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dc.contributor.author
Milano, Daniela
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dc.contributor.author
Aigo, Juana
dc.contributor.author
Macchi , Patricio J.
dc.date.available
2016-07-29T18:40:29Z
dc.date.issued
2013-05
dc.identifier.citation
Milano, Daniela; Aigo, Juana; Macchi , Patricio J.; Diel patterns in space use, food and metabolic activity of Galaxias maculatus (Pisces: Galaxiidae) in the littoral zone of a shallow Patagonian lake; Springer; Aquatic Ecology; 47; 3; 5-2013; 277-290
dc.identifier.issn
1386-2588
dc.identifier.uri
http://hdl.handle.net/11336/6816
dc.description.abstract
We detected that Galaxias maculatus exhibits a pattern where metabolic activity increases after sunrise and peaks between noon and sunset, but this species feeds in the afternoon, until several hours after sunset. Moreover, we showed that G. maculatus is observed in the littoral zone during the day, disappears completely from this zone after sunset and returns at sunrise. Littoral prey species are common in the diet of G. maculatus, but this study showed that pelagic prey are also present during twilight and night hours in smaller individuals (<50 mm), which is related to habitat use. These behavioural rhythms are especially important for G. maculatus, which runs a high predation risk when consuming prey that is widely available outside the littoral zone. This risk is ameliorated under the protection of low light intensity. Thus, G. maculatus is a key species linking lower trophic levels, such as the plankton community, to higher levels of native and exotic piscivores. These displacements of G. maculatus generate an active flow of energy and matter between habitats, with a potentially profound effect on the entire food network and energy dynamics of the lake.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Metabolic Rate
dc.subject
Feeding
dc.subject
Habitat Use
dc.subject
Galaxias Maculatus
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Diel patterns in space use, food and metabolic activity of Galaxias maculatus (Pisces: Galaxiidae) in the littoral zone of a shallow Patagonian lake
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-07-28T18:32:43Z
dc.journal.volume
47
dc.journal.number
3
dc.journal.pagination
277-290
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Milano, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
dc.description.fil
Fil: Aigo, Juana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
dc.description.fil
Fil: Macchi , Patricio J.. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Grupo de Evaluacion y Manejo de Recursos Icticos; Argentina
dc.journal.title
Aquatic Ecology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10452-013-9443-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10452-013-9443-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10452-013-9443-2
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