Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/48226
Title: Distribution, Abundance and Molecular Analysis of Genus Barbadocladius Cranston & Krosch (Diptera, Chironomidae) in Tropical, High Altitude Andean Streams and Rivers
Author: Prat i Fornells, Narcís
Ribera Almerje, Carles
Rieradevall i Sant, Maria
Villamarín Flores, Christian Patricio
Acosta Rivas, Carlos Raúl
Keywords: Ecologia aquàtica
Invertebrats d'aigua dolça
Dípters
Insectes
Aquatic ecology
Freshwater invertebrates
Diptera
Insects
Issue Date: Sep-2013
Publisher: Sociedade Entomológica do Brasil
Abstract: The distribution of the genus Barbadocladius Cranston & Krosch (Diptera: Chironomidae), previously reported from Chile to Bolivia, has extended northwards. Larvae, pupae and pupal exuviae of this genus have been found in the high mountain tropical streams of Peru to 9°22′56″, but are restricted to very high altitude streams (altitudes over 3,278 m asl) compared to the lower altitude streams (below 1,100 m asl) in which the genus is reported in Chile and Argentina. Based on morphological studies, both described species in the genus, Barbadocladius andinus Cranston & Krosch and Barbadocladius limay Cranston & Krosch, have been found in Peru as pupae or pupal exuviae. Morphological analysis of the larvae and pupae revealed no differences between the two described species from Patagonia and Peru, which are of similar size and with a similar armament of hooklets and spines in pupal tergites and sternites. However, molecular analysis of larvae and pupae revealed that in Peru, there are at least two different evolutionary lines, one distributed widely and another restricted to one site. Phylogenetic analysis (using cox1 mitochondrial sequences) of all available sequences of Barbadocladius shows that the Chilean and Argentinean material differs from that of Peru. Therefore, a total of four molecular segregates are identified, although morphologically, neither larvae nor the pupae may be differentiated.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/s13744-013-0161-1
It is part of: Neotropical Entomology, 2013, vol. 42, num. 6, p. 607-617
Related resource: http://dx.doi.org/10.1007/s13744-013-0161-1
URI: http://hdl.handle.net/2445/48226
ISSN: 1519-566X
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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