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In Vitro Biosynthesis of Androgens in the Australian Lungfish, Neoceratodus forsteri


Joss, JMP and Edwards, A and Kime, DE, In Vitro Biosynthesis of Androgens in the Australian Lungfish, Neoceratodus forsteri, General and Compartive Endocrinology, 101, (3) pp. 256-263. ISSN 0016-6480 (1996) [Refereed Article]

DOI: doi:10.1006/gcen.1996.0028


The serum concentration of testosterone was estimated from a population of wild lungfish over 6-7 years of sampling. Male lungfish were found to have high circulating levels of testosterone (~50 ng/ml) which varied seasonally and could be correlated with spermatogenesis as judged by testis histology. Incubation of testis tissue slices with [ 3H]progesterone, [ 3H]17- hydroxyprogesterone, or [ 3H]testosterone confirmed that testosterone is the major androgen in Neoceratodus. Not even trace amounts of 11-keto- or 11β- hydroxytestosterone or 5α-dihydrotestosterone could be identified by TLC separations. There was little or no conjugation of steroids by the testes, except during the spawning season, when glucuronides of androstenedione and testosterone were produced.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Zoology not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Edwards, A (Dr Ashley Edwards)
ID Code:39512
Year Published:1996
Web of Science® Times Cited:11
Deposited By:Zoology
Deposited On:2006-06-30
Last Modified:2011-08-22

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