...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean & coastal management >Endangered whale sharks in southeastern Brazil: Records and management issues
【24h】

Endangered whale sharks in southeastern Brazil: Records and management issues

机译：巴西东南部的濒临灭绝的鲸鲨：记录和管理问题

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The whale shark, Rhincodon typus, is an endangered fish species for which data in the South Atlantic Ocean are still scarce. This study presents and compares all the known records for this species in southeastern Brazil and recommends strategies to minimize the anthropic influence on its well-being locally and to enhance the database of records. Thirty-eight records were obtained from 1983 to 2020, including sightings (65.8%, n = 25), strandings (21.1%, n = 8), incidental captures in fisheries (10.5%, n = 4), and an incidental capture event followed by sighting (2.6%, n = 1). The results highlight the Rio de Janeiro state coast as an important site for R. typus in southeastern Brazil, where its presence is related to an upwelling zone (22 degrees S-23 degrees S; 41 degrees W-42 degrees W) and warmer sea surface temperature. The highest number of occurrences of R. typus on the Rio de Janeiro state coast was from February to May; this may be related to the seasonal availability of prey or even to the regulation of prey availability by sea surface temperature. Another feature that may attract R. typus individuals to this region is the offshore platforms positioned along the Campos Basin. The records do not indicate that the coastal waters from Rio de Janeiro state have potential for seasonal tourism activities based on R. typus presence. Although the feeding behavior of R. typus was not explicit from our records, we might infer that the coastal waters between 22 degrees S and 23 degrees S and 41 degrees W-42 degrees W are a feeding site in the southwestern Atlantic Ocean.
机译：Whale Shark，Rhincodon Typus是一种濒临灭绝的鱼类，南大西洋的数据仍然稀缺。本研究提出并比较了巴西东南部的这种物种的所有已知记录，并建议最大限度地减少当地的人类影响的人类影响，并加强记录数据库。从1983年到2020年获得了三十八条记录，包括瞄准（65.8％，N = 25），股骨股（21.1％，N = 8），渔业偶然捕获（10.5％，n = 4）和偶然的捕获事件然后瞄准（2.6％，n = 1）。结果突出了里约热内卢国家海岸作为巴西东南部的R. Temus的重要网站，其存在与上升区（22度S-23摄氏度; 41°W-42°W）和较温暖的海洋表面温度。 Rio de Janeiro国家海岸的R. Tepus的出现数量最高为2月至5月;这可能与海上温度捕食的季节性可用性或甚至对猎物可用性的调节有关。可能吸引R. Typus个人的另一个功能是沿着坎波斯盆地定位的海上平台。记录并不表明来自里约热内卢州的沿海水域有潜力基于R. Typus存在的季节性旅游活动。虽然R. typus的饲养行为没有明确我们的记录，但我们可能会推断22度和23摄氏度之间的沿海水域和41摄氏度之间的沿海水域是西南大西洋的饲养场。

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号