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Keywords: urine
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Journal Articles
J Exp Biol (2020) 223 (20): jeb232694.
Published: 29 October 2020
... gills, may be exceptionally important in ionoregulation and nitrogen (N) waste excretion, with support of kidney function by direct O 2 supply from the airspace. We tested these ideas by continuous urine collection and gill flux measurements in ∼700 g fish. ATPase activities were many-fold greater...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (9): jeb198259.
Published: 09 May 2019
... tolerant of air exposure, and experiences severe hypoxia both in its natural habitat and in aquaculture. To study the ability of M. albus to compensate for respiratory acidosis, we implanted catheters to sample both arterial blood and urine during hypercapnia (4% CO 2 ) in either water or air, or during...
Journal Articles
J Exp Biol (2017) 220 (24): 4689–4702.
Published: 15 December 2017
...) empty compartment (control). By injecting females with a blue dye to visualize urine pulses, we found that gravid females show context-dependent urination, exhibiting higher urination rates in the presence of dominant males (reproductive context) and mouth brooding females (aggressive contexts). Further...
Journal Articles
J Exp Biol (2017) 220 (11): 2057–2065.
Published: 01 June 2017
... in aquaculture is the poor reproductive performance of hatchery-bred males. Is chemical communication involved in the reproduction of this species? Urine, intestinal fluid and mucus samples were taken from adult fish (wild-caught and hatchery-bred) over the spawning season (March–May), and assessed for olfactory...
Journal Articles
J Exp Biol (2014) 217 (8): 1286–1296.
Published: 15 April 2014
...Michiya Kamio; Manfred Schmidt; Markus W. Germann; Julia Kubanek; Charles D. Derby Female blue crabs ( Callinectes sapidus ) in their pubertal moult stage release unidentified sex pheromone molecules in their urine, causing males to respond with courtship behaviours including a display called...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (1): 68–74.
Published: 01 January 2012
... cichlid fish ( Astatotilapia burtoni ) use urine signals during social interactions, and demonstrate that this signaling depends on social context (reproductive; territorial) and on available sensory information (visual cues; full interaction). We injected males with dye to visualize urine pulses...
Journal Articles
J Exp Biol (2003) 206 (11): 1845–1854.
Published: 01 June 2003
..., and possible cooling associated with increased evaporative water loss, energetic expenditure in recovering solutes at the kidneys, and potential electrolyte loss. Table 3. Values for minimum and maximum urine or voided cloacal fluid osmolality in the three main radiations of nectarivorous birds...
Journal Articles
J Exp Biol (2002) 205 (9): 1221–1231.
Published: 01 May 2002
... leptodactylus ) in which we employed a new method:visualisation of urine using the dye Fluorescein. The probability of urine release is greater during fights than during non-social activities or inactivity. The eventual winners are more likely to release urine during fights than the eventual losers. In both...
Journal Articles
J Exp Biol (2001) 204 (11): 1831–1844.
Published: 01 June 2001
... and urine concentrating ability, (ii) sources of water, (iii) the effects of feeding, fasting and diving, (iv) the renal responses to infusions of varying salinity and (v) hormonal regulation. The kidneys of pinnipeds and cetaceans are reniculate in structure, unlike those of terrestrial mammals (except...
Journal Articles
J Exp Biol (1991) 161 (1): 315–331.
Published: 01 November 1991
...S. MORRIS; H. H. TAYLOR; P. GREENAWAY The branchial chambers of the terrestrial anomuran Birgus latro L. were examined as potential sites for urine reprocessing. The antennal glands opened at the bases of the second antennae within the anterior extension of the branchial chambers. The adjacent...
Journal Articles
J Exp Biol (1990) 152 (1): 505–519.
Published: 01 September 1990
...PETER GREENAWAY; H. H. TAYLOR; S. MORRIS Primary urine is formed by filtration in the antennal organ of Birgus latro L. Urine isosmotic with the haemolymph is released into the anterior branchial chambers where substantial reabsorption of water and ions may occur. Some of the branchial fluid...