Release rates of ammonia and urea by pulmonate snails with reference to Biomphalaria glabrata: standardization of procedures for intra- and inter-species comparison

Ismail Mat, . and Thomas J.D., . Release rates of ammonia and urea by pulmonate snails with reference to Biomphalaria glabrata: standardization of procedures for intra- and inter-species comparison. pp. 77-88. ISSN 0126-8643

Intra- and inter-species comparisons between the release rates of ammonia and urea were shown to increase significantly with increasing snail biomass. On the other hand the weight specific excretory rates as micromoles/g (total wet weight)/day) of ammonia and urea were shown to decrease significantly with increasing snail biomass. There were also significant differences in the majority of cases when the inter-species comparisons of weight specific excretory rates of ammonia and urea were considered. The inter-species variation in the rates of excretion of ammonia and urea were also shown to be related to the inter-specific differences between the proportion of dry body weight and shell weight. Ecophysiological aspects of nitrogen metabolism in various species of freshwater snails were discussed

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Abstract

Intra- and inter-species comparisons between the release rates of ammonia and urea were shown to increase significantly with increasing snail biomass. On the other hand the weight specific excretory rates as micromoles/g (total wet weight)/day) of ammonia and urea were shown to decrease significantly with increasing snail biomass. There were also significant differences in the majority of cases when the inter-species comparisons of weight specific excretory rates of ammonia and urea were considered. The inter-species variation in the rates of excretion of ammonia and urea were also shown to be related to the inter-specific differences between the proportion of dry body weight and shell weight. Ecophysiological aspects of nitrogen metabolism in various species of freshwater snails were discussed

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Item Type:	Article
Additional Information:	Summaries (En Ms)
AGROVOC Term:	CARACOLES DE TIERRA
AGROVOC Term:	EXCRECION
AGROVOC Term:	AMONIACO
AGROVOC Term:	UREA
AGROVOC Term:	BIOMPHALARIA GLABRATA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:57
URI:	http://webagris.upm.edu.my/id/eprint/20972

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