A comparison of reproductive parameters of the Bering skate, Bathyraja interrupta, from two Alaskan large marine ecosystems

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Ainsley, S. M., Ebert, D. A., & Cailliet, G. M. (2011). A comparison of reproductive parameters of the Bering skate, Bathyraja interrupta, from two Alaskan large marine ecosystems. Marine and Freshwater Research, 62(6), 557-566. doi:10.1071/MF10140
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TitleA comparison of reproductive parameters of the Bering skate, Bathyraja interrupta, from two Alaskan large marine ecosystems
AuthorsS. Ainsley, D. Ebert, G. Cailliet
AbstractEstimates of size at maturity are crucial to fisheries stock assessments and may change spatially and temporally. This study directly compares life-history characteristics of a skate species in two large marine ecosystems in a region where there is both a directed fishery and considerable skate by-catch in other fisheries. The Bering skate, Bathyraja interrupta, is one of the most common skate species in Alaskan waters, occurring in two large marine ecosystems, the eastern Bering Sea (EBS) and the Gulf of Alaska (GOA), but little is known about its life history. Skates were sampled from both regions between 2004 and 2007. In the GOA, the size at maturity was estimated to be 69cm total length(TL) for males and 71cmTL for females, while in the EBS size at maturity was estimated as 70cm and 72cmTL for males and females, respectively. Median size at maturity differed by sex but not by region. Our results indicate that B. interrupta shows late maturity, typical of most skate species, suggesting that more detailed monitoring of skate populations and precautionary management is warranted as skate fisheries expand. © CSIRO 2011.
JournalMarine and Freshwater Research
Date2011
Start page557
End page566
ISSN13231650
Subjectsbiomonitoring, bycatch, catch composition, estimation method, fish, life history, marine ecosystem, maturation, parameterization, reproduction, size structure, spatiotemporal analysis, species occurrence, stock assessment, Alaska, Bering Sea, Gulf of Alaska, Pacific Ocean, United States, Bathyraja interrupta, Leucoraja erinacea
NoteCited By (since 1996):2, Fish and Fisheries, CODEN: AJMFA

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