Phenotypic plasticity for sailfin mollies raised at two temperatures and three salinities

Phenotypic plasticity, the ability of a single genotype to produce different phenotypes under different environmental conditions, plays a profound role in several areas of evolutionary biology.  However, it is unclear how much reaction norms vary among conspecific populations and whether differences in reaction norms represent adaptations to different levels of environmental variation.  We present data on the reaction norms of growth and maturation to variation in temperature and salinity in sailfin mollies (Poecilia latipinna) from three populations from South Carolina (SC).  This area is the northern edge of the species range and we compare these reaction norms to those previously reported in populations from north Florida (NF), which is the center of the species range.  In general, fish from SC displayed less plasticity than fish from NF because they grew faster and matured earlier at the lower temperatures and salinities compared to NF fish.  Among fish from both regions, males were..., These data were collected from the F1 progreny of wild-caught fish raised in the laboratory under one of six combinations of two temperatures and three salinities.  This dataset comprises all of the raw data from these rearings., , # Data from: Phenotypic plasticity for sailfin mollies raised at two temperatures and three salinities

[https://doi.org/10.5061/dryad.mw6m90645](https://doi.org/10.5061/dryad.mw6m90645)

The data consist of records of individual fish from three different populations of origin raised in the laboratory. Each line or record describes one fish's history from parturition to maturation. In the experiment we raised fish under all combinations of two temperatures (24 or 29 degrees C) and three salinities (2, 12, or 20 parts per thousand). Each fish was raised individually in a 38 liter aquarium. We drew fish from three natural populations in South Carolina (Goat Island, Boundary, and Yawkey) and recorded where in the laboratory each fish's aquarium was placed (BAY) and its family identity (FAM, denoting progeny of a single female).

## Description of the data and file structure

The variables are:

ORIG: Individual population of origin. Entries are 1, 2, or 3, with 1 = Goat Island; 2 = Bo...