...Ian F. Burgess ABSTRACT Sucking lice feed on blood and therefore ingest more water than they require for maintaining hydration. This water must be excreted; however, unlike other blood-feeding insects, they do not produce urine but do become dehydrated within hours if unable to feed. Using human...

... waste excretion and probably also acid–base balance. * Author for correspondence ( [email protected] ) Competing interests The authors declare no competing or financial interests. 29 1 2019 29 4 2019 © 2019. Published by The Company of Biologists...

.... 11 1 2013 6 3 2013 © 2013. Published by The Company of Biologists Ltd 2013 Drosophila integral protein DRIP aquaglyceroporin rectum midgut gastric caeca excretion coleopteran AQP Water handling is a fundamental and essential daily task for many terrestrial animals...

... and multidrug resistance-associated proteins in the excretion of toxins. e-mail: [email protected] 18 9 2008 2009 insect Malpighian tubule midgut ion-selective microelectrodes excretion dietary toxins haematophagy When a blood-feeding insect such as Rhodnius ingests...

... of conjugates in the surrounding water. Apparently, plasma thyroid hormone conjugates in tilapia originate from the thyroid gland and function in the excretion of thyroid hormones. Our data illustrate the variability in teleostean thyroidology, an important notion for those studying thyroid physiology...

... in post-gastrula embryos is proposed: osmotic uptake of water is balanced by excretion of water and salts via the dorsal organ and salt loss is balanced by active uptake over the general embryonic ectoderm. 3 H and 22 Na radioactivities of the eggs generally did not decline as first order exponentials...

... (e-mail: [email protected] ) 22 6 2005 © The Company of Biologists Limited 2005 2005 excretion Malpighian tubule diuretic hormone natriuresis mosquito Anopheles gambiae Aedes aegypti Female mosquitoes ingest blood meals that are equivalent to more than twice...

... excretes NH 4 + in ammonia loading conditions. For such a mechanism to operate efficaciously the fish must be able to prevent back flux of NH 3 . P. schlosseri could lower the pH of 50 volumes (w/v) of 50% seawater in an artificial burrow from pH 8.2 to pH 7.4 in 1 day, and established an ambient ammonia...

... potassium was not significantly decreased in the D flies during desiccation but was reduced(i.e. excreted) in the C flies; hence, we suggest that the potassium content paralleled tissue water level. References Albaghdadi, L. F. ( 1987 ). Effects of starvation and dehydration on ionic balance...

... of SW crabs. * Author for correspondence (e-mail: [email protected] ) 11 7 2002 © The Company of Biologists Limited 2002 2002 Gecarcoidea natalis land crab osmoregulation chloride reabsorption excretion dopamine cyclic AMP gill Although crabs...

... intake rates were high or when protein or salt intake rates were low. We examined the influence of water, electrolyte and protein intake and of T a on the excretion of ammonia, urea and urate (uric acid and its salts) in nectarivorous Palestine sunbirds( Nectarinia osea ). The proportion of ammonia...

...N. T. Frick; P. A. Wright SUMMARY At a field site in Belize, mangrove killifish Rivulus marmoratus inhabit hypersaline waters (up to 48 ‰) containing approximately 1 mmol l –1 ammonia. We tested the hypotheses that R. marmoratus modify their nitrogen metabolism and excretion (i) by accumulating...

...-Liss. Chadwick, T. D. and Wright, P. A. ( 1999 ). Nitrogen excretion and expression of urea cycle enzymes in the Atlantic cod ( Gadus morhua L.): a comparison of early life stages with adults. J. Exp. Biol . 202 , 2653 –2662. Daniels, H. V., Boyd, C. E. and Minton, R. V. ( 1987 ). Acute...

...Bendik F. Terjesen; Terry D. Chadwick; Johan A. J. Verreth; Ivar Rønnestad; Patricia A. Wright SUMMARY Embryos and larvae of the African catfish Clarias gariepinus excrete significant quantities of urea. The present study focused on the potential urea-generating pathways during early development...

... 2000 © 2000 by Company of Biologists 2000 mudskipper Periophthalmodon schlosseri ammonia excretion mitochondria-rich cell gill Na + /H + exchange Na + /K + -ATPase CFTR Na + /K + /2Cl − cotransport carbonic anhydrase H + -ATPase The mudskipper Periophthalmodon...

... . 10.1016/0196-9781(95)02096-9 Coast , G. M. ( 1998a ). The influence of neuropeptides on Malpighian tubule writhing and its significance for excretion . Peptides 19 , 469 – 480 . 10.1016/S0196-9781(97)00461-0 Coast , G. M. ( 1998b ). The regulation of primary urine...

... in duration and energy reserves are accumulated. It was anticipated that the unusual character of leptocephalus development would be reflected in the energy budget of the larva. This study describes the allocation of energy to metabolism and excretion, two important elements of the energy budget. Metabolic...

.... The decline in thiosulphate levels followed a decreasing double-exponential function. Thiosulphate was not further oxidized to sulphite or sulphate but was excreted into the sea water. References Almgren , T. and Hagström , I. ( 1974 ). The oxidation rate of sulphide in sea water . Water...

... of excretory fluid more thoroughly. 24 04 1995 © The Company of Biologists Limited 1995 reabsorption Malpighian tubules potassium ions fluid transport calcium transport excretion pH Drosophila melanogaster . The isolated Malpighian tubules of adult female Drosophila...

...A. G. Butt; H. H. Taylor ABSTRACT The roles of coxal and anal excretion in the regulation of haemolymph osmolality, [Na + ] and [K + ] were studied in the mygalomorph spider Porrhothele antipodiana (mass 0.7–1.0 g) under differing conditions of feeding and hydration state. Dehydration of starved...