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Effectiveness of bat boxes for bat conservation and insect suppression in a Western Australian urban riverine reserve
Austral Ecology ( IF 1.5 ) Pub Date : 2020-12-02 , DOI: 10.1111/aec.12980
Joanna M. Burgar 1 , Yvette Hitchen 2, 3 , Jim Prince 4
Affiliation  

Urban wetlands are important habitat for wildlife, particularly insectivorous bats which provide a key ecosystem service in suppressing insects. While claims are often made that bats consume high numbers of mosquitoes in a given night, the evidence for this claim is scant at best. The Canning River Regional Park (CRRP), an urban riverine reserve in Western Australia, has fauna conservation as a primary goal and mosquito control as a top priority. We took advantage of occupied bat boxes within the CRRP to determine the roosting bat species and their diet using non‐invasive DNA metabarcoding of bat faecal samples. The widespread and urban‐adapted Chalinolobus gouldii was the only bat species detected roosting in the bat boxes. This opportunistic forager consumed over 700 unique prey (operational taxonomic units; OTUs); only 14% of OTUs were assigned to either species or genus, representing seven insect orders. Mosquitoes were detected in 11% of the 90 faecal samples, over multiple years and in both the maternity and non‐maternity seasons. Assigned prey was predominantly Lepidoptera with 40% of the 49 Lepidoptera species negatively impacting humans. Urban riverine reserves are critical habitat for bats, which in turn, are crucial in providing the ecosystem service of insect suppression.

中文翻译:

蝙蝠箱在西澳大利亚州城市河流保护区保护蝙蝠和抑制昆虫的功效

城市湿地是野生生物的重要栖息地,尤其是食虫蝙蝠,它们为抑制昆虫提供了关键的生态系统服务。尽管经常声称蝙蝠在给定的夜晚会消耗大量的蚊子,但充其量这种说法的证据充其量是很少的。坎宁河地区公园(CRRP)是西澳大利亚州的城市河流保护区,将保护动物作为首要目标,将蚊子防治作为首要任务。我们利用CRRP中的蝙蝠箱占据空间,使用蝙蝠粪便样本的非侵入式DNA代谢条形码确定栖息的蝙蝠种类及其饮食。广泛和城市适应的Chalinolobus gouldii是唯一在蝙蝠箱中检测到栖息的蝙蝠物种。这个机会性的觅食者消耗了700多个独特的猎物(业务分类单位; OTU);OTU中只有14%被分配给物种或属,代表七个昆虫纲。在90年的粪便样本中,在多年期间以及在产假期和非产假期均检测到了蚊子。指定的猎物主要是鳞翅目,对49种鳞翅目物种造成了40%的负面影响。城市河流保护区是蝙蝠的重要栖息地,而蝙蝠反过来对于提供昆虫抑制的生态系统服务也至关重要。
更新日期:2020-12-02
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