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Euphausia pacifica brood sizes: a North Pacific synthesis

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Title Euphausia pacifica brood sizes: a North Pacific synthesis
Names Feinberg, L. R. (creator)
Shaw, C. T. (creator)
Peterson, W. T. (creator)
Décima, M. (creator)
Okazaki, Y. (creator)
Ju, S.-J. (creator)
Date Issued 2013-11 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by Oxford University Press. The published article can be found at: http://plankt.oxfordjournals.org/.
Abstract Euphausia pacifica occupy a remarkably wide range of ecosystems. We examined the
differences in brood sizes from eight regions of the North Pacific to explore how variation
in the brood size might contribute to their success over such a range. We show
a compilation and analysis of short-term E. pacifica brood size incubations from
around the North Pacific rim, ranging from the Yellow Sea (YS) (Korea) to southern
California (SC), USA. Brood sizes for E. pacifica are highly variable in all regions and
range from 5 to 697 eggs overall. Median brood sizes were largest in the YS and off
Newport, Oregon and the maximum brood sizes were greatest in the regions off the
coasts of Oregon and Washington, USA followed by the YS. Quantile regression
analysis revealed that there was a significant relationship between the female length
and the maximum brood size (95% quantile) for broods from SC, Oregon, and
Washington, USA as well as Toyama Bay, Japan, indicating that the maximum
brood size is limited by the female length in these regions. This suggests that other
factors, hydrographic conditions, food quantity/quality or physiological condition of
females, may limit maximum brood sizes in the other regions examined here.
Genre Article
Topic Euphausia pacifica
Identifier Feinberg, L. R., Shaw, C. T., Peterson, W. T., Décima, M., Okazaki, Y., & Ju, S. J. (2013). Euphausia pacifica brood sizes: a North Pacific synthesis. Journal of Plankton Research, 35(6), 1192-1206. doi:10.1093/plankt/fbt064

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