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Short Citation:
Southeast Fisheries Science Center, 2023: Flynet Trouser Trawl Turtle Excluder Device Testing,

Item Identification

Title: Flynet Trouser Trawl Turtle Excluder Device Testing
Status: Completed

In 1994, the National Marine Fisheries Service Northeast Fisheries Observer Program documented sea turtle bycatch in the Atlantic croaker (Micropogonias undulatus) and weakfish (Cynoscion regalis) trawl fishery off North Carolina. The fishery utilized a high opening bottom trawl locally known as a “flynet.” In 1998, the NMFS Southeast Fisheries Science Center Mississippi Laboratories initiated research to develop a Turtle Excluder Device (TED) for the flynet fishery. Over the next 10 years, numerous prototype designs were trialed to determine feasibility of use in the fishery. During the 2008 and 2009 fishing seasons a specialized TED, the Flexible Flatbar Flynet TED, developed specifically for the flynet fishery was tested for catch retention and bycatch reduction. Due to the highly variable catch rates in the fishery, a standard flynet was modified to utilize the “trouser trawl” comparative testing technique. The objectives of the study were to quantify the target and bycatch species catch loss associated with TED use in the Atlantic croaker targeted flynet fishery operating off North Carolina. In addition, usability testing was carried out to identify handling problems and specialized handling techniques required when using TEDs in this fishery. The study was carried out aboard a contracted commercial vessel operating along the North Carolina coast. Tow level data were collected and included; date, vessel identifier, TED position (port or starboard), target species, total catch, target catch, and bycatch. Start and end location, time, depth, and temperature were also collected. Data were used to determine TED efficiency with regard to target catch.


To evaluate the feasibility of a Turtle Excluder Device for the flynet fishery.


Theme Keywords

Thesaurus Keyword
None Flynet
None GOM
None Gulf of Mexico
None Mississippi Laboratories
None TED
None Trouser Trawl
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: 269818
Date Effective From: 2008
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: 269815
Date Effective From: 2013
Date Effective To:
Contact (Organization): Southeast Fisheries Science Center (SEFSC)
Address: 75 Virginia Beach Drive
Miami, FL 33149
Phone: (305)361-5761
Business Hours: 8:00 a.m. - 4:30 p.m. EST

Metadata Contact

CC ID: 269819
Date Effective From: 2008
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: 269824
W° Bound: -75.83333333333
E° Bound: -75
N° Bound: 36.5
S° Bound: 35.16666666667

North Carolina

Extent Group 1 / Time Frame 1

CC ID: 269822
Time Frame Type: Range
Start: 2008
End: 2009

Access Information

Security Class: Unclassified
Data Access Procedure:

Some information contained within the data are confidential and protected under FOIA Exemption 4: Trade Secrets, Commercial or Financial Information, see 5 U.S.C. 552(b)(4). These data are released after aggregation, to protect confidentiality.

Data Access Constraints:

Information contained in the data are protected under FOIA exemption which apply to Government information in accordance with 5 U.S.C. 552(b)(4): Trade Secrets, Commercial or Financial Information.

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.

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 finfish taxa. 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. Data prior to 2007 is in paper format and data from 2008 to present is in access database.

Catalog Details

Catalog Item ID: 30064
GUID: gov.noaa.nmfs.inport:30064
Metadata Record Created By: Lisa L Desfosse
Metadata Record Created: 2016-01-11 17:32+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