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Comparison of Vitellogenin Induction, Sex Ratio, and Gonad Morphology Between Zebrafish and Japanese Medaka After Exposure to 17α-Ethinylestradiol and 17β-Trenbolone
- Source :
- Archives of Environmental Contamination and Toxicology. 51:237-243
- Publication Year :
- 2006
- Publisher :
- Springer Science and Business Media LLC, 2006.
-
Abstract
- The pharmaceutical estrogen 17alpha-ethinylestradiol (EE2) and the anabolic androgen 17beta-trenbolone (Tb) can interfere with the endocrine and reproductive systems of fish. The potency of these chemicals in zebrafish (Danio rerio) and Japanese medaka (Oryzias latipes) was assessed using the core end points vitellogenin (Vtg) concentration at 38 days post-hatch and sex ratio and gonad morphology at 60 days post-hatch. Vtg concentrations were measured in fish whole-body homogenate samples using enzyme-linked immunosorbent assay. Increased Vtg concentration and feminization of fish after exposure to 10 ng/L EE2, as well as masculinization after exposure to 50 ng/L of Tb, were observed in zebrafish. Intersex was observed in medaka exposed to EE2. A decrease in Vtg production after Tb exposure (50 ng/L) was measured in both zebrafish and medaka. Analyses of gonad morphology revealed increased testicular area and sperm percentage in Tb-exposed zebrafish, whereas increased sperm percentage was measured in Tb-exposed medaka. The higher sensitivity of zebrafish compared with medaka to both EE2 and Tb was revealed in the study.
- Subjects :
- Male
endocrine system
medicine.medical_specialty
animal structures
Gonad
Health, Toxicology and Mutagenesis
Oryzias
Ethinyl Estradiol
Toxicology
Vitellogenins
Vitellogenin
Trenbolone
Internal medicine
Ethinylestradiol
Testis
medicine
Animals
Sex Ratio
Zebrafish
biology
fungi
General Medicine
Japanese Medaka
biology.organism_classification
Spermatozoa
Pollution
Sperm
Endocrinology
medicine.anatomical_structure
embryonic structures
Oocytes
biology.protein
Female
Trenbolone Acetate
medicine.drug
Subjects
Details
- ISSN :
- 14320703 and 00904341
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Archives of Environmental Contamination and Toxicology
- Accession number :
- edsair.doi.dedup.....c5f6d6e072f0e579a6124bc6cad180ef