Reproductive suppression in subordinate, non-breeding female Damaraland mole-rats: two components to a lifetime of socially induced infertility
1996; Royal Society; Volume: 263; Issue: 1376 Linguagem: Inglês
10.1098/rspb.1996.0234
ISSN1471-2954
AutoresNigel C. Bennett, Chris G. Faulkes, A. J. Molteno,
Tópico(s)Animal Behavior and Reproduction
ResumoRestricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Bennett N. C. , Faulkes C. G. and Molteno A. J. 1996Reproductive suppression in subordinate, non-breeding female Damaraland mole-rats: two components to a lifetime of socially induced infertilityProc. R. Soc. Lond. B.2631599–1603http://doi.org/10.1098/rspb.1996.0234SectionRestricted accessArticleReproductive suppression in subordinate, non-breeding female Damaraland mole-rats: two components to a lifetime of socially induced infertility N. C. Bennett Google Scholar Find this author on PubMed Search for more papers by this author , C. G. Faulkes Google Scholar Find this author on PubMed Search for more papers by this author and A. J. Molteno Google Scholar Find this author on PubMed Search for more papers by this author N. C. Bennett Google Scholar Find this author on PubMed , C. G. Faulkes Google Scholar Find this author on PubMed and A. J. Molteno Google Scholar Find this author on PubMed Published:22 November 1996https://doi.org/10.1098/rspb.1996.0234AbstractThe Damaraland mole-rat Cryptomys damarensis exhibits an extreme reproductive division of labour. Reproduction in the colony is restricted to a single breeding pair, resulting from a two-fold control: (i) a reduced pituitary synthesis and/or secretion of luteinizing hormone leading to a block to ovulation in non-reproductive females; and (ii) a strong inhibition to breeding with familar kin. Circulating basal concentrations of luteinizing hormone as well as luteinizing hormone levels measured in response to a single exogenous gonadotrophin releasing hormone challenge, were significantly lower in non-reproductive females in the presence of the reproductive female than those in colonies lacking a reproductive female. Urinary progesterone concentrations before the removal of the reproductive female were significantly higher in non-reproductives than the post removal values. Behavioural studies from sib-sib and non-sib pairings provide evidence for a strong incest avoidance, probably resulting from an inhibition of breeding with familiar colony members. A total of four pairings of non-sibs resulted in copulatory activity and eventual conception. In contrast, four couples of sib-sib combinations failed to produce any sexual activity or offspring. Thus, suppression of reproduction in these non-reproductive, subterranean bathyergids is complicated by the masking effect of familiarity that prevents incest, in addition to the physiological inhibition of fertility in the presence of the reproductive female.FootnotesThis text was harvested from a scanned image of the original document using optical character recognition (OCR) software. As such, it may contain errors. Please contact the Royal Society if you find an error you would like to see corrected. Mathematical notations produced through Infty OCR. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited byHart D, Bennett N and Voigt C (2022) Social stress is unlikely to play a major role in reproductive suppression of female subordinate naked mole-rats and Damaraland mole-rats, Biology Letters, 18:10, Online publication date: 1-Oct-2022. de Boer R, Vega-Trejo R, Kotrschal A and Fitzpatrick J (2021) Meta-analytic evidence that animals rarely avoid inbreeding, Nature Ecology & Evolution, 10.1038/s41559-021-01453-9, 5:7, (949-964), Online publication date: 1-Jul-2021. Voigt C, Medger K and Bennett N (2021) The oestrous cycle of the Damaraland mole‐rat revisited: evidence for induced ovulation, Journal of Zoology, 10.1111/jzo.12860, 314:2, (85-95), Online publication date: 1-Jun-2021. 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This Issue22 November 1996Volume 263Issue 1376 Article InformationDOI:https://doi.org/10.1098/rspb.1996.0234PubMed:8952096Published by:Royal SocietyPrint ISSN:0962-8452Online ISSN:1471-2954History: Manuscript received11/06/1996Manuscript accepted05/08/1996Published online01/01/1997Published in print22/11/1996 License:Scanned images copyright © 2017, Royal Society Citations and impact Large datasets are available through Proceedings B's partnership with Dryad
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