IMPAIRMENTS ON AROMATASE EXPRESSION, REPRODUCTIVE BEHAVIOR AND SPERM QUALITY OF MALE FISH EXPOSED TO 17â-ESTRADIOL

GUYON, NOELIA; ROGGIO, ANGELINA; AMÉ, MARÍA VALERIA; HUED, ANDREA; VALDES, MARIA EUGENIA; GIOJALAS, LAURA; WUNDERLIN, DANIEL ALBERTO; BISTONI, MA

SETAC PRESS

Lugar: Malden; Año: 2012 vol. 31 p. 935 - 935

p style="LINE-HEIGHT: 200%; MARGIN: 0cm 0cm 0pt; tab-stops: 0cm; mso-layout-grid-align: none" class="MsoNormal">There is growing evidence that environmental estrogen can reach high enough levels to exert adverse reproductive effects on wild fish populations. We report different parameters of male reproductive behavior, brain and gonadal aromatase expression, and sperm quality in an internally fertilizing fish species (Jenynsia multidentata, Jenyns) exposed to environmentally relevant concentrations of 17â-estradiol (E2). Adult males were exposed to 0, 50, 100 and 250 ng/L E2 during 28 d. Our findings demonstrated that E2 exposure resulted in a very clear increase in brain aromatase transcript abundance at all assayed concentrations when compared to control, howev