The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.

The Podonominae is a subfamily of Chironomidae which immature stages inhabit cold streams and brooks. In South America, most of the species have been reported only from the Andean/Patagonian subregion. However, the knowledge of its diversity from high tropical areas is still scarce. We studied the r...

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Detalles Bibliográficos
Autores: Acosta Rivas, Carlos Raúl, Prat i Fornells, Narcís
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/119880
Acceso en línea:https://hdl.handle.net/2445/119880
Access Level:acceso abierto
Palabra clave:Insectes aquàtics
Andes (Regió)
Dípters
Aquatic insects
Andes Region
Diptera
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spelling The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.Acosta Rivas, Carlos RaúlPrat i Fornells, NarcísInsectes aquàticsAndes (Regió)DíptersAquatic insectsAndes RegionDipteraThe Podonominae is a subfamily of Chironomidae which immature stages inhabit cold streams and brooks. In South America, most of the species have been reported only from the Andean/Patagonian subregion. However, the knowledge of its diversity from high tropical areas is still scarce. We studied the richness of genera and morphotypes of pupae and pupal exuviae of the subfamiliy Podonominae (Diptera: Chironomidae) in the high Andean rivers from Colombia, Ecuador and Peru, and discussed its geographical distribution in the studied area. The specimens were collected between 2004 and 2011 in 197 sampling points, from 17 basins over 2 000 m a.s.l. During the dry season, benthic and drift samples were taken in different substrates. We recognized three genera: Podonomopsis, Parochlus and Podonomus, with one, nine and 14 morphotypes, respectively. Only six of them were clearly determined as species previously described. Podonomopsis was represented only by one species, P. illiesi, only found in high altitude rivers in Perú (above 3 500 m a.s.l.). Morphotypes richness and abundance of Parochlus were higher in rivers from Ecuador and Colombia (P. incaicus, Parochlus sp. 1 and Parochlus sp. 2 were the most common species). Conversely, Podonomus was more diverse and abundant in rivers from Perú (P. caranqui, P. fittkaui and P. fastigians were the most common species). We found a clear pattern of distribution of morphotypes in the latitudinal gradient. First, we confirmed an evident decrease in the morphotypes richness in relation to the South Andes. Second, we found species such as Podomopsis illiesi, Podonomus fittkaui and Podomus fastigians that only were present in Perú, but not in Ecuador and Colombia. For these species, the Huancabamba Depression (6°S Latitude, North of Perú), a major structural and physiographic break in the Andes, could represent an important barrier in their dispersion toward lower latitudes. A taxonomic key to genera and morphotypes determination was also provided.Universidad de Costa Rica2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/119880Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaEspañolReproducció del document publicat a: https://doi.org/10.15517/rbt.v66i1.28459Revista de Biologia Tropical, 2018, vol. 66, num. 1, p. 6-27https://doi.org/10.15517/rbt.v66i1.28459cc-by-nc-nd (c) Acosta Rivas, Carlos Raúl et al., 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1198802026-05-27T06:46:51Z
dc.title.none.fl_str_mv The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
title The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
spellingShingle The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
Acosta Rivas, Carlos Raúl
Insectes aquàtics
Andes (Regió)
Dípters
Aquatic insects
Andes Region
Diptera
title_short The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
title_full The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
title_fullStr The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
title_full_unstemmed The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
title_sort The Podonominae pupae (Diptera: Chironomidae) of the tropical high Andean rivers.
dc.creator.none.fl_str_mv Acosta Rivas, Carlos Raúl
Prat i Fornells, Narcís
author Acosta Rivas, Carlos Raúl
author_facet Acosta Rivas, Carlos Raúl
Prat i Fornells, Narcís
author_role author
author2 Prat i Fornells, Narcís
author2_role author
dc.subject.none.fl_str_mv Insectes aquàtics
Andes (Regió)
Dípters
Aquatic insects
Andes Region
Diptera
topic Insectes aquàtics
Andes (Regió)
Dípters
Aquatic insects
Andes Region
Diptera
description The Podonominae is a subfamily of Chironomidae which immature stages inhabit cold streams and brooks. In South America, most of the species have been reported only from the Andean/Patagonian subregion. However, the knowledge of its diversity from high tropical areas is still scarce. We studied the richness of genera and morphotypes of pupae and pupal exuviae of the subfamiliy Podonominae (Diptera: Chironomidae) in the high Andean rivers from Colombia, Ecuador and Peru, and discussed its geographical distribution in the studied area. The specimens were collected between 2004 and 2011 in 197 sampling points, from 17 basins over 2 000 m a.s.l. During the dry season, benthic and drift samples were taken in different substrates. We recognized three genera: Podonomopsis, Parochlus and Podonomus, with one, nine and 14 morphotypes, respectively. Only six of them were clearly determined as species previously described. Podonomopsis was represented only by one species, P. illiesi, only found in high altitude rivers in Perú (above 3 500 m a.s.l.). Morphotypes richness and abundance of Parochlus were higher in rivers from Ecuador and Colombia (P. incaicus, Parochlus sp. 1 and Parochlus sp. 2 were the most common species). Conversely, Podonomus was more diverse and abundant in rivers from Perú (P. caranqui, P. fittkaui and P. fastigians were the most common species). We found a clear pattern of distribution of morphotypes in the latitudinal gradient. First, we confirmed an evident decrease in the morphotypes richness in relation to the South Andes. Second, we found species such as Podomopsis illiesi, Podonomus fittkaui and Podomus fastigians that only were present in Perú, but not in Ecuador and Colombia. For these species, the Huancabamba Depression (6°S Latitude, North of Perú), a major structural and physiographic break in the Andes, could represent an important barrier in their dispersion toward lower latitudes. A taxonomic key to genera and morphotypes determination was also provided.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/119880
url https://hdl.handle.net/2445/119880
dc.language.none.fl_str_mv Español
language_invalid_str_mv Español
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.15517/rbt.v66i1.28459
Revista de Biologia Tropical, 2018, vol. 66, num. 1, p. 6-27
https://doi.org/10.15517/rbt.v66i1.28459
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Acosta Rivas, Carlos Raúl et al., 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Acosta Rivas, Carlos Raúl et al., 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de Costa Rica
publisher.none.fl_str_mv Universidad de Costa Rica
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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