Experimental investigation of the effect of tebuconazole on three biomarkers of innate immunity in the house sparrow (Passer domesticus).

Autor: Bellot P; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France. Pauline.bellot@cebc.cnrs.fr., Bichet C; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France., Brischoux F; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France., Fritsch C; Laboratoire Chrono-Environnement, UMR 6249 CNRS, Université de Franche-Comté, F-25000, Besançon, France., Hope SF; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France.; Department of Psychology, Hunter College, City University of New York, New York, NY, 10065, USA., Quesnot A; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France., Angelier F; Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France.
Jazyk: angličtina
Zdroj: Ecotoxicology (London, England) [Ecotoxicology] 2024 Jan; Vol. 33 (1), pp. 119-129. Date of Electronic Publication: 2024 Jan 20.
DOI: 10.1007/s10646-024-02732-4
Abstrakt: Triazoles are among the most widely used fungicides in the world due to their efficacy against fungal crop diseases and their broad spectrum of action. Intensive use of triazoles has resulted in residual contamination in different compartments of agroecosystems and exposes non-target species to potential sublethal effects. Triazoles are known to be immunomodulators in medicine and therapeutic treatments, but very little data is available on their potential effect on immune parameters of non-target vertebrate species living in agroecosystems. In this study, we experimentally examined the impact of tebuconazole on three immune biomarkers (haemagglutination titre (HA), haemolysis titre (HL), and haptoglobin concentration (Hp)), as well as on the body condition of house sparrows (Passer domesticus). Our results suggest that tebuconazole had very little, if any, effect on the studied immune parameters. However, further studies are needed to better assess the effect of tebuconazole on bird immunity because (1) experimental individuals were kept under optimal conditions and the impact of tebuconazole on immunity may occur under suboptimal conditions, (2) only one concentration of tebuconazole was tested and its effect could be dose-dependent and (3) other complementary immunological biomarkers should be studied, given the complexity of the vertebrate immune system. Current knowledge on the potential effects of triazoles on the immunity of wild farmland vertebrates is still largely insufficient. Further physiological and immune studies should be conducted to better understand the effect of triazole fungicides on farmland birds.
(© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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