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https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/RACE/SAP/Pathobiology%3B%202016%20Bitter%20crab%20disease%20prevalence%20in%20Chionoecetes%20spp.%20from%20eastern%20Bering%20Sea%20upper%20continental%20slope.csv |
https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/RACE/SAP/Pathobiology%3B%202016%20Bitter%20crab%20disease%20prevalence%20in%20Chionoecetes%20spp.%20from%20eastern%20Bering%20Sea%20upper%20continental%20slope.csv |
Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021.
Contact: Daniel.woodrich@noaa.gov |
download |
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https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords |
GCMD Keyword Forum Page |
Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt,
MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard
Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA).
URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords |
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https://www.afsc.noaa.gov |
Website |
Website for this organization |
information |
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https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center |
Alaska Fisheries Science Center Website |
AKFSC Home Page |
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https://www.fisheries.noaa.gov/inport/item/36062 |
Full Metadata Record |
View the complete metadata record on InPort for more information about this dataset. |
information |
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https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/36062.pdf |
NOAA Data Management Plan (DMP) |
NOAA Data Management Plan for this record on InPort. |
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This dataset contains randomly chosen samples of crab collected from the 2016 NOAA/NMFS/AFSC/RACE
groundfish and invertebrate resources bottom trawl survey of the eastern Bering Sea
continental slope (EBSS). The survey area extended from Unalaska and Akutan Island
to the U.S.-Russian maritime boundary and was divided into six geographic subareas.
Each tow is one-half hour in duration with a standard speed of 2.5 knots - exact tow
duration and distance fished for each haul can be found in RACEBASE.HAUL.
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The sex of the crab is identified (1 = Male, 2 = Female). Individual crab carapaces
were measured (± 1 mm), excluding spines, and are reported as size. Shell condition
class serves as a semi-quantitative index of molt status and time in shell post-molt.
Carapace shell condition was assigned to one of six classes according to specific
criteria (0 = premolt or molting, 2 = new hardshell both firm and clean, 3 = oldshell
slightly worn, 4 = oldshell worn, 5 = very oldshell). Chela height is measured on
right chela at greatest distance (± 0.1 mm) excluding spines. Null or blank fields
in data represent no chela height information reported for crab specimen.
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Female crab abdomens were evaluated to determine reproductive condition based on the
color of the eggs (0 = no eggs, 4 = orange, 9 = no egg color information reported
or does not apply), the condition of the eggs (0 = no eggs, 1 = uneyed, 9 = no egg
condition information reported or does not apply), and the size of the egg clutch
(0 = immature, 1 = mature female no eggs, 2 = trace to 1/8, 3 = 1/4, 4 = 1/2, 5 =
3/4, 6 = full, 9 = no egg clutch information reported or does not apply).
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DNA was extracted using modified Ivanova et al. (2006) protocol.
Extracted DNA was assayed with two primer sets, targeting either 18S or ITS1 rDNA,
to determine presence or absence of Hematodinium spp. Refer to metadata Point of
Contact for PCR conditions. PCR Result is identified (0 = negative for Hematodinium
DNA, 1 = positive for Hematodinium DNA, 3 = undetermined, at the limit of detection).
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