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Evidence of Impaired Reproduction by Western Mosquitofish Inhabiting Seleniferous Agricultural Drainwater

1995; Wiley; Volume: 124; Issue: 4 Linguagem: Inglês

10.1577/1548-8659(1995)124 2.3.co;2

1548-8659

Michael K. Saiki, R. Scott Ogle,

Aquatic Invertebrate Ecology and Behavior

Transactions of the American Fisheries SocietyVolume 124, Issue 4 p. 578-587 Article Evidence of Impaired Reproduction by Western Mosquitofish Inhabiting Seleniferous Agricultural Drainwater Michael K. Saiki, Michael K. Saiki National Biological Service, Midwest Science Center, Field Research Station-Dixon, 6924 Tremont Road, Dixon, California, 95620 USASearch for more papers by this authorR. Scott Ogle, R. Scott Ogle National Biological Service, Midwest Science Center, Field Research Station-Dixon, 6924 Tremont Road, Dixon, California, 95620 USASearch for more papers by this author Michael K. Saiki, Michael K. Saiki National Biological Service, Midwest Science Center, Field Research Station-Dixon, 6924 Tremont Road, Dixon, California, 95620 USASearch for more papers by this authorR. Scott Ogle, R. Scott Ogle National Biological Service, Midwest Science Center, Field Research Station-Dixon, 6924 Tremont Road, Dixon, California, 95620 USASearch for more papers by this author First published: July 1995 https://doi.org/10.1577/1548-8659(1995)124 2.3.CO;2Citations: 20AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Western mosquitofish Gambusia affinis from the San Luis Drain (SLD), a major conveyance system for seleniferous agricultural subsurface (tile) drainage water in the San Joaquin Valley, California, experienced lower reproductive success than did mosquitofish from a nearby reference area (Pond 26 at the Volta Wildlife Area, VOLTA) that had no history of receiving tile drainage. At birth, mean survival of SLD fry was 70% in 1984 and 77% in 1985, whereas mean survival of VOLTA fry was greater than 99% in 1984 and 97% in 1985. Measurements of total length (TL) of offspring born to SLD females in 1985 showed that stillborn fry (mean TL, 7.5 mm) were significantly shorter than live fry (mean TL, 9.4 mm). In addition, most stillborn fry were at earlier stages of development (contained prominent yolk sacs or occasionally resembled eyed embryos) than most live fry (yolk sacs were fully resorbed). In comparison, stillborn and live fry born to VOLTA females did not differ significantly in TL (mean for stillborn fry, 7.1 mm; mean for live fry, 7.5 mm), and nearly all fry had resorbed their yolk sacs. Mosquitofish from the SLD contained over 100 μg/g (whole-body concentration in dry weight) of selenium, whereas those from VOLTA averaged 1.5 μg/g. Although experiments are still needed to establish cause and effect, the high incidence of abnormal births of mosquitofish from the SLD is seemingly a response to selenium toxicity. Citing Literature Volume124, Issue4July 1995Pages 578-587 RelatedInformation