Email: the larval stage of click beetles (Coleoptera: Elateridae), are a serious soil-inhabiting pest of many different field crops grown in North America. Reviewers' reports totaled 2117 words, excluding any confidential comments to the academic editor.įUNDING: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was supported in part by funds from the Montana Seed Potato Producers Association and USDA Crops at Risk Grant 2010-51100-21547.ĭECLARATION OF CONFLICTING INTERESTS: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.ĬORRESPONDING AUTHOR: Anuar Morales-Rodriguez, Department of Plant Sciences & Plant Pathology, Montana State University, 119 Plant Biosciences Building, Bozeman, MT 59717, USA. PEER REVIEW: Four peer reviewers contributed to the peer review report. KEYWORDS: Aeolus mellillus, Limonius californicus, L. The 5098 wireworm collected from four sites included seven species: Aeolus mellillus, Agriotes sp, Dalopius sp, Hypnoidus bicolor, Limonius californicus, Limonius infuscatus, and S. ![]() Pitfall and stocking traps collected greater numbers of wireworm (16, respectively) followed by pot-type and canister-type traps (1173 and 725, respectively). In this study, the efficacy of pitfall, stocking, pot, and canister traps baited with wheat and barley mixtures was evaluated for monitoring wireworm populations in four commercial cereal fields in Montana. Selecting the appropriate sampling protocol to monitor wireworm for research or applied entomology depends on the objective, including simply detecting the presence or absence of wireworm, surveying the composition of wireworm assemblages, or estimating spatial and temporal population densities. This is noteworthy as if we manage to locally eradicate YCA in the future, the absence of a competitor may make way for another ant species to invade Vallée de Mai, or indeed allow native ants to return.ABSTRACT: The basic principles of a reliable integrated pest management program include pest identification, monitoring, and distribution. Populations of other invasive alien ants such as Technomyrmex albipes, Nylanderia bourbonica and Odontomachus simillimus have also decreased substantially since baiting started in 2019. The high numbers of YCA in Fond Peper are also of major conservation concern given the site’s importance for endemic caecilians, geckos, skinks, black parrots, snails, slugs and many other invertebrates. It also highlights the potential for rapid reinvasion if control efforts are not sustained. The Fond Peper survey shows us how abundant YCA could have been had no action been taken to arrest their increasing population. ![]() The substantial decrease of YCA in the Vallée de Mai strongly suggests that the two fipronil treatments this year were highly effective in reducing YCA numbers and bolsters our confidence in further reducing them with another baiting deployment in March. On the other hand, the results showed the highest numbers of YCA in Fond Peper since pitfall surveys began. YCA appear to have returned to the distribution from 2010 they are found in highest abundance only in the north-east of the forest. The results showed that YCA now occupy 60% of the Vallée de Mai in very low numbers (0–9 individuals) which is the smallest distribution since 2015 and the lowest numbers since they were first discovered in the site. The resulting 75 samples (50 from the Vallée de Mai and 25 from Fond Peper) were then sorted in December. Another survey was carried out in Fond Peper without AntOff treatment for comparison. The YCA taskforce used a more ergonomic pitfall trap design for this survey in the Vallée de Mai, which was treated with AntOff (the ant bait). In December we surveyed the numbers of ants using pitfall traps, to assess the impact of baiting on YCA distribution and abundance. The Seychelles Islands Foundation (SIF) responded to this threat by setting up a dedicated YCA taskforce earlier last year, who have carried out two rounds of baiting in the forest in an attempt to reduce the numbers of YCA. The yellow crazy ant (YCA) is an invasive alien species and causes significant impacts on the native wildlife of the Vallée de Mai. Environment YCA surveys in the Vallée de Mai suggest that baiting has reduced numbers of ants |02 March 2020
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