ArticleFrontiers in veterinary science2025
Susceptibility to metazoan parasite infection in amphimictic diploid and induced triploid tench (
Article in Frontiers in veterinary science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Artificial induction of polyploidy in fishes is a widely used method in commercial aquaculture due to its economic potential and its association with changes in cell morphology and physiology that can significantly affect individual fitness. Using tench ( Methods: Amphimictic diploid and induced triploid specimens collected from a breeding pond were examined during four sampling events over the course of one year, focusing on the presence of metazoan parasites and selected fish condition, physiological, and immune parameters. Results: Diploids generally exhibited a higher overall parasite load than triploids throughout the year; however, this difference was statistically significant only in summer, coinciding with the extremely high abundance of the tench-specific Discussion: The differences in parasite infection between triploid and diploid tench and the associations between parasite load and condition- and health-related traits may be explained by (1) presumed higher heterozygosity in triploids, (2) physiological differences related to cell size and number of cells in key organs and tissues, (3) variation in feeding performance, and (4) host-parasite coevolutionary interactions.
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