Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat
Salinity is one of the most important structuring factors in the distribution and bioenergetics of estuarine fishes. The aims of this work were to study the distribution of the sub-Antarctic, eurythermic, euryhaline and coastal notothenioid Eleginops maclovinus in Lapataia estuary (Tierra del Fuego...
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ftconicet:oai:ri.conicet.gov.ar:11336/94671 2023-10-09T21:45:38+02:00 Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat Vanella, Fabián Alberto Duarte, Claudia Alejandra Lattuca, María Eugenia Fernandez, Daniel Alfredo Boy, Claudia Clementina application/pdf http://hdl.handle.net/11336/94671 eng eng Springer info:eu-repo/semantics/altIdentifier/doi/10.1007%2Fs00300-016-1986-y info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-016-1986-y http://hdl.handle.net/11336/94671 Vanella, Fabián Alberto; Duarte, Claudia Alejandra; Lattuca, María Eugenia; Fernandez, Daniel Alfredo; Boy, Claudia Clementina; Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat; Springer; Polar Biology; 40; 3; 6-2016; 639-647 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ELEGINOPS MACLOVINUS METABOLISM RESPIROMETRY SALINITY ESTUARIAL ZONE LAPATAIA BAY https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet 2023-09-24T18:27:17Z Salinity is one of the most important structuring factors in the distribution and bioenergetics of estuarine fishes. The aims of this work were to study the distribution of the sub-Antarctic, eurythermic, euryhaline and coastal notothenioid Eleginops maclovinus in Lapataia estuary (Tierra del Fuego National Park), in relation to salinity conditions, and the effect of salinity on the oxygen con- sumption of this species. The spread of the mixing zone of Lapataia was studied and physicochemical properties (conductivity, pH, temperature and salinity) were mea- sured. Distribution of E. maclovinus juveniles was inves- tigated principally by electrofishing in the field. Oxygen consumption of absorptive and post-absorptive young-of- the-year individuals (8?10 cm total length) was analyzed by stop-flow respirometry measurements, performed at three salinities (1, 12 and 30 psu). The intermediate mixing zone is relatively small in this system, showing an exten- sion of *1.5 km upstream from Lapataia Bay. It was found that there was a strong relationship between the mixing zone and the distribution of juveniles of E. maclovinus. No differences were found in the metabolic baseline at different salinities. A punctual feeding provoked a typical SDA response, with a significant higher ingested food and metabolic scope at intermediate salinity (12 psu). An increased scope was reached by increasing the energy intake and not through a decrease in the standard metabolic rate. Under an available food condition, this capacity could result in an increased growth rate at inter- mediate salinity. Fil: Vanella, Fabián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Duarte, Claudia Alejandra. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lattuca, María Eugenia. Consejo Nacional de Investigaciones Científicas ... Article in Journal/Newspaper Antarc* Antarctic Polar Biology Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Austral Argentina Sion ENVELOPE(13.758,13.758,66.844,66.844) Duarte ENVELOPE(-60.950,-60.950,-64.200,-64.200) |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ELEGINOPS MACLOVINUS METABOLISM RESPIROMETRY SALINITY ESTUARIAL ZONE LAPATAIA BAY https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ELEGINOPS MACLOVINUS METABOLISM RESPIROMETRY SALINITY ESTUARIAL ZONE LAPATAIA BAY https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Vanella, Fabián Alberto Duarte, Claudia Alejandra Lattuca, María Eugenia Fernandez, Daniel Alfredo Boy, Claudia Clementina Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
topic_facet |
ELEGINOPS MACLOVINUS METABOLISM RESPIROMETRY SALINITY ESTUARIAL ZONE LAPATAIA BAY https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Salinity is one of the most important structuring factors in the distribution and bioenergetics of estuarine fishes. The aims of this work were to study the distribution of the sub-Antarctic, eurythermic, euryhaline and coastal notothenioid Eleginops maclovinus in Lapataia estuary (Tierra del Fuego National Park), in relation to salinity conditions, and the effect of salinity on the oxygen con- sumption of this species. The spread of the mixing zone of Lapataia was studied and physicochemical properties (conductivity, pH, temperature and salinity) were mea- sured. Distribution of E. maclovinus juveniles was inves- tigated principally by electrofishing in the field. Oxygen consumption of absorptive and post-absorptive young-of- the-year individuals (8?10 cm total length) was analyzed by stop-flow respirometry measurements, performed at three salinities (1, 12 and 30 psu). The intermediate mixing zone is relatively small in this system, showing an exten- sion of *1.5 km upstream from Lapataia Bay. It was found that there was a strong relationship between the mixing zone and the distribution of juveniles of E. maclovinus. No differences were found in the metabolic baseline at different salinities. A punctual feeding provoked a typical SDA response, with a significant higher ingested food and metabolic scope at intermediate salinity (12 psu). An increased scope was reached by increasing the energy intake and not through a decrease in the standard metabolic rate. Under an available food condition, this capacity could result in an increased growth rate at inter- mediate salinity. Fil: Vanella, Fabián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Duarte, Claudia Alejandra. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lattuca, María Eugenia. Consejo Nacional de Investigaciones Científicas ... |
format |
Article in Journal/Newspaper |
author |
Vanella, Fabián Alberto Duarte, Claudia Alejandra Lattuca, María Eugenia Fernandez, Daniel Alfredo Boy, Claudia Clementina |
author_facet |
Vanella, Fabián Alberto Duarte, Claudia Alejandra Lattuca, María Eugenia Fernandez, Daniel Alfredo Boy, Claudia Clementina |
author_sort |
Vanella, Fabián Alberto |
title |
Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
title_short |
Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
title_full |
Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
title_fullStr |
Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
title_full_unstemmed |
Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat |
title_sort |
effects of changes in salinity on oxygen and food consumption of the young sub-antarctic notothenioid eleginops maclovinus: possible implications of their use of an estuarine habitat |
publisher |
Springer |
url |
http://hdl.handle.net/11336/94671 |
long_lat |
ENVELOPE(13.758,13.758,66.844,66.844) ENVELOPE(-60.950,-60.950,-64.200,-64.200) |
geographic |
Antarctic Austral Argentina Sion Duarte |
geographic_facet |
Antarctic Austral Argentina Sion Duarte |
genre |
Antarc* Antarctic Polar Biology Tierra del Fuego |
genre_facet |
Antarc* Antarctic Polar Biology Tierra del Fuego |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007%2Fs00300-016-1986-y info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-016-1986-y http://hdl.handle.net/11336/94671 Vanella, Fabián Alberto; Duarte, Claudia Alejandra; Lattuca, María Eugenia; Fernandez, Daniel Alfredo; Boy, Claudia Clementina; Effects of changes in salinity on oxygen and food consumption of the young sub-Antarctic notothenioid Eleginops maclovinus: possible implications of their use of an estuarine habitat; Springer; Polar Biology; 40; 3; 6-2016; 639-647 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
_version_ |
1779320481560657920 |