Reversibility of estrogenic sex changes in zebrafish ( Danio Rerio ) | Zendy

Larsen Mia G. | Zendy; Bilberg Katrine | Zendy; Baatrup Erik | Zendy

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Reversibility of estrogenic sex changes in zebrafish ( Danio Rerio )

Author(s) -

Larsen Mia G.,

Bilberg Katrine,

Baatrup Erik

Publication year - 2009

Publication title -

environmental toxicology and chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.1

H-Index - 171

eISSN - 1552-8618

pISSN - 0730-7268

DOI - 10.1897/08-563.1

Subject(s) - zebrafish , danio , biology , courtship , sexual differentiation , human fertilization , courtship display , sex ratio , sexual maturity , physiology , phenotype , endocrinology , medicine , andrology , zoology , anatomy , genetics , population , gene , environmental health

Development of male zebrafish (Danio rerio) courtship behavior was studied following estrogenic disruption of sexual differentiation. Sixty zebrafish were exposed at 28C to 5 ng/L (nominal concentration) of 17α‐ethinylestradiol (EE 2 ) from the egg stage until adulthood at four months of age, resulting in a female‐biased sex ratio. Twenty‐five EE 2 ‐exposed phenotypic female zebrafish were subsequently held in clean water for eight months. During this period, eight phenotypic males developed. These phenotypic males demonstrated significant behavioral aberrations and a low fertilization rate compared to control males.

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