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Table 1 Variation in apparent pregnancy rates of Japanese and South African false killer whales with age

From: Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens

Age class (lower bound) Pregnant Pregnant a Total mature Pregnant /Total
  JP SA Both JP SA Both JP SA Both JP SA Both
8.25 1 0 1 0 0 0 4 2 6 0.25 0.00 0.17
14.25 3 1 4 0 0 0 11 3 14 0.27 0.33 0.29
20.25 3 0 3 1 1 2 8 2 10 0.50 0.50 0.50
26.25 1 0 1 0 2 2 6 5 11 0.17 0.40 0.27
32.25 0 0 0 1 0 1 7 5 12 0.14 0.00 0.08
38.25 2 0 2 0 0 0 8 5 13 0.25 0.00 0.15
44.25 0 0 0 0 0 0 3 5 8 0.00 0.00 0.00
50.25 0 0 0 0 0 0 7 3 10 0.00 0.00 0.00
56.25 0 0 0 0 0 0 3 3 5 0.00 0.00 0.00
Total 10 1 0 2 3 5 57 32 89 - - -
  1. Labels Pregnant and Pregnant a are used to denote the presence of a foetus, and no foetus but corpus luteum ≥ 3.93mm thick, respectively (see Methods)