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Primary sex reversal in female Betta...

Smith, Tracy S.

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Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate./
Author:	Smith, Tracy S.
Description:	64 p.
Notes:	Source: Masters Abstracts International, Volume: 43-05, page: 1644.
Contained By:	Masters Abstracts International43-05.
Subject:	Agriculture, Fisheries and Aquaculture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1425693
ISBN:	9780496998227

Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate.
Smith, Tracy S.

Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate. - 64 p.

Source: Masters Abstracts International, Volume: 43-05, page: 1644.

Thesis (M.S.)--East Tennessee State University, 2005.

Sex reversal in fish can occur as a result of disturbances in natural conditions or laboratory manipulations. Trenbolone Acetate (TBA), a synthetic anabolic-androgenic steroid used mainly in the cattle industry, was applied to female Betta splendens, a sexually dimorphic fish. Previously, females were analyzed for secondary sex characteristics after treatment with TBA, increased temperature, or a combination of both. This study focused on primary sex characteristics by histological examination. Gonads were surgically removed and prepared following basic histological techniques. Following H&E staining, sections were observed for signs of ovarian regression, as well as signs of testicular formation. The presence of TBA significantly reduced the size of the gonad and the number and size of vitellogenic oocytes, indicating a loss of ovarian function. Temperature had a synergistic effect on TBA, as more oocytes were atretic and interstitial tissue was more abundant, some with clear spermatocysts. Temperature alone had no significant effect.

ISBN: 9780496998227Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate.
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100 1 $a Smith, Tracy S. $3 1913073
245 1 0 $a Primary sex reversal in female Betta splendens following treatments with temperature and trenbolone acetate.
300 $a 64 p.
500 $a Source: Masters Abstracts International, Volume: 43-05, page: 1644.
500 $a Chair: J. Leonard Roberston.
502 $a Thesis (M.S.)--East Tennessee State University, 2005.
520 $a Sex reversal in fish can occur as a result of disturbances in natural conditions or laboratory manipulations. Trenbolone Acetate (TBA), a synthetic anabolic-androgenic steroid used mainly in the cattle industry, was applied to female Betta splendens, a sexually dimorphic fish. Previously, females were analyzed for secondary sex characteristics after treatment with TBA, increased temperature, or a combination of both. This study focused on primary sex characteristics by histological examination. Gonads were surgically removed and prepared following basic histological techniques. Following H&E staining, sections were observed for signs of ovarian regression, as well as signs of testicular formation. The presence of TBA significantly reduced the size of the gonad and the number and size of vitellogenic oocytes, indicating a loss of ovarian function. Temperature had a synergistic effect on TBA, as more oocytes were atretic and interstitial tissue was more abundant, some with clear spermatocysts. Temperature alone had no significant effect.
590 $a School code: 0069.
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0792
710 2 0 $a East Tennessee State University. $3 1017802
773 0 $t Masters Abstracts International $g 43-05.
790 1 0 $a Roberston, J. Leonard, $e advisor
790 $a 0069
791 $a M.S.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1425693