Dispersal of grouper larvae drives local resource sharing in a coral reef fishery

Almany, Glenn R., Hamilton, Richard J., Bode, Michael, Matawai, Manuai, Potuku, Tapas, Saenz-Agudelo, Pablo, Planes, Serge, Berumen, Michael L., Rhodes, Kevin L., Thorrold, Simon R., Russ, Garry R., and Jones, Geoffrey P. (2013) Dispersal of grouper larvae drives local resource sharing in a coral reef fishery. Current Biology, 23 (7). pp. 626-630.

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Abstract

In many tropical nations, fisheries management requires a community-based approach because small customary marine tenure areas define the spatial scale of management. However, the fate of larvae originating from a community’s tenure is unknown, and thus the degree to which a community can expect their management actions to replenish the fisheries within their tenure is unclear [2, 3]. Furthermore, whether and how much larval dispersal links tenure areas can provide a strong basis for cooperative management [4, 5]. Using genetic parentage analysis, we measured larval dispersal from a single, managed spawning aggregation of squaretail coral grouper (Plectropomus areolatus) and determined its contribution to fisheries replenishment within five community tenure areas up to 33 km from the aggregation at Manus Island, Papua New Guinea. Within the community tenure area containing the aggregation, 17%–25% of juveniles were produced by the aggregation. In four adjacent tenure areas, 6%–17% of juveniles were from the aggregation. Larval dispersal kernels predict that 50% of larvae settled within 14 km of the aggregation. These results strongly suggest that both local and cooperative management actions can provide fisheries benefits to communities over small spatial scales.

Item ID: 26455
Item Type: Article (Refereed Research - C1)
ISSN: 1879-0445
Funders: Australian Research Council (ARC)
Date Deposited: 19 Apr 2013 00:02
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 25%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060207 Population Ecology @ 25%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures @ 50%
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