Placentation in the Hottentot Golden Mole, Amblysomus hottentotus (Afrosoricida: Chrysochloridae)

dc.contributor.authorJones, C.J.P.
dc.contributor.authorCarter, A.M.
dc.contributor.authorBennett, Nigel Charles
dc.contributor.authorBlankenship, T.N.
dc.contributor.authorEnders, A.C.
dc.date.accessioned2009-09-17T07:41:55Z
dc.date.available2009-09-17T07:41:55Z
dc.date.issued2009
dc.description.abstractThe placentation of the Hottentot golden mole (Amblysomus hottentotus) has been examined using light and electron microscopy and lectin histochemistry of nine specimens at both mid and late gestation. The placentae were lobulated towards the allantoic surface and the lobules contained roughly parallel arrays of labyrinthine structures converging on a central spongy zone. At mid gestation, the arrays were composed of an inner cellular and outer syncytial trophoblast layer, the inner layer enclosing scant connective tissue and fetal capillaries. Maternal blood spaces coursed through the outer trophoblast and were lined by trophoblastic microvilli; the blood spaces were narrow in mid gestation but enlarged near term, while the inner trophoblast layer became thinner and seemed to be syncytial. These features were confirmed by transmission electron microscopy. The microvillous surfaces and dispersed cytoplasmic particles were heavily glycosylated, as shown by lectin histochemistry, and exhibited changes with maturation, particularly a loss in N-acetyl glucosamine oligomers bound by Phytolacca americana lectin on the microvilli lining the maternal blood spaces and outer trophoblast particles. A substantial yolk sac was present both in mid and late gestation stages. It was clearly unattached to the uterus in the later stages. These morphological features are discussed in relation to the phylogenetic position of Amblysomus with respect to other members of Afrosoricida and Afrotheria.en_US
dc.identifier.citationC.J.P. Jones et al. ‘Placentation in the Hottentot Golden Mole, Amblysomus hottentotus (Afrosoricida : Chrysochloridae)’, Placenta 30 (2009) 571–578, doi:10.1016/j.placenta.2009.04.014en_US
dc.identifier.issn0143-4004
dc.identifier.other10.1016/j.placenta.2009.04.014
dc.identifier.urihttp://hdl.handle.net/2263/11293
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rightsElsevieren_US
dc.subjectAfrosoricidaen_US
dc.subjectAmblysominaeen_US
dc.subjectChrysochloridaeen_US
dc.subjectHaemochorial placentationen_US
dc.subjectLectin histochemistryen_US
dc.subjectYolk sacen_US
dc.subject.lcshGolden moles -- South Africaen_US
dc.titlePlacentation in the Hottentot Golden Mole, Amblysomus hottentotus (Afrosoricida: Chrysochloridae)en_US
dc.typePostprint Articleen_US

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