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- W2332218616 abstract "Larvae of the brachyuran crab Hemigrapsus oregonensis were raised in the laboratory from broods obtained from egg-bearing females collected at a site previously contaminated by a spill of crude petroleum hydrocarbons and from a site not recently contaminated. Larvae from both sites were raised throughout development on 2 diets of the rotifer Brachionus plicatilis, one in which the rotifer was cultured on the green alga Dunaliella tertiolecta, the other cultured on the brown alga Isochrysis galbana. Percentage mortality per stage for larvae from the contaminated site was equal to or lower than for larvae from the clean site. There was no difference in duration of zoeal development nor for megalopal weight for larvae from either site on either diet. Larvae raised on rotifers fed Dunaliella showed higher mortality during the fifth zoeal stage, longer zoeal duration for stages II-V, and lower megalopal weight than did those raised on rotifers fed Isochrysis. Results indicate that previous exposure to petroleum hydrocarbon contamination during brooding has no effect on subsequent zoeal development when larvae are not directly exposed to contamination. Differences in larval response to diet demonstrate that the nutritional value of heterotrophic prey will depend upon what the prey has previously fed upon, either in the laboratory or in nature. Marine organisms may be exposed to petroleum hydrocarbon contamination in coastal waters due to transport, exploration and development of petroleum resources, and episodes of mechanical and industrial failure (Burger and Gochfeld, 1992). Crabs that occupy shallow subtidal and intertidal habitats may be particularly susceptible to hydrocarbon exposure due to their sedentary life style that includes burrowing into the mud or hid" @default.
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- W2332218616 date "1999-11-01" @default.
- W2332218616 modified "2023-09-24" @default.
- W2332218616 title "Effects of Prior Exposure to Petroleum Hydrocarbon Contamination during Brooding on the Subsequent Larval Development of the Brachyuran Crab Hemigrapsus oregonensis" @default.
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- W2332218616 doi "https://doi.org/10.2307/1549292" @default.
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