DOI: 10.5061/dryad.pzgmsbcw5
title: Data from: Diet-induced plasticity modifies relationships between larval growth rate and post-metamorphic behavior and physiology

description: It has frequently been hypothesized that among-individual variation in
 behavior and physiology will correlate with life history traits, yet the
 nature of these correlations can vary. Such variability may arise from
 plasticity in trait development, which can amplify or attenuate trait
 correlations across different environments. Using the Mexican spadefoot
 toad (Spea multiplicata), we tested whether relationships between larval
 growth rate and post-metamorphic behavior or physiology are influenced by
 a key mediator of developmental plasticity: larval diet type. S.
 multiplicata larvae develop on two alternate diets, with slower growing
 omnivores feeding on detritus and faster growing carnivores consuming live
 fairy shrimp. We found that correlations between larval growth rate and
 post-metamorphic behavior and physiology differed by diet type. Among
 detritus feeders, faster growing larvae developed into juvenile frogs that
 were not only bolder but also had higher hypothalamic-pituitary-interrenal
 axis reactivity (an indicator of stress responsiveness) and longer
 telomeres, suggesting greater somatic maintenance. In contrast, among
 shrimp feeders – which exhibited faster growth overall – larval growth
 rate was less strongly correlated with juvenile behavior and physiology,
 indicating that a shift from omnivory to carnivory can attenuate trait
 correlations among individuals. Overall, our study suggests that
 developmental plasticity induced by different diet types can modify
 relationships between life history traits and individual behavior or
 physiology.
description: Data generated from a manipulative lab experiment.
description: # Data from: Diet-induced plasticity modifies relationships between larval
 growth rate and post-metamorphic behavior and physiology
 [https://doi.org/10.5061/dryad.pzgmsbcw5](https://doi.org/10.5061/dryad.pzgmsbcw5) ## Description of the data and file structure **Treatment and identification data:** ID: Identification number for each individual frog family: Full-sibling family that each individual belongs to diet: Dietary treatment that each individual was reared under during larval development  CORT_treatment: identifies whether CORT hormone concentration was measured under "baseline" or "stress_induced" conditions **Life history data:**  time_to_tail_resorption: number of days between assignment of larva to dietary treatment and date of tail resorption (units: days) mass_at_tail_resorption: mass on date of tail resorption (units: grams) juvenile_growth_rate: (mass_at_tail_resorption) divided by (time_to_tail_resorption)  mass_at_behavioral_assay: mass measured prior to behavioral and CORT assays (units: grams) mass_at_dissection: mass measured prior to dissection for telomere assay (units: grams) tail_resorption_date: date on which tail resorption was recorded  **Behavioral data:**  Latency: latency to move (units: seconds)  Suc_strike: number of successful strikes at prey items  Unsuc_strike: number of unsuccessful strikes at prey items  Wall_strike: number of strikes at wall of assay Total_prey_strike: total number of strikes at prey items  Total_distance: total distance travelled (units: millimeters) Exp_rate: exploration rate (number of areas explored over time)  **Physiological data:**  CORT_conc: waterborne corticosterone concentration measured under either baseline or stress-induced conditions (units: nanograms per milliliter) norm_CORT_reactivity: corticosterone reactivity, measured as stress-induced CORT production relative to baseline CORT production  T_S_ratio: measure of relative telomere length \**Description of N/A values: ** All N/A values represent data that is not available.