Evidences of Seasonal Aggregations and Breaching Behaviour of Blacktip (Carcharhinus limbatus) and Spinner (C. brevipinna) Sharks in a Southwest Atlantic Marine Protected Area

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Aquatic Conservation-Marine and Freshwater Ecosystems Pub Date : 2025-05-07 DOI:10.1002/aqc.70153

Fernanda Andreoli Rolim, Pedro Furtado Costa Rodrigues, Otto Bismarck Fazzano Gadig, Fábio dos Santos Motta, Marco Antonio Light Slerca, Nathan Lagares Franco Araujo, Leonardo Mitrano Neves

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引用次数: 0

Abstract

This study indicates a seasonal aggregation behaviour in Blacktip (Carcharhinus limbatus) and Spinner (C. brevipinna) sharks over 6 years of data in Ilha Grande Bay, a warm temperate bay in Rio de Janeiro, Brazil. Observations from visual surveys, drone footage and Baited Remote Underwater Video (BRUV) deployments revealed mixed-species aggregations, reaching a maximum of 113 individuals, and recorded the first instances of breaching behaviour of sharks in the Southwest Atlantic. These aggregations occurred seasonally during austral autumn and winter in a shallow cove near a nuclear power plant, partially within a no-take marine protected area. Understanding these behaviours provides valuable insights for effective management and conservation strategies in the region.

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西南大西洋海洋保护区黑鳍鲨（Carcharhinus limbatus）和旋鲨（C. brevipinna）季节性聚集和越界行为的证据

这项研究表明，在巴西里约热内卢温暖的海湾Ilha Grande湾，黑鳍鲨（Carcharhinus limbatus）和长鳍鲨（C. brevipinna）在6年的数据中存在季节性聚集行为。通过视觉调查、无人机镜头和带诱饵的远程水下视频（BRUV）部署的观察显示，混合物种聚集在一起，最多达到113条，并记录了西南大西洋鲨鱼破坏行为的第一例。这些聚集季节性地发生在南部秋冬季节，在核电站附近的一个浅湾，部分在禁止捕捞的海洋保护区内。了解这些行为可以为该地区的有效管理和保护策略提供有价值的见解。

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来源期刊

Aquatic Conservation-Marine and Freshwater Ecosystems 环境科学-海洋与淡水生物学

CiteScore

5.50

自引率

4.20%

发文量

143

审稿时长

18-36 weeks

期刊介绍： Aquatic Conservation: Marine and Freshwater Ecosystems is an international journal dedicated to publishing original papers that relate specifically to freshwater, brackish or marine habitats and encouraging work that spans these ecosystems. This journal provides a forum in which all aspects of the conservation of aquatic biological resources can be presented and discussed, enabling greater cooperation and efficiency in solving problems in aquatic resource conservation.