Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)

This study evaluates the effects of starvation on the physiological aspects of the southern king crab, Lithodes santolla. Adult males of this crab species were maintained in starving conditions for 12 days. Every 3 days (i.e., 0, 3, 6, 9 and 12), subgroups were taken to evaluate oxygen consumption,...

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Autores principales:	Comoglio,Laura, Goldsmit,Jesica, Amin,Oscar
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2008
Materias:	Crabs oxygen uptake ammonia excretion lipids
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000200012
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spelling	oai:scielo:S0718-195720080002000122009-01-27Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)Comoglio,LauraGoldsmit,JesicaAmin,Oscar Crabs oxygen uptake ammonia excretion lipids This study evaluates the effects of starvation on the physiological aspects of the southern king crab, Lithodes santolla. Adult males of this crab species were maintained in starving conditions for 12 days. Every 3 days (i.e., 0, 3, 6, 9 and 12), subgroups were taken to evaluate oxygen consumption, ammonia excretion, O:N atomic ratio and biochemical composition of the hepatopancreas. The hepatosomatic index (calculated individually as the percentage of hepatopancreas wet mass in relation to the total body wet weight) was lower at 12 days starving period, coincidentally with the minor amount of hepatopancreatic protein. No significant differences in the relative biochemical composition (percentage of water, organic matter and ash) were detected. The lipid content was not significantly different during the experiment; nevertheless the higher value was detected at 3 days of starvation. Between the 3 and 9 days of fasting period ammonia excretion and hepatopancreatic protein were higher and the trypsin activity, lower. These results could indicate that protein catabolism was the most important in these periods. Besides, the lower values of O:N detected for all periods confirm this effect. On the ninth day of starvation oxygen consumption increased together with a high value of ammonia excretion probably due to an extra energy demand produced by starvation. We conclude that L. santolla in the experimental time-range study uses protein as the primary source of energy.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.43 n.2 20082008-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000200012en10.4067/S0718-19572008000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Crabs oxygen uptake ammonia excretion lipids
spellingShingle	Crabs oxygen uptake ammonia excretion lipids Comoglio,Laura Goldsmit,Jesica Amin,Oscar Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
description	This study evaluates the effects of starvation on the physiological aspects of the southern king crab, Lithodes santolla. Adult males of this crab species were maintained in starving conditions for 12 days. Every 3 days (i.e., 0, 3, 6, 9 and 12), subgroups were taken to evaluate oxygen consumption, ammonia excretion, O:N atomic ratio and biochemical composition of the hepatopancreas. The hepatosomatic index (calculated individually as the percentage of hepatopancreas wet mass in relation to the total body wet weight) was lower at 12 days starving period, coincidentally with the minor amount of hepatopancreatic protein. No significant differences in the relative biochemical composition (percentage of water, organic matter and ash) were detected. The lipid content was not significantly different during the experiment; nevertheless the higher value was detected at 3 days of starvation. Between the 3 and 9 days of fasting period ammonia excretion and hepatopancreatic protein were higher and the trypsin activity, lower. These results could indicate that protein catabolism was the most important in these periods. Besides, the lower values of O:N detected for all periods confirm this effect. On the ninth day of starvation oxygen consumption increased together with a high value of ammonia excretion probably due to an extra energy demand produced by starvation. We conclude that L. santolla in the experimental time-range study uses protein as the primary source of energy.
author	Comoglio,Laura Goldsmit,Jesica Amin,Oscar
author_facet	Comoglio,Laura Goldsmit,Jesica Amin,Oscar
author_sort	Comoglio,Laura
title	Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
title_short	Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
title_full	Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
title_fullStr	Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
title_full_unstemmed	Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)
title_sort	starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab lithodes santolla (molina, 1782)
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000200012
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Starvation effects on physiological parameters and biochemical composition of the hepatopancreas of the southern king crab Lithodes santolla (Molina, 1782)

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