Figure 4

Groups of oocytes similar in yolk (x-axis – Ward's minimum distance) in relation to oocyte' sex and ovulation order in first-breeding females. A) Arizona population under mite infestation conditions (n = 72 nests), B) Montana population with > 5 critical days during oogenesis (n = 63 nests), C) Arizona population under mite free conditions (n = 99 nests), D) Montana population with ≤ 1 critical days during oogenesis (n = 34 nests). Drawings show hypothetical arrangement of oocytes in the ovary that would correspond to sex-specific clusters in A) and B) or non-sex specific hierarchical arrangement in C) and D). Vertical bars on the left side delineate significantly distinct clusters.