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The effects of temperature on growth, development and settlement of northern rock sole larvae (Lepidopsetta polyxystra)

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https://ir.library.oregonstate.edu/concern/articles/dn39x338g

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Abstract
  • Northern rock sole (Lepidopsetta polyxystra) is a commercially important fish in the North Pacific and a focal species in understanding larval transport to nursery grounds in the Bering Sea. However, the temperature-dependent vital rates and settlement dynamics for this species have not been described in detail. We reared northern rock sole larvae in the laboratory to measure growth, condition, development and settlement parameters across four temperatures (2, 4, 7 and 10°C). Both length and mass-measured growth rates increased with temperature and were best described by non-linear regression. Residuals of the length–mass relationships were positively related to temperature, indicating larval condition also increased with temperature. Larval development and settlement were largely size dependent, resulting in reduced larval stage duration and earlier settlement at higher temperatures owing to more rapid growth at elevated temperatures. However, larvae at colder temperatures were less developed at a given size, but more likely to settle at smaller sizes than larvae reared in warmer conditions. These temperature–response parameters can be used to refine current and future transport models for northern rock sole larvae under changing environmental conditions in the North Pacific.
  • Keywords: dispersal, settlement dynamics, larval transport, climate change, metamorphosis, inner front
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  • Laurel, B. J., Danley, C, & Haines, S. (2014). The effects of temperature on growth, development and settlement of northern rock sole larvae (Lepidopsetta polyxystra). Fisheries Oceanography, 23(6), 495–505. doi:10.1111/fog.12084
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  • 23
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  • 6
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  • This project was supported in part with funding from the NOAA-AFSC’s Habitat and Ecological Processes Research (HEPR) Program.
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