OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES
The energy budget of Antarctic stenothermic and/or stenohaline ectotherms is modulated by variations of temperature and salinity. The joint effects of these latter on polar organisms have been but little studied. Data on this subject are of great importance for an understanding of the energy demand...
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Universidade de São Paulo, Instituto Oceanográfico
2014
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ftjscielo:oai:scielo:S1679-87592014000400315 2023-05-15T13:59:03+02:00 OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES Gomes,Vicente Passos,Maria José de Arruda Campos Rocha Rocha,Arthur José da Silva Santos,Thais da Cruz Alves dos Hasue,Fabio Matsu Ngan,Phan Van 2014-12-01 text/html http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592014000400315 en eng Universidade de São Paulo, Instituto Oceanográfico Brazilian Journal of Oceanography v.62 n.4 2014 Antarctica Amphipods Metabolic adaptations Temperature Salinity Bovallia gigantea journal article 2014 ftjscielo 2017-01-29T09:52:25Z The energy budget of Antarctic stenothermic and/or stenohaline ectotherms is modulated by variations of temperature and salinity. The joint effects of these latter on polar organisms have been but little studied. Data on this subject are of great importance for an understanding of the energy demand of Antarctic animals such as amphipods, especially when considering their ecological importance and the possible impacts of global changes. Experiments were carried out at the Brazilian Antarctic Station "Comandante Ferraz" under controlled conditions. Specimens of Bovallia gigantea were collected in Admiralty Bay and acclimated to temperatures of 0ºC; 2.5ºC and 5ºC and to salinities of 35, 30 and 25. Thirty measurements were taken for each of the nine possible combinations of the three temperatures and the three salinities. Metabolic rates were assessed based on oxygen consumption and total ammonia nitrogenous excretion in sealed respirometers. At 0ºC and 2.5ºC, the metabolic rates of the animals that were acclimated to salinities of 30 or 35 were similar, indicating a possible mechanism of metabolic independence of temperature. However, the metabolic rates were always higher at 5.0ºC. The effects of temperature on oxygen consumption and on ammonia excretion rates were intensified by lower salinities. Individuals of B gigantea have a temperature-independent metabolic rate within a narrow temperature window that can be modified in accordance with salinity. Article in Journal/Newspaper Antarc* Antarctic Antarctica SciELO Brazil (Scientific Electronic Library Online) Antarctic The Antarctic Admiralty Bay Ferraz ENVELOPE(-64.117,-64.117,-65.117,-65.117) |
institution |
Open Polar |
collection |
SciELO Brazil (Scientific Electronic Library Online) |
op_collection_id |
ftjscielo |
language |
English |
topic |
Antarctica Amphipods Metabolic adaptations Temperature Salinity Bovallia gigantea |
spellingShingle |
Antarctica Amphipods Metabolic adaptations Temperature Salinity Bovallia gigantea Gomes,Vicente Passos,Maria José de Arruda Campos Rocha Rocha,Arthur José da Silva Santos,Thais da Cruz Alves dos Hasue,Fabio Matsu Ngan,Phan Van OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
topic_facet |
Antarctica Amphipods Metabolic adaptations Temperature Salinity Bovallia gigantea |
description |
The energy budget of Antarctic stenothermic and/or stenohaline ectotherms is modulated by variations of temperature and salinity. The joint effects of these latter on polar organisms have been but little studied. Data on this subject are of great importance for an understanding of the energy demand of Antarctic animals such as amphipods, especially when considering their ecological importance and the possible impacts of global changes. Experiments were carried out at the Brazilian Antarctic Station "Comandante Ferraz" under controlled conditions. Specimens of Bovallia gigantea were collected in Admiralty Bay and acclimated to temperatures of 0ºC; 2.5ºC and 5ºC and to salinities of 35, 30 and 25. Thirty measurements were taken for each of the nine possible combinations of the three temperatures and the three salinities. Metabolic rates were assessed based on oxygen consumption and total ammonia nitrogenous excretion in sealed respirometers. At 0ºC and 2.5ºC, the metabolic rates of the animals that were acclimated to salinities of 30 or 35 were similar, indicating a possible mechanism of metabolic independence of temperature. However, the metabolic rates were always higher at 5.0ºC. The effects of temperature on oxygen consumption and on ammonia excretion rates were intensified by lower salinities. Individuals of B gigantea have a temperature-independent metabolic rate within a narrow temperature window that can be modified in accordance with salinity. |
format |
Article in Journal/Newspaper |
author |
Gomes,Vicente Passos,Maria José de Arruda Campos Rocha Rocha,Arthur José da Silva Santos,Thais da Cruz Alves dos Hasue,Fabio Matsu Ngan,Phan Van |
author_facet |
Gomes,Vicente Passos,Maria José de Arruda Campos Rocha Rocha,Arthur José da Silva Santos,Thais da Cruz Alves dos Hasue,Fabio Matsu Ngan,Phan Van |
author_sort |
Gomes,Vicente |
title |
OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
title_short |
OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
title_full |
OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
title_fullStr |
OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
title_full_unstemmed |
OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES |
title_sort |
oxygen consumption and ammonia excretion of the antarctic amphipod bovallia gigantea pfeffer, 1888, at different temperatures and salinities |
publisher |
Universidade de São Paulo, Instituto Oceanográfico |
publishDate |
2014 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592014000400315 |
long_lat |
ENVELOPE(-64.117,-64.117,-65.117,-65.117) |
geographic |
Antarctic The Antarctic Admiralty Bay Ferraz |
geographic_facet |
Antarctic The Antarctic Admiralty Bay Ferraz |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Brazilian Journal of Oceanography v.62 n.4 2014 |
_version_ |
1766267415040098304 |