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<meta content="Joss, Jean M.P." name="eprints.creators_name" />
<meta content="Edwards, Ashley" name="eprints.creators_name" />
<meta content="Kime, David E." name="eprints.creators_name" />
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<meta content="Ashley.Edwards@utas.edu.au" name="eprints.creators_id" />
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<meta content="In vitro biosynthesis of androgens in the Australian lungfish, Neoceratodus forsteri " name="eprints.title" />
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<meta content="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 inNeoceratodus.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. " name="eprints.abstract" />
<meta content="1996-04" name="eprints.date" />
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<meta content="General and Comparative Endocrinology" name="eprints.publication" />
<meta content="101" name="eprints.volume" />
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<meta content="235-343" name="eprints.pagerange" />
<meta content="10.1006/gcen.1996.0028" name="eprints.id_number" />
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<meta content=" Burggren, W.W., Johansen, K.
Circulation and respiration in lungfishes (Dipnoi)
(1986) The Biology and Evolution of Lungfishes, pp. 217-236.
W. E. Bemis, W. W. Burggren, and N. E. Kemp, Eds., A. R. Liss, New York.
uevas, M.E., Miller, W., Callard, G.
Sulfoconjugation of steroids and the vascular pathway of communication in dogfish testis.
(1992) Journal of Experimental Zoology, 264 (2), pp. 119-129. Cited 11 times.
Forey, P.L.
Relationships of lungfishes
(1986) The Biology and Evolution of Lungfishes, pp. 75-92. Cited 4 times.
W. E. Bemis, W. W. Burggren, and N. E. Kemp, Eds. A. R. Liss, New York
Kemp, A.
Spawning of the australian lungfish, Neoceratodus forsteri (Kreft) in the Brisbane River and in Enoggera Reservoir, Queensland
(1984) Mem. Oueensl. Mus., 21, pp. 391-399.
Kime, D.E.
The steroids
(1987) Fundamentals of Comparative Vertebrate Endocrinology, pp. 3-56.
(I. Chester-Jones, P. M. Ingleton, and J. G. Phillips, Eds.), Plenum, New York/London
Kime, D.E.
In vitro metabolism of progesterone, 17-hydroxyprogesterone, and 17,20β-dihydroxy-4-pregnen-3-one by ovaries of the common carp Cyprinus carpio: Production rates of polar metabolites
(1990) General and Comparative Endocrinology, 79 (3), pp. 406-414.
Kime, D.E.
"Classical" and "non-classical" reproductive steroids in fish
(1993) Rev. Fish Biol. Fish., 3, pp. 160-180.
Kime, D.E., Hews, E.A.
Androgen biosynthesis in vitro by testes from amphibia
(1978) General and Comparative Endocrinology, 35 (3), pp. 280-288.
Kime, D.E., Hews, E.A.
In vitro biosynthesis of 11β-hydroxy- and 11-oxotestosterone by testes of the pike (Esox lucius) and the perch (Perca fluviatilis)
(1978) General and Comparative Endocrinology, 36 (4), pp. 604-608.
Leitz, T., Reinboth, R.
The biosynthesis of 11-ketotestosterone by the testis of the Siamese fighting fish Betta splendens Regan (Anabantoidei, Belontiidae).
(1987) General and Comparative Endocrinology, 66 (1), pp. 145-157.
Lofts, B.
Testicular function
(1987) Hormones and Reproduction in Fishes, Amphibians, and Reptiles, pp. 283-326.
D. O. Norris and R. E. Jones, Eds., Plenum, New York/London
Meyer, A.
Molecular evidence on the origin of tetrapods and the relationships of the coelacanth
(1995) Trends in Ecology and Evolution, 10 (3), pp. 111-116.
doi: 10.1016/S0169-5347(00)89004-7
Muller, C.H.
Plasma 5α-dihydrotestosterone and testosterone in the bullfrog, Rana catesbeiana: stimulation by bullfrog LH
(1977) General and Comparative Endocrinology, 33 (1), pp. 122-132.
