Hook ingestion rates in loggerhead sea turtles Caretta caretta as a function of animal size, hook size, and bait.
Document (DOC) | Southeast Fisheries Science Center (SEFSC)GUID: gov.noaa.nmfs.inport:37002 | Updated: August 9, 2022 | Published / External
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Summary
DOI: 10.3354/esr00339
DescriptionDeclines in sea turtle populations worldwide have been attributed in part to incidental capture in hook and line fisheries. Methods to reduce turtle bycatch and mortality must strike a balance between bycatch reduction and target species retention if they are to gain acceptance from fishers. To investigate potential bycatch reduction measures, we examined the effects of hook size, bait type, baiting technique, and animal size on the frequency of loggerhead sea turtles Caretta caretta ingesting a baited hook during controlled trials. Results indicated that as hook size increased, the likelihood for deep ingestion decreased. Smaller turtles were less likely to swallow larger hooks. Turtles were less likely to swallow hooks baited with sardines than with squid and single-baited rather than threaded baits. Results are likely due to differences in bait texture, hook shielding effects, and turtlesâ behavioral differences. We suggest that fishing with large hooks, using finfish instead of squid, and using single-baited instead of threaded baits might reduce deep ingestion rates of hooks by loggerheads as large as 65 cm in standard straight carapace length (notch to tip).
Document Information
Document Type
Journal article
Document Format
Acrobat Portable Document Format
Contact Information
No contact information is available for this record.
Please contact the owner organization (SEFSC) for inquiries on this record.
Item Identification
Title: | Hook ingestion rates in loggerhead sea turtles Caretta caretta as a function of animal size, hook size, and bait. |
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Abstract: |
Declines in sea turtle populations worldwide have been attributed in part to incidental capture in hook and line fisheries. Methods to reduce turtle bycatch and mortality must strike a balance between bycatch reduction and target species retention if they are to gain acceptance from fishers. To investigate potential bycatch reduction measures, we examined the effects of hook size, bait type, baiting technique, and animal size on the frequency of loggerhead sea turtles Caretta caretta ingesting a baited hook during controlled trials. Results indicated that as hook size increased, the likelihood for deep ingestion decreased. Smaller turtles were less likely to swallow larger hooks. Turtles were less likely to swallow hooks baited with sardines than with squid and single-baited rather than threaded baits. Results are likely due to differences in bait texture, hook shielding effects, and turtlesâ behavioral differences. We suggest that fishing with large hooks, using finfish instead of squid, and using single-baited instead of threaded baits might reduce deep ingestion rates of hooks by loggerheads as large as 65 cm in standard straight carapace length (notch to tip). |
Purpose: |
To investigate potential bycatch reduction measures by examining the effects of hook size, bait type, baiting technique, and animal size on the frequency of loggerhead sea turtles Caretta caretta ingesting a baited hook during controlled trials |
Other Citation Details: |
journal article citation Stokes, L.W., Hataway, D., Epperly, S.P., Shah, A.K., Bergmann, C.E., Watson, J.W., and Higgins, B.M. 2011. Hook ingestion rates in loggerhead sea turtles Caretta caretta as a function of animal size, hook size, and bait. Endangered Species Research 14:1-11. : |
Supplemental Information: |
Supplemental files are included in a separate supplied url |
DOI (Digital Object Identifier): | 10.3354/esr00339 |
Keywords
Theme Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
DOI | 10.3354/esr00339 |
None | Bycatch |
None | Caretta caretta |
None | Experimental |
None | Loggerhead |
None | Longline fishing |
None | Sea turtle |
Document Information
Document Type: | Journal article |
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Format: | Acrobat Portable Document Format |
Status Code: | Published |
Support Roles
Author
Date Effective From: | 2011-04-07 |
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Date Effective To: | |
Contact (Person): | Stokes, Lesley |
Address: |
75 Virginia Beach Drive Miami, FL 33139 |
Email Address: | Lesley.Stokes@noaa.gov |
Phone: | 305-361-4228 |
Business Hours: | 8:00 AM - 4:30 PM EST/EST |
Contact Instructions: |
prefer email |
Co-Author
Date Effective From: | 2011-04-07 |
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Date Effective To: | |
Contact (Person): | Higgins, Benjamin |
Address: |
4700 Avenue U Galveston, TX 77551 |
Email Address: | ben.higgins@noaa.gov |
Phone: | 409-766-3670 |
Co-Author
Date Effective From: | 2011-04-07 |
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Date Effective To: | |
Contact (Person): | Epperly, Sheryann |
Email Address: | epperlychester@gmail.com |
Contact Instructions: |
retired government eployee New contact email is epperlychester@gmail.com |
Co-Author
Date Effective From: | 2011-04-07 |
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Date Effective To: | |
Contact (Person): | Hataway, Bret D |
Address: |
202 Delmas Avenue Pascagoula, MS 33149 USA |
Email Address: | bret.d.hataway@noaa.gov |
Phone: | 228-762-4591 x291 |
Fax: | 228-769-9200 |
Access Information
Security Class: | Unclassified |
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Data Access Policy: |
Open to everyone |
Data Access Procedure: |
Download from provided link |
Data Access Constraints: |
None |
Data Use Constraints: |
Please cite appropriately |
Metadata Access Constraints: |
None |
Metadata Use Constraints: |
Please cite appropriately |
URLs
URL 1
URL: | http://www.int-res.com/articles/esr_oa/n014p001.pdf |
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URL Type: |
Online Resource
|
Description: |
To download article from journal website |
URL 2
URL: | http://www.int-res.com/articles/suppl/n014p001_supp.pdf |
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URL Type: |
Online Resource
|
Description: |
To download supplemental Files For Journal article |
Catalog Details
Catalog Item ID: | 37002 |
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GUID: | gov.noaa.nmfs.inport:37002 |
Metadata Record Created By: | Lee M Weinberger |
Metadata Record Created: | 2017-03-05 12:42+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-08-09 17:11+0000 |
Metadata Record Published: | 2021-04-29 |
Owner Org: | SEFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2021-04-29 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2022-04-29 |