Fig. 4.
Heat tolerance of Steinernema carpocapsae sib-crosses and outcrosses. Heat tolerance of sib-crosses (gray bars) and outcrosses (white bars) after exposure to moist 37 °C heat for 6 h. Tolerance is reported on the y-axis as percent survival of exposed nematodes as detected by gentle prodding with a blunt glass probe 24 h after removal from heat. Letters over each bar indicate statistically significant differences between the heat tolerance of a given line and all other lines assayed at α = 0.05. Error bars indicate 1 S.D. from the average of the assayed line.