Fecundity Calculator

Calculate age-specific fecundity and reproductive parameters for population studies.

Life Table Fecundity

Age Classes (x)

Age-specific Fecundity (mx)

Survivorship (lx)

Clutch Size

Clutches/Year

Egg Survival

GRR: Σmx (total expected offspring)
R₀: Σ(lx × mx) (realized offspring)

Gross Reproductive Rate (GRR)

15.00

offspring per lifetime

Net Repro. Rate

6.580

Peak Fecundity

5.00

Realized Fecundity

4.80

Repro. Lifespan

Agemxlx×mx% R₀

32.001.50022.8%

44.002.40036.5%

55.002.00030.4%

63.000.6009.1%

71.000.0801.2%