Acute Exposure to 17Α-Ethinylestradiol Alters Aggressive Behavior of Mosquitofish (Gambusia affinis) Toward Japanese Medaka (Oryzias latipes)

Hieu M. Dang, Yoshihiko Inagaki, Yuta Yamauchi, Takaaki Kurihara, Cong H. Vo, Yutaka Sakakibara*

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Behavior of the mosquitofish (Gambusia affinis) toward the Japanese medaka (Oryzias latipes) was tested under exposure to environmental 17α-ethinylestradiol (EE2), a synthetic derivative of natural estrogen, estradiol. The mosquitofish were exposed to EE2 at different concentrations—0, 0.5, 5.0, and 50.0 ng/L—for 2 days, before their behavioral changes toward the medaka were observed. Results indicate that female mosquitofish became more aggressive at the high level of EE2 (50 ng/L), in terms of how persistently they attempted to approach the medaka. The males showed increased aggressive behavior toward the medaka, by significantly increasing the number and persistence of approach attempts at the low (0.5 and 5 ng/L) levels of EE2. At the highest EE2 concentration (50 ng/L), however, the number of attempts decreased, while the persistence increased in the males showing the same pattern as in the females. All behavioral changes were reversed once EE2 was removed from the environment.

本文言語English
ページ(範囲)643-648
ページ数6
ジャーナルBulletin of Environmental Contamination and Toxicology
98
5
DOI
出版ステータスPublished - 2017 5

ASJC Scopus subject areas

  • 毒物学
  • 汚染
  • 健康、毒物学および変異誘発

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