[PDF] Top 20 EFFECTS OF CONFINEMENT/CROWDING ON UREOGENESIS IN THE GULF TOADFISH OPSANUS BETA
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EFFECTS OF CONFINEMENT/CROWDING ON UREOGENESIS IN THE GULF TOADFISH OPSANUS BETA
... to ureogenesis and the possibility of a stress response fit well with our prior observation of two patterns of response of nitrogen excretion to air-exposure in toadfish (Walsh et ...trigger ... See full document
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Effects of feeding and confinement on nitrogen metabolism and excretion in the gulf toadfish Opsanus beta
... that confinement modifies how toadfish deal with this increased nitrogen ...Unconfined toadfish appear to process a meal rapidly, clearing the excess nitrogen load in 24 h or less (series I, ...fed ... See full document
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Interactions of cortisol and nitrogen metabolism in the ureogenic gulf toadfish Opsanus beta
... the gulf toadfish Opsanus beta is one of only a few teleosts which can facultatively utilize metabolically expensive pathways and excrete the majority of its waste nitrogen as urea (ureotely) ... See full document
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Effects of crowding on ornithine–urea cycle enzyme mRNA expression and activity in gulf toadfish (Opsanus beta)
... The gulf toadfish ( Opsanus beta ) is a facultatively ureotelic fish that excretes primarily urea under conditions of crowding or ...subjected toadfish to two-day and seven-day ... See full document
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Revisiting the effects of crowding and feeding in the gulf toadfish, Opsanus beta: the role of Rhesus glycoproteins in nitrogen metabolism and excretion
... (ureotelic) toadfish would be significantly lower than that in unconfined (ammoniotelic) ...that toadfish use Rh glycoproteins to excrete ammonia. Crowding and confinement stress significantly ... See full document
13
The regulatory role of glucocorticoid and mineralocorticoid receptors in pulsatile urea excretion of the gulf toadfish, Opsanus beta
... The gulf toadfish, Opsanus beta, is one of several unusual teleosts that have the capacity to synthesize urea de novo via the ornithine- urea cycle (O-UC) and excrete substantial quantities of ... See full document
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Induction of carbamoyl phosphate synthetase III and glutamine synthetase mRNA during confinement stress in gulf toadfish (Opsanus beta)
... in gulf toadfish appears to function primarily at times when normal pathways of ammonia excretion are blocked (Walsh et ...in gulf toadfish is not linked to osmoregulation (Walsh et ...by ... See full document
10
Differential branchial and renal handling of urea, acetamide and thiourea in the gulf toadfish Opsanus beta: evidence for two transporters
... The gulf toadfish Opsanus beta, among the best studied in this regard, is one of only a few adult teleosts with an active ornithine–urea cycle (for others, refer to Saha and Ratha, 1987; ... See full document
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Pulsatile urea excretion in the toadfish (Opsanus beta) is due to a pulsatile excretion mechanism, not a pulsatile production mechanism
... the gulf toadfish Opsanus beta is most ...the toadfish expresses a full complement of ornithine–urea cycle (OUC) enzymes in the liver (Read, 1971; Mommsen and Walsh, ...the ... See full document
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Dogmas and controversies in the handling of nitrogenous wastes: 5 HT2 like receptors are involved in triggering pulsatile urea excretion in the gulf toadfish, Opsanus beta
... the toadfish gill has been the focus of research for over a decade. The gulf toadfish, unusual in that it has a fully functional ornithine–urea cycle (for others, see Saha and Ratha, 1987, 1998; ... See full document
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Interactions between cortisol and Rhesus glycoprotein expression in ureogenic toadfish, Opsanus beta
... 1991), toadfish respond to crowding or confinement with a moderate surge in plasma cortisol levels that peaks at approximately 2h and returns to normal by 24h (Hopkins et ...of toadfish urea ... See full document
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A second glutamine synthetase gene with expression in the gills of the gulf toadfish (Opsanus beta)
... Western blots (Fig.·1) of SDS gels demonstrated that GSases in all tissues except muscle appear as a single subunit band with a molecular mass of approximately 49.4·kDa. This value differs slightly from the 42.3–42.4·kDa ... See full document
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Subcellular localization and biochemical properties of the enzymes of carbamoyl phosphate and urea synthesis in the batrachoidid fishes Opsanus beta, Opsanus tau and Porichthys notatus
... active ureogenesis in the marine teleost Opsanus beta (gulf toadfish), which correlates with the activities of CPSase III, glutamine synthetase and the other urea cycle enzymes in liver ... See full document
12
Physiological evidence for binaural directional computations in the brainstem of the oyster toadfish, Opsanus tau (L )
... directions. The direction of stimulation is transmitted via primary afferents in cranial nerve VIII to the descending octaval nucleus (DON) in the medulla (Edds-Walton and Fay, 1998; Edds-Walton and Fay, 2008). Both the ... See full document
11
Molecular and functional characterization of the Gulf toadfish serotonin transporter SLC6A4
... that toadfish blood does not contain appreciable levels of SERT transcript – as well as findings from other studies that neither fish thrombocytes (the evolutionary precursors to mammalian platelets) nor other ... See full document
11
Acoustical properties of the swimbladder in the oyster toadfish Opsanus tau
... A typical hammer strike and the induced swimbladder displacement and sound waveforms are represented in Fig.2 for a 432g male toadfish. The hammer waveform was an asymmetrical half-cycle with a shorter rise than ... See full document
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Directional sound sensitivity in utricular afferents in the toadfish Opsanus tau
... male toadfish remain relatively stationary during advertisement calling, female fish swim to find suitable ...Spontaneous toadfish movements in outdoor ponds and large tanks suggest that typical ... See full document
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Sensitivity of the anterior lateral line to natural stimuli in the oyster toadfish, Opsanus tau (Linnaeus)
... one toadfish (8·cm SL; 10·cm TL) feeding on small guppies (2·cm SL) during daylight trials did not launch strikes at prey that were greater than 5·cm from the toadfish ...juvenile toadfish indicate ... See full document
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Pulsatile urea excretion in the ureagenic toadfish Opsanus beta: an analysis of rates and routes
... The classic ‘divided chamber’ system of Smith (1929) was employed to separate anterior (i.e. gills and head region) and posterior (i.e. body) routes of urea and ammonia excretion. A hole was cut in a latex membrane ... See full document
13
Vocal production complexity correlates with neural instructions in the oyster toadfish (Opsanus tau)
... The toadfish swimbladder produces sound only when driven by muscle contraction. Each contraction causes bladder displacement (Fine et al., 2001; Skoglund, 1961), radiating a pressure sound waveform that is ... See full document
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