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dc.contributor.authorPaterson, J. Terrill
dc.contributor.authorRotella, Jay J.
dc.contributor.authorMannas, Jennifer M.
dc.contributor.authorGarrott, Robert A.
dc.date.accessioned2017-05-12T19:08:18Z
dc.date.available2017-05-12T19:08:18Z
dc.date.issued2016-09
dc.identifier.citationPaterson, John T, Jay J Rotella, Jennifer M Mannas, and Robert A Garrott. "Patterns of age-related change in reproductive effort differ in the pre-natal and post-natal periods in a long-lived mammal.." Journal of Animal Ecology 85, no. 6 (September 2016): 1540-1551. DOI:https://dx.doi.org/10.1111/1365-2656.12577.en_US
dc.identifier.issn0021-8790
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/12823
dc.description.abstractAge-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.en_US
dc.description.sponsorshipNational Science Foundation (ANT-1141326)en_US
dc.language.isoen_USen_US
dc.rightsThis is the peer reviewed version of the following article: Paterson, John T, Jay J Rotella, Jennifer M Mannas, and Robert A Garrott. "Patterns of age-related change in reproductive effort differ in the pre-natal and post-natal periods in a long-lived mammal.." Journal of Animal Ecology 85, no. 6 (September 2016): 1540-1551. DOI:https://dx.doi.org/10.1111/1365-2656.12577, which has been published in final form at https://dx.doi.org/10.1111/1365-2656.12577. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.en_US
dc.titlePatterns of age-related change in reproductive effort differ in the pre-natal and post-natal periods in a long-lived mammal.en_US
dc.typeArticleen_US
mus.citation.extentfirstpage1540en_US
mus.citation.extentlastpage1551en_US
mus.citation.issue6en_US
mus.citation.journaltitleJournal of Animal Ecologyen_US
mus.citation.volume85en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1111/1365-2656.12577en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentEcology.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage8en_US


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