Search Help Show/Hide Menu
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
URLs
Data Quality
Data Management
Lineage
Catalog Details

Summary

Short Citation
Alaska Fisheries Science Center, 2024: AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus, https://www.fisheries.noaa.gov/inport/item/27998.
Full Citation Examples

Abstract

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.

Distribution Information

Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

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.

Controlled Theme Keywords

biota, oceans

Child Items

No Child Items for this record.

Contact Information

Point of Contact
Christina Conrath
christina.conrath@noaa.gov
907 481 1732

Metadata Contact
Metadata Coordinators MC
AFSC.metadata@noaa.gov

Extents

Geographic Area 1

-154° W, -150.7° E, 58.5° N, 57.5° S

Time Frame 1
2014-01-01 - 2015-06-01

Item Identification

Title: AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus
Short Name: AFSC/RACE/GAP/Conrath: Delayed discard mortality of the North Pacific giant octopus
Status: Completed
Abstract:

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.

Purpose:

These data are necessary to make sound management decisions for octopus based on appropriate scientific information.

Notes:

Loaded by FGDC Metadata Uploader, batch 7313, 10-15-2015 12:13

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
biota
ISO 19115 Topic Category
oceans
UNCONTROLLED
None giant Pacific octopus, Enteroctopus dofleini, north Pacific giant octopus, growth, mortality, discard mortality

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Gulf of Alaska

Physical Location

Organization: Alaska Fisheries Science Center
City: Seattle
State/Province: WA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Access Database, spreadsheets
Data Presentation Form: Table (digital)
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.

Support Roles

Data Steward

CC ID: 239496
Date Effective From: 2015-10-29
Date Effective To:
Contact (Person): Conrath, Christina
Email Address: christina.conrath@noaa.gov
Phone: 907 481 1732

Distributor

CC ID: 239498
Date Effective From: 2015-10-29
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
USA
Email Address: afsc.webmaster@noaa.gov
Phone: (206) 526-4000
Fax: (206) 526-4004
URL: https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
Business Hours: 0700-1700 Pacific Time

Distributor

CC ID: 239499
Date Effective From: 2015-10-29
Date Effective To:
Contact (Person): Conrath, Christina
Email Address: christina.conrath@noaa.gov
Phone: 907 481 1732

Metadata Contact

CC ID: 233035
Date Effective From: 2015-10-15
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address: AFSC.metadata@noaa.gov

Originator

CC ID: 233036
Date Effective From: 2015-10-15
Date Effective To:
Contact (Person): Conrath, Christina
Email Address: christina.conrath@noaa.gov
Phone: 907 481 1732

Originator

CC ID: 233037
Date Effective From: 2015-10-15
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
USA
Email Address: afsc.webmaster@noaa.gov
Phone: (206) 526-4000
Fax: (206) 526-4004
URL: https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
Business Hours: 0700-1700 Pacific Time

Point of Contact

CC ID: 239506
Date Effective From: 2015-10-29
Date Effective To:
Contact (Person): Conrath, Christina
Email Address: christina.conrath@noaa.gov
Phone: 907 481 1732

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 239507
W° Bound: -154
E° Bound: -150.7
N° Bound: 58.5
S° Bound: 57.5

Extent Group 1 / Time Frame 1

CC ID: 239509
Time Frame Type: Range
Start: 2014-01-01
End: 2015-06-01

Access Information

Security Class: Unclassified
Data Access Procedure:

E-mail PI

Data Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

Data 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.

Distribution Information

Distribution 1

CC ID: 247537
Download URL: https://access.afsc.noaa.gov/data-zips/27998_RACE_2014_CONRATH_Delayed_discard_mortality_of_the_North_Pacific_giant_octopus.zip
Distributor: Christina Conrath (2015-10-29 - Present)
File Name: 27998_RACE_2014_CONRATH_Delayed_discard_mortality_
File Type (Deprecated): Zip
Compression: Zip

URLs

URL 1

CC ID: 246866
URL: https://www.ncei.noaa.gov
URL Type:
Online Resource
File Resource Format: web page
Description:

Federal data repository

Data Quality

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

Quality Control Procedures Employed:

unknown

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: yes
Approximate Delay Between Data Collection and Dissemination: unknown
Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

"IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption."

Lineage

Lineage Statement:

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.

Process Steps

Process Step 1

CC ID: 239510
Description:

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

Catalog Details

Catalog Item ID: 27998
GUID: gov.noaa.nmfs.inport:27998
Metadata Record Created By: Nancy Roberson
Metadata Record Created: 2015-10-15 12:13+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2024-01-15 12:08+0000
Metadata Record Published: 2016-05-18
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2016-05-18
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2017-05-18