2. Academic Validation
  3. Effects of λ-cyhalothrin on the behavior and physiology of Leschenault's rousette bat (Rousettus leschenaultii)

Effects of λ-cyhalothrin on the behavior and physiology of Leschenault's rousette bat (Rousettus leschenaultii)

  • Environ Pollut. 2025 Jul 1:376:126417. doi: 10.1016/j.envpol.2025.126417.
Yanlin Song 1,  Yingying Liu 1,  Yujuan Wang 1,  Xiaobin Huang 2,  Yang Geng 1,  Lixin Gong 1,  Jiang Feng 3,  Hui Wu 4,  Tinglei Jiang 5
Affiliations

Affiliations

  • 1 Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China; Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China.
  • 2 Institute of Pathogens and Vectors, Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention, Dali University, Dali, 671000, Yunnan, China.
  • 3 Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China; Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China; College of Life Science, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China.
  • 4 Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China; College of Life Science, Jilin Agricultural University, 2888 Xincheng Street, Changchun, 130118, China. Electronic address: wuh123@nenu.edu.cn.
  • 5 Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China; Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China. Electronic address: jiangtl730@nenu.edu.cn.
PMID: 40349820 DOI: 10.1016/j.envpol.2025.126417
Abstract

In addition to exerting direct toxic effects, pesticides disrupt the complex physiology and behavioral patterns of bats. Previous studies have focused on quantifying pesticide residues in bats. However, limited studies have examined the effects of pesticides on acoustic behavior, auditory health, and gene expression in bats. This study examined the effects of λ-cyhalothrin on vocalization, auditory health, and gene expression in Rousettus leschenaultii by integrating behavioral, cochlear pathological, and transcriptomic analyses. Exposure to low and high concentrations of λ-cyhalothrin increased the frequencies of social calls in R. leschenaultii. Histological analysis revealed that λ-cyhalothrin induced tympanic canal bleeding, Reissner's membrane rupture, and cell shedding in the tectorial membrane and the organ of Corti. Transcriptomic analysis revealed that λ-cyhalothrin significantly altered the enrichment of genes in Gene Ontology entries, especially those related to actin, transport protein for sodium-potassium ion channel, and the calcium pathway. These results suggest that λ-cyhalothrin exposure alters social calls in R. leschenaultii by inducing pathological damage and dysregulating gene expression in the cochlea. Thus, there is an urgent need to develop sustainable agricultural practices to mitigate pesticide impacts on bats and their ecological roles.

Keywords

Rousettus leschenaultii; bat; cochlea; pesticide exposure; social calls; λ-cyhalothrin.

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