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- W2489672395 endingPage "1551" @default.
- W2489672395 startingPage "1540" @default.
- W2489672395 abstract "Age-related changes in maternal reproductive allocation for long-lived species are a key prediction from life-history theory. Theoretical and empirical work suggests that allocation may increase with age due to constraint (increases with experience) or restraint (increases with age in the face of declining residual reproductive value), and may decrease among the oldest aged animals due to senescence in reproductive function. Here, we use a hierarchical modelling approach to investigate the age-related patterns of change in maternal reproductive effort in the Weddell seal, a long-lived marine mammal with a protracted period of maternal care during which mothers allocate a large proportion of body mass while feeding little. We find that maternal allocation increases with age for young mothers during both the pre-natal and post-natal periods. In contrast, older mothers demonstrate a senescent decline in pre-natal allocation but allocate more of their declining resources to their offspring during the post-natal period. We also find strong evidence for the importance of individual effects in reproductive allocation among mothers: some mothers consistently produce heavier (or lighter) pups than expected. Our results indicate that maternal allocation changes over a mother's reproductive life span and that age-specific differences differ in notable ways in pre-natal and post-natal periods." @default.
- W2489672395 created "2016-08-23" @default.
- W2489672395 creator A5027680128 @default.
- W2489672395 creator A5035730993 @default.
- W2489672395 creator A5044916216 @default.
- W2489672395 creator A5057109621 @default.
- W2489672395 date "2016-09-07" @default.
- W2489672395 modified "2023-10-12" @default.
- W2489672395 title "Patterns of age‐related change in reproductive effort differ in the pre‐natal and post‐natal periods in a long‐lived mammal" @default.
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