... Osmoregulation Excretion Water absorption Scanning ion-selective electrode technique Springtails (Collembola) are a basal lineage of Hexapoda, which is a group of terrestrial arthropods that also includes the insects ( Hopkin, 1997 ; Misof et al., 2014 ). Compared to the insects, springtails lack...

... response of the sea bream ( Sparus aurata L.) to relevant changes of external salinity (12, 35 and 55 p.p.t.), focusing on the anterior intestine and in the less-often studied rectum. Intestinal water absorption, epithelial HCO 3 − secretion and gene expression of the main molecular mechanisms (SLC26a6...

... of the marine fish intestine. * Author for correspondence ( [email protected] ) 21 10 2009 © 2010. 2010 anion exchange SLC4 water absorption carbonic anhydrase acid–base balance During the last decade, intestinal HCO 3 – secretion via apical Cl – /HCO 3 – exchange...

... in the anterior intestine and probably acts to control luminal osmotic pressure while enhancing apical anion exchange; both processes with implications for water absorption. Cytosolic carbonic anhydrase (CAc) activity facilitates CO 2 hydration to fuel apical anion exchange while membrane-associated, luminal CA...

... statistically significant difference from control (see text for detail). * Author for correspondence (e-mail: [email protected] ) 19 3 2009 2009 osmoregulation water absorption seawater pH-stat titration fish Most vertebrates residing in the marine environment...

.... Drinking rate decreased substantially at 12 h (32% of control value) and remained suppressed after 3 and 7 days in fresh water (34 and 43%). By contrast, there was a transient increase in the capacity for water absorption measured across isolated intestines in vitro (3.3- and 2.6-fold at 12 h and 3 days...

...Arne L. Viborg; Tobias Wang; Stanley D. Hillyard SUMMARY Blood cell flux (BCF) in the pelvic skin of Bufo marinus was lower than Bufo alvarius when toads rehydrated from deionised water (DI) or 50 mmol l –1 NaCl (NaCl). Despite the lower BCF in B. marinus , water absorption was not different...

...Mayumi Aoki; Toyoji Kaneko; Fumi Katoh; Sanae Hasegawa; Naoaki Tsutsui; Katsumi Aida SUMMARY To elucidate the mechanisms associated with water absorption in the intestine, we compared drinking and intestinal water absorption in freshwater-and seawater-adapted Japanese eels, and investigated...

... tell a cautionary tale for the estimation of food intake based on water flux rates in nectar-feeding animals: nectar intake will be underestimated if water absorption is not complete. Our data also suggest that additional attention needs to be paid to the issue of biological fractionation when using...

..., but on a distinct receptor from that for adrenaline, to antagonize the inhibition of NaCl and water absorption by 5-HT and ACh in the seawater eel intestine. Table 3. Effects of mammalian somatostatin (SS-25) on transepithelial potential difference (PD), net ion fluxes ( J net Na , J net...