Show simple item record

dc.contributor.authorMedger, K.