Temporal and spatial closures are often used to manage harvest by trawl fisheries. Trawl closures implemented to benefit a particular species may also benefit other species, but these indirect effects are rarely quantified. Using the New South Wales (Australia) Ocean Trawl Fishery as a case study, the potential unintended effects of trawl closures designed to protect juvenile eastern king prawn were explored for other quota managed Sillaginidae within the fishery (stout whiting Sillago robusta and eastern school whiting Sillago flindersii). Both species of whiting were more abundant within closed areas than adjacent areas, and spawning-sized stout whiting were proportionally more abundant within closed areas. Thus, closures implemented to protect prawns also provided protection for exploited whiting species, including spawning-sized individuals, enhancing their overall impact on the fishery. Spatial management of trawl fisheries elsewhere in the world may also similarly benefit other exploited species.

中文翻译：

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对虾渔业空间管理对澳​​大利亚东部其他目标鱼类的影响

时间和空间关闭通常用于管理拖网渔业的收获。为使特定物种受益而实施的拖网关闭也可能使其他物种受益，但这些间接影响很少被量化。以新南威尔士州（澳大利亚）远洋拖网渔业为例，探讨了为保护东部帝王虾幼体而设计的拖网关闭对渔业中其他配额管理的 Sillaginidae（粗壮鳕鱼Sillago robusta和东部学校鳕鱼Sillago ）的潜在意外影响弗林德西）。这两种鳕鱼在封闭区域内比相邻区域更丰富，产卵大小的粗壮鳕鱼在封闭区域内按比例更丰富。因此，为保护对虾而实施的关闭也为被开发的鳕鱼物种提供了保护，包括产卵大小的个体，增强了它们对渔业的整体影响。世界其他地方拖网渔业的空间管理也可能同样有利于其他被开发的物种。