gov.noaa.nmfs.inport:27998 eng UTF8 dataset Access Database, spreadsheets Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider 2026-03-04T19:17:17 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus publication NOAA/NMFS/EDM 27998 https://www.fisheries.noaa.gov/inport/item/27998 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Conrath, Christina 907 481 1732 christina.conrath@noaa.gov originator Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time originator https://www.ncei.noaa.gov WWW:LINK-1.0-http--link Citation URL Federal data repository download tableDigital The majority of octopus bycatch occurs in Pacific cod pot fisheries and recent data collected by North Pacific Groundfish Observers indicate that immediate mortality of octopus caught in these fisheries is very small. The objectives of the proposed research were to examine the delayed mortality of E. dofleini captured in Pacific cod pot fisheries. These data are necessary to make sound management decisions for octopus based on appropriate scientific information. This data set contains observations and measurements on the condition, weight, and survivorship of North Pacific giant octopus that were caught as bycatch in commercial fishing operations utilizing pot gear to target Pacific cod. These octopus were captured during commercial fishing operations that occurred during three fishing seasons from January 2014 through February 2015. These commercial fishing operations occurred in the central Gulf of Alaska in either Shelikof Strait or Marmot Bay. Data collected included information on octopus condition, size, sex, and injury presence. Other data collected included the location of capture, water depth, octopus air exposure time, water temperature, and gear soak time. These octopus were transported to the Kodiak sea water facility and held for a period of several months. During this period data were collected on condition, injury presence, and survivorship at 21 days. After this period octopus were held for an additional five to six weeks to assess growth within the laboratory. Octopus were fed to satiation every 72 hours during this period. Food was weighed prior to feeding and remaining food was weighed after a four hour period. The final food weight was corrected for water soaking time. Octopus were weighed once per week during this period of time. Several metrics of octopus feeding and growth were measured after this period including specific growth rate, absolute growth rate, absolute feeding rate, specific feeding rate, feeding efficiency, and daily growth rate. These data are necessary to make sound management decisions for octopus based on appropriate scientific information. completed Conrath, Christina 907 481 1732 christina.conrath@noaa.gov pointOfContact Conrath, Christina 907 481 1732 christina.conrath@noaa.gov custodian giant Pacific octopus, Enteroctopus dofleini, north Pacific giant octopus, growth, mortality, discard mortality theme Gulf of Alaska place DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) 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 information custodian Groundfish Assessment Program project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus [Data Date Range], https://www.fisheries.noaa.gov/inport/item/27998. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested. otherRestrictions Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 27998 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/27998.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US biota oceans -154 -150.7 57.5 58.5 | Currentness: Ground Condition 2014-01-01 2015-06-01 Zip Zip Conrath, Christina 907 481 1732 christina.conrath@noaa.gov distributor Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time distributor https://access.afsc.noaa.gov/data-zips/27998_RACE_2014_CONRATH_Delayed_discard_mortality_of_the_North_Pacific_giant_octopus.zip WWW:LINK-1.0-http--link 27998_RACE_2014_CONRATH_Delayed_discard_mortality_ download dataset Completeness Measure One octopus experienced mortality due to equipment failure at the laboratory. This octopus is denoted in the database with a comment in the final condition section of the mortality table. All other octopus completed the discard mortality study. Additional octopus that were not deemed healthy at the onset of the growth study were not included within this study Parameters associated with capture events (dates, air temperature, water temperature, etc.) were collected by a biological technician. Air temperature was measured using standard thermometers and water temperatures were collected using temperature tid-bits that were attached to pot gear. All equipment utilized was in appropriate working order during these collections. All biological data collected in the laboratory (weight, food weight, etc.) were measured using laboratory bench top scales which were calibrated regularly to minimize measurement error. Octopus were collected from commercial fishers during regular fishing operations targeting Pacific cod using pot gear. Octopus were assessed for condition and placed in tanks on board the fishing vessels. After a period of seventy two hours or less they were transported to the Kodiak Laboratory either via a tender vessel or the fishing vessel. Octopus were placed in individual tanks upon arrival at the laboratory. Within a 48 hour period a detailed assessment of the condition of each octopus was conducted, the gender of the octopus was determined, and each octopus was weighed. To weigh individual octopus, they were removed from their tanks, excess water was released from the mantle, and the octopus were weighed using standard bench top scales. Octopus were held for twenty one days; during this period they were fed herring to satiation two times per week. After 21 days, another detailed assessment was conducted. 20150515