Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile
The robalo Eleginops maclovinus (Valenciennes 1830) is a common fsh in the littoral, estuaries and rivers (under tidal effects zone) of southern South América, including the Falkland islands. The feeding habits of this species is known mainly in the two frst mentioned habitats, where it consumes m...
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Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
2010
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oai:scielo:S0717-653820100001000082010-08-09Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, ChilePequeño,GermánPavés,HéctorBertrán,CarlosVargas-Chacoff,Luis Feeding seasonality Eleginopsidae physiological versatility Chile Alimentación estacionalidad Eleginopsidae versatilidad fisiológica Chile The robalo Eleginops maclovinus (Valenciennes 1830) is a common fsh in the littoral, estuaries and rivers (under tidal effects zone) of southern South América, including the Falkland islands. The feeding habits of this species is known mainly in the two frst mentioned habitats, where it consumes mostly animals from marine and estuarine origin. However, little is known about its seasonal feeding habits in limnetic environments. It is only assumed that it has to eat preys from freshwater origin. In the present study, 127 specimens of E. maclovinus were analysed, 119 of which had stomach contents. The zoophagic tendency of the species is corroborated, but also animáis from low salinities and limnetic salinities were found to be consumed inthe freshwater environment. Consequently, E. maclovinus appears as an extraordinarily versatile species, in relation to its feeding capacities, with physiologic characteristics allowing a wide osmoregulatory spectrum at the digestive level, probably one of the most variable within the suborder Notothenioidei, which has strong Antarctic links.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.74 n.1 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000100008en10.4067/S0717-65382010000100008 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Feeding seasonality Eleginopsidae physiological versatility Chile Alimentación estacionalidad Eleginopsidae versatilidad fisiológica Chile |
| spellingShingle |
Feeding seasonality Eleginopsidae physiological versatility Chile Alimentación estacionalidad Eleginopsidae versatilidad fisiológica Chile Pequeño,Germán Pavés,Héctor Bertrán,Carlos Vargas-Chacoff,Luis Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| description |
The robalo Eleginops maclovinus (Valenciennes 1830) is a common fsh in the littoral, estuaries and rivers (under tidal effects zone) of southern South América, including the Falkland islands. The feeding habits of this species is known mainly in the two frst mentioned habitats, where it consumes mostly animals from marine and estuarine origin. However, little is known about its seasonal feeding habits in limnetic environments. It is only assumed that it has to eat preys from freshwater origin. In the present study, 127 specimens of E. maclovinus were analysed, 119 of which had stomach contents. The zoophagic tendency of the species is corroborated, but also animáis from low salinities and limnetic salinities were found to be consumed inthe freshwater environment. Consequently, E. maclovinus appears as an extraordinarily versatile species, in relation to its feeding capacities, with physiologic characteristics allowing a wide osmoregulatory spectrum at the digestive level, probably one of the most variable within the suborder Notothenioidei, which has strong Antarctic links. |
| author |
Pequeño,Germán Pavés,Héctor Bertrán,Carlos Vargas-Chacoff,Luis |
| author_facet |
Pequeño,Germán Pavés,Héctor Bertrán,Carlos Vargas-Chacoff,Luis |
| author_sort |
Pequeño,Germán |
| title |
Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| title_short |
Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| title_full |
Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| title_fullStr |
Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| title_full_unstemmed |
Seasonal limnetic feeding regime of the robalo Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile |
| title_sort |
seasonal limnetic feeding regime of the robalo eleginops maclovinus (valenciennes 1830), in the valdivia river, chile |
| publisher |
Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción |
| publishDate |
2010 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000100008 |
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| _version_ |
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