Figure 1. A summary of the experiments used to investigate N. nepalensis’s fundamental and realized thermal performance curves (TPCs).
We examined locomotor and breeding performance in the lab and field without competitors to determine the fundamental TPC. We examined breeding performance in the field in the presence of interspecific competitors to determine the realized TPC. We also manipulated group size in the field to determine how cooperation influenced the realized TPC. The results of these experiments are depicted in Figures 3–5.
Figure 1—figure supplement 1. The relationship between fundamental and realized thermal performance curves between two competing species.
(a) Fundamental and (b) realized thermal performance curves (TPC) when a high temperature specialist species (blue lines) competes with a low temperature generalist species (orange lines). Toptimal represents the optimal temperature of the TPCs, as shown by vertical dashed lines. The horizontal dashed line represents the relative performance of the two species, which are equal to each other.
Figure 1—figure supplement 2. A summary of the theoretical and empirical data.
