High Ammonia and Low pH in the Urine of the Ghost Crab, Ocypode quadrata

Nitrogen excreted into the urine (100 mM were found in the urine of laboratory-held Ocypode quadrata, suggesting that this notion might not be applicable to all crustaceans. To address this issue, hemolymph and urine were removed from freshly captured O. quadrata and analyzed for nitrogenous catabol...

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Published in:The Biological bulletin (Lancaster) 1994-06, Vol.186 (3), p.342-348
Main Authors: De Vries, M. C., Wolcott, D. L., Holliday, C. W.
Format: Article
Language:English
Subjects:
Adenosine triphosphatases
Ammonia
Analysis
Crabs
Crustaceans
Digestive system
Excretion
Hemolymph
Marine
Marine biology
Maxillary glands
Nitrogen
Nitrogen metabolism
Ocypode quadrata
Physiological aspects
Physiology
Urinalysis
Urine
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Wolcott, D. L.
Holliday, C. W.
description Nitrogen excreted into the urine (100 mM were found in the urine of laboratory-held Ocypode quadrata, suggesting that this notion might not be applicable to all crustaceans. To address this issue, hemolymph and urine were removed from freshly captured O. quadrata and analyzed for nitrogenous catabolites and major ions. Hemolymph composition was similar to that of other crustaceans, but the urine was acidic (X̄ pH = 5.50) and contained ammonia, often at >100 mM. Other nitrogenous catabolites in the urine (urea, amino acids, and uric acid) were much less concentrated: totaling
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ispartof The Biological bulletin (Lancaster), 1994-06, Vol.186 (3), p.342-348
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recordid cdi_jstor_primary_10_2307_1542280
source JSTOR Archival Journals and Primary Sources Collection
subjects Adenosine triphosphatases
Ammonia
Analysis
Crabs
Crustaceans
Digestive system
Excretion
Hemolymph
Marine
Marine biology
Maxillary glands
Nitrogen
Nitrogen metabolism
Ocypode quadrata
Physiological aspects
Physiology
Urinalysis
Urine
title High Ammonia and Low pH in the Urine of the Ghost Crab, Ocypode quadrata
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