Parity rates and daily survival rates on sampled populations.

The daily survival rate (p) was calculated using the parous rate (M) and the time of the first gonotrophic cycle (i0) with the formula p = M∧(1/i0).

日存活率（daily survival rate，记为p）可通过经产率（parous rate，记为M）以及首次生殖营养周期（gonotrophic cycle）的时长（记为i0），按照公式p = M^(1/i0)计算得出。