Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex
Temperature tolerance, salinity tolerance, osmoregulation, and integumental water permeability have been studied in three arctic marine isopods of the Mesidotea complex, as well as in a freshwater variant of Mesidotea entomon. Temperature has little influence on their distribution in the southern Be...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1985
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Online Access: | http://dx.doi.org/10.1139/z85-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-006 |
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crcansciencepubl:10.1139/z85-006 2023-12-17T10:25:26+01:00 Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex Percy, J. A. 1985 http://dx.doi.org/10.1139/z85-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-006 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 63, issue 1, page 28-36 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1985 crcansciencepubl https://doi.org/10.1139/z85-006 2023-11-19T13:39:10Z Temperature tolerance, salinity tolerance, osmoregulation, and integumental water permeability have been studied in three arctic marine isopods of the Mesidotea complex, as well as in a freshwater variant of Mesidotea entomon. Temperature has little influence on their distribution in the southern Beaufort Sea. Habitat temperatures are far below the 96 h tolerance limits of the species which range from 21.5 to 26.3 °C. Salinity is an important factor in their distribution. The relative salinity tolerances and osmoregulatory capabilities of the isopods correlate well with their distribution in coastal waters. The marine M. entomon could not be adapted to fresh water even by a 7-week, stepwise transfer. The freshwater form, however, survives indefinitely in undiluted seawater. In all three species, the haemolymph is hyperosmotic in dilute seawater and isosmotic at higher salinities. Mesidotea entomon is the most effective osmoregulator and Mesidotea sabini is the least effective. All three species reduce their integumental permeability as the salinity falls. The capacity to alter the permeability to water increases in proportion to the euryhalinity of the species. The permeability varies directly with temperature, with Q 10 coefficients ranging from 1.75 to 2.68. Article in Journal/Newspaper Arctic Beaufort Sea Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Zoology 63 1 28 36 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Percy, J. A. Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Temperature tolerance, salinity tolerance, osmoregulation, and integumental water permeability have been studied in three arctic marine isopods of the Mesidotea complex, as well as in a freshwater variant of Mesidotea entomon. Temperature has little influence on their distribution in the southern Beaufort Sea. Habitat temperatures are far below the 96 h tolerance limits of the species which range from 21.5 to 26.3 °C. Salinity is an important factor in their distribution. The relative salinity tolerances and osmoregulatory capabilities of the isopods correlate well with their distribution in coastal waters. The marine M. entomon could not be adapted to fresh water even by a 7-week, stepwise transfer. The freshwater form, however, survives indefinitely in undiluted seawater. In all three species, the haemolymph is hyperosmotic in dilute seawater and isosmotic at higher salinities. Mesidotea entomon is the most effective osmoregulator and Mesidotea sabini is the least effective. All three species reduce their integumental permeability as the salinity falls. The capacity to alter the permeability to water increases in proportion to the euryhalinity of the species. The permeability varies directly with temperature, with Q 10 coefficients ranging from 1.75 to 2.68. |
format |
Article in Journal/Newspaper |
author |
Percy, J. A. |
author_facet |
Percy, J. A. |
author_sort |
Percy, J. A. |
title |
Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
title_short |
Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
title_full |
Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
title_fullStr |
Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
title_full_unstemmed |
Temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the Mesidotea (= Saduria ) complex |
title_sort |
temperature tolerance, salinity tolerance, osmoregulation, and water permeability of arctic marine isopods of the mesidotea (= saduria ) complex |
publisher |
Canadian Science Publishing |
publishDate |
1985 |
url |
http://dx.doi.org/10.1139/z85-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-006 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea |
genre_facet |
Arctic Beaufort Sea |
op_source |
Canadian Journal of Zoology volume 63, issue 1, page 28-36 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z85-006 |
container_title |
Canadian Journal of Zoology |
container_volume |
63 |
container_issue |
1 |
container_start_page |
28 |
op_container_end_page |
36 |
_version_ |
1785576683742429184 |