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MATERNAL TRAITS AND REPRODUCTION IN RICHARDSONS GROUND-SQUIRRELS


Metadata FieldValueLanguage
dc.contributorF. Dobson, dobsofs@auburn.eduen_US
dc.creatorDobson, F. Stephen
dc.creatorMichener, Gail R.
dc.date.accessioned2022-12-06T18:16:46Z
dc.date.available2022-12-06T18:16:46Z
dc.date.created1995
dc.identifierhttps://doi.org/10.2307/1939350en_US
dc.identifier.urihttps://esajournals.onlinelibrary.wiley.com/doi/abs/10.2307/1939350en_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50475
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-543
dc.description.abstractDifferences among conspecifics in body mass result from underlying differences in structural size and physiological condition. To determine whether the structural or physiological component of body mass has a stronger influence on reproductive traits at parturition, we studied the body composition (lean dry mass and fat content), structural size (1st principal component scores computed from 10 skeletal measurements), and body condition (residuals from regression of body mass on structural size) of yearling and older female Richardson's ground squirrels (Spermophilus richardsonii). At parturition, differences among yearlings in body mass primarily reflected differences in structural size associated with continuing structural growth. Older females appeared to reach a deterministic adult structural size, and body mass of older females was most strongly associated with body condition. Structural size of yearling females and body condition of older females had significant positive effects on litter mass. For older females, date of parturition had a significant negative influence on litter size. Both yearling and older females exhibited significant positive effects of parturition date and body condition on neonate mass. In older females, a trade-off resulted in smaller litters of heavier neonates as the breeding season progressed, perhaps reflecting the need for rapid growth of offspring before hibernation. Maternal size, maternal condition, and seasonal timing were important aspects of reproduction in Richardson's ground squirrels, but these characteristics are seldom considered concurrently in studies of life histories.en_US
dc.formatPDFen_US
dc.publisherEcological Society of Americaen_US
dc.relation.ispartofEcologyen_US
dc.relation.ispartofseries1939-9170en_US
dc.rights© 1995. This is the version of record published by John Wiley & Sons, Inc. and is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Dobson, F.S. and Michener, G.R., 1995. Maternal traits and reproduction in Richardson's ground squirrels. Ecology, 76(3), pp.851-862.en_US
dc.subjectALBERTAen_US
dc.subjectBODY MASSen_US
dc.subjectBODY CONDITIONen_US
dc.subjectLITTER SIZEen_US
dc.subjectNEONATE MASSen_US
dc.subjectPATH ANALYSISen_US
dc.subjectSPERMOPHILUSen_US
dc.subjectSTRUCTURAL SIZEen_US
dc.titleMATERNAL TRAITS AND REPRODUCTION IN RICHARDSONS GROUND-SQUIRRELSen_US
dc.typeSounden_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume76en_US
dc.citation.issue3en_US
dc.citation.spage851en_US
dc.citation.epage862en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcidhttps://orcid.org/0000-0001-5562-6316en_US

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