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- W2000289932 abstract "Embryos of the mummichog, Fundulus heteroclitus, were exposed to concentrations of methylmercury (meHg) below those that can cause morphological abnormalities. After hatching, larvae were kept in clean water and tested periodically for ability to capture prey (Artemia salina) or for their swimming performance and predator avoidance. Embryonic exposure to 10 μg/liter meHg resulted in reduced prey capture ability by early larvae, measured as total Artemia caught in 1 and 5 min. However, older larvae recovered from the behavioral deficits, perhaps owing to a compensation for early CNS insult. Fish from a chronically polluted environment (Piles Creek (PC), a tributary of the Arthur Kill), previously shown to have high tolerance to the teratogenic effects of higher concentrations of meHg, proved to be less susceptible to these behavioral effects than fish from a relatively uncontaminated site (EH). Also, the PC control larvae captured prey far more effectively than the EH larvae, although they made more miscues. When tested for swimming performance after embryonic exposure to 10 μg/liter, EH larvae had increased performance when compared to controls. This effect was also transitory. The improved swimming performance did not correspond to improved ability to avoid predation by grass shrimp (Palaemonetes pugio). The increased swimming performance may correspond to greater total activity, making them more likely to attract the predator's attention and resulting in increased capture. Thus, negative, though temporary, effects were observed in both prey capture and predator avoidance after embryonic exposure to meHg." @default.
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- W2000289932 date "1996-06-01" @default.
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- W2000289932 title "Behavioral effects in mummichog larvae (Fundulus heteroclitus) following embryonic exposure to methylmercury" @default.
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- W2000289932 doi "https://doi.org/10.1016/0141-1136(95)00048-8" @default.
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