...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology >Changes in reproduction for subtropical cutlassfish Trichiurus japonicus reflect variation in temperature and population demography
【24h】

Changes in reproduction for subtropical cutlassfish Trichiurus japonicus reflect variation in temperature and population demography

机译：亚热带cut鱼Trichiurus japonicus繁殖的变化反映了温度和种群人口统计学的变化

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

摘要

Many subtropical fishes spawn multiple batches throughout a year. To understand plasticity in their reproductive output, we evaluated variation in oocyte size and batch fecundity for an exploited subtropical cutlassfish, Trichiurus japonicus, between two temperature periods (warm vs. cold) on the NE and SW coasts of Taiwan, northwestern Pacific. Given greater temperature variability on NE compared with SW coast, we hypothesized greater changes between warm and cold periods in oocyte size and fecundity for T. japonicus on the NE coast. We found opposite changes in sizes of ripe oocytes between periods (cold > warm on the NE but warm > cold on the SW coast) but consistent patterns in batch fecundity between coasts (warm > cold). Furthermore, the between-period patterns in female length were consistent on both coasts (warm > cold). The differential between-period patterns in oocyte size were related to potential adaptive responses to differential thermal environments between coasts, whereas the changes in fecundity mainly involved plastic processes (e.g., changes in population demography or movement). Together, our findings suggest that variability of temperature and maternal effects underlie recruitment variability of T. japonicus.
机译：一年中许多亚热带鱼类会产卵多批。为了了解其生殖产量的可塑性，我们评估了西北太平洋台湾东北部和西南部沿海两个温度时期（温暖与寒冷）之间，一个被开发的亚热带cut鱼Trichiurus japonicus的卵母细胞大小和繁殖力的变化。考虑到东北部与西南沿海相比温度变化较大，我们假设东北沿海日本刺柏的卵母细胞大小和繁殖力在温暖和寒冷时期之间的变化更大。我们发现不同时期之间成熟卵母细胞大小的变化相反（冷> NE上温暖，而SW海岸上温暖>寒冷），但是海岸之间的批次产卵率一致（温暖>寒冷）。此外，在两个海岸上，雌性长度的不同时期模式是一致的（温暖>寒冷）。卵母细胞大小的不同时期之间的差异与对海岸之间不同热环境的潜在适应性反应有关，而繁殖力的变化主要涉及塑性过程（例如，人口人口统计学或运动的变化）。总之，我们的发现表明温度的变化和母性影响是日本血吸虫的募集变异性的基础。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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