Thermal plasticity in development and diapause strategy in a temperate butterfly across a latitudinal gradient

Trade-offs among traits are central to life-history theory and often closely linked to an organism’s fitness. Understanding how these trade-offs vary among populations and across environments is therefore important to more accurately predict species’ responses to future climate change. However, the extent to which responses vary across populations remains unknown because few studies investigate intraspecific differences. 
We performed a full-factorial split-brood common garden experiment to test how variation in rearing temperature affects developmental timing and other traits important for survival during diapause in the Glanville fritillary butterfly (Melitaea cinxia). Pre-diapause larvae originating from four regions across a latitudinal cline across Europe were reared at four temperatures (25, 28, 31, and 34 °C), and we used a reaction norm approach to test for evidence of genetic differentiation and variation in developmental plasticity across regions.
We found clear signs of gene..., , , # Data from: Thermal plasticity in development and diapause strategy in a temperate butterfly across a latitudinal gradient (Verspagen et al., Functional Ecology)

These datasets contain all data and code used in the analyses of this manuscript.

## Description of the data and file structure

Data files (.csv) are named as \"NameYear\"\_\"DataIdentifier\".csv

Column title abbreviations are largely self-explanatory.

More specific details for each dataset:

Verspagen2023\_ClutchData.csv:

In this file we record the development of the experimental group as a whole every four days.

The first five columns together form a unique identifier for each experimental group. They contain information on the location of origin (Origin), family (Female.ID), Clutch (Clutch.ID), Temperature and replicate. The next column shows whether the experiment was done in 2020 (Finland, Estonia and Spain) or 2022 (Finland2 and Belgium).

The Day column identifies which day since the second instar (i.e. start of expe...