Lethal and sublethal effects of thiacloprid on non-target carpenter ant, Camponotus japonicus Mayr (Hymenoptera: Formicidae)

Jung, Jinyoung; Jung, Chan-Sik; Koh, Seok‐Keun

doi:10.1016/j.aspen.2018.10.009

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…In light of previous data on bees, trade-off scenarios between detoxification and reproduction appear likely. Even though there is evidence for lethal effects of neonicotinoids on ants at high concentrations 31 , so far few studies have investigated sublethal and none long-term effects from chronic exposure at the colony level [32][33][34] . Furthermore, ants are not considered as representatives for soildwelling organisms and thus they are not covered in current risk assessments schemes by the EFSA or the OECD 35,36 .…”

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confidence: 99%

Long-term effects of neonicotinoid insecticides on ants

et al. 2020

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The widespread prophylactic usage of neonicotinoid insecticides has a clear impact on non-target organisms. However, the possible effects of long-term exposure on soil-dwelling organisms are still poorly understood especially for social insects with long-living queens. Here, we show that effects of chronic exposure to the neonicotinoid thiamethoxam on black garden ant colonies, Lasius niger, become visible before the second overwintering. Queens and workers differed in the residue-ratio of thiamethoxam to its metabolite clothianidin, suggesting that queens may have a superior detoxification system. Even though thiamethoxam did not affect queen mortality, neonicotinoid-exposed colonies showed a reduced number of workers and larvae indicating a trade-off between detoxification and fertility. Since colony size is a key for fitness, our data suggest long-term impacts of neonicotinoids on these organisms. This should be accounted for in future environmental and ecological risk assessments of neonicotinoid applications to prevent irreparable damages to ecosystems.

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confidence: 99%

Long-term effects of neonicotinoid insecticides on ants

et al. 2020

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“…In fact, lower thiacloprid residues (0.09 mg kg −1 ) were found in pine shoots of the T15 group than those in Suh et al . (2020), but the residues were regarded as lethal concentrations in other studies 16 . Thus, the mortality of M. alternatus adults can vary largely based on thiacloprid residues that depend on environmental variation in field conditions, for example, exposure to sunlight, pH, temperature and the composition of the microbial community 17 .…”

Section: Discussionmentioning

confidence: 99%

Can insecticide applications used to kill vector insects prevent pine wilt disease?

Jung

Lee

Cha

et al. 2021

Pest Management Science

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BACKGROUND The aerial application of insecticides is a primary method used to prevent the spread of pine wilt disease by reducing the population density of Monochamus beetles, the vector insects of pine wood nematodes (PWNs). This study investigated the mortality of vector insects and the ratio of PWN‐infected trees according to systemically remaining thiacloprid residues in Pinus densiflora. To do this, thiacloprid was sprayed on a nursery of 5‐year‐old P. densiflora in meshed cages. Then Monochamus alternatus adults carrying PWNs were placed into meshed cages 1 and 15 days post‐treatment (T1 and T15 groups for thiacloprid spraying, and N1 and N15 groups for nonsprayed groups) and tree mortality was monitored. We also measured the thiacloprid residues in pine branches in each treatment. RESULTS In pine trees, more thiacloprid residues were found in the T1 group than in the T15 group, but most M. alternatus adults died in the T1 and T15 groups and PWNs were detected in 51.3% of all recaptured beetles. In the 16th week after each treatment, the average tree mortalities in T1 and T15 were 0% and 16.7%, respectively, whereas mortality of ≈50–60% of all tested trees in the nonsprayed groups was observed. CONCLUSION The current aerial application of insecticides may have a limitation in preventing PWN transmission from dying M. alternatus adults when they are exposed to low thiacloprid residues in pine trees.

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“…However, it is mandatory for providing nutrition to the nest-housed castes such as the queen and her brood, which are unable to forage outside of the nest by themselves. This food exchange can be very efficient and quick; within a few dozen minutes, most individuals can be fed (Sendova-Franks et al 2010;Jung et al 2018). If the effect of glyphosate is detrimental to ants, the continuous provision of this compound to queens and brood may lead to severe damage to the colony in a very short time.…”

Section: Discussionmentioning

confidence: 99%

Palatability of glyphosate in ants: a field experiment reveals broad acceptance of highly polluted solutions in a Mediterranean ant

Frizzi

Masoni

Balzani

et al. 2020

Environ Sci Pollut Res

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Glyphosate is a systemic herbicide still used in many countries, though there are several known detrimental effects on animals. Previous studies concerning its effects on social insects are available, but they are primarily focused on honeybees; little is known about the interactions of this compound with ants. Here, we assessed whether different concentrations of glyphosate can be perceived by ant workers and to what extent. As a model species, we used the Mediterranean ant Crematogaster scutellaris, commonly found in agroecosystems. We performed 3,000 individual tests of acceptance using ten different solutions of various concentrations of the herbicide. Half of the solutions contained added sucrose in order to test the possible masking effect of the sugar taste on glyphosate. We used comparable glyphosate concentrations to those previously used in other studies on social insects or suggested by the producer. We found that the acceptance of the solutions decreased as the concentration of the herbicide increased. However, a significant percentage of ants drank the solutions with concentrations up to dozens of times higher than those inducing toxic effects in bees. In light of these results, we urge further assessment of the effects of glyphosate on ants, particularly because the food ingested by workers is transferred to the brood and queens, posing a potential threat to the health of the entire colony. Surprisingly, we did not record any difference in acceptance between solutions with and without sugar; this point is discussed regarding drought stress.

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Lethal and sublethal effects of thiacloprid on non-target carpenter ant, Camponotus japonicus Mayr (Hymenoptera: Formicidae)

Cited by 8 publications

References 15 publications

Long-term effects of neonicotinoid insecticides on ants

Long-term effects of neonicotinoid insecticides on ants

Can insecticide applications used to kill vector insects prevent pine wilt disease?

Palatability of glyphosate in ants: a field experiment reveals broad acceptance of highly polluted solutions in a Mediterranean ant

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