... was unchanged by salinity in the aquatic insects, whereas ion transport rates were positively correlated with higher salinities. In contrast, when we examined the ionic influx rates in the freshwater snail and crustaceans, we found that Ca uptake rates were highest under the most dilute conditions, while Na...

... in less than two hours. Diuresis is performed by the excretory system, consisting of the Malpighian tubules and gut, under the control of diuretic and anti-diuretic factors. We investigated the ion transport machinery triggered by stimulation with the diuretic factor serotonin in the anterior midgut (i.e...

... temperature. Absorption Acclimation Adaptation Assay Ion transport Rectum Renal system Temperature Maintenance of a relatively stable extracellular environment is essential for cell function and ultimately survival of most animals ( Bernard, 1872 ). The concentrations of major ions...

... of the Malpighian tubules enable Na + and K + reabsorption by the SCs. We also demonstrated that in ion-loaded animals, PCs switch from Na + /K + secretion to reabsorption , resulting in an ion-transporting phenotype similar to that of tubules with pharmacologically blocked GJs. Concomitantly, mRNA abundance...

...Natalie M. D'Silva; Michael J. O'Donnell ABSTRACT We report measurements of ion transport across the gastric caecum of larvae of Aedes aegypti , a vector of yellow fever that inhabits a variety of aquatic habitats ranging from freshwater to brackish water. We provide the first measurements...

.../user-licence-1-1/ Summary: Different subpopulations of oyster hemocytes are specialized for biomineralization or immune functions as revealed by functional differences and gene expression profiles. Gene expression Ion transport Matrix protein Exoskeleton Cell–cell interaction...

.... L.R., H.C. and A.D. co-wrote and co-edited the manuscript. Competing interests The authors declare no competing financial interests. 1 6 2014 2 9 2014 © 2014. Published by The Company of Biologists Ltd 2014 Na + /K + -ATPase V-ATPase Ion transport Epithelium...

... et al., 2008 ; Wang and Fisher, 1997 ; Zhang and Wang, 2007 ) uptake. In insects, species within a single family utilize the same specialized structures for ion transport (e.g. chloride cells, chloride epithelia, anal papillae); therefore, the increased surface area:mass ratios present in smaller...

...+-ATPase localization in the rectum, as observed previously for the distantly related saline-tolerant species A. albimanus. © 2013. Published by The Company of Biologists Ltd 2013 Anopheles coluzzii Anopheles gambiae Anopheles merus DAR cells ion transport malaria vector mosquito Na...

... in circulating levels of growth hormone and cortisol indicate that these hormones may be instrumental in upregulating NKAα1b during smolt development. Ion transporter abundance was quantified by western immunoblotting as previously outlined ( Pelis et al., 2001 ). Gill tissue was homogenized in 10 volumes...

... epithelial ion transport. In the anterior intestine of the sea bream, the fish adapted to low salinity show a highly variable secretory current in the voltage-clamp experiments in Ussing chambers. This could reflect the absolute increase in the expression of NKCC1 and the CFTR , mechanisms that constitute...

... and transepithelial ion transport. Calculated electrochemical gradients for K + and Cl − across the basolateral membrane show they are actively transported into principal cells, and basolateral Ba 2+ -sensitive K + channels do not contribute to net transepithelial K + transport and fluid secretion. A basolateral Cl...

...Olimpia Del Duca; Azadeh Nasirian; Vladimir Galperin; Andrew Donini SUMMARY The anal papillae of freshwater mosquito larvae are important sites of NaCl uptake, thereby acting to offset the dilution of the hemolymph by the dilute habitat. The ion-transport mechanisms in the anal papillae...

... metamorphosis ion-selective microelectrode ion transport calcification embryonic development © 2010. 2010 6 9 2010 ...

... in the promotion of intracellular binding of Na + over K + , which would potentially favor Na + —H + exchange over Na + —K + exchange ( Jorgensen, 2008 ). More research with the native proteins will be necessary to determine whether altered ion transport kinetics characterize the NKA α1a and α1b isoforms...

... -216. Harvey, W. R., Cioffi, M. and Wolfersberger, M. G. ( 1981 ). Portasomes as coupling factors in active ion transport and oxidative phosphorylation. Am. Zool. 21 , 775 -791. Harvey, W. R., Cioffi, M., Dow, J. A. T. and Wolfersberger, M. G. ( 1983 ). Potassium ion transport ATPase...

... likely to newly arise following transfer from seawater to freshwater but not to transform from preexisting type-I MRCs. Although type-I MRCs showed only Na + /K + -ATPase immunoreactivity, they might express other ion-transport proteins that were not examined in this study. One possibility...

... the pharmacological studies and the ontogenetic differences observed will be outlined below, in light of the current models of ion transport in weak and strong hyperosmoregulator crustaceans. These models have been recently proposed based on structural, biochemical, pharmacological and physiological studies...

...Carsten Hille; Bernd Walz SUMMARY Ion-transporting acinar peripheral cells in cockroach salivary glands are innervated by dopaminergic and serotonergic fibres, but saliva-modifying duct cells are innervated only by dopaminergic fibres. We used microfluorometry to record intracellular Na + , Ca 2...

... in hyperregulating aquatic animals. J. Exp. Biol. 207 , 1439 -1452. Kleyman, T. R. and Cragoe, E. J. J. ( 1988 ). Amiloride and its analogs as tools in the study of ion transport. J. Membr. Biol. 105 , 1 -21. Krogh, A. ( 1938 ). The active absorption of ions in some freshwater animals J. Comp...