...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES journal of marine science: International Council for the Exploration of the Sea journal of marine science >Behavioural responses of wild anadromous Arctic char experimentally infested in situ with salmon lice
【24h】

Behavioural responses of wild anadromous Arctic char experimentally infested in situ with salmon lice

机译：Behavioural responses of wild anadromous Arctic char experimentally infested in situ with salmon lice

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

Salmon lice can impact the marine behaviour, growth, and survival of salmonids, but little is known about their effects on Arctic char.We present behavioural responses from the first dose-response experiment with wild anadromous Arctic char (n = 50) infested in situ with salmon lice (0.0-1.2 lice g~(?1) fish) in an area with low natural infestations. Infested fish spent less time at sea (mean ± SD = 22 ± 6 d) than non-infested fish (mean ± SD = 33 ± 5 d), and a significant dose response was evident, with even very low louse burdens (<0.05 lice g~(?1) fish) reducing the marine feeding time. Furthermore, a negative correlation was present between time spent close to their native watercourse and parasite burden, suggesting that salmon lice influence the marine habitat use of Arctic char. No impact of salmon lice was evident on the return probability, i.e. marine survival. However, the presence of louse-induced mortality cannot be excluded as the modest sample size was only sufficient to detect extreme effects. Reduced marine feeding time and altered marine habitat use will likely have substantial negative effects on growth and fitness, suggesting that impacts of salmon lice must be considered in the conservation of anadromous Arctic char.

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