Osmoregulation in the Antarctic nematode Panagrolaimus davidi
A technique for determining the internal osmotic concentration of a small nematode using a modified nanolitre osmometer is described and used to investigate osmoregulation in the Antarctic nematode Panagrolaimus davidi . This technique enables the osmotic concentration to the measured with an accura...
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Company of Biologists
2010
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Online Access: | http://jeb.biologists.org/cgi/content/short/213/12/2025 https://doi.org/10.1242/jeb.041202 |
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fthighwire:oai:open-archive.highwire.org:jexbio:213/12/2025 2023-05-15T13:55:22+02:00 Osmoregulation in the Antarctic nematode Panagrolaimus davidi Wharton, David A. 2010-06-15 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/213/12/2025 https://doi.org/10.1242/jeb.041202 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/213/12/2025 http://dx.doi.org/10.1242/jeb.041202 Copyright (C) 2010, Company of Biologists Research Articles TEXT 2010 fthighwire https://doi.org/10.1242/jeb.041202 2015-02-28T21:02:12Z A technique for determining the internal osmotic concentration of a small nematode using a modified nanolitre osmometer is described and used to investigate osmoregulation in the Antarctic nematode Panagrolaimus davidi . This technique enables the osmotic concentration to the measured with an accuracy of ±12 mmol kg−1. The pattern of melting in the nematode's different body compartments suggests that it is the osmolality of its pseudocoelomic fluid that is being measured. Panagrolaimus davidi maintains its internal osmotic concentration above that of the external medium and is thus an hyperosmotic regulator. The nematode achieves regulation under hyposmotic stress more rapidly than under hyperosmotic stress. Text Antarc* Antarctic HighWire Press (Stanford University) Antarctic The Antarctic Journal of Experimental Biology 213 12 2025 2030 |
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Open Polar |
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HighWire Press (Stanford University) |
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fthighwire |
language |
English |
topic |
Research Articles |
spellingShingle |
Research Articles Wharton, David A. Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
topic_facet |
Research Articles |
description |
A technique for determining the internal osmotic concentration of a small nematode using a modified nanolitre osmometer is described and used to investigate osmoregulation in the Antarctic nematode Panagrolaimus davidi . This technique enables the osmotic concentration to the measured with an accuracy of ±12 mmol kg−1. The pattern of melting in the nematode's different body compartments suggests that it is the osmolality of its pseudocoelomic fluid that is being measured. Panagrolaimus davidi maintains its internal osmotic concentration above that of the external medium and is thus an hyperosmotic regulator. The nematode achieves regulation under hyposmotic stress more rapidly than under hyperosmotic stress. |
format |
Text |
author |
Wharton, David A. |
author_facet |
Wharton, David A. |
author_sort |
Wharton, David A. |
title |
Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
title_short |
Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
title_full |
Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
title_fullStr |
Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
title_full_unstemmed |
Osmoregulation in the Antarctic nematode Panagrolaimus davidi |
title_sort |
osmoregulation in the antarctic nematode panagrolaimus davidi |
publisher |
Company of Biologists |
publishDate |
2010 |
url |
http://jeb.biologists.org/cgi/content/short/213/12/2025 https://doi.org/10.1242/jeb.041202 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://jeb.biologists.org/cgi/content/short/213/12/2025 http://dx.doi.org/10.1242/jeb.041202 |
op_rights |
Copyright (C) 2010, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.041202 |
container_title |
Journal of Experimental Biology |
container_volume |
213 |
container_issue |
12 |
container_start_page |
2025 |
op_container_end_page |
2030 |
_version_ |
1766261969550049280 |