Review: Knowledge status of predators of the freshwater prawn Cryphiops caementarius (Decapoda: Palaemonidae) in river systems along the North Western Andean region from Perú and Chile
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| Format: | Artículo científico |
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Universidad de Costa Rica
2020
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| _version_ | 1876441794322890752 |
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| author | Carlos Velásquez |
| author_facet | Carlos Velásquez |
| contents | Review: Knowledge status of predators of the freshwater prawn Cryphiops caementarius (Decapoda: Palaemonidae) in river systems along the North Western Andean region from Perú and Chile Carlos Velásquez Luis Henríquez-Antipa Denisse Torres-Avilés Álvaro-E. Wilson Yeriko Alanís Francisco Cárcamo Biología exotic species Native predators freshwater crustaceans Introduction: Cryphiops caementarius, is an endemic prawn from river ecosystems in Southern Perú and Northern Chile. In these watersheds, natural populations are threatened by multiple anthropic interventions such as mining activities and fishing pressure, but also, by increasing impacts of invasive exotic predators. Information related with predation on C. caementarius is scarce representing a major knowledge gap to ensure suitable management and conservation practices. Accordingly, the further deepening in relevant aspects such as the estimation of populations losses due to predators has been indicated as critical by relevant agencies as FAO. Objective: To conduct a complete registry and classification of C. caementarius predators, updating the knowledge for the Andean region. Methods: A thorough bibliographic review on existing information on C. caementarius’ predators from Perú and Chile was carried out calculating percentage of occurrence, relative frequency of species, zoogeographic origin, trophic structure, phenotypic attributes, river zone that inhabits and life stage of incidence. The registry was complemented using semi-structured interviews from prawn´s fishers in central-Northern Chile. Results: C. caementarius is predated along the entire fluvial network (estuary, potamon and rhithron) by 21 species of opportunists, carnivores, omnivores and herbivores, mostly aquatic vertebrates. In turn, these belong to 15 families and six guilds of native, exotic and cosmopolitan species. Approximately 86 % predate on adult prawns, whilst, 71 % on juveniles and 24 % on larvae. More than 40 % of the predation pressure seems to be exerted by native waterfowls and 24 % by exotic fish. Conclusions: The results emphasize the relevance for conservation of native species of predators in the Andean region and the need of control measures on exotic species in a latitudinal basis. Accordingly, this review may serve as an initial decision-making tool for future conservation efforts both on prawns and native biota, but also supporting restocking actions, fisheries management plans and risk assessment for C. caementarius populations across the Andean region. 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44966323004 https://www.redalyc.org/journal/449/44966323004/ https://www.redalyc.org/journal/449/44966323004/html/ https://www.redalyc.org/journal/449/44966323004/44966323004.epub https://www.redalyc.org/journal/449/44966323004/movil DOI10.15517/RBT.V68I4.41213 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.4 Vol.68 |
| format | Artículo científico |
| id | redalyc_44966323004 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Review: Knowledge status of predators of the freshwater prawn Cryphiops caementarius (Decapoda: Palaemonidae) in river systems along the North Western Andean region from Perú and Chile Carlos Velásquez Biología exotic species Native predators freshwater crustaceans Review: Knowledge status of predators of the freshwater prawn Cryphiops caementarius (Decapoda: Palaemonidae) in river systems along the North Western Andean region from Perú and Chile Carlos Velásquez Luis Henríquez-Antipa Denisse Torres-Avilés Álvaro-E. Wilson Yeriko Alanís Francisco Cárcamo Biología exotic species Native predators freshwater crustaceans Introduction: Cryphiops caementarius, is an endemic prawn from river ecosystems in Southern Perú and Northern Chile. In these watersheds, natural populations are threatened by multiple anthropic interventions such as mining activities and fishing pressure, but also, by increasing impacts of invasive exotic predators. Information related with predation on C. caementarius is scarce representing a major knowledge gap to ensure suitable management and conservation practices. Accordingly, the further deepening in relevant aspects such as the estimation of populations losses due to predators has been indicated as critical by relevant agencies as FAO. Objective: To conduct a complete registry and classification of C. caementarius predators, updating the knowledge for the Andean region. Methods: A thorough bibliographic review on existing information on C. caementarius’ predators from Perú and Chile was carried out calculating percentage of occurrence, relative frequency of species, zoogeographic origin, trophic structure, phenotypic attributes, river zone that inhabits and life stage of incidence. The registry was complemented using semi-structured interviews from prawn´s fishers in central-Northern Chile. Results: C. caementarius is predated along the entire fluvial network (estuary, potamon and rhithron) by 21 species of opportunists, carnivores, omnivores and herbivores, mostly aquatic vertebrates. In turn, these belong to 15 families and six guilds of native, exotic and cosmopolitan species. Approximately 86 % predate on adult prawns, whilst, 71 % on juveniles and 24 % on larvae. More than 40 % of the predation pressure seems to be exerted by native waterfowls and 24 % by exotic fish. Conclusions: The results emphasize the relevance for conservation of native species of predators in the Andean region and the need of control measures on exotic species in a latitudinal basis. Accordingly, this review may serve as an initial decision-making tool for future conservation efforts both on prawns and native biota, but also supporting restocking actions, fisheries management plans and risk assessment for C. caementarius populations across the Andean region. 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44966323004 https://www.redalyc.org/journal/449/44966323004/ https://www.redalyc.org/journal/449/44966323004/html/ https://www.redalyc.org/journal/449/44966323004/44966323004.epub https://www.redalyc.org/journal/449/44966323004/movil DOI10.15517/RBT.V68I4.41213 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.4 Vol.68 |
| title | Review: Knowledge status of predators of the freshwater prawn Cryphiops caementarius (Decapoda: Palaemonidae) in river systems along the North Western Andean region from Perú and Chile |
| topic | Biología exotic species Native predators freshwater crustaceans |
| url | https://www.redalyc.org/articulo.oa?id=44966323004 https://www.redalyc.org/journal/449/44966323004/ https://www.redalyc.org/journal/449/44966323004/html/ https://www.redalyc.org/journal/449/44966323004/44966323004.epub https://www.redalyc.org/journal/449/44966323004/movil |