Dispersal of Grouper Larvae Drives Local Resource Sharing in a Coral Reef Fishery
Dispersal of Grouper Larvae Drives Local Resource Sharing in a Coral Reef Fishery
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DOI：
10.1016/j.cub.2013.03.006
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发表时间：
2013-04-08
期刊：
影响因子：
9.2
通讯作者：
Jones, Geoffrey P.
中科院分区：
文献类型：
--
作者：
Almany, Glenn R.;Hamilton, Richard J.;Jones, Geoffrey P.
在许多热带国家，渔业管理需要以社区为基础的方法，因为小的习惯海洋保有权区域定义了管理的空间规模[1]。然而，来自社区保有权的幼虫的命运是未知的，因此，社区可以在多大程度上期望他们的管理行动在其保有期内补充渔业[2，3]。此外，是否以及在多大程度上幼虫扩散联系保有权区域可以为合作管理提供强有力的基础[4，5]。利用遗传亲子关系分析，我们测量了方尾珊瑚石斑鱼(Plectroomus Areolatus)单个管理产卵聚集的幼体扩散，并在距离巴布亚新几内亚马努斯岛聚集33公里的五个社区保有区内确定了其对渔业补充的贡献。在包含聚集的社区保有权区域内，17%-25%的幼虫是由聚集产生的。在邻近的四个保留区，6%-17%的幼虫来自聚集区。幼虫扩散核预测，50%的幼虫在聚集的14公里内定居。这些结果有力地表明，地方和合作社管理行动都可以在小空间范围内为社区提供渔业利益。
In many tropical nations, fisheries management requires a community-based approach because small customary marine tenure areas define the spatial scale of management [1]. 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.