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首页> 外文期刊>African Entomology >Are native predators likely to influence the establishment and persistence of Anthonomus santacruzi (Curculionidae), a biological control agent of Solanum mauritianum (Solanaceae) in South Africa?
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Are native predators likely to influence the establishment and persistence of Anthonomus santacruzi (Curculionidae), a biological control agent of Solanum mauritianum (Solanaceae) in South Africa?

机译：当地掠食者是否有可能影响南非茄子（Solanumae）（茄科）的生物防治剂Anthonomus santacruzi（Curculionidae）的建立和持久性？

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The arthropod taxa associated with S. mauritianum inflorescences at two coastal sites and two inland sites in Kwazulu-Natal, South Africa were studied. A. santacruzi was found only at one of these 4 release sites (Umkomaas). Sampling was conducted in February (summer), May (autumn), July (winter) and October (spring) 2010. Specimens classified under Araneae, Acari, Coleoptera, Hemiptera, Hymenoptera and Thysanoptera were obtained from inflorescences. The most represented taxa, all of which potentially included predatory species, were Thysanoptera (present on 31% of the inflorescences), Acari (21%), Miridae (18%), Araneae (15%) and Formicidae (10%). Among the arthropods, species under Acari (1.6 individuals per inflorescence), Thysanoptera (1.2), Miridae (0.3), Formicidae (0.2) and Araneae (0.2) were the most abundant. Herbivorous species (Coleoptera and Hemiptera) were present on <10% of the inflorescences. Except for mites, which were more abundant in the autumn, all the arthropods had the highest population densities in the summer, and generally lower densities in the winter and spring. The population densities of mirids and thrips were higher at the inland sites than at the coastal sites. The overall incidence and abundance of potential predators on the inflorescences of S. mauritianum were low and insufficient to negatively affect populations of A. santacruzi during the initial stages of establishment.
机译：在南非夸祖鲁-纳塔尔省的两个沿海地点和两个内陆地点，研究了与S. mauritianum花序相关的节肢动物类群。仅在这4个释放地点之一（Umkomaas）中发现了A. santacruzi。在2010年2月（夏季），5月（秋季），7月（冬季）和10月（春季）进行采样。从花序中获得了分为Araneae，Acari，鞘翅目，半翅目，膜翅目和Th翅目的标本。最有代表性的分类单元是Th翅目（占31％的花序），Acari（21％），Miridae（18％），Araneae（15％）和Formicidae（10％），它们都可能包括掠食性物种。在节肢动物中，Acari（每个花序1.6个个体），Thysanoptera（1.2），Miridae（0.3），Formicidae（0.2）和Araneae（0.2）下的物种最多。草食种类（鞘翅目和半翅目）出现在＜10％的花序上。除了秋天的螨虫较多外，所有节肢动物的夏季种群密度最高，而冬季和春季种群密度较低。内陆地区的mi虫和蓟马的人口密度高于沿海地区。在建立的最初阶段，毛食葡萄球菌花序上潜在捕食者的总发病率和丰度较低，不足以对圣塔克鲁奇酵母种群产生负面影响。

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