• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biocontrol Science and Technology >Persistence of the flowerbud weevil Anthonomus santacruzi in optimal versus marginal areas: implications for the biological control of the invasive tree Solanum mauritianum in South Africa
【24h】

Persistence of the flowerbud weevil Anthonomus santacruzi in optimal versus marginal areas: implications for the biological control of the invasive tree Solanum mauritianum in South Africa

机译：Flowerbud Weevil Anthonomus Santacruzi在最佳与边缘地区的持久性：对南非侵入性树Solanum Mauritianum的生物控制的影响

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

Anthonomus santacruzi Hustache (Coleoptera: Curculionidae) was released in South Africa to offset the extensive reproductive output of the invasive tree Solanum mauritianum Scopoli (Solanaceae). Widespread establishment has occurred predominantly in the coastal areas of KwaZulu-Natal province, with limited success in higher-altitude inland areas. Irrespective of location, populations exhibit peaks in the austral autumn and decline during winter. In this study, we evaluated the persistence of A.?santacruzi populations in climatically-optimal coastal areas versus climatically-marginal inland areas. The weevil’s pre-?and post-winter abundance was surveyed at six coastal and six inland sites during 2018, and compared between areas and seasons. The 2018 pre-winter data were also compared to 2016 pre-winter data collected at the same sites. During 2018, pre-?and post-winter numbers were six times and 22 times higher, respectively, at optimal sites than at marginal sites, with substantial winter declines at all sites. Post-winter weevil numbers at optimal sites were significantly higher than pre-winter numbers at marginal sites. Pre-winter numbers at optimal sites were not significantly different between 2016 and 2018, but at marginal sites were significantly lower in 2018. Inflorescences of S.?mauritianum at marginal sites contained significantly more floral material and fruit than those at optimal sites, during both seasons in 2018. Significant negative correlations between A.?santacruzi numbers and floral/fruit production suggest some impact on the reproductive output of S.?mauritianum. Since A.?santacruzi populations are barely persisting in marginal areas, releases in other South African provinces should target locations that are below 300?m in altitude.
机译：南非南非释放了南非南非苏克兰氏菌（Coleoptera），以抵消侵入性树Solanum Mauritianum scopoli（solanaceae）的广泛繁殖产出。普祖鲁 - 纳塔尔省沿海地区主要发生广泛的成立，在内陆地区的高海拔地区取得有限。无论地点如何，人口都展示了澳大利亚秋季的山峰，在冬季下滑。在这项研究中，我们评估了A.? antacruzi人群的持续性，在最佳的沿海地区与上升的内陆地区。 2018年六个沿海和六个内陆地点，威内维尔的预先接受了冬季和冬季丰富，并在地区和季节之间进行了比较。 2018年冬季前数据也将与2016年在同一地点收集的冬季前数据进行比较。 2018年，在最佳场地，冬季冬季数量分别为六次，分别比在边缘地点的最佳场地，在所有地点都有很大的冬季下降。最佳地点的冬季后象鼻符号明显高于边缘地点的冬季前数量。 2016年和2018年最佳地点的冬季数量在2016年和2018年之间没有显着差异，但在2018年的边缘地点明显较低。在两者期间，在边缘部位的患者在边缘地点的花序含有明显更多的花卉材料和水果。 2018年季节。A.? antacruzi数字和花卉/水果生产之间的显着负相关意见对S.Mauritianum的生殖产出产生了一些影响。由于A.? anantacruzi人群在边缘地区几乎没有持续存在，因此其他南非省份的释放应在海拔高度低于300？M以下的位置。

著录项

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