Distribution of the tiger shark (Galeocerdo cuvier) in the North Atlantic Ocean by season, sex, and life stage, based on tag and recapture data

Natanson, L.J.; McCandless, C.T.; Kohler, N.E.

doi:10.7755/FB.121.4.1

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Distribution of the tiger shark (Galeocerdo cuvier) in the North Atlantic Ocean by season, sex, and life stage, based on tag and recapture data

2023
By Natanson, L.J. ; McCandless, C.T. ; Kohler, N.E.
Source: Fishery Bulletin 121(4)

[PDF-1.73 MB]

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Journal Title:

Fishery Bulletin
Personal Author:

Natanson, L.J. ; McCandless, C.T. ; Kohler, N.E.

Natanson, L.J. ; McCandless, C.T. ; Kohler, N.E. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center) Less -
Description:

Movements of the tiger shark (Galeocerdo cuvier) by life stage are largely unknown yet are necessary to determine essential fish habitat and sustainable fishery management practices. In an effort to elucidate distribution and movements of the tiger shark, we analyzed fishery-dependent and -independent tag (sample size [n]=10,516) and recapture (n=762) records for sharks caught in the North Atlantic Ocean during 1963–2018. Seasonal distribution of the tiger shark was examined by life stage—young of the year, juveniles (immature), and adults (mature)—and distribution patterns were used to identify potential nursery habitat. Tiger sharks were caught over a wide area from the Grand Banks of Newfoundland, Canada, south to Brazil and from coastal to offshore waters and into the eastern North Atlantic Ocean. Seasonal north–south movements were observed in all life stages, and 14 immature sharks were found to have migrated from the western to the eastern North Atlantic Ocean. A broad nursery area and a potential birthing area were identified on the continental shelf between Florida and Georgia on the basis of the repeated presence of neonates in summer across years and of the recapture of multiple tagged young-of-the-year sharks from the same location over a period of at least 2 years.
Keywords:

[+]

Fishes—Geographical Distribution Fishes—Seasonal Distribution Fish Tagging Tiger Shark Galeocerdo Cuvier Recapture Data Seasonal Migration Seasonal Movement
Source:

Fishery Bulletin 121(4)
DOI:

https://doi.org/10.7755/FB.121.4.1
Format:

PDF
Document Type:

Journal Article
Place as Subject:

North Atlantic Ocean
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:9dafaf82455f9b6156d3d57c431bd52d2d4fd559f8a38c67718ca93496b5bffa
Download URL:

https://repository.library.noaa.gov/view/noaa/56133/noaa_56133_DS1.pdf
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Distribution of the tiger shark (Galeocerdo cuvier) in the North Atlantic Ocean by season, sex, and life stage, based on tag and recapture data

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