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Sex differentiation and sex change in the protandrous black porgy, Acanthopagrus schlegeli.

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Title Sex differentiation and sex change in the protandrous black porgy, Acanthopagrus schlegeli.
Not Available
 
Creator Sherly Tomy
Wu. C.G
Lee. Y.H
Yueh. W.S
Lin. C.J
Lau. E.I
Chang. C.F
 
Subject Gene expression
Gonadal histology
Sex differentiation
Sex change
Sex steroids Fish
 
Description Not Available
Protandrous black porgy fish, Acanthopagrus schlegeli, have a striking life cycle with a male sex differenti ation at the juvenile stage and male-to-female sex change at 3 years of age. We had characterized the sex
differentiation and sex change in this species by the integrative approaches of histology, endocrine and
molecular genetics. The fish differentiated in gonad at the age around 4-months and the gonad further
developed with a bisexual gonad for almost for 3 years and sex change at 3 year of age. An antagonistic
relationship in the testicular and ovarian tissues was found during the development of the gonadal tissue.
Male- (such as sf-1, dmrt1, dax-1 and amh) and female- (such as wnt4, foxl2 and cyp19a1a) promoting genes
were associated with testicular and ovarian development, respectively. During gonadal sex differentiation,
steroidogenic pathway and estrogen signaling were also highly expressed in the brain. The increased
expression of sf-1 and wnt4, cyp19a1a in ovarian tissue and decreased expression of dax-1 in the ovarian
tissue may play important roles in sex change from a male-to-female. Endocrine factors such as estradiol
and luteinizing hormone may also involve in the natural sex change. Estradiol induced the expression of
female-promoting genes and resulted in the precocious sex change in black porgy. Our series of studies
shed light on the sex differentiation and sex change in protandrous black porgy and other animals
Not Available
 
Date 2023-08-02T06:35:57Z
2023-08-02T06:35:57Z
2009-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80393
 
Language English
 
Relation Not Available;
 
Publisher Not Available