An endocrine disrupting chemical changes courtship and parental care in the sand goby.
作者： Minna Saaristo , John A. Craft , Kari K. Lehtonen , Kai Lindström
DOI: 10.1016/J.AQUATOX.2009.12.015
关键词:
摘要: Endocrine disrupting chemicals (EDCs) are a diverse group of compounds that can mimic, block or modulate the synthesis natural hormones. They known to cause impairment reproduction aquatic organisms at very low concentrations. The aim this study was examine how exposure from 10 31 days 17α-ethinyl estradiol (EE2, 41 ng L−1) affects courtship and parental care behaviour male sand gobies (Pomatoschistus minutus). goby exhibits polygynous mating system, where males compete for females provide paternal care. First, performance towards stimulus female recorded with video camera. Secondly, after had received eggs his recorded. In addition behavioural endpoints, we measured expression hepatic vitellogenin (Vtg) zona radiata protein (Zrp) mRNA, as well common somatic indices. Our shows EE2 affected fanning during both Interestingly, small exposed increased their similar levels larger control males. However, egg not related size, all fanned more than EE2-exposure induced Vtg Zrp mRNA in decreased hepatosomatic index (HSI), gonadosomatic (GSI). Females prefer fan more, which will favour EDC This may lead favours strong enough tend until they hatch, thus decreasing reproductive success individuals.
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