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Gonipterus (Coleoptera: Curculionidae) in subtropical Australia: host associations and natural enemies
Austral Entomology ( IF 1.6 ) Pub Date : 2021-06-09 , DOI: 10.1111/aen.12552
Natalia M Souza 1 , Simon A Lawson 1 , Helen F Nahrung 1
Affiliation  

Gonipterus is a genus of defoliating weevils that causes significant impact in commercially grown eucalypts in their native range in southern Australia and as invasive pests in Western Australia and several countries overseas. The diversity of species in this genus is still in the process of discovery, and in subtropical Australia, its diversity and ecological parameters are largely unknown. We surveyed Gonipterus phenology, species composition and trophic associations in South East Queensland, where little has been recorded about this genus. Surveys were conducted once a month in a non-commercial plantation of native eucalypts, where three species of trees were sampled regularly and others checked on an ad hoc basis. On each sampling occasion, adult weevils, larvae and egg capsules were collected, adults identified, larvae reared and egg capsules individualized in small containers for emergence of larvae and parasitoids. Two peaks of egg-laying occurred, whereas numbers of adults and larvae had only one peak each. Six species of Gonipterus were collected: two described but in need of revision, two undescribed but previously recognized and two undescribed and hitherto unrecognized, each with a different pattern of host–tree association. Three egg-parasitoid species, Anaphes nitens, Centrodora damoni and Euderus sp. were reared from egg capsules, varying in prevalence according to the tree species from which the eggs were collected.

中文翻译:

Gonipterus(鞘翅目:Curculionidae)在亚热带澳大利亚:寄主协会和天敌

Gonipterus是一种落叶象鼻虫,对澳大利亚南部原生范围内商业种植的桉树造成重大影响,并在西澳大利亚和海外几个国家成为入侵性害虫。该属物种的多样性仍处于发现过程中,在亚热带的澳大利亚,其多样性和生态参数在很大程度上是未知的。我们调查了昆士兰东南部的 Gonipterus物候、物种组成和营养关联,但关于该属的记录很少。每月在本地桉树的非商业种植园进行一次调查,定期对三种树木进行采样,并临时检查其他树木基础。在每次采样时,收集成虫、幼虫和卵囊,鉴定成虫,饲养幼虫并将卵囊单独放入小容器中,以便出现幼虫和寄生蜂。出现了两个产卵高峰,而成虫和幼虫的数量各只有一个高峰。收集了六种Gonipterus:两种已被描述但需要修改,两种未被描述但以前已被识别,以及两种未被描述且迄今为止未被识别,每种都有不同的寄主 - 树关联模式。三种卵寄生物种,Anaphes nitensCentrodora damoniEuderus sp。是用卵囊饲养的,流行率因收集卵的树种而异。
更新日期:2021-06-09
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