Caryophyllene oxide from bioassay-guided fractionation of Toona sinensis essential oil shows insecticidal activity against poultry red mite (Dermanyssus gallinae)

IF 2 2区农林科学 Q2 PARASITOLOGY

Veterinary parasitology Pub Date : 2025-03-11 DOI:10.1016/j.vetpar.2025.110442

Wenchang Fan , Kaiyang Cao , Dongying Wang , Liping Ma

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Abstract

The widespread distribution and ecumenical abundance of the poultry red mite, Dermanyssus gallinae (De Geer), in chicken houses, has been bringing about one intractable challenge for the egg-laying hens. However, because of the appearance of drug resistance and the animal safety legislation, the search for some effective insecticidal agents is necessary. In the present investigation, the essential oil extracted from the tender shoots and young leaﬂets of Toona sinensis (Chinese toon, TSEO) were demonstrated to be not only display significant antioxidant effect, but also revealed prominent insecticidal activity against the poultry red mite. Briefly, in contact toxicity bioassay, the LC₅₀ value was 7.3 μg/mL. In fumigant toxicity bioassay, the highest mortality in the closed container method, and the mortality was 72.5 %. In repellent activity bioassay and residual toxicity bioassay, when TSEO was administrated at the concentration of 20.0 μg/cm³, 89.2 % of mites were repelled for up to six days. Moreover, caryophyllene oxide, was considered to be the compound in TSEO that displayed insecticidal effect against the mites. Therefore, together with the essential oil TESO, caryophyllene oxide can be developed and employed as potential insecticidal agents against the mites in future.

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香椿精油生物测定分离得到的氧化石竹烯对家禽红螨有杀虫活性

鸡舍中家禽红螨（Dermanyssus gallinae, De Geer）的广泛分布和普遍丰富，给蛋鸡带来了一个棘手的挑战。然而，由于抗药性的出现和动物安全立法，寻找一些有效的杀虫剂是必要的。从香椿嫩枝和幼叶中提取的精油不仅具有显著的抗氧化作用，而且对家禽红螨具有显著的杀虫活性。接触毒性生物测定中LC50值为7.3 μg/mL。在熏蒸剂毒性生物测定中，密闭容器法的死亡率最高，为72.5 %。在驱避活性生物测定和残留毒性生物测定中，当浓度为20.0 μg/cm3时，89.2% %的螨被驱避长达6 d。此外，氧化石竹烯被认为是tso中对螨具有杀虫作用的化合物。因此，氧化石竹烯与精油TESO可作为潜在的杀螨剂开发应用。

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来源期刊

Veterinary parasitology 农林科学-寄生虫学

CiteScore

5.30

自引率

7.70%

发文量

126

审稿时长

36 days

期刊介绍： The journal Veterinary Parasitology has an open access mirror journal,Veterinary Parasitology: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. This journal is concerned with those aspects of helminthology, protozoology and entomology which are of interest to animal health investigators, veterinary practitioners and others with a special interest in parasitology. Papers of the highest quality dealing with all aspects of disease prevention, pathology, treatment, epidemiology, and control of parasites in all domesticated animals, fall within the scope of the journal. Papers of geographically limited (local) interest which are not of interest to an international audience will not be accepted. Authors who submit papers based on local data will need to indicate why their paper is relevant to a broader readership. Parasitological studies on laboratory animals fall within the scope of the journal only if they provide a reasonably close model of a disease of domestic animals. Additionally the journal will consider papers relating to wildlife species where they may act as disease reservoirs to domestic animals, or as a zoonotic reservoir. Case studies considered to be unique or of specific interest to the journal, will also be considered on occasions at the Editors'' discretion. Papers dealing exclusively with the taxonomy of parasites do not fall within the scope of the journal.