American Society of Hirudotherapy

The duration of rest and feeding greatly affects the re-breeding of ectoparasites: Hirudo verbana, Hirudo medicinalis and Hirudo orientalis

Research article published in Annals of parasitology (2022)

Last Updated: March 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Genomics & ProteomicsClinical TrialsAminov R, Frolov A, Aminova A · Annals of parasitology, 2022

Abstract

Ectoparasitic leeches have many biologically active substances in their body, which are able to show various therapeutic effects, which makes them very relevant in the study. Among them, the most common are medicinal leeches: Hirudo verbana, Hirudo medicinalis and Hirudo orientalis. They are listed in the Red Book as a vulnerable species, so their population is mostly supported in biolabs. Therefore, the search for different methods of their preservation is relevant. The aim of the work was to test the effect of the duration of rest and feeding of animals for re- reproduction, which will increase their population. For the study, three experimental animal groups were formed: 1 control - the animals were fed a week after the first reproduction, re-reproduction occurred not earlier than 2 months; 2 experimental - selected animals that remained clitellum after the first reproduction and again sent to the peat-soil environment for reproduction without rest and feeding; 3 experimental - selected animals that remained clitellum after the first reproduction, fed after 1 week, after another 1-2 weeks again sent to the peat-soil medium for reproduction. As a result of the study, the restoration of the physiological state after the first dilution in the first and third groups was registered. In the second group, the animals are depleted as a result of defective offspring, mortality of them and their offspring.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal Article

Summary

Ectoparasitic leeches have many biologically active substances in their body, which are able to show various therapeutic effects, which makes them very relevant in the study.

Why This Matters for Hirudotherapy

Expands the genomic and molecular understanding of medicinal leeches and their bioactive repertoire.

Citation

The duration of rest and feeding greatly affects the re-breeding of ectoparasites: Hirudo verbana, Hirudo medicinalis and Hirudo orientalis.

Aminov R, Frolov A, Aminova A · Annals of parasitology, 2022

Added to ASH library: March 18, 2026 · Site last updated: March 18, 2026

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.

The duration of rest and feeding greatly affects the re-breeding of ectoparasites: Hirudo verbana, Hirudo medicinalis and Hirudo orientalis | ASH