Ecological impacts on native ant and ground-dwelling animal communities through Argentine ant (Linepithema humile) (Hymenoptera: Formicidae) management in Japan

Inoue, Maki; Saito-Morooka, Fuki; Suzuki, Kazutaka; Nomura, Takuji; Hayasaka, Daisuke; Kishimoto, Tadamitsu; Sugimaru, Katsuo; Sugiyama, Takashi; Goka, Koichi

doi:10.1007/s13355-015-0338-7

Cited by 17 publications

(17 citation statements)

References 25 publications

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“…The eradication program began in April 2011 (Inoue et al, 2015). To evaluate the effects of the program, we established three monitoring plots each at Tokai (Plots i-iii; Fig 1b) and Jonan (Plots I-III; Fig 1c).…”

Section: Pesticide Treatmentmentioning

confidence: 99%

“…By contrast, Hoffmann (2010) documented the eradication of a small population of P. megacephala using hydramethylnon and the recovery of native ant abundance and species richness within the treated area. Inoue et al (2015) reported the shortterm recovery of non-target communities after application of fipronil to control L. humile and observed no non-target effects. However, the positive effects of release from pressure caused by invasive ant species have not been considered in previous research.…”

Section: Introductionmentioning

confidence: 98%

“…In Japan, it was first discovered in 1993 (Sugiyama, 2000) and has since spread to 12 prefectures (National Institute of Environmental Studies, 2014). Since 2011, our group has conducted an eradication program using toxic baits containing fipronil (Inoue et al, 2015), and we have successfully eradicated two Tokyo populations on landfill islands (Sakamoto et al, 2017). The aim of the eradication program is to protect the indigenous invertebrate communities from the invasive alien ant species.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Fipronil on Non-target Ants and Other Invertebrates in a Program for Eradication of the Argentine Ant, Linepithema humile

et al. 2019

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Pesticides are frequently used to eradicate invasive ant species, but pose ecological harm. Previous studies assessed non-target effects only in terms of the increase or decrease of abundance or species richness after pesticide applications. Positive effects of the release from pressure caused by invasive ant species have not been considered so far. To more accurately assess pesticide effects in the field, the non-target effects of pesticides should be considered separately from the positive effects of such releases. Here, we used monitoring data of ants and other invertebrates collected in a program for the eradication of the Argentine ant, Linepithema humile (Mayr), using fipronil. First, we separately assessed the effects of L. humile abundance and fipronil exposure on non-target ants and other invertebrates using generalized linear models. The abundance of L. humile and the number of pesticide treatments were negatively associated with the total number of non-target individuals and taxonomic richness. We also noted negative relationships between the number of individuals of some ant species and other invertebrate taxonomic groups. The L. humile × pesticide interaction was significant, suggesting that the abundance of L. humile affected the level of impact of pesticide treatment on non-target fauna. Second, we evaluated the dynamics of non-target ant communities for 3 years using principal response curve analyses. Non-target ant communities treated with fipronil continuously for 3 years recovered little, whereas those treated for 1 year recovered to the level of the untreated and non-invaded environment.

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Section: Pesticide Treatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Effects of Fipronil on Non-target Ants and Other Invertebrates in a Program for Eradication of the Argentine Ant, Linepithema humile

et al. 2019

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“…As a result of these features, in the regions where it has been introduced, L. humile competitively displaces or disrupts local arthropod communities, including native ants (Human and Gordon 1996;Holway et al 2002;Sunamura et al 2007). Thus, the prevention of its introduction and spread, as well as eradication of its established colonies, should be addressed worldwide (Simberloff et al 2005;Hulme 2006; Ministry of the Environment, Japan 2013; Inoue et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…This insecticide is also used for control of Solenopsis invicta Buren (Collins and Callcott 1998). However, while L. humile is readily susceptible to active ingredients like fipronil (Inoue et al 2015), such chemical treatments often fail to achieve a successful eradication of this particular ant species (Sunamura et al 2012). We think that one of the reasons for the lack of success may be an intra-species variation in sensitivity to this toxic chemicals (Baird et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Different acute toxicity of fipronil baits on invasive Linepithema humile supercolonies and some non-target ground arthropods

et al. 2015

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Fipronil is one of the most effective insecticides to control the invasive ant Linepithema humile, but its effectiveness has been assessed without considering the genetic differences among L. humile supercolonies. We hypothesized that the susceptibility of the ant to fipronil might differ among supercolonies. If so, dosage and concentration of fipronil may need to be adjusted for effective eradication of each supercolony. The relative sensitivities of four L. humile supercolonies established in Hyogo (Japan) to fipronil baits were examined based on their acute toxicity (48-h LC(50)). Toxicities of fipronil to seven ground arthropods, including four native ant species, one native isopoda, and two cockroaches were also determined and compared to that of L. humile supercolonies using species sensitivity distributions. Marked differences in susceptibility of fipronil were apparent among the supercolonies (P < 0.008), with the 'Japanese main supercolony' (271 μg L(-1)) being five to ten times more sensitive to fipronil than other colonies (1183-2782 μg L(-1)). Toxicities to non-target species (330-2327 μg L(-1)) were in the same range as that of L. humile, and SSDs between the two species groups were not significantly different (t = -1.389, P = 0.180), suggesting that fipronil's insecticidal activity is practically the same for L. humile as for non-target arthropods. Therefore, if the invasive ant is to be controlled using fipronil, this would also affect the local arthropod biodiversity. Only the 'Japanese main supercolony' can be controlled with appropriate bait dosages of fipronil that would have little impact on the other species.

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Biology of Non-Vector Arthropods

Hirabayashi,

Sakamoto,

Sawabe

et al. 2024

Entomology Monographs

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Ecological impacts on native ant and ground-dwelling animal communities through Argentine ant (Linepithema humile) (Hymenoptera: Formicidae) management in Japan

Cited by 17 publications

References 25 publications

Effects of Fipronil on Non-target Ants and Other Invertebrates in a Program for Eradication of the Argentine Ant, Linepithema humile

Effects of Fipronil on Non-target Ants and Other Invertebrates in a Program for Eradication of the Argentine Ant, Linepithema humile

Different acute toxicity of fipronil baits on invasive Linepithema humile supercolonies and some non-target ground arthropods

Biology of Non-Vector Arthropods

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