Maternally derived Cu tolerance in larval fathead minnows: how long does it persist?

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Fathead minnow Pimephales promelas larvae were produced by either copper (Cu)-exposed or na├»ve females and then subjected to a 96 h survival test using Cu concentrations of 400 and 800 g l−1. Three survival challenges were conducted: the first survival test featured 0 day-old larvae while the second and third featured 8 and 15 day-old larvae, respectively. The results of this study show that maternally derived Cu tolerance was relatively short-lived as it persisted for <8 days.

Keywords: copper tolerance; fathead minnows; maternal transfer

Document Type: Research Article


Affiliations: Department of Biology, University of Nebraska at Omaha, 6001 Dodge Street, Omaha, NE 68182-0040, U.S.A.

Publication date: November 1, 2006

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