Postzygotic Isolation Evolves before Prezygotic Isolation between Fresh and Saltwater Populations of the Rainwater Killifish, Lucania parva
Figure 3
L. parva survival differences with methylene blue addition. Mean survival probabilities (+ standard error) for Pecos River, Indian River, and Indian-Pecos hybrid crosses in fresh water (KH8) and salt water (20 ppt) with methylene blue addition (gray bars) and without (white bars). Arrows indicate mean survival probability of zero. (a) The proportion of eggs hatched, (b) proportion of fry that survived to 14 days after hatch, (c) total survival (proportion of eggs that survived to 14 days after hatch).
