The influence of food restriction and photoperiod on reproduction in male spiny mice (Acomys spinosissimus) : evidence for terminal investment?

dc.contributor.authorDe Bruin, Ruan
dc.contributor.authorGanswindt, Andre
dc.contributor.authorBennett, Nigel Charles
dc.contributor.authorMedger, Katarina
dc.contributor.emailkmedger@zoology.up.ac.zaen_ZA
dc.date.accessioned2018-04-20T07:34:59Z
dc.date.issued2018-05
dc.description.abstractPhotoperiod and food availability often interact in the regulation of reproductive development in seasonal environments. We tested the effects of a 10% food restriction and short- (SD) and long-day (LD) photoperiods on reproductive preparedness of male spiny mice (Acomys spinosissimus) from South Africa. Males were either fed ad libitum or a 10% restricted diet and on both food regimes, they were exposed to either a 14 h light:10 h dark (LD) or 10 h light:14 h dark (SD) photoperiod. Testes size, seminiferous tubule diameter and faecal androgen metabolite (fAM) concentrations were larger in food restricted males subjected to LD than in any of the other groups. SD photoperiods did not suppress reproductive development, despite earlier findings, which may be explained by “spontaneous” recrudescence due to prolonged exposure to SD. The increased development of the gonads and higher fAM concentrations observed in food restricted LD males may indicate a terminal investment strategy in male spiny mice with males investing more into reproduction in the face of reduced future survival.en_ZA
dc.description.departmentAnatomy and Physiologyen_ZA
dc.description.departmentMammal Research Instituteen_ZA
dc.description.departmentZoology and Entomologyen_ZA
dc.description.embargo2019-05-01
dc.description.librarianhj2018en_ZA
dc.description.sponsorshipThe National Research Foundation (to PRdB and NCB) and the University of Pretoria (to KM).en_ZA
dc.description.urihttp://www.elsevier.com/locate /mambioen_ZA
dc.identifier.citationDe Bruin, R., Ganswindt, A., Bennett, N.C. & Medger, K. 2018, 'The influence of food restriction and photoperiod on reproduction in male spiny mice (Acomys spinosissimus) : evidence for terminal investment?', Mammalian Biology , vol. 90, pp. 38-41.en_ZA
dc.identifier.issn1616-5047 (print)
dc.identifier.issn1618-1476 (online)
dc.identifier.other10.1016/j.mambio.2018.02.002
dc.identifier.urihttp://hdl.handle.net/2263/64667
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2018 Deutsche Gesellschaft für Säugetierkunde. Published by Elsevier GmbH. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Mammalian Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Mammalian Biology, vol. 90, pp.38-41, 2018. doi : 10.1016/j.mambio.2018.02.002. [12 months embargo]en_ZA
dc.subjectFaecal androgen metabolite (fAM)en_ZA
dc.subjectFood availabilityen_ZA
dc.subjectSeasonal breedingen_ZA
dc.subjectSeminiferous tubulesen_ZA
dc.subjectTerminal investment strategyen_ZA
dc.subjectTestesen_ZA
dc.subjectSpiny mice (Acomys spinosissimus)en_ZA
dc.titleThe influence of food restriction and photoperiod on reproduction in male spiny mice (Acomys spinosissimus) : evidence for terminal investment?en_ZA
dc.typePostprint Articleen_ZA

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