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Keywords: excretion
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Journal Articles
J Exp Biol (2022) 225 (7): jeb244041.
Published: 19 April 2022
...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...
Journal Articles
J Exp Biol (2019) 222 (10): jeb200691.
Published: 20 May 2019
... waste excretion and probably also acid–base balance. The protocols for the inverse Ramsay assay and SIET developed here will enable future studies on the eversible vesicles. Together with molecular genetic methods, they will help to identify what specific transporters (such as ATPases, water and ion...
Journal Articles
J Exp Biol (2013) 216 (14): 2564–2572.
Published: 15 July 2013
.... 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...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (3): 363–372.
Published: 1 February 2009
... and multidrug resistance-associated proteins in the excretion of toxins. Water movements during diuresis are a passive osmotic consequence of active transepithelial ion secretion. Early measurements of osmotic permeability of up to 4.3× 10 –3 cm s –1 osmol –1 , equivalent to 5.8×10 –3 cm s –1 osmol –1...
Journal Articles
J Exp Biol (2007) 210 (22): 4005–4015.
Published: 15 November 2007
... 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...
Includes: Supplementary data
Journal Articles
J Exp Biol (2006) 209 (8): 1487–1501.
Published: 15 April 2006
... 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. * Author for correspondence (e-mail: harry.taylor@canterbury.ac.nz ) 13 2 2006 ©...
Journal Articles
J Exp Biol (2005) 208 (17): 3281–3291.
Published: 1 September 2005
... and expelled through the anus. excretion Malpighian tubule diuretic hormone natriuresis mosquito Anopheles gambiae Aedes aegypti © The Company of Biologists Limited 2005 2005 22 6 2005 * Author for correspondence (e-mail: g.coast@bbk.ac.uk ) To demonstrate further...
Journal Articles
J Exp Biol (2004) 207 (5): 787–801.
Published: 15 February 2004
... 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...
Journal Articles
J Exp Biol (2003) 206 (16): 2779–2786.
Published: 15 August 2003
... 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. The flies were from five large, outbred populations (designated D 1 -D 5 ) of Drosophila melanogaster L...
Journal Articles
J Exp Biol (2002) 205 (20): 3251–3260.
Published: 15 October 2002
... for correspondence (e-mail: h.taylor@zool.canterbury.ac.nz ) 11 7 2002 © The Company of Biologists Limited 2002 2002 Gecarcoidea natalis land crab osmoregulation chloride reabsorption excretion dopamine cyclic AMP gill Although crabs invariably produce urine that is nearly...
Journal Articles
J Exp Biol (2002) 205 (12): 1735–1745.
Published: 15 June 2002
... 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...
Journal Articles
J Exp Biol (2002) 205 (1): 79–89.
Published: 1 January 2002
...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...
Journal Articles
J Exp Biol (2001) 204 (12): 2145–2154.
Published: 15 June 2001
... amino acid ammonia excretion toxicity carbamoyl phosphate synthetase III glutamine synthetase hatching urea yolk rainbow trout Oncorhynchus mykiss. Recently, significant activities of the ornithine–urea cycle (OUC) enzymes carbamoyl phosphate synthetase III (CPSase III), ornithine...
Journal Articles
J Exp Biol (2001) 204 (12): 2155–2165.
Published: 15 June 2001
...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...
Journal Articles
J Exp Biol (1993) 177 (1): 287–292.
Published: 1 April 1993
...S. H. P. MADDRELL; M. J. O'DONNELL 4 12 1992 © 1993. 1993 potassium ions sodium ions excretion fluid secretion Rhodnius prolixus salivary glands Calliphora vicina Malpighian tubules epithelial transport gramicidin D. 287J. exp. Biol. 177, 287 292 (1993) Printed...
Journal Articles
J Exp Biol (1984) 108 (1): 195–204.
Published: 1 January 1984
... substrate. Thus, embryos are ureotelic throughout development, and the pattern of accumulation of the primary nitrogenous waste is influenced by hydration of the environment. Embryos excretion turtles © 1984 by Company of Biologists 1984 18 7 1983 J. exp. Biol. 108, 195-204 (1984) I 9...
Journal Articles
J Exp Biol (1983) 105 (1): 107–125.
Published: 1 July 1983
... 3 appears to account adequately for ammonia excretion in the rainbow trout; 90 ± 10% of the excreted ammonia appears to originate from the blood, rather than from de novo synthesis of ammonia in the gills. During the high external ammonia treatments, the fish reached a steady state with a net inward...