Norris, D.O.
(1985) Vertebrate Endocrinology.
Lea and Febiger, Philadelphia
Sandor, T., Idler, D.R.
Steroid methodology
(1972) Steroids in Nonmammalian Vertebrates, pp. 6-36.
D. R. Idler, Ed., Academic Press, New York/London
Schoonen, W.G.E.J., Lambert, J.G.D.
Steroid metabolism in the testes of the African catfish, Clarias gariepinus (Burchell), during spawning season, under natural conditions and kept in ponds
(1986) General and Comparative Endocrinology, 61 (1), pp. 40-52.
cott, A.P., Vermierssen, E.L.M.
Production of conjugated steroids by teleost gonads and their role as pheromones
(1994) Perspectives in Comparative Endocrinology, pp. 645-654.
K. D. Davey, R. E. Peter, and S. S. Tobe, Eds., National Research Council of Canada, Ottawa
herwood, N.M., Kyle, A.L., Kreiberg, H., Warby, C.M., Magnus, T.H., Carolsfield, J., Price, W.S.
Partial characterisation of a spawning pheromone in the herring Clupea harengus pallasi
(1991) Can. J. Zool., 69, pp. 91-103.
Sourdaine, P., Garnier, D.H., Jegou, B.
The adult dogfish (Scyliorhinus canicula L.) testis: A model to study stage-dependent changes in steroid levels during spermatogenesis
(1990) Journal of Endocrinology, 127 (3), pp. 451-460.
Stacey, N.E., Sorensen, P.W.
17alpha, 20beta-dihydroxy-4-pregnen-3-one: A steroidal primer pheromone increasing milt volume in the goldfish, Carassius auratus
(1986) Can. J. Zool., 64, pp. 2412-2417.
Wake, M.H.
Urogenital morphology of dipnoans, with comparisons to other fishes and to amphibians
(1987) J. Morphol. Suppl., 1, pp. 199-216.
Wilson, J.D.
Metabolism of testicular androgens
(1975) "Handbook of Physiology," Sect. 7, "Endocrinology," Vol. V, "Male Reproductive System", 5, pp. 491-508.
R. O. Greep and E. B. Astwood, Eds., Am. Physiol. Soc., Washington, DC
okobori, S.-I., Hasegawa, M., Ueda, T., Okada, N., Nishikawa, K., Watanabe, K.
Relationship among coelacanths, lungfishes, and tetrapods: A phylogenetic analysis based on mitochondrial cytochrome oxidase I gene sequences
(1994) Journal of Molecular Evolution, 38 (6), pp. 602-609.
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<meta content="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 inNeoceratodus.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. " name="DC.description" />
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<h1 class="ep_tm_pagetitle">In vitro biosynthesis of androgens in the Australian lungfish, Neoceratodus forsteri</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Joss, Jean M.P.</span> and <span class="person_name">Edwards, Ashley</span> and <span class="person_name">Kime, David E.</span> (1996) <xhtml:em>In vitro biosynthesis of androgens in the Australian lungfish, Neoceratodus forsteri.</xhtml:em> General and Comparative Endocrinology, 101 (3). pp. 235-343. ISSN 0016-6480</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/620/1/Joss_et_al_1996.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/620/1/Joss_et_al_1996.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />1880Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="631" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1006/gcen.1996.0028">http://dx.doi.org/10.1006/gcen.1996.0028</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">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 inNeoceratodus.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. </p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270604.html">270000 Biological Sciences > 270600 Physiology > 270604 Comparative Physiology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270603.html">270000 Biological Sciences > 270600 Physiology > 270603 Animal Physiology - Systems</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270599.html">270000 Biological Sciences > 270500 Zoology > 270599 Zoology not elsewhere classified</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270501.html">270000 Biological Sciences > 270500 Zoology > 270501 Animal Systematics, Taxonomy and Phylogeny</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">620</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Ashley Edwards</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">18 Jan 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 14:26</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=620;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=620">item control page</a></p>
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