as principais presas de peixes nativos são as larvas de Chironomidae, no entanto, não há relatos específicos para o rio Tolten. Os resultados expostos são semelhantes com espécies nativas semelhantes para a Patagônia, e essas espécies nativas teriam presa por salmonídeos introduzidos, ou essas espécies teriam competição de presas com salmonídeos introduzidos de acordo com as descrições da literatura para a Patagônia Argentina e Chilena.

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          Stomach contents analysis-a review of methods and their application

          E. Hyslop (1980)
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            Estado de conocimiento de los peces dulceacuícolas de Chile

            La ictiofauna nativa de los sistemas límnicos de Chile se compone de 11 familias, 17 géneros y alrededor de 44 especies, incluyendo dos lampreas. De éstas, 81% son endémicas de la provincia biogeográfica chilena y 40% se encuentran clasificadas en peligro de extinción. Los grupos más representados corresponden a los órdenes Siluriformes (11 especies), Osmeriformes (9 especies) y Atheriniformes (7 especies). También están representados en Chile los ciclóstomos Petromyzontiformes (2 especies), y los teleósteos Characiformes (4 especies), Cyprinodontiformes (6 especies), Perciformes (4 especies) y Mugilifromes (1). Latitudinalmente, la mayor riqueza de especies ocurre en la zona centro-sur de la provincia Chilena, en tanto que los extremos norte y sur son de baja riqueza específica. Dado su origen, porcentaje de endemismo y retención de caracteres primitivos, este conjunto ictiofaunístico es de alto valor biogeográfico y de conservación. Existen sin embargo importantes vacíos de conocimiento sobre su sistemática, distribución y biología.
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              Aquaculture, non-native salmonid invasions and associated declines of native fishes in Northern Patagonian lakes

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                Author and article information

                Journal
                bjb
                Brazilian Journal of Biology
                Braz. J. Biol.
                Instituto Internacional de Ecologia (São Carlos, SP, Brazil )
                1519-6984
                1678-4375
                September 2021
                : 81
                : 3
                : 845-853
                Affiliations
                [02] Temuco Araucanía orgnameUniversidad Católica de Temuco orgdiv2Núcleo de Producción Alimentaria Chile
                [03] Temuco Araucanía orgnameUniversidad Católica de Temuco orgdiv1Facultad de Recursos Naturales orgdiv2Departamento de Ciencias Biológicas y Químicas Chile
                [01] Temuco Araucanía orgnameUniversidad Católica de Temuco orgdiv1Facultad de Recursos Naturales orgdiv2Departamento de Ciencias Agropecuarias y Acuicolas Chile
                [04] Temuco Araucanía orgnameUniversidad Católica de Temuco orgdiv1Núcleo de Estudios Ambientales Chile
                Article
                S1519-69842021000300845 S1519-6984(21)08100300845
                10.1590/1519-6984.232661
                1f7deb53-a904-4fad-96ba-10c24be76d61

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 30 December 2019
                : 27 March 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 90, Pages: 9
                Product

                SciELO Brazil

                Categories
                Review Article

                Chironomidae,rio Toltén,Patagônia Norte,peixes nativos,presas,salmonídeos predadores,Toltén river,North Patagonia,native fishes,prey,predation salmonids

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