• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Russian journal of marine biology >The Size-Age Structure, Growth, and Maturation of the Spotted Catfish Arius maculatus (Thunberg, 1792) (Siluriformes: Ariidae) from the Mekong Delta, Vietnam
【24h】

The Size-Age Structure, Growth, and Maturation of the Spotted Catfish Arius maculatus (Thunberg, 1792) (Siluriformes: Ariidae) from the Mekong Delta, Vietnam

机译：来自湄公河三角洲，越南的斑点鲶鱼Arius Maculatus（Thunberg，1792）（Siluriformes：Ariidae）的大小适年结构，生长和成熟

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

The size-age structure, growth, and maturation of the spotted catfish Arius maculatus (Thunberg, 1792) from the Hau River estuary, Mekong Delta, Vietnam, were studied for the first time. A total of 460 fish specimens collected from January to March 2019 were examined. The annuli on the otoliths were visualized; their formation may be related with the alternation of the dry and rainy seasons. The male to female ratio in the catches was 1 : 1.81. The proportion of males decreased in the older age groups. The maximum total body length of the females was 21.9 cm; for the males, it was 23.7 cm. The maximum recorded age of females in catches was 7+; for males it was 8+. No inter-gender differences in growth were detected. The parameters of the von Bertalanffy equation for both sexes according to empirical data were as follows: L-infinity = 28.3 cm; k = 0.15/yr; t(0) = -1.03 yr; growth performance index, phi = 2.08. The coefficients of the relationship between mass and length were as follows: a = 0.0054; b = 3.22. Maturation began at a body length of 13 cm at an age of 3 yr and ended at a body length of 18 cm at an age of 6 yr; 50% of the individuals became mature at a body length of 15 cm at an age of 4 yr. No inter-gender differences in the timing of maturation were found. A. maculatus from the Mekong Delta is characterized by a low growth rate compared to other populations, which may be associated with the labile habitat conditions in the estuary zone.
机译：第一次研究了来自Hau河河口的斑点鲶鱼Arius Maculature（Thunberg，1792）的大小的结构，增长和成熟，越南湄公河河口湄公河河口。研究了2019年1月至3月收集的460条鱼类。偏离偏乐力的含量被可视化;它们的形成可能与干燥和雨季的交替有关。捕获中的男性与女性比例为1：1.81。年龄较大的群体中雄性的比例降低。女性的最大总体长度为21.9厘米;对于雄性，它是23.7厘米。捕获中的女性的最大录制年龄是7+;对于男性，它是8+。没有检测到增长的性别间差异。根据经验数据的两性的Von Bertalanffy方程的参数如下：L-Infinity = 28.3厘米; k = 0.15 / yr; t（0）= -1.03 yr;生长性能指数，PHI = 2.08。质量和长度之间的关系系数如下：a = 0.0054; b = 3.22。成熟在13厘米的体长为3厘米的体长，并且在6岁的18厘米的体长以18厘米结束; 50％的人在4岁的年龄为15厘米的体长成熟。未发现成熟时期的性别间差异。 A.来自湄公河三角洲的Maculatus的特征在于与其他人群相比的低增长率，这可能与河口区的不稳定栖息地条件相关。

著录项

  • 来源
    《Russian journal of marine biology》 |2021年第1期|56-63|共8页
  • 作者

    Kutsyn D. N.; Ablyazov E. R.; Truong Ba Hai; Cu Nguyen Dinh;

  • 作者单位

    Russian Acad Sci Kovalevsky Inst Biol Southern Seas Sevastopol 299011 Russia|Russian Acad Sci Severtsov Inst Ecol & Evolut Moscow 119071 Russia|Joint Vietnamese Russian Trop Res & Technol Ctr Southern Dept Ho Chi Minh City Vietnam;

    Russian Acad Sci Kovalevsky Inst Biol Southern Seas Sevastopol 299011 Russia|Russian Acad Sci Severtsov Inst Ecol & Evolut Moscow 119071 Russia|Joint Vietnamese Russian Trop Res & Technol Ctr Southern Dept Ho Chi Minh City Vietnam;

    Joint Vietnamese Russian Trop Res & Technol Ctr Southern Dept Ho Chi Minh City Vietnam;

    Joint Vietnamese Russian Trop Res & Technol Ctr Southern Dept Ho Chi Minh City Vietnam;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spotted catfish; Arius maculatus; age; growth; maturation; Mekong River; delta; estuary;

    机译：斑点鲶鱼;arius maculatus;年龄;增长;成熟;湄公河;三角洲;河口;

相似文献

  • 外文文献
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