Costs of reproduction and terminal investment by females in a semelparous marsupial.

There was a marginally non-significant tendency for first litters of iteroparous females to develop more slowly than litters of semelparous females (age at eye opening 66±0.8 days in first litters, 64±0.8 days in both second litters and offspring of semelparous mothers; overall model: F 2,29 = 1.7, P = 0.19, difference in age at eye opening between litters with semelparous mothers and first litters of iteroparous mothers: t = −1.9, df = 29, P = 0.07; difference between first and second litters of iteroparous mothers t = −1.2, df = 29, P = 0.24).

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