...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Folia Zoologica: International Journal of Vertebratology >Potential factors affecting the body weight of bluegill Lepomis macrochirus in Lake Biwa, Japan
【24h】

Potential factors affecting the body weight of bluegill Lepomis macrochirus in Lake Biwa, Japan

机译：影响日本琵琶湖大g Lepomis macrochirus体重的潜在因素

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

Lake Biwa consists of a large, deep north basin and a small, shallow south basin, and the body weights of bluegill Lepomis macrochirus in the north basin tend to exceed those in the south basin. To elucidate the cause of this phenomenon, the physical characteristics of the fish in the two basins were compared. The fish in the north basin had larger gonads and stomachs than did the fish in the south basin, but the contributions of these organs to the body weight were very small. The body weights of the fish in the north basin still exceeded those in the south basin after the subtraction of the weights of the gonad and stomach. Bluegill in the north basin had deeper bodies than those in the south basin. The heavier body tissues of bluegill in the north basin appear to be an adaptive response to the colder environment. Given the flourishing of largemouth bass Micropterus salmoides in the littoral zone in the north basin, the deeper bodies of bluegill there may contribute to their increased survival rate by reducing their vulnerability to prédation by largemouth bass.
机译：琵琶湖由一个大的深北部盆地和一个小而浅的南部盆地组成，北部basin的蓝g Lepomis macrochirus的体重往往超过南部盆地的体重。为了阐明此现象的原因，比较了两个盆地中鱼的物理特征。北部盆地的鱼类的性腺和胃比南部盆地的鱼类大，但这些器官对体重的贡献很小。减去性腺和胃的重量后，北部盆地的鱼的体重仍然超过南部盆地的鱼的体重。北部盆地的蓝g的身体比南部盆地的深。北部盆地的蓝body较重的身体组织似乎是对较冷环境的适应性反应。鉴于北部盆地沿岸地区大嘴鲈的繁盛，Micropterus salmoides的存在，那里较深的蓝g体可能会通过降低它们对大嘴鲈的p杀的脆弱性来提高生存率。

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