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首页> 外文期刊>Journal of Economic Entomology >Distributions of lesser mealworm (Coleoptera : Tenebrionidae) in litter of a compacted earth floor broiler house in subtropical Queensland, Australia
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Distributions of lesser mealworm (Coleoptera : Tenebrionidae) in litter of a compacted earth floor broiler house in subtropical Queensland, Australia

机译：澳大利亚昆士兰亚热带紧凑型肉鸡舍产仔中小粉虫（鞘翅目：天蛾科）的分布

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摘要

Distributions of lesser mealworm, Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae), in litter of a compacted earth floor broiler house in southeastern Queensland, Australia, were studied over two flocks. Larvae were the predominant stage recorded. Significantly low densities occurred in open locations and under drinker cups where chickens had complete access, whereas high densities were found under feed pans and along house edges where chicken access was restricted. For each flock, lesser mealworm numbers increased at all locations over the first 14 d, especially under feed pans and along house edges, peaking at approximate to 26 d and then declining over the final 28 d. A life stage profile per flock was devised that consisted of the following: beetles emerge from the earth floor at the beginning of each flock, and females lay eggs, producing larvae that peak in numbers at approximate to 3 wk; after a further 3 to 4 wk, larvae leave litter to pupate in the earth floor, and beetles then emerge by the end of the flock time. Removing old litter from the brooder section at the end of a flock did not greatly reduce mealworm numbers over the subsequent flock, but it seemed to prevent numbers increasing, while an increase in numbers in the grow-out section was recorded after reusing litter. Areas under feed pans and along house edges accounted for 5% of the total house area, but approximately half the estimated total number of lesser mealworms in the broiler house occurred in these locations. The results of this study will be used to determine optimal deployment of site-specific treatments for lesser mealworm control.
机译：在澳大利亚昆士兰州东南部一个紧凑的地上肉鸡舍的垫料中，研究了小粉虫小蚜虫（Panzer）（鞘翅目：Tenebrionidae）的分布情况，分布在两个鸡群上。幼虫是记录的主要阶段。鸡可以完全进入的空旷地点和酒杯下方的密度显着较低，而在喂食盘下方和鸡只进入受限的房屋边缘发现了高密度。对于每个羊群，在开始的14 d内，尤其是在喂食盘下方和鸡舍边缘，所有位置的粉虫数量都增加，在大约26 d达到峰值，然后在最后28 d下降。设计了每个鸡群的生命阶段概况，包括以下内容：在每个鸡群的开始时，甲虫从地面上出来，雌虫产卵，产生幼虫，其数量大约在3 wk时达到峰值。再过3到4周后，幼虫将垃圾丢到地上化p，然后在成群时间结束时出现甲虫。在鸡群末尾从育雏箱部分移走旧垃圾并不会大大减少随后的鸡群中的粉虫数量，但似乎可以防止数量增加，而在重用垃圾后，在成活部分的数量有所增加。进食盘下方和鸡舍边缘的面积占鸡舍总面积的5％，但估计这些地区的肉鸡小粉虫总数约占一半。这项研究的结果将被用来确定针对特定地点的治疗方法的最佳部署，以减少对粉虫的控制。

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