DOI: 10.5061/dryad.d7wm37q94
title: Data from: Predation risk elicits a negative relationship between boldness and growth in Helisoma snails

description: The relationship between risk-prone behavior and growth is central to
 tradeoff models that explain the existence and maintenance of
 among-individual variation in behavior (i.e., animal personality). These
 models posit positive relationships between among-individual variation in
 risk-prone behaviors and growth, yet how the strength and direction of
 such relationships depend on ecological conditions is unclear. We tested
 how different levels of predation risk from crayfish (Faxonius limosus)
 mediate the association between among-individual variation in snail
 (Helisoma trivolvis) boldness (emergence time) and growth in shell size.
 We found that crayfish predation risk reduced snail growth, but that the
 effect of snail boldness on individual growth was context-dependent –
 snail boldness was unrelated to growth in the absence of risk and under
 high risk, but shy snails grew faster than bold snails under low predation
 risk. Other traits (snail size, body condition and intrinsic growth rate
 under ad libitum food conditions) failed to explain snail growth variation
 under any risk level. Though opposite to the prediction of tradeoff
 models, enhanced growth of shy snails could function as a predator defense
 mechanism that protects their prospects for future reproduction consistent
 with the underlying premise of tradeoff models. Thus, our results
 highlight the importance of accounting for ecological conditions in
 understanding behavior-life history associations.
description: Description of methods and data processing can be found in the
 associated article and the supplementary material for the
 article. 
description: # Data from: Predation risk elicits a negative relationship between
 boldness and growth in Helisoma snails Data table description *
 individual: individual unique identifier. * trial: trial order for each
 individual in the behavioral type experiment. * behav.treat: treatment
 unique identifier in the behavioral type experiment. * growth.treat:
 treatment unique identifier in the growth experiment. * length.1: body
 length (mm) before the behavioral type experiment. * length.2: body length
 (mm) between the behavioral type experiment and the growth experiment. *
 length.3: body length (mm) after the growth experiment. * tank: tank
 unique identifier during the growth experiment. * growth0: growth rate
 during the behavioral type experiment. * growth: growth rate during the
 growth experiment. * delta_size0: body length increment (mm) per week
 during the behavioral type experiment. * delta_size: body length increment
 (mm) per week during the growth experiment. * emergence: emergence time
 (s) during the behavioral type experiment. * bodysize: body length (mm)
 before the growth experiment. * mass: body mass (g) before the growth
 experiment. Note on empty cells - This data set includes all snails (n =
 100) for which behavioral data was collected. Ninety of these snails were
 used in a separate growth rate experiment, hence the missing growth data
 for 10 individuals. Other individuals (n = 10) were removed prior to the
 analysis described in the accompanying article (Toscano et al. 2024,
 Behavioral Ecology).