This study focuses on the KwaZulu-Natal deepwater crustacean trawl fishery located off the east coast of South Africa. It investigates the spatiotemporal changes in fishing effort and catch per unit effort of three target species of knife prawns (Haliporoides triarthrus), African langoustine (Metanephrops mozambicus) and pink geryon (Chaceon macphersoni) using a space–time cube and hotspot analysis in ArcGIS Pro. This analysis shows the contraction of the fishing effort over time and the confining of the most productive localities to a relatively small area directly off the vessels’ home port of Durban. This provides invaluable information on a fishery that has not been subjected to any formal stock assessments and hopefully inspires other countries in the western Indian Ocean with similar data limitations to produce their own analyses of their trawl grounds.

这项研究的重点是位于南非东海岸的夸祖鲁-纳塔尔省深水甲壳类拖网渔业。它调查了三种目标种类的刀虾（Haliporoides triarthrus），非洲海螯虾（Metanephrops mozambicus）和粉红geryon（Chaceon macphersoni）的捕捞力和单位捕捞量的时空变化。）在ArcGIS Pro中使用时空立方体和热点分析。这项分析表明，随着时间的推移，捕捞工作量减少了，最有生产力的地区被限制在直接靠近船只德班港的相对较小的区域。这提供了关于未经任何正式种群评估的渔业的宝贵信息，并希望激发印度洋西部其他国家的类似数据限制，以对自己的拖网进行分析。