Volume 17, Issue 4 (Winter 2026)
3 2026, 17(4): 38-47 |
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Sudagar M, Firouzbakhsh S, Heidari S, Maghsoudlou Kamali M. The Effect of Herbal Distillates of Peppermint, Chicory, and Thyme on Deformations (Banding) and Blood Regurgitation in the Oriental Leech (Hirudo orientalis). 3 2026; 17 (4) :38-47
URL: http://jmb.ahvaz.iau.ir/article-1-1087-en.html
URL: http://jmb.ahvaz.iau.ir/article-1-1087-en.html
Department of Aquaculture, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
Abstract: (287 Views)
Regurgitation of blood and gastrointestinal contents through the mouth in the oriental leech (Hirudo orientalis), leading to beaded, sausage-like, and hourglass-shaped deformities, are among the observed physical changes that can result in leech mortality. Plants such as peppermint (due to its warm and dry nature, as well as its soothing and antiemetic effects on digestive problems), thyme (due to its strong antimicrobial and antioxidant properties), and chicory (due to its wide range of pharmacological properties, including antibacterial and analgesic effects) are traditionally used. In this study, the effects of herbal distillates of peppermint, chicory, and thyme on body deformity (segmentation) in the oriental leech (Hirudo orientalis) were investigated. This research was conducted from October to December 2024. A total of 216 segmented oriental leeches, resulting from feeding, of cosmetic and medicinal sizes, were distributed into 72 one-liter containers, with three segmented leeches per container. Herbal distillates of thyme, chicory, and peppermint were tested at doses of 10, 20, and 30 cc per liter, along with a control group (three replicates without exposure to distillates). This experiment lasted for 20 days, with daily water changes, and the effect of the distillates on leech tissue repair and improvement of segmentation was evaluated. The results showed that the use of thyme, chicory, and peppermint distillates at different doses had varying effects on the leeches. Thyme at doses of 20 and 30 cc per liter caused blood regurgitation and total leech mortality, while at a dose of 10 cc, it only caused blood regurgitation, but no mortality was observed. In chicory distillate treatments, the 10 CC dose caused blood regurgitation, but no blood regurgitation was observed at 20 and 30 cc doses. In peppermint extract treatments, the recovery process of segmented leeches was completely evident, and at a dose of 30 cc, a better recovery trend was observed in segmented leeches compared to 10 and 20 CC per liter doses.
Type of Study: Research |
Subject:
Fisheries
Received: 2026/01/6 | Accepted: 2026/05/3 | Published: 2026/05/3
Received: 2026/01/6 | Accepted: 2026/05/3 | Published: 2026/05/3
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