The binding characteristics of sex steroid binding protein (SBP) were investigated in vitellogenic and nonreproductive female rainbow trout (Oncorhynchus mykiss), black bream (Acanthopagrus butcheri), and greenback flounder (Rhombosolea tapirina). The binding capacity of rainbow trout and black bream SBP was significantly greater in vitellogenic than in nonreproductive-stage fish. A decrease in binding affinity was observed in male trout injected with estradiol (E2) compared to control fish. This difference was not observed after partial purification of the SBP by gel filtration and may have resulted from competitive inhibition of E2 binding by vitellogenin. No differences in flounder SBP binding characteristics were observed. © 2000 Academic Press.

Item Type:	Refereed Article
Research Division:	Agricultural, Veterinary and Food Sciences
Research Group:	Fisheries sciences
Research Field:	Aquaculture
Objective Division:	Animal Production and Animal Primary Products
Objective Group:	Fisheries - aquaculture
Objective Field:	Fisheries - aquaculture not elsewhere classified
UTAS Author:	Hobby, AC (Mrs Andrea Cherie Hobby)
UTAS Author:	Geraghty, DP (Professor Dominic Geraghty)
UTAS Author:	Pankhurst, NW (Professor Ned Pankhurst)
ID Code:	18979
Year Published:	2000
Web of Science® Times Cited:	20
Deposited By:	TAFI - Aquaculture
Deposited On:	2000-08-01
Last Modified:	2011-10-06
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