• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Biological Control of Weeds >Ten years after the release of the water hyacinth mirid Eccritotarsus catarinensis in South Africa: what have we learnt?
【24h】

Ten years after the release of the water hyacinth mirid Eccritotarsus catarinensis in South Africa: what have we learnt?

机译：在南非释放水葫芦麦田麦田麦体莫里达甲虫的释放后十年：我们学到了什么？

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Water hyacinth, Eichhornia crassipes (Mart.) Solms, is the worst aquatic weed in South Africa, and biological control offers the most sustainable control option. The mirid, Eccritotarsus catarinensis (Carvalho) (Hemiptera: Miridae), was released against water hyacinth in South Africa in 1996 and shown to be damaging to the plant and host-specific within the Pontederiacae. Feeding, oviposition and nymphal development were recorded on pickerelweed, Pontederia cordata L., an important aquatic plant in North America but a potential weed in South Africa. The release of this agent allowed us to test in the field that pickerelweed was not part of the mirid's realized host range. The agent subsequently established at 15 sites around South Africa, includingthose where climatic modeling had indicated that it would not due to low winter temperatures, calling into question the usefulness of climate-matching techniques in the absence of microclimate and behavioural data. Hypertrophic nutrient conditions also reduced the effectiveness of E. catarinensis due to rapid proliferation of the plant, but the mirid reduced both the vigour and competitive ability of water hyacinth in mesotrophic and eutrophic water. E. catarinensis is emerging as an effective agent inareas of medium to low-nutrient status with a warm climate and should be considered for release in other areas of the world, particularly Africa, where few Pontederiaceae occur. This programme shows the value of considering fundamental vs realized host ranges but suggests that more data are needed to increase confidence in climate compatibility predictions.
机译：水葫芦，凤眼莲（沃尔玛）莲，是南非最糟糕的水草，和生物防治提供了最可持续控制选项。该mirid，Eccritotarsus catarinensis（卡瓦略）（半翅目：盲蝽科），在1996年发布了针对水葫芦在南非和证明会损害到Pontederiacae内的植物和宿主特异性。喂食，产卵和若虫记录在pickerelweed，梭鱼草属，一个重要的水生植物在北美，但在南非的一个潜在的杂草。该剂的释放使我们能够测试的字段pickerelweed不是mirid的实现宿主范围的一部分。代理随后在周围南非15个站点建立，includingthose那里的气候模型已经表示，它不会由于冬季气温低，质疑在没有气候和行为数据的气候匹配技术的实用性。肥厚性营养条件也减少E. catarinensis的有效性归因于植物的迅速增殖，但mirid减小两者活力和水葫芦在营养型和富营养化水竞争能力。 E. catarinensis正在成为媒体的有效代理inareas到低营养状态气候温暖，并应考虑在世界其他地区，特别是非洲，少数雨久花发生在哪里释放。该方案显示考虑基本实现VS主机范围的值，但表明需要更多的数据来提高气候预测的兼容性信心。

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