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- W1980622405 abstract "This is the first demonstration that sediment contaminants can influence the reproduction of amphipods. Groups of Paracorophium excavatum from a slightly contaminated estuarine site were held within laboratory mesocosms containing four copper-spiked estuarine sediments (Cu 14–46 μg g−1 dry weight) and a control sediment (Cu 5 μg g−1 dry weight) at 15 °C for 28 days. Copper sediment concentration did not affect the amphipod sex ratio. Female maturation was inhibited within copper-spiked sediments but female length was similar. Juvenile recruitment occurred only in sediments containing less than 20 μg g−1. Males were significantly larger than females in the control sediment (Cu 5 μg g−1 dry weight) and male length decreased linearly with increasing copper concentration. The copper concentration within whole body tissues increased with dry body dry weight in all sediments except the highest copper concentration. Following 28 days of exposure, none of the female amphipods from the copper-dosed sediments was brooding embryos. In contrast, brood size of females in the control sediment (Cu 5 μg g−1) was similar to field samples. Because low concentrations of sediment copper affect the maturation and growth rates of male and female amphipods differently, these life-history traits could affect the population structure of amphipods exposed to copper contaminated sediments." @default.
- W1980622405 created "2016-06-24" @default.
- W1980622405 creator A5031713739 @default.
- W1980622405 date "2002-04-01" @default.
- W1980622405 modified "2023-09-27" @default.
- W1980622405 title "Life-history traits of a tube-dwelling corophioid amphipod, Paracorophium excavatum, exposed to sediment copper" @default.
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- W1980622405 doi "https://doi.org/10.1016/s0022-0981(02)00010-2" @default.
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