DOI: 10.5061/dryad.547d7wm9n
title: Data from: Life histories as mosaics: plastic and genetic components differ among traits that underpin life-history strategies

description: Life-history phenotypes emerge from clusters of traits that are the
 product of genes and phenotypic plasticity. If the impact of the
 environment differs substantially between traits, then life histories
 might not evolve as a cohesive whole. We quantified the sensitivity of
 components of the life history to food availability, a key environmental
 difference in the habitat occupied by contrasting ecotypes, for 36 traits
 in fast-and slow-reproducing Trinidadian guppies. Our dataset included six
 putatively independent origins of the slow-reproducing, derived ecotype.
 Traits varied substantially in plastic and genetic control. Twelve traits
 were influenced only by food availability (body lengths, body weights),
 five only by genetic differentiation (inter-birth intervals, offspring
 sizes), ten by both (litter sizes, reproductive timing), and nine by
 neither (fat contents, reproductive allotment). Ecotype-by-food
 interactions were negligible. The response to low food was aligned with
 the genetic difference between high- and low-food environments, suggesting
 that plasticity was adaptive. The heterogeneity among traits in
 environmental sensitivity and genetic differentiation reveals that the
 components of the life history may not evolve in concert. Ecotypes may
 instead represent mosaics of trait groups that differ in their rate of
 evolution.
description: Please find this information in the manuscript and supporting
 information.
description: This file contains the ancestral drainage and locality, ecotype,
 experimental food treatment, maternal identity, sex, and measured
 life-history traits of 1178 second-generation laboratory-reared
 Trinidadian guppies. It also specifies the dataset each individual was
 part of. While 33 traits were analysed in the manuscript (focal traits),
 eleven merely served to compute the focal traits and were not analysed
 themselves. A number of values were set to NA because they may contain
 measurement errors (i.e., negative values for fat contents and inter-birth
 intervals): 1 for somfat, 1 for fat, 4 for mnembfat1, 9 for mnembfat2, 19
 for mnembfat3, and 1 for intrvl2. Please read the README file that
 accompanies the data file; it explains the column headers. Additional
 information can be found in Table 3 in the main manuscript, as well as in
 the Supporting Information. The ecotype designation of
 populations is based on an assessment of the predator communities at each
 locality, with high-predation sites being characterised by a fast pace of
 reproduction and low-predation sites by a slower pace. Assessments of
 localities as being either high- or low-predation were based on visual
 censuses made when the guppy progenitors for the fish in our experiments
 were collected. On the south-slope rivers (El Cedro – dataset 1, Oropuche
 – dataset 4) many of the predators are diurnal and easily enumerated. On
 the north-slope rivers (Curaguate, Madamas, Marianne, Paria, Yarra –
 datasets 2, 3, and 4) the gobies (<i>Gobimorous dormitor</i>
 and <i>Eleotris pisonis</i>) are key fish predators that are
 crepuscular or nocturnal and hence may not be seen during censuses
 performed during the day. The mountain mullet (<i>Agonostomus
 monticula</i>) is readily seen during the day. Its presence was
 often treated as diagnostic of a high-predation community. Recent, more
 detailed assessments of the fish communities of the Marianne River
 revealed that the upstream limit of the gobies was downstream from what
 were designated as high-predation localities in our research, which casts
 some doubt on the high- versus low-predation designations in this stream.
 We have few formal estimates of guppy mortality rates in the north-slope
 streams comparable to those done in south-slope streams, where these
 estimates complement visual censuses by demonstrating higher guppy
 mortality rates in high-predation communities. More field work is required
 to fully characterise the fish communities in the north slope streams,
 which is why some of the datasets used here were previously
 unpublished.