Population Connectivity of the Highly Migratory Shortfin Mako (Isurus oxyrinchus Rafinesque 1810) and Implications for Management in the Southern Hemisphere

Corrigan, Shannon; Lowther, Andrew D.; Beheregaray, Luciano B.; Bruce, Barry D.; Cliff, Geremy; Duffy, Clinton A.; Foulis, Alan; Francis, Malcolm P.; Goldsworthy, Simon D.; Hyde, John R.; Jabado, Rima W.; Kacev, Dovi; Marshall, Lindsay; Mucientes, Gonzalo R.; Naylor, Gavin J. P.; Pepperell, Julian G.; Queiroz, Nuno; White, William T.; Wintner, Sabine P.; Rogers, Paul J.

doi:10.3389/fevo.2018.00187

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Population Connectivity of the Highly Migratory Shortfin Mako (Isurus oxyrinchus Rafinesque 1810) and Implications for Management in the Southern Hemisphere

2018
By Corrigan, Shannon ; Lowther, Andrew D. ; Beheregaray, Luciano B. ; ...
Source: Frontiers in Ecology and Evolution, 6

[PDF-3.10 MB]

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Journal Title:

Frontiers in Ecology and Evolution
Personal Author:

Corrigan, Shannon ; Lowther, Andrew D. ; Beheregaray, Luciano B. ; Bruce, Barry D. ; Cliff, Geremy ; ... More +

Corrigan, Shannon ; Lowther, Andrew D. ; Beheregaray, Luciano B. ; Bruce, Barry D. ; Cliff, Geremy ; Duffy, Clinton A. ; Foulis, Alan ; Francis, Malcolm P. ; Goldsworthy, Simon D. ; Hyde, John R. ; Jabado, Rima W. ; Kacev, Dovi ; Marshall, Lindsay ; Mucientes, Gonzalo R. ; Naylor, Gavin J. P. ; Pepperell, Julian G. ; Queiroz, Nuno ; White, William T. ; Wintner, Sabine P. ; Rogers, Paul J. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) Less -
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In this paper we combine analyses of satellite telemetry and molecular data to investigate spatial connectivity and genetic structure among populations of shortfin mako (Isurus oxyrinchus) in and around Australian waters, where this species is taken in recreational and commercial fisheries. Mitochondrial DNA data suggest matrilineal substructure across hemispheres, while nuclear DNA data indicate shortfin mako may constitute a globally panmictic population. There was generally high genetic connectivity within Australian waters. Assessing genetic connectivity across the Indian Ocean basin, as well as the extent that shortfin mako exhibit sex biases in dispersal patterns would benefit from future improved sampling of adult size classes, particularly of individuals from the eastern Indian Ocean. Telemetry data indicated that Australasian mako are indeed highly migratory and frequently make long-distance movements. However, individuals also exhibit fidelity to relatively small geographic areas for extended periods. Together these patterns suggest that shortfin mako populations may be genetically homogenous across large geographical areas as a consequence of few reproductively active migrants, although spatial partitioning exists. Given that connectivity appears to occur at different scales, management at both the national and regional levels seems most appropriate.
Keywords:

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Ecology Ecology, Evolution, Behavior And Systematics
Source:

Frontiers in Ecology and Evolution, 6
DOI:

https://doi.org/10.3389/fevo.2018.00187
ISSN:

2296-701X
Format:

PDF
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Frontiers Media SA
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha-512:0aa7b096068c57607cec55920330b8af4782e44f37f2e074e1b27f90b72674cad53804c39e2d8dc8ce8a8b56d791108809ceb024150c4969200df1282cf0a8a3
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Population Connectivity of the Highly Migratory Shortfin Mako (Isurus oxyrinchus Rafinesque 1810) and Implications for Management in the Southern Hemisphere

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