Preliminary estimate of post-release survival of immature porbeagles caught with rod-and-reel in the Northwest Atlantic Ocean

Brooke N. Anderson; Heather D. Bowlby; Lisa J. Natanson; Rui Coelho; Enric Cortés; Andrés Domingo; James A. Sulikowski

doi:10.3354/meps13603

Preliminary estimate of post-release survival of immature porbeagles caught with rod-and-reel in the Northwest Atlantic Ocean

Brooke N. Anderson, Heather D. Bowlby, Lisa J. Natanson, Rui Coelho, Enric Cortés, Andrés Domingo, James A. Sulikowski

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The Northwest Atlantic (NWA) population of porbeagles Lamna nasus is susceptible to capture in rod-and-reel fisheries and most individuals are discarded alive due to catch and size limits. To estimate post-release survival, pop-off satellite archival tags were attached to porbeagles captured with rod-and-reel. Fourteen tags were deployed, of which 13 transmitted. All sharks for which we had data survived, giving a post-release survival rate of 100%. Following release, 6 individuals remained in surface waters for several hours to days, while 2 individuals immediately resumed normal diving behaviors. For the remaining sharks (n = 5), low tag transmission resolution precluded the detection of fine scale post-release behavior. The duration of initial depth-holding behavior was characterized using a break-point analysis of dive track variance, which suggests porbeagles exhibited a median post-release recovery period of 116 h (10th and 90th percentiles = 68.8 and 280.1 h) following capture and handling. Our preliminary study suggests immature porbeagles are resilient to capture and handling, although more data would provide stronger support for management recommendations.

Original language	English (US)
Pages (from-to)	153-159
Number of pages	7
Journal	Marine Ecology Progress Series
Volume	660
DOIs	https://doi.org/10.3354/meps13603
State	Published - 2021
Externally published	Yes

Keywords

Porbeagle
Shark
Survival

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Aquatic Science
Ecology

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10.3354/meps13603

Cite this

@article{667ae26c9c504bcfbf2b351020b22a69,

title = "Preliminary estimate of post-release survival of immature porbeagles caught with rod-and-reel in the Northwest Atlantic Ocean",

abstract = "The Northwest Atlantic (NWA) population of porbeagles Lamna nasus is susceptible to capture in rod-and-reel fisheries and most individuals are discarded alive due to catch and size limits. To estimate post-release survival, pop-off satellite archival tags were attached to porbeagles captured with rod-and-reel. Fourteen tags were deployed, of which 13 transmitted. All sharks for which we had data survived, giving a post-release survival rate of 100%. Following release, 6 individuals remained in surface waters for several hours to days, while 2 individuals immediately resumed normal diving behaviors. For the remaining sharks (n = 5), low tag transmission resolution precluded the detection of fine scale post-release behavior. The duration of initial depth-holding behavior was characterized using a break-point analysis of dive track variance, which suggests porbeagles exhibited a median post-release recovery period of 116 h (10th and 90th percentiles = 68.8 and 280.1 h) following capture and handling. Our preliminary study suggests immature porbeagles are resilient to capture and handling, although more data would provide stronger support for management recommendations.",

keywords = "Porbeagle, Shark, Survival",

author = "Anderson, {Brooke N.} and Bowlby, {Heather D.} and Natanson, {Lisa J.} and Rui Coelho and Enric Cort{\'e}s and Andr{\'e}s Domingo and Sulikowski, {James A.}",

note = "Funding Information: We thank the fishermen (D. Johnson, K. DePersia, N. Ribblett), members of the MA Division of Marine Resources (B. Hoffman), and students that assisted in fieldwork for this study. We thank John Carlson for the contribution of PSATs, the International SeaKeepers Society for access to fishing vessels, Captain Dave Johnson of the F/V Pritnear Heaven for use of his vessel, and the Animal Telemetry Network for providing satellite time. Four tags were provided by ICCAT/SRDCP (Shark Research and Data Collection Programme). Protocols were approved by University of New England{\textquoteright}s Institutional Animal Care and Use Committee (Protocol #051518-001). Publisher Copyright: {\textcopyright} Inter-Research and Fisheries and Oceans Canada 2021.",

