Toxicity effects and biomarkers of tebufenozide exposure in Yuukianura szeptyckii (Collembola

Neanuridae)

Yun Sik Lee, Sung Eun Lee, Jino Son, Yongeun Kim, June Wee, Ki Jong Cho

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Tebufenozide is an insect growth regulator used to control pest caterpillar populations. As an ecdysone agonist, tebufenozide is equally toxic to several non-target arthropod species, binding the receptor sites of the molting hormone 20-hydroxyecdysone and causing premature and lethal molting. In this study, the toxic effects of tebufenozide were assessed, and biomarkers of tebufenozide exposure were identified, in the non-target soil collembolan species Yuukianura szeptyckii. Adult mortality and reproduction in Y. szeptyckii exposed to tebufenozide were evaluated after 28 days of exposure and were used to calculate LC50 and EC50, respectively. The LC50 could not be determined, because the mortality values observed were below 50%, even when exposed to the highest concentration tested (700 mg/kg), but the EC50 was 95.5 mg/kg. Effects on hatching and molting rates were evaluated using compressed soils, to prevent experimental individuals from burrowing; thus, all eggs and exuviae were detectable on the soil surface. Significant negative effects of tebufenozide exposure on the hatching rate and molting frequency were observed only at the highest concentration tested (700 mg/kg). Proteomic analyses were conducted to detect the cryptic effects of toxicity in adult collembolans exposed for 28 days to 43.8 mg/kg of tebufenozide, a concentration at which no toxicity effects were observed. The production rates of two ribosomal proteins, as well as proteins involved in apoptotic cell signaling, were higher in collembolans exposed to tebufenozide than in the control group. However, the production of proteins involved in glycolysis and energy production was downregulated. Therefore, the ecotoxicoproteomic approach is a promising tool for measuring the cryptic effects of tebufenozide exposure in Y. szeptyckii at low concentrations.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalEnvironmental Geochemistry and Health
DOIs
Publication statusAccepted/In press - 2018 Jul 6

Fingerprint

Biomarkers
Toxicity
biomarker
toxicity
Proteins
Soils
Pest control
Cell signaling
Hormones
protein
hatching
Ecdysone
mortality
Poisons
growth regulator
proteomics
caterpillar
pest control
burrowing
arthropod

Keywords

  • Ecotoxicoproteomic approach
  • Hatching
  • Molting
  • Non-target species
  • Reproduction

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Water Science and Technology
  • Environmental Science(all)
  • Geochemistry and Petrology

Cite this

Toxicity effects and biomarkers of tebufenozide exposure in Yuukianura szeptyckii (Collembola : Neanuridae). / Lee, Yun Sik; Lee, Sung Eun; Son, Jino; Kim, Yongeun; Wee, June; Cho, Ki Jong.

In: Environmental Geochemistry and Health, 06.07.2018, p. 1-12.

Research output: Contribution to journalArticle

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