Table 2 Regional estimates of periodicity, susceptible recruitment rates (SR), population size, change in periodicity (∆ Periodicity), change in susceptible recruitment rates (∆ SR) and evidence for resurgence during the last 20 years
Region | Periodicity (1952–1974) | SR (1952–1974) | Population size (1952–1974) | SR (1975–1995) | Population size (1975–1995) | Periodicity (1975–1995) | ∆ SR | ∆ Periodicity | Resurgence |
|---|---|---|---|---|---|---|---|---|---|
I | 2 | 25.96 | 163517.8 | 19.23 | 411448.6 | 4.00 | 6.7 | 2 | N |
II | 4 | 25.59 | 271331.9 | 19.80 | 502683.1 | 4.00 | 5.8 | 0 | N |
III | 2 | 27.76 | 162502.6 | 19.20 | 258547.6 | 2.50 | 8.6 | 0.5 | N |
IV | 2.7 | 26.23 | 370382.1 | 17.75 | 623274.8 | 4.00 | 8.5 | 1.3 | Y |
V | 2.5 | 23.89 | 923194.1 | 15.85 | 1570163.6 | 4.00 | 8.0 | 1.5 | Y |
RM | 2 | 25.83 | 3205838.7 | 17.10 | 6146877.5 | 4.00 | 8.7 | 2 | Y |
VI | 2 | 25.78 | 494354.9 | 17.08 | 803304.7 | 4.00 | 8.7 | 2 | Y |
VII | 3.3 | 25.86 | 659515.4 | 16.34 | 928979.4 | 4.00 | 9.5 | 0.7 | Y |
VIII | 2.5 | 26.96 | 1309030.7 | 16.28 | 1900525.4 | 4.00 | 10.7 | 1.5 | Y |
IX | 5 | 20.86 | 640086.6 | 16.15 | 885620.9 | 4.00 | 4.7 | -1 | N |
X | 4.5 | 23.08 | 787471.2 | 17.23 | 1064571.9 | 4.00 | 5.9 | -0.5 | Y |
XI | 3.5 | 25.03 | 50443.3 | 17.64 | 93718.0 | 1.00 | 7.4 | -2.5 | Y |
XII | 4 | 21.46 | 89211.4 | 15.08 | 151265.6 | 1.00 | 6.4 | -3 | Y |