• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >hybridization behaviour between two common European cyprinid fish species - silver bream Blicca bjoerkna and common bream Abramis brama - in a controlled environment
【2h】

hybridization behaviour between two common European cyprinid fish species - silver bream Blicca bjoerkna and common bream Abramis brama - in a controlled environment

机译：在受控环境中两种欧洲鲤鱼类的杂交行为-银鲷Blicca bjoerkna和普通鲷Abramis brama-

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The egg release–mating comparison, heterospecific matings and mating success under two hybridizationconditions – (i) mixing one sex per species and (ii) mixing both sexes from each species – were investigatedto determine whether silver bream Blicca bjoerkna and common bream Abramis brama can hybridize innature.The results revealed that non-matings in hybridization experiments of silver bream females × commonbream males can be explained by territorial and aggressiveness activities observed in common bream. Incommon bream females × silver bream males, heterospecific matings were observed but their numberswere signifi cantly lower than the spawning numbers, and in this experiment, a female mated with one tofour heterospecifi c males. In mixing both sexes from both species, similar spawning – mating numberswere observed but heterospecific matings accounted for only 27% of the total matings, with 24% accountingfor heterospecifi c matings between common bream females and silver bream males, directly or byopportunism. Mating success was characterized by the occurrence of fertilized eggs after matings.Natural hybridization occurred preferentially between common bream females and silver bream males.
机译：研究了两种杂交条件下（i）每个物种混合一种性别和（ii）每个物种的两种性别混合的卵释放-交配比较，异种交配和交配成功率，以确定银鲷Blicca bjoerkna和普通鲷Abramis Brama是否可以杂交结果表明，银鲷雌性×普通鲷雄性杂交实验中的非交配可以用常见鲷中观察到的领土和侵略活动来解释。鲷和银鲷雄性不同，观察到异种交配，但数量明显低于产卵数，在本实验中，雌性与一到四只异种雄性交配。在混合两个物种的性别时，观察到相似的产卵-交配数量，但异种交配仅占总交配的27％，其中24％占普通鱼和银雄鱼直接或通过机会主义的异种交配。交配成功的特征是交配后受精卵的出现。自然杂交优先发生在普通鲷鱼雌性和银鲷鱼雄性之间。

著录项

相似文献

  • 外文文献
代理获取

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