Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908)
Excretion of ammonia, urea and primary amines (assayed as fluorescamine-positive substances, FPS) was measured in the Antarctic limpet Nacella concinna. The mean contributions to overall excretion rate were 89% ammonia, 8% urea and 3% FPS, although in some individuals urea formed almost 40% total ex...
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Oxford University Press
1994
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515942/ https://doi.org/10.1093/mollus/60.2.141 |
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ftnerc:oai:nora.nerc.ac.uk:515942 2023-05-15T13:49:33+02:00 Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) Clarke, Andrew Prothero-Thomas, Elizabeth Whitehouse, Michael J. 1994 http://nora.nerc.ac.uk/id/eprint/515942/ https://doi.org/10.1093/mollus/60.2.141 unknown Oxford University Press Clarke, Andrew orcid:0000-0002-7582-3074 Prothero-Thomas, Elizabeth; Whitehouse, Michael J. 1994 Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908). Journal of Molluscan Studies, 60 (2). 141-147. https://doi.org/10.1093/mollus/60.2.141 <https://doi.org/10.1093/mollus/60.2.141> Publication - Article PeerReviewed 1994 ftnerc https://doi.org/10.1093/mollus/60.2.141 2023-02-04T19:44:20Z Excretion of ammonia, urea and primary amines (assayed as fluorescamine-positive substances, FPS) was measured in the Antarctic limpet Nacella concinna. The mean contributions to overall excretion rate were 89% ammonia, 8% urea and 3% FPS, although in some individuals urea formed almost 40% total excreted nitrogen and in others primary amines formed over 30%. Ammonia and urea excretion rates were not correlated, suggesting the ureagenesis has a specific physiological role and is not simply an alternative end-point to ammonia. In starved limpets urea excretion at first increased by at least ×2, and then declined to low levels after 44 days. Ammonia excretion also increased, but only after 20 days, and then stayed high until at least day 44. These different patterns confirm the independent roles of ammonia and urea production in Nacella. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Journal of Molluscan Studies 60 2 141 147 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Excretion of ammonia, urea and primary amines (assayed as fluorescamine-positive substances, FPS) was measured in the Antarctic limpet Nacella concinna. The mean contributions to overall excretion rate were 89% ammonia, 8% urea and 3% FPS, although in some individuals urea formed almost 40% total excreted nitrogen and in others primary amines formed over 30%. Ammonia and urea excretion rates were not correlated, suggesting the ureagenesis has a specific physiological role and is not simply an alternative end-point to ammonia. In starved limpets urea excretion at first increased by at least ×2, and then declined to low levels after 44 days. Ammonia excretion also increased, but only after 20 days, and then stayed high until at least day 44. These different patterns confirm the independent roles of ammonia and urea production in Nacella. |
format |
Article in Journal/Newspaper |
author |
Clarke, Andrew Prothero-Thomas, Elizabeth Whitehouse, Michael J. |
spellingShingle |
Clarke, Andrew Prothero-Thomas, Elizabeth Whitehouse, Michael J. Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
author_facet |
Clarke, Andrew Prothero-Thomas, Elizabeth Whitehouse, Michael J. |
author_sort |
Clarke, Andrew |
title |
Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
title_short |
Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
title_full |
Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
title_fullStr |
Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
title_full_unstemmed |
Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908) |
title_sort |
nitrogen excretion in the antarctic limpet nacella concinna (strebel, 1908) |
publisher |
Oxford University Press |
publishDate |
1994 |
url |
http://nora.nerc.ac.uk/id/eprint/515942/ https://doi.org/10.1093/mollus/60.2.141 |
long_lat |
ENVELOPE(-60.783,-60.783,-62.467,-62.467) |
geographic |
Antarctic The Antarctic Nacella |
geographic_facet |
Antarctic The Antarctic Nacella |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Clarke, Andrew orcid:0000-0002-7582-3074 Prothero-Thomas, Elizabeth; Whitehouse, Michael J. 1994 Nitrogen excretion in the Antarctic limpet Nacella concinna (Strebel, 1908). Journal of Molluscan Studies, 60 (2). 141-147. https://doi.org/10.1093/mollus/60.2.141 <https://doi.org/10.1093/mollus/60.2.141> |
op_doi |
https://doi.org/10.1093/mollus/60.2.141 |
container_title |
Journal of Molluscan Studies |
container_volume |
60 |
container_issue |
2 |
container_start_page |
141 |
op_container_end_page |
147 |
_version_ |
1766251637270118400 |