Na++K+-ATPase in gills of aquatic crustacea

Lucu, Čedomil; Towle, David W.

doi:10.1016/s1095-6433(03)00064-3

Cited by 269 publications

(207 citation statements)

References 121 publications

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“…Changes in salinity of freshwater systems also change the activities of ATPases for ion regulation [37] and therefore modulate energy intake, and thereby the impact that individuals have on their ecological community.…”

Section: Ecological Success Is Coupled To Environmental Conditions VImentioning

confidence: 99%

Determining environmental causes of biological effects: the need for a mechanistic physiological dimension in conservation biology

Seebacher

Franklin

2012

Phil. Trans. R. Soc. B

198

187

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The emerging field of Conservation Physiology links environmental change and ecological success by the application of physiological theory, approaches and tools to elucidate and address conservation problems. Human activity has changed the natural environment to a point where the viability of many ecosystems is now under threat. There are already many descriptions of how changes in biological patterns are correlated with environmental changes. The next important step is to determine the causative relationship between environmental variability and biological systems. Physiology provides the mechanistic link between environmental change and ecological patterns. Physiological research, therefore, should be integrated into conservation to predict the biological consequences of human activity, and to identify those species or populations that are most vulnerable.Keywords: global change; climate change; land clearing; adaptation; acclimation; ecological successConservation Physiology may be defined as the application of physiological theory, approaches and tools to elucidate and address conservation problems with the aim to provide a mechanistic understanding of how environmental disturbances and threatening processes impact physiological responses and thereby ecological function, population persistence, and species survival.

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Section: Ecological Success Is Coupled To Environmental Conditions VImentioning

confidence: 99%

Determining environmental causes of biological effects: the need for a mechanistic physiological dimension in conservation biology

Seebacher

Franklin

2012

Phil. Trans. R. Soc. B

198

187

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“…A subject of topical interest is the involvement of CHH in ionoregulatory processes (Charmantier-Daures et al, 1994;Charmantier et al, 1999;Chung et al, 1999;Townsend et al, 2001;Serrano et al, 2003;Chung and Webster, 2006). Whilst it is known that sinus gland extracts cause rapid and reversible changes in transepithelial potentials, and Na + transport in isolated perfused gills of Pachygrapsus marmoratus (Spanings-Pierrot et al, 2000), the precise mechanisms regulated by CHH in crustacean gill tissues remain poorly investigated, despite our extensive knowledge of branchial membrane exchangers and pumps (Lucu, 1990;Onken et al, 1991;Onken and Putzenlechner, 1995;Lucu and Towle, 2003;Weihrauch et al, 2004;Tsai and Lin, 2007;Masui et al, 2008). Additionally, because the insect equivalent of CHH-ion transport peptide (ITP) has long been known to stimulate water uptake in the locust hindgut by opening Cl -channels (Phillips and Audsley, 1995;Phillips et al, 1998), it is surprising that the ionoregulatory processes controlled by CHH have not attracted further interest.…”

Section: Introductionmentioning

confidence: 99%

Roles of crustacean hyperglycaemic hormone in ionic and metabolic homeostasis in the Christmas Island Blue crabDiscoplax celeste

Turner

Webster

Morris

2012

Journal of Experimental Biology

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SUMMARYThere is a growing body of evidence implicating the involvement of crustacean hyperglycaemic hormone (CHH) in ionic homeostasis in decapod crustaceans. However, little is known regarding hormonally influenced osmoregulatory processes in terrestrial decapods. As many terrestrial decapods experience opposing seasonal demands upon ionoregulatory physiologies, we reasoned that these would make interesting models in which to study the effect of CHH upon these phenomena. In particular, those (tropical) species that also undergo seasonal migrations might be especially informative, as we know relatively little regarding the nature of CHHs in terrestrial decapods, and hormonally mediated responses to seasonal changes in metabolic demands might also be superimposed or otherwise integrated with those associated with ionic homeostasis. Using Discoplax celeste as a model crab that experiences seasonal extremes in water availability, and exhibits diurnal and migratory activity patterns, we identified two CHHs in the sinus gland. We biochemically characterised (cDNA cloning) one CHH and functionally characterised (in terms of dose-dependent hyperglycaemic responses and glucose-dependent negative feedback loops) both CHHs. Whole-animal in situ branchial chamber 22 NaCl perfusion experiments showed that injection of both CHHs increased gill Na + uptake in a seasonally dependent manner, and 51Cr-EDTA clearance experiments demonstrated that CHH increased urine production by the antennal gland. Seasonal and salinity-dependent differences in haemolymph CHH titre further implicated CHH in osmoregulatory processes. Intriguingly, CHH appeared to have no effect on gill Na + /K + -ATPase or V-ATPase activity, suggesting unknown mechanisms of this hormoneʼs action on Na + transport across gill epithelia.Supplementary material available online at

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“…Nutritional supplements that improve the osmoregulatory capacity of shrimp have been proposed as another method of mitigating low-salinity water (Gong et al 2004;Roy et al 2006). Arginine could be one such supplement since it is easily phosphorylated as a high-energy derivative controlling cell content of ATP (Schoffeniels 1970), which is necessary for driving the Na þ -K þ ATPase pump during osmoregulation (Lucu and Towle 2003). Gong et al (2004) and Saoud and Davis (2005) proposed dietary supplementation of K þ and energy compounds to remedy low concentrations in culture waters.…”

mentioning

confidence: 99%

Chelated Potassium and Arginine Supplementation in Diets of Pacific White Shrimp Reared in Low‐Salinity Waters of West Alabama

2007

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Na++K+-ATPase in gills of aquatic crustacea

Cited by 269 publications

References 121 publications

Determining environmental causes of biological effects: the need for a mechanistic physiological dimension in conservation biology

Determining environmental causes of biological effects: the need for a mechanistic physiological dimension in conservation biology

Roles of crustacean hyperglycaemic hormone in ionic and metabolic homeostasis in the Christmas Island Blue crabDiscoplax celeste

Chelated Potassium and Arginine Supplementation in Diets of Pacific White Shrimp Reared in Low‐Salinity Waters of West Alabama

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