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Short Citation:
Southeast Fisheries Science Center, 2022: Fishery-Independent Turtle Excluder Device Catch Assessment Data: Skimmer Trawl Fishery,

Item Identification

Title: Fishery-Independent Turtle Excluder Device Catch Assessment Data: Skimmer Trawl Fishery
Status: Completed

Skimmer trawls are utilized throughout the southeastern United States to target penaeid shrimp (Penaeidae). Because the codends of these trawls can be readily retrieved, skimmer trawls are allowed to utilize restricted tow times (55 and 75 minute, seasonally) in lieu of Turtle Excluder Device (TED) requirements as a sea turtle bycatch mitigation measure. However, observations aboard commercial vessels indicate that tow times are often exceeded. In 2013, the Southeast Fisheries Science Center Mississippi Laboratories began independent skimmer trawl TED testing aboard the NOAA vessel, RV Caretta. Testing was conducted from 2013 to 2015 on traditional commercial fishing grounds located in the internal coastal waters of Mississippi and Louisiana. The experimental design consisted of paired comparisons designed to examine shrimp catch retention and bycatch. A TED was installed in one net (treatment), while the other was left naked with no TED installed (control). The TED was switched between port and starboard nets daily to remove potential vessel side bias. Data consists of tow level data for each net (treatment vs control) for five major catch categories; shrimp, finfish, non-shrimp crustaceans, other invertebrates, and debris. Start and end locations, times, and depths were recorded for each tow along with vessel identifier, date, tow speed, TED configuration, and location of the TED (port vs starboard). Data were used to determine TED efficiency with regard to shrimp catch and bycatch reduction.


To independently evaluate and test the use of skimmer trawl Turtle Excluder Devices.


Theme Keywords

Thesaurus Keyword
None Fishery Independent
None GOM
None Gulf of Mexico
None Mississippi Laboratories
None Skimmer Trawl
None TED
None Turtle Excluder Device

Physical Location

Organization: Mississippi Laboratory
City: Pascagoula
State/Province: MS

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Access Database, spreadsheets
Maintenance Frequency: As Needed
Data Presentation Form: Table (digital)

Support Roles

Data Steward

CC ID: 266986
Date Effective From: 2013
Date Effective To:
Contact (Person): Gearhart, Jeff
Address: 3209 Frederic St.
Pascagoula, MS 39568
Email Address:
Phone: 228-549-1764
Fax: 228-769-8699


CC ID: 266988
Date Effective From: 2013
Date Effective To:
Contact (Person): Weber, Charles J
Address: 3209 Frederic Street
Pascagoula, MS 39567-4112
Phone: 228-549-1684
Fax: 228-769-9200
Business Hours: Retired IT United Head Pascagoula

Metadata Contact

CC ID: 266984
Date Effective From: 2013
Date Effective To:
Contact (Person): Gearhart, Jeff
Address: 3209 Frederic St.
Pascagoula, MS 39568
Email Address:
Phone: 228-549-1764
Fax: 228-769-8699
View Historical Support Roles


Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 267482
W° Bound: -89.5
E° Bound: -88.3
N° Bound: 30.33333333333
S° Bound: 29.45

Extent Group 1 / Time Frame 1

CC ID: 266991
Time Frame Type: Continuing
Start: 2013

Access Information

Security Class: Unclassified
Data Access Procedure:

Contact the individual identified as the distributor for this data set. Please include the title of the data set and the name of the data steward when requesting a copy of this data.

Data Access Constraints:

There are not restrictions or legal prerequisites for accessing this data.

Data Use Constraints:

NOAA NMFS does not approve, recommend, or endorse any proprietary product or proprietary material mentioned in this publication. No reference shall be made to NMFS, or to this publication furnished by NMFS, in any advertising or sales promotion which would indicate or imply that NMFS approves, recommends, or endorses any proprietary product or proprietary material mentioned herein or which has as its purpose any intent to cause directly or indirectly the advertised product to be used or purchased because of this NMFS publication. NMFS is not responsible for any uses of these datasets beyond those for which they were intended, and NMFS makes no claims regarding the accuracy of any data provided by agencies or individuals outside NMFS. Acknowledgement of NOAA NMFS would be appreciated in products derived or publications generated from this data.

Distribution Information

Distribution 1

CC ID: 266979
Download URL:

Data Quality

Quality Control Procedures Employed:

After collection, data is reviewed for accuracy and completeness by the principal investigator.

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: 0
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: Yes
If Distributor (Data Hosting Service) is Needed, Please Indicate: Yes
Approximate Delay Between Data Collection and Dissemination: 30 Days
Actual or Planned Long-Term Data Archive Location: NCEI-MS
Approximate Delay Between Data Collection and Archiving: 365 Days
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

Data resides on Networked Attached Storage (NAS) environment. Security patches/updates are immediately applied to the host environment. Data is stripped/mirrored using RAID 50 technology to protect data from disk failure. Nightly backups are preformed and files are written to magnetic tape and stored in an onsite / offsite location.


Lineage Statement:

Trawl catch is sorted to shrimp, finfish, non-shrimp crustaceans, other invertebrates, and debris. Shrimp and selected finfish are identified to species. Catch and length frequency data are recorded onto datasheets. Datasheets were checked in the field after sampling and data were checked after data entry. The principal investigators review the data for content to ensure the relevance/accuracy of data collected.

Catalog Details

Catalog Item ID: 29495
GUID: gov.noaa.nmfs.inport:29495
Metadata Record Created By: Charles J Weber
Metadata Record Created: 2015-12-04 16:54+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2021-10-27
Owner Org: SEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2021-10-27
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2022-10-27