• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Long term spatial and temporal variability in catches of common spiny lobster Palinurus elephas (Fabricius, 1787) in Corsica (NW Mediterranean): fisheries trends, biological trends or both?
【2h】

Long term spatial and temporal variability in catches of common spiny lobster Palinurus elephas (Fabricius, 1787) in Corsica (NW Mediterranean): fisheries trends, biological trends or both?

机译：在科西嘉岛（地中海西北部），常见的多刺龙虾Palinurus elephas（Fabricius，1787）的渔获量的长期时空变化：渔业趋势，生物趋势或两者兼而有之？

页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The small-scale fishing fleet of Corsica (France, NW Mediterranean) is mostly composed of small artisanal boats. The common spiny lobster, Palinurus elephas, is the most valuable of all caught species. As a result, it is the main target of most fishermen during the 7-months fishing season. Populations of this species seem to decrease since the 1950's. The aim of this study was to understand if this decline could be linked with overfishing, or if other biological, ecological or climatic factors could explain this population drop. To achieve this goal, we combined 1) a meta-analysis of all data concerning fishing effort and captures in published and grey literature and 2) an on-board monitoring program that started in 2004. Using obtained data, we followed fleet structure, fishing effort and captures evolution from 1950 to 2011. Our results point out an important capture decrease during the 20th century. This trend started during the 1950’s and 1960’s, when trammel nets replaced traditional wood traps. A micro-regional analysis revealed that exploitation intensity widely varied among different areas around the island. Moreover, landings and catch rates showed important spatial and temporal variations. This could be caused by changes in recruitment rates. However, recruitment processes of this species are still poorly understood. Improving our knowledge of common spiny lobster life cycle will likely lead to a more comprehensive and efficient assessment of Corsican stocks of this species.
机译：科西嘉岛的小型捕鱼船队（法国，西北地中海）主要由小型手工船组成。常见的多刺龙虾，细鳞龙虾，是所有捕获物种中最有价值的。因此，它是七个月捕鱼季节中大多数渔民的主要目标。自1950年代以来，该物种的种群似乎在减少。这项研究的目的是了解这种下降是否可能与过度捕捞有关，或者其他生物学，生态或气候因素是否可以解释这一种群下降的原因。为了实现这一目标，我们结合了1）对所有有关捕捞努力和捕捞数据的荟萃分析，并结合了已发表的文献和灰色文献，以及2）始于2004年的机载监测程序。努力并捕获了从1950年到2011年的演变。我们的结果指出，在20世纪，捕获量大大减少了。这种趋势始于1950年代和1960年代，当时特拉梅尔网取代了传统的木制陷阱。微观区域分析显示，岛上不同地区的开采强度差异很大。此外，着陆和捕获率显示出重要的时空变化。这可能是由于招聘率的变化而引起的。但是，对该物种的募集过程仍然知之甚少。增进我们对常见多刺龙虾生命周期的了解，可能会导致对科西嘉岛该物种的种群进行更全面和有效的评估。

著录项

相似文献

  • 外文文献

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