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Keywords: amino acid
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Journal Articles
J Exp Biol (2021) 224 (6): jeb238485.
Published: 26 March 2021
... elevated P CO 2 or the consequent reduction in seawater pH and, if the former, the possible involvement of carbonic anhydrase, the enzyme responsible for the hydration of CO 2 and production of carbonic acid. Olfactory sensitivity to amino acids was assessed by extracellular multi-unit recording from the...
Journal Articles
J Exp Biol (2018) 221 (8): jeb176313.
Published: 19 April 2018
...). The results indicate that T. squamosa absorbs exogenous urea, and the rate of urea uptake in the light was significantly higher than that in darkness. The DUR3-like coding sequence obtained from its ctenidium comprised 2346 bp, encoding a protein of 782 amino acids and 87.0 kDa. DUR3-like was...
Journal Articles
J Exp Biol (2018) 221 (4): jeb161489.
Published: 19 February 2018
... show differences in amino acids and biogenic amines. We took newly emerged bees and fed them with Nosema ceranae . At approximate nurse and forager ages, we employed an odor-associative conditioning assay using the proboscis extension reflex and two bioanalytical techniques to measure changes in brain...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (16): 2827–2832.
Published: 15 August 2012
...Naoko Toshima; Teiichi Tanimura SUMMARY Like mammals, insects need to ingest proteins from foods because they cannot synthesise several amino acids. Amino acids are also essential nutrients for Drosophila melanogaster , especially for female egg production, but how flies detect amino acids and how...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (20): 3449–3456.
Published: 15 October 2010
... comprise their olfactory organs. We also calculated the olfactory thresholds and relative effectiveness of amino acid odorants for each species. The olfactory organs varied in both the number of lamellae and lamellar surface area, which may be related to their general habitat, but neither correlated with...
Journal Articles
J Exp Biol (2009) 212 (16): 2532–2540.
Published: 15 August 2009
...(10‰) on olfactory responses to changes in environmental[Ca 2+ ] and [Na + ] and amino acids by the electro-encephalogram (EEG) recorded from the olfactory bulb. The sole showed olfactory responses to increases in environmental [Na + ] and decreases in environmental [Ca 2+ ]; sensitivity to Na + was...
Journal Articles
J Exp Biol (2009) 212 (8): 1092–1100.
Published: 15 April 2009
... attractant by bioassay-guided fractionation and high-performance liquid chromatography, and chemically identified it as the free-amino acid l -tryptophan ( l -Trp). In the present study, levels of this ecologically meaningful compound were quantified in various abalone tissues, and in freshly spawned eggs...
Journal Articles
J Exp Biol (2008) 211 (3): 382–390.
Published: 01 February 2008
.... gambiae sequences have 94, 74, 71 and 68%identity, respectively, to the amino acid sequence from D. punctata ( Table 1 ), while the sequences from A. mellifera and F. polyctena (with the exception of the last two unknown amino acids) are identical to the cockroach sequence( Table 1 ). Table 1...
Journal Articles
J Exp Biol (2007) 210 (11): 1971–1985.
Published: 01 June 2007
... met through the upregulation of intermediary metabolism. Arctic char intermediary metabolism was monitored during the initial 96 h of seawater acclimation through measurement of key enzymes in gill, liver, red and white muscle as well as tissue and blood free amino acid (FAA) levels, and plasma...
Journal Articles
J Exp Biol (2007) 210 (10): 1768–1775.
Published: 15 May 2007
... free amino acid,arginine, is abundant in fluids emitted by injured worms. Here, we demonstrate that arginine is a natural suppressant of TTX-stimulated larval escape behavior. Compared to a tapwater control, larvae initiated vigorous swimming in response to 10 –7 mol l –1 TTX. This excitatory response...
Journal Articles
J Exp Biol (2007) 210 (10): 1776–1785.
Published: 15 May 2007
... here) to those of conspecific larvae (as studied previously). Bioassays were performed in mountain streams,testing responses of free-ranging adults to 13 individual l -amino acids. Relative to stream water (controls), adults turned immediately upcurrent and moved to the source of arginine, glycine or...
Journal Articles
J Exp Biol (2005) 208 (15): 2885–2894.
Published: 01 August 2005
...Konrad Dabrowski; Bendik F. Terjesen; Yongfang Zhang; James M. Phang; Kyeong-Jun Lee SUMMARY The premise that a dietary dipeptide approach will improve the understanding of amino acid utilization in the fastest-growing vertebrate, the teleost fish, was tested by examining the muscle free amino acid...
Journal Articles
J Exp Biol (2004) 207 (12): 1993–2002.
Published: 15 May 2004
... considerable excretion of nitrogen as amino acids(4–10%), via the gills, and as protein (3–11%), probably via the body mucus. Use of anal sutures delineated an important role for the gastrointestinal tract in the production of ammonia-N and urea-N in fed fish, but amino acid-N and protein-N output by this...
Journal Articles
J Exp Biol (2003) 206 (20): 3625–3633.
Published: 15 October 2003
..., tolerance, and excretion. In Fish Physiology, vol. 20, Nitrogen Excretion (ed. P. A. Wright and P. M. Anderson), pp. 109 -148. San Diego: Academic Press. Iwata, K. ( 1988 ). Nitrogen metabolism in the mudskipper, Periophthalmus cantonensis : changes in free amino acids and related compounds in...
Journal Articles
J Exp Biol (2003) 206 (20): 3615–3624.
Published: 15 October 2003
... urea. Indeed, there were significant decreases in glutamate, glutamine and lysine levels in the livers of fish exposed to air, which led to a decrease in the total free amino acid content. This indirectly confirms that the specimen had reduced its rates of proteolysis and/or amino acid catabolism to...
Journal Articles
J Exp Biol (2003) 206 (17): 2931–2940.
Published: 01 September 2003
..., the supernatant fluid obtained was adjusted to pH 2.2 with 4 mol l -1 lithium hydroxide and diluted appropriately with 0.2 mol l -1 lithium citrate buffer (pH 2.2). FAAs were analyzed using a Shimadzu LC-6A amino acid analysis system (Kyoto, Japan) with a Shim-pack ISC-07/S1504 Li-type column...
Journal Articles
J Exp Biol (2003) 206 (14): 2473–2486.
Published: 15 July 2003
... exposure. Instead, ammonia produced through amino acid catabolism was detoxified to glutamine, leading to the accumulation of glutamine in the body during the first 72 h of aerial exposure. Complimenting the increased glutamine formation was a significant increase in glutamine synthetase activity in the...
Journal Articles
J Exp Biol (2003) 206 (13): 2241–2255.
Published: 01 July 2003
... standpoint of the receptor-mediated effects, but the molecular mechanisms involved in the termination of the numerous glutamatergic signals have only recently begun to receive attention. In vertebrates, glutamatergic signals are terminated by Na + /K + -dependent high-affinity excitatory amino acid...
Journal Articles
J Exp Biol (2003) 206 (4): 693–704.
Published: 15 February 2003
... highest level known in adult teleosts exposed to air or an ammonia-loading situation. The accumulated alanine could account for 70% of the deficit in ammonia excretion during this period, indicating that partial amino acid catabolism had occurred. This would allow the utilization of certain amino acids as...
Journal Articles
J Exp Biol (2003) 206 (2): 245–254.
Published: 15 January 2003
...Zhilin Liu; Bruce R. Stevens; Daniel H. Feldman; Matthias A. Hediger; William R. Harvey SUMMARY KAAT1, a K + -coupled, neutral amino acid transporter from larval insect midgut, differs from other members of the Na + :neurotransmitter transporter family (SNF) in two important ways: (1) it transports...