year = "2021",

doi = "10.3354/meps13603",

language = "English (US)",

volume = "660",

pages = "153--159",

journal = "Marine Ecology Progress Series",

issn = "0171-8630",

publisher = "Inter-Research",

}

TY - JOUR

T1 - Preliminary estimate of post-release survival of immature porbeagles caught with rod-and-reel in the Northwest Atlantic Ocean

AU - Anderson, Brooke N.

AU - Bowlby, Heather D.

AU - Natanson, Lisa J.

AU - Coelho, Rui

AU - Cortés, Enric

AU - Domingo, Andrés

AU - Sulikowski, James A.

N1 - Funding Information: We thank the fishermen (D. Johnson, K. DePersia, N. Ribblett), members of the MA Division of Marine Resources (B. Hoffman), and students that assisted in fieldwork for this study. We thank John Carlson for the contribution of PSATs, the International SeaKeepers Society for access to fishing vessels, Captain Dave Johnson of the F/V Pritnear Heaven for use of his vessel, and the Animal Telemetry Network for providing satellite time. Four tags were provided by ICCAT/SRDCP (Shark Research and Data Collection Programme). Protocols were approved by University of New England’s Institutional Animal Care and Use Committee (Protocol #051518-001). Publisher Copyright: © Inter-Research and Fisheries and Oceans Canada 2021.

PY - 2021

Y1 - 2021

N2 - The Northwest Atlantic (NWA) population of porbeagles Lamna nasus is susceptible to capture in rod-and-reel fisheries and most individuals are discarded alive due to catch and size limits. To estimate post-release survival, pop-off satellite archival tags were attached to porbeagles captured with rod-and-reel. Fourteen tags were deployed, of which 13 transmitted. All sharks for which we had data survived, giving a post-release survival rate of 100%. Following release, 6 individuals remained in surface waters for several hours to days, while 2 individuals immediately resumed normal diving behaviors. For the remaining sharks (n = 5), low tag transmission resolution precluded the detection of fine scale post-release behavior. The duration of initial depth-holding behavior was characterized using a break-point analysis of dive track variance, which suggests porbeagles exhibited a median post-release recovery period of 116 h (10th and 90th percentiles = 68.8 and 280.1 h) following capture and handling. Our preliminary study suggests immature porbeagles are resilient to capture and handling, although more data would provide stronger support for management recommendations.

AB - The Northwest Atlantic (NWA) population of porbeagles Lamna nasus is susceptible to capture in rod-and-reel fisheries and most individuals are discarded alive due to catch and size limits. To estimate post-release survival, pop-off satellite archival tags were attached to porbeagles captured with rod-and-reel. Fourteen tags were deployed, of which 13 transmitted. All sharks for which we had data survived, giving a post-release survival rate of 100%. Following release, 6 individuals remained in surface waters for several hours to days, while 2 individuals immediately resumed normal diving behaviors. For the remaining sharks (n = 5), low tag transmission resolution precluded the detection of fine scale post-release behavior. The duration of initial depth-holding behavior was characterized using a break-point analysis of dive track variance, which suggests porbeagles exhibited a median post-release recovery period of 116 h (10th and 90th percentiles = 68.8 and 280.1 h) following capture and handling. Our preliminary study suggests immature porbeagles are resilient to capture and handling, although more data would provide stronger support for management recommendations.

KW - Porbeagle

KW - Shark

KW - Survival

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JO - Marine Ecology Progress Series

JF - Marine Ecology Progress Series

ER -

Preliminary estimate of post-release survival of immature porbeagles caught with rod-and-reel in the Northwest Atlantic Ocean

Abstract

Keywords

ASJC Scopus subject areas

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