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High Prevalence of Proposed Müllerian Duct RemnantCysts on the Spermatic Duct in Wild Eurasian Otters (Lutra lutra) from Sweden
Swedish Museum of Natural History, Department of.
Statens Veterinärmedicinska Anstalt.
2013 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 8, no 12, 1-5 p.Article in journal (Refereed) Published
Abstract [en]

The spermatic ducts (vasa deferentia) of 235 otters (Lutra lutra) found dead between 1999 and 2012 in Sweden were examined for presence of paraductular cysts. Single or multiple elongated uni- or bilateral cysts parallel to the spermatic duct were noted in 72% of the examined males. The cysts were adjacent to, but did not communicate with the lumen of the spermatic duct, and were usually located within a few centimeters of the testis and epididymis. The cysts are proposed to be congenital Müllerian duct remnants. Other morphologic abnormalities in the reproductive organs were not noted within this study. Possible causes of the incomplete regression of the embryonic female gonadal duct are exposure to environmental contaminants such as elevated concentrations of estrogen-like compounds (endocrine disrupting chemicals), inbreeding, or a naturally occurring anatomic defect. No obvious geographical pattern was observed for otters with or without cysts. This is the first study and description of cysts on the spermatic duct in otters.

Place, publisher, year, edition, pages
2013. Vol. 8, no 12, 1-5 p.
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Medical and Health Sciences
Research subject
Man and the environment
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URN: urn:nbn:se:nrm:diva-1260DOI: 10.1371/journal.pone.0084660OAI: oai:DiVA.org:nrm-1260DiVA: diva2:844437
Available from: 2015-08-01 Created: 2015-08-06 Last updated: 2017-12-04

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Roos, Anna

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