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Porsch Hällström, IngerORCID iD
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Publications (10 of 21) Show all publications
Open this publication in new window or tab >>Altered non-reproductive behavior and feminization caused by developmental exposure to 17α-ethinylestradiol persist to adulthood in three-spined stickleback (Gasterosteus aculeatus)
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2019 (English)In: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 207, p. 142-152Article in journal (Refereed) Published
Abstract [en]

The synthetic estrogen 17α-ethinylestradiol (EE2), ubiquitous in the aquatic environment and commonly detected in sewage effluents, interferes with the endocrine system in multiple ways. Exposure during sensitive windows of development causes persistent effects on fertility, reproductive and non-reproductive behavior in mammals and fish. In the present study, three-spined stickleback (Gasterosteus aculeatus) were exposed to nominal 0 and 20 ng/L EE2 from fertilization to 7 weeks post-hatch. After 8 months of remediation in clean water three non-reproductive behaviors, not previously analyzed in developmentally EE2-exposed progeny of wild-caught fish, were evaluated. Chemical analysis revealed that the nominal 0 and 20 ng/L exposure contained 5 and 30 ng/L EE2, respectively. Therefore, the use of control fish from previous experiments was necessary for comparisons. Fish exposed during development showed significant concentration-dependent reduction in anxiety-like behavior in the scototaxis (light/dark preference) test by means of shorter latency to first entrance to the white compartment, more visits in white, and longer total time in white compared to unexposed fish. In the novel tank test, developmental exposure significantly increased the number of transitions to the upper half of the aquaria. Exposure to EE2 during development did not alter shoal cohesion in the shoaling test compared with unexposed fish but fish exposed to 30 ng/L EE2 had significantly longer latency to leave the shoal and fewer transitions away from the shoal compared to fish exposed to 5 ng/L EE2. Skewed sex ratio with more females, sex reversal in genetic males as well as intersex in males was observed after exposure to 30, but not 5 ng/L EE2. In conclusion, EE2 exposure during development in three-spined stickleback resulted in persistent effects on anxiety-like behaviors. These long-term effects from developmental exposure are likely to be of higher relevance for natural populations than are short-term effects from adult exposure.

Place, publisher, year, edition, pages
Elsevier, 2019
Endocrine disruption, 17α-ethinylestradiol, fish, estrogens, developmental exposure, behavior, intersex
National Category
Environmental Sciences
Research subject
Environmental Studies; Baltic and East European studies
urn:nbn:se:sh:diva-34932 (URN)10.1016/j.aquatox.2018.11.024 (DOI)000457659300016 ()30572174 (PubMedID)2-s2.0-85058462347 (Scopus ID)1556/42/2011 (Local ID)1556/42/2011 (Archive number)1556/42/2011 (OAI)
The Foundation for Baltic and East European Studies, 1556/42/2011

As manuscript in dissertation.

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2020-03-24Bibliographically approved