ArticleBMC veterinary research2026
Effect of water temperature on life history traits of Radix natalensis, the intermediate host of Fasciola gigantica.
Article in BMC veterinary research, 2026. 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
backgroundRadix natalensis, a gastropod, serves as an intermediate host of Fasciola gigantica in tropical and subtropical regions, causing fascioliasis, a disease of public health and veterinary importance worldwide. Predicting disease burden requires understanding how climate change influences its life-history traits. This study investigated the effects of temperature on the life-history traits of R. natalensis. Snails were exposed to six temperature treatments (15.5 ℃, 19.5 ℃, 20.3 ℃ (control), 24.6 ℃, 29.8 ℃, and 35.1 ℃). For each treatment, 10 jars served as replicates, each containing two snails. Observations were conducted over two follow-up periods (2 weeks and 9 weeks). Data analysis was performed using repeated-measures ANOVA, the Kruskal -Wallis test, and the log-rank test.
resultsIn the first two weeks of the study, shell height was highest among snails exposed to 24.6 °C (4.14 ± 0.56 mm) and least among those at 35.1 °C (3.90 ± 0.50 mm. A significant increase in shell height was observed to be associated with the interaction between temperature and time (RM Anova F6,72 = 4.51, p < 0.001). In contrast, the effect of temperature alone was not statistically significant (RM Anova F
conclusionRadix natalensis's survival and reproductive performance are temperature-dependent, whereas snail growth is influenced by the combination of incubation conditions and time. These findings imply that temperature fluctuations will play a critical role in shaping the future transmission dynamics of fascioliasis.
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