Evidence of microhabitat overlap between juvenile of introduced salmon Oncorhynchus tshawytscha and the native fish Trichomycterus areolatus in the Allipen River, Chile

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dc.contributor.authorVargas, Pamela V.
dc.contributor.authorArismendi, Ivan
dc.contributor.authorLara, Gladys
dc.contributor.authorMillar, Javier
dc.contributor.authorPeredo, Santiago
dc.date2010
dc.date.accessioned2021-04-30T16:58:23Z
dc.date.available2021-04-30T16:58:23Z
dc.description.abstractIntroduced juvenile Chinook salmon (Oncorhynchus tshawytscha) have been found co-occurring with native fishes in the Allipen River, Chile. Due to this co-occurence, the microhabitat use, microhabitat preferences, and overlap between juvenile Chinook salmon and the native catfish, Trichomycterus areolatus, were examined during the summer and fall of 2007-2008. Microhabitat preferences and overlap between juvenile Chinook salmon and the native catfish were determined using the Instream Flow Incremental Methodology and the Pianka's index. Juvenile Chinook salmon and the native catfish microhabitat preferences varied seasonally showing a high degree of similarity and overlap between the species (higher than 80%). The results suggest the risk of negative interactions and interactive segregation over habitat processes between juvenile Chinook salmon and native catfish. As a consequence, the Chinook salmon invasion may threaten the stability of native catfish populations at Allipen River.
dc.identifier.citationREVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA,Vol.45,285-292,2010
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3640
dc.language.isoes
dc.publisherUNIV VALPARAISO
dc.sourceREVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
dc.subject.englishBiological invasions
dc.subject.englishco-occurrence
dc.subject.englishnegative interactions
dc.subject.englishinteractive segregation
dc.subject.englishtemperate ecosystems
dc.titleEvidence of microhabitat overlap between juvenile of introduced salmon Oncorhynchus tshawytscha and the native fish Trichomycterus areolatus in the Allipen River, Chile
dc.typeArticle
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uct.indizacionSCI
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