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Updated: Jun 26, 2026
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Extraction of Saliva, Haemolymph, Salivary Glands, and Midgut from Individual Ticks (Acari: Ixodidae)
Published on: October 31, 2025
Autophagy in ticks
Rika Umemiya-Shirafuji1, Tomohide Matsuo, Kozo Fujisaki
1Laboratory of Emerging Infectious Diseases, Department of Frontier Veterinary Medicine, Kagoshima University, Kagoshima, Japan.
Methods in Enzymology
|February 3, 2009
Summary
Ticks utilize autophagy, a cellular recycling process, to survive long starvation periods off-host. This study establishes methods to detect autophagy-related genes and proteins in ticks, aiding future research.
Area of Science:
- * Entomology
- * Molecular Biology
- * Cellular Biology
Background:
- * Ticks exhibit extended survival periods off-host, suggesting unique physiological adaptations.
- * Autophagy, a cellular degradation process, is crucial for lifespan extension in model organisms during starvation.
- * Limited research exists on autophagy in ticks, highlighting a gap in understanding their survival strategies.
Purpose of the Study:
- * To investigate the potential role of autophagy in tick survival during prolonged starvation.
- * To establish and describe methods for detecting autophagy-related components in ticks.
- * To provide a foundation for studying autophagy in the 3-host tick *Haemaphysalis longicornis*.
Main Methods:
- * Identification and characterization of an autophagy-related gene homolog (HlATG12) in *H. longicornis*.
- * Analysis of *HlATG12* gene expression patterns across different tick developmental stages.
- * Electron microscopy to visualize midgut epithelial cells during the unfed period.
Main Results:
- * Discovery of the *HlATG12* gene homolog in *H. longicornis*.
- * Detection of *HlATG12* expression in nymphal and adult stages.
- * Localization of the HlAtg12 protein in the midgut epithelial cells of unfed adult ticks.
Conclusions:
- * The study provides foundational methods for detecting autophagy in ticks.
- * The identified *HlATG12* gene and protein are potential markers for studying tick autophagy.
- * These methods can be adapted for autophagy research in other hard tick species.
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