Fig. 2.

Genome-wide plot of percentage of genetic variance for traits measured during heat stress. Traits were measured before heat treatment (day 20) and during heat treatment (day 28), and the differentials were also calculated (day 28-20). The traits that reached significance in the GWAS (≥0.05 % of the genetic variation) are displayed. Results show the percentage of genetic variance that is explained by each non-overlapping 1-Mb window, labeled by the index number of the windows, and are colored and ordered by chromosome (1 to 28, and Z). Plots display: pH on days 20 and 28, and the differential 28–20 (a, b, and c); partial CO₂ (pCO₂) on days 20, 28, and the differential 28–20 (d, e, and f); partial O₂ (pO₂) on day 28, (g); base excess on day 20 and day 28, (h and i); bicarbonate (HCO₃) on day 28 (j); total CO₂ (TCO₂) on day 28 and the differential 28–20 (k and l); potassium (K) on days 20 and the differential 28–20 (m and n); ionized calcium (iCa) on day 28 (o); hematocrit (Hct) on day 28 (p); hemoglobin (Hb) on day 28 and the differential 28–20 (q and r); saturated oxygen (SO₂) on day 28 and the differential (s and t); glucose on days 20 and 28 (u and v)