Data from: "Maternal effects in a wild songbird are environmentally plastic but only marginally alter the rate of adaptation" (Ramakers et al. 2017, American Naturalist). These files contain all the information needed to reproduce the analyses in the paper. CAUTIONARY NOTES: ##### (i) Recoding of IDs of individuals and broods into dummies was done within each data file seperately (except for the 'ClutchSize_heritability_data.csv' and 'Pedigree.csv' files). Since each dataset contains a different subset of data, this means that datasets cannot be combined based on the IDs. (ii) These datasets are pruned data (excluding females without ID); they cannot be used to extract general information about the population (e.g. average clutch size in a given year). ##### If you'd like to acquire additional information about the population, we strongly encourage you to contact Marcel E. Visser (m.visser@nioo.knaw.nl). THE DATA: 1. Analysis of heritability of clutch size: # Data file 'ClutchSize_heritability_data.csv' - ClutchSize: an individual's clutch size - AgeClassFemale: Y = young (first-time breeder); O = old (any bird aged beyond the second calendar year) - centred.ld: laying date, centred around the annual mean - Year: year of breeding - Nestbox: nest box ID - FemaleID: ID of the female laying the clutch - FemalesMother: ID of the laying female's mother # Data file 'Pedigree.csv' (note that this file is only compatible with 'ClutchSize_heritability_data.csv'!) - id: ID of individual (FemaleID) - sire: the individual's (social) father - dam: the individual's mother 2. Analysis of survival based on fledgling weight Note that the options nAGQ=0 and control=glmerControl(optimizer = "nloptwrap") are needed in the glmer() model to reach convergence. # Data file 'Survival_Weights.csv' - Survival: whether a chick recruited (1) or not (0) into the breeding population - Weight15: a chick's weight at day 15 (fledgling weight) - Year: year of breeding - BroodID: the ID of a brood 3. Effect of (manipulated) maternal clutch size on fledgling weight # Data file 'Manipulated_Weights.csv' - FemaleID: ID of the female whose clutch was manipulated - BroodID: ID of the female's current brood - Year: year of breeding - BSAM: brood size after manipulation - c.BSAM: BSAM centred around the annual mean - c.CS: original clutch size, centred around the annual mean - c.HatchDay: hatch date of chicks, centred around the annual mean - Weight: weight (at day 15) of an individual chick in the nest - p.Weight: probit-transformed weight [(Weight-5.5)/(22.5-5.5), with 5.5 and 22.5 being the lower and upper boundary, respectively] - logit.Weight: logit-transformed weight [log(p.Weight/(1-p.Weight))] 4. Effect of fledgling weight and maternal CS on offspring CS (i.e. maternal effect) # Data file 'MaternalEffect.csv' - Year: year of breeding (t) - ClutchSize: a female's current clutch size (i.e. offspring clutch size) - c.ClutchSize: a female's current clutch size, centred around the annual mean (to make the response, i.e. the maternal effect component of the phenotype, relative to 0) - c.FledWeight: a female's weight as a fledgling (in year t-1), centred around the annual mean - PBV: a female's predicted breeding value for clutch size (estimated from the animal model using the data in 'ClutchSize_heritability_data.csv') - m.FledWeight: mean fledgling weight of the population in year t as a measure of the environment - c.MaternalCS: clutch size of the focal female's mother, centred around the annual mean