• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the World Aquaculture Society >Spawning frequency analysis of wild and pond-reared Pacific white shrimp Penaeus vannamei broodstock under large-scale hatchery conditions.
【24h】

Spawning frequency analysis of wild and pond-reared Pacific white shrimp Penaeus vannamei broodstock under large-scale hatchery conditions.

机译：大型孵化场条件下野生和池塘养殖的太平洋白虾南美白对虾亲鱼的产卵频率分析。

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

470 pond-reared and 237 wild-caught individually tagged females were stocked with males of the same origin in 10 maturation tanks in a commercial hatchery in Mexico. The pond-reared broodstock were the 2nd generation of captive shrimp produced fromwild spawners and had been selected for high body weight. Mature females with an attached spermatophore were transferred to individual tanks for spawning and were then returned to the maturation tank. Reproductive performance was recorded over～80 days.Wild shrimp had higher mating and spawning frequencies than pond-reared broodstock (1.8 and 1.3 matings and 1.2 and 0.8 viable spawns per female per month respectively; P<0.05). The number of nauplii per spawn was higher for wild than pond-reared shrimp(78 600 and 65 100 respectively; P<0.01), but fertilization and hatching rates were higher for pond-reared spawners. 88% of wild shrimps and 74% of pond-reared shrimps mated at least once, and 11 and 4% respectively mated more than 10 times. Spawn quality (fertilization and hatching rates, percentage of viable spawns and number of nauplii) did not decline substantially in consecutive matings.
机译：在墨西哥的一个商业孵化场中，在10个成熟鱼缸中放养了470只池塘饲养的动物和237只野外捕获的单独标记的雌性，其中有相同来源的雄性。池塘养殖的亲虾是从野生产卵场繁殖的第二代圈养虾，已被选为高体重的。将附有精子的成熟雌性转移到单独的水箱中产卵，然后返回到成熟水箱中。记录了约80天的繁殖性能。野虾的交配和产卵频率高于池塘养育的亲虾（每个雌性每月的交配数分别为1.8和1.3，活体产卵为1.2和0.8; P <0.05）。野生的每只产卵无节幼体数量比池塘养的对虾高（分别为78 600和65 100; P <0.01），但是池塘养的产卵的受精率和孵化率更高。 88％的野生虾和74％的池塘养虾至少交配过一次，分别有11％和4％交配超过10次。在连续交配中，产卵质量（受精和孵化率，活产卵百分比和无节幼体数量）没有显着下降。

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