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http://hdl.handle.net/2445/165713
Title: | Trophic ecology of Hyalella sp. (Crustacea: Amphipoda) in a High Andes headwater river with travertine deposits |
Author: | Acosta Rivas, Carlos Raúl Prat i Fornells, Narcís |
Keywords: | Amfípodes Ecologia aquàtica Amphipoda Aquatic ecology |
Issue Date: | 2011 |
Publisher: | Wiley |
Abstract: | We studied the diet of 50 individuals of Hyalella sp. collected in the karstic headwaters of a highaltitude Andean river (3817 m a.s.l. Peru) in four different habitats: macrophytes, bryophytes, leaf litter, and layers of travertine. The gut content analysis showed a dominance of fine particulate organic matter (FPOM) in most habitats - layers of travertine (69.5%), Myriophylum (58.5%) and bryophytes (56.8%) - except for individuals collected in leaf litter where coarse particulate organic matter (CPOM) represented 68% of gut content, which indicates a high trophic flexibility of Hyalella sp. Likewise, in an experiment with feeding chambers in situ during three days, twenty individuals of Hyalella sp. presented a higher consumption of leaf litter of native species (Polylepis sp.) (0.025 mg/day) than those of an introduced species (Eucalyptus globulus) (0.008 mg/day). |
Note: | Versió postprint del document publicat a: https://doi.org/10.1002/iroh.201111247 |
It is part of: | International Review of Hydrobiology, 2011, vol. 96, num. 3, p. 274-285 |
URI: | http://hdl.handle.net/2445/165713 |
Related resource: | https://doi.org/10.1002/iroh.201111247 |
ISSN: | 1434-2944 |
Appears in Collections: | Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) Publicacions de projectes de recerca finançats per la UE |
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