Do Gulf Toadfish Use Pulsatile Urea Excretion to Chemically Communicate Reproductive Status?

2019 ◽  
Vol 92 (2) ◽  
pp. 125-139 ◽  
Author(s):  
Maria C. Cartolano ◽  
Phallon Tullis-Joyce ◽  
Kathleen Kubicki ◽  
M. Danielle McDonald
Keyword(s):  
Reproductive Status ◽  
Urea Excretion ◽  
Gulf Toadfish

scholarly journals A waterborne chemical cue from Gulf toadfish, Opsanus beta, prompts pulsatile urea excretion in conspecifics

2017 ◽  
Vol 171 ◽  
pp. 92-99 ◽  
Author(s):  
Jeremy Fulton ◽  
Christophe M.R. LeMoine ◽  
Carol Bucking ◽  
Kevin V. Brix ◽  
Patrick J. Walsh ◽  
...  
Keyword(s):  
Chemical Cue ◽  
Opsanus Beta ◽  
Urea Excretion ◽  
Gulf Toadfish

Molecular characterization of a urea transporter in the gill of the gulf toadfish (Opsanus beta)

2000 ◽  
Vol 203 (15) ◽  
pp. 2357-2364 ◽  
Author(s):  
P.J. Walsh ◽  
M.J. Heitz ◽  
C.E. Campbell ◽  
G.J. Cooper ◽  
M. Medina ◽  
...  
Keyword(s):  
Morphological Data ◽  
Northern Analysis ◽  
Xenopus Laevis Oocytes ◽  
Urea Transporter ◽  
Reading Frame ◽  
Opsanus Beta ◽  
Urea Excretion ◽  
Pulse Cycle ◽  
A Minor ◽  
Gulf Toadfish

Urea excretion by the gulf toadfish (Opsanus beta) has been shown in previous studies to be a highly pulsatile facilitated transport, with excretion probably occurring at the gill. The present study reports the isolation of an 1800 base pair (kb) cDNA from toadfish gill with one open reading frame putatively encoding a 475-residue protein, the toadfish urea transporter (tUT). tUT, the first teleostean urea transporter cloned, has high homology with UTs (facilitated urea transporters) cloned from mammals, an amphibian and a shark, and most closely resembles the UT-A subfamily. When expressed in Xenopus laevis oocytes, tUT increased urea permeability (as measured by [(14)C]urea uptake) five- to sevenfold, and this permeability increase was abolished by phloretin, a common inhibitor of other UTs. Northern analysis using the 1.8 kb clone was performed to determine the tissue distribution and dynamics of tUT mRNA expression. Of six tissues examined (gill, liver, red blood cells, kidney, skin and intestine), only gill showed expression of tUT mRNA, with a predominant band at 1.8 kb and a minor band at 3.5 kb. During several points in the urea pulse cycle of toadfish (0, 4, 6, 12 and 18 h post-pulse), measured by excretion of [(14)C]urea into the water, gill mRNA samples were obtained. Expression of tUT mRNA was found to be largely invariant relative to expression of beta-actin mRNA over the pulse cycle. These results further confirm the gill localization of urea transport in the toadfish and suggest that tUT regulation (and the regulation of pulsatile urea excretion) is probably not at the level of mRNA control. The results are discussed in the context of the mechanisms of vasopressin-regulated UT-A in mammalian kidney and morphological data for the toadfish gill.

Does Pulsatile Urea Excretion Serve as a Social Signal in the Gulf Toadfish Opsanus beta?

2005 ◽  
Vol 78 (5) ◽  
pp. 724-735 ◽  
Author(s):  
Katherine A. Sloman ◽  
M. Danielle McDonald ◽  
John F. Barimo ◽  
Olivier Lepage ◽  
Svante Winberg ◽  
...  
Keyword(s):  
Opsanus Beta ◽  
Urea Excretion ◽  
Social Signal ◽  
Gulf Toadfish

Evidence that Gulf toadfish use pulsatile urea excretion to communicate social status

2020 ◽  
Vol 227 ◽  
pp. 113182
Author(s):  
Maria C. Cartolano ◽  
Elizabeth A. Babcock ◽  
M. Danielle McDonald
Keyword(s):  
Social Status ◽  
Urea Excretion ◽  
Gulf Toadfish

Extrinsic nerves are not involved in branchial 5-HT dynamics or pulsatile urea excretion in Gulf toadfish, Opsanus beta

2017 ◽  
Vol 214 ◽  
pp. 58-65 ◽  
Author(s):  
Maria C. Cartolano ◽  
Molly H.B. Amador ◽  
Velislava Tzaneva ◽  
William K. Milsom ◽  
M. Danielle McDonald
Keyword(s):  
Opsanus Beta ◽  
Urea Excretion ◽  
Extrinsic Nerves ◽  
Gulf Toadfish

Pulsatile urea excretion in the gulf toadfish: mechanisms and controls

2003 ◽  
Vol 136 (4) ◽  
pp. 667-684 ◽  
Author(s):  
Chris M. Wood ◽  
M. Danielle McDonald ◽  
Lena Sundin ◽  
Pierre Laurent ◽  
Patrick J. Walsh
Keyword(s):  
Urea Excretion ◽  
Gulf Toadfish

Do circulating plasma AVT and/or cortisol levels control pulsatile urea excretion in the gulf toadfish (Opsanus beta)?

2001 ◽  
Vol 129 (4) ◽  
pp. 859-872 ◽  
Author(s):  
Chris M. Wood ◽  
Justin M. Warne ◽  
Yuxiang Wang ◽  
M.Danielle McDonald ◽  
Richard J. Balment ◽  
...  
Keyword(s):  
Opsanus Beta ◽  
Urea Excretion ◽  
Cortisol Levels ◽  
Gulf Toadfish
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