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Blood feeding-induced transcriptomic changes in the hard tick Ixodes persulcatus
Yihan Lou1, Bin Wu2, Wenwu Yao1
1Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China.
Frontiers in Insect Science
|March 11, 2026
Summary
This study reveals how the tick Ixodes persulcatus manages physiological challenges during blood feeding by analyzing gene expression. Key findings highlight adaptations in detoxification and antioxidant systems crucial for tick survival and reproduction.
Area of Science:
- Molecular Biology
- Parasitology
- Genomics
Background:
- Ticks are hematophagous ectoparasites facing physiological hurdles during blood feeding.
- These challenges include managing oxidative stress and detoxifying host molecules.
Purpose of the Study:
- To investigate the molecular physiology of female Ixodes persulcatus during blood feeding.
- To characterize stage-associated transcriptional changes, focusing on detoxification and antioxidant systems.
Main Methods:
- Performed de novo transcriptome assembly and genome-wide transcriptional profiling of Ixodes persulcatus.
- Utilized functional annotation and Gene Ontology (GO) enrichment analyses across unfed, semi-engorged, and fully engorged stages.
Main Results:
- Generated a reference transcriptome with 56,900 unigenes.
- Identified species-specific expansions in cytochrome P450s and glutathione S-transferases.
- Observed significant transcriptional changes related to nutrient metabolism, reproduction, and stress response.
Conclusions:
- Tick hematophagy involves complex molecular adaptations in detoxification and antioxidant systems.
- Transcriptional profiling provides insights into tick physiology, stress response, and metabolic regulation.
