Data from: Prenatal exposure to predation affects predator recognition learning via lateralization plasticity
Lucon-Xiccato, Tyrone, University of Padua
Chivers, Douglas P., University of Saskatchewan
Mitchell, Matthew D., University of Saskatchewan
Ferrari, Maud C. O., University of Saskatchewan
Published Sep 19, 2016 on Dryad.
Cite this dataset
Lucon-Xiccato, Tyrone; Chivers, Douglas P.; Mitchell, Matthew D.; Ferrari, Maud C. O. (2016). Data from: Prenatal exposure to predation affects predator recognition learning via lateralization plasticity [Dataset]. Dryad. https://doi.org/10.5061/dryad.b55tv
Prey with cerebral lateralization often shows a bias in escape direction and asymmetrical use of eyes for scanning. Such asymmetries are likely to cause ecological disadvantages when, for example, predators attack from the side in which the prey is more susceptible. However, lateralized individuals are diffuse in many species and, paradoxically, their frequency increases via developmental plasticity in environments with high-predation risk. Using wood frog tadpoles, Lithobates sylvaticus, we tested the hypothesis that cerebral lateralization enhances predator recognition learning and thus overcomes the costs of behavioral asymmetries in high predation risk environments. In the first experiment, we found tadpoles exposed to risk as embryos developed more intense lateralization in a rotational test compared to predator-naive controls. Risk exposure led to the more frequent development of clockwise swimming preference. In the second experiment, we found that tadpoles exhibiting no behavioral lateralization and tadpoles with marked clockwise swimming preference learned to recognize the novel predator odor, with the latter showing a better performance as predicted. Tadpoles with anticlockwise swimming preference did not learn to associate the predator with risk. Exposure to a high-risk environment during early ontogeny appears to favor the development of either a lateralization phenotype with refined predator recognition learning skills, or, to a lesser extent, a lateralization phenotype with poor predator recognition learning skills. Such individuals likely cope with predation using mechanisms other than learning.
Lucon-Xiccato et al. 2016 Behav Ecol - Data
Excel file with the data of the two experiments. Experiment 1: effect of predation risk on lateralization. Experiment 2: predator recognition learning test. Descriptive name of each variable is provided within the file.