Review on the Effect of Hook Type on the Catchability, Hooking Location, and Post-Capture Mortality of the Shortfin Mako, Isurus Oxyrinchus

Keller, Bryan; Swimmer, Y.; Brown, C.

doi:10.25923/gx1p-m838

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Review on the Effect of Hook Type on the Catchability, Hooking Location, and Post-Capture Mortality of the Shortfin Mako, Isurus Oxyrinchus

2020
By Keller, Bryan ; Swimmer, Y. ; Brown, C.
Series: PIFSC working paper ; WP-20-003

[PDF-282.12 KB]

Details You May Also Like

Details:

Personal Author:

Keller, Bryan ; Swimmer, Y. ; Brown, C.

Keller, Bryan ; Swimmer, Y. ; Brown, C. Less -
Corporate Authors:

United States, National Marine Fisheries Service. ; Pacific Islands Fisheries Science Center (U.S.)

United States, National Marine Fisheries Service. ; Pacific Islands Fisheries Science Center (U.S.) Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) Less -
Description:

Due to the assessed vulnerability for the North Atlantic shortfin mako, Isurus oxyrinchus, ICCAT has identified the need to better understand the use of circle hooks as a potential mitigation measure in longline fisheries. We conducted a literature review related to the effect of hook type on the catchability, anatomical hooking location, and post-capture mortality of this species. We found twenty eight papers related to these topics, yet many were limited in interpretation due to small sample sizes and lack of statistical analysis. In regards to catchability, our results were inconclusive, suggesting no clear trend in catch rates by hook type. The use of circle hooks was shown to either decrease or have no effect on at-haulback mortality. Three papers documented post-release mortality, ranging from 23-31%. The use of circle hooks significantly increased the likelihood of mouth hooking, which is associated with lower rates of post-release mortality. Overall, our review suggests minimal differences in catchability of shortfin mako between hook types, but suggests that use of circle hooks likely results in higher post-release survival that may assist population recovery efforts.
Keywords:

[+]

Bycatches Fishhooks Longlining (Fisheries) Mortality Shortfin Mako
Series:

PIFSC working paper ; WP-20-003
DOI:

https://doi.org/10.25923/gx1p-m838
Document Type:

Working Paper
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:9ad7caa8ca991938ae4c533b33db1b988c18a63508faeda966a011ccb66cb20a
Download URL:

https://repository.library.noaa.gov/view/noaa/25889/noaa_25889_DS1.pdf
File Type:

No Additional Files

More +

Review on the Effect of Hook Type on the Catchability, Hooking Location, and Post-Capture Mortality of the Shortfin Mako, Isurus Oxyrinchus

Details:

Supporting Files

You May Also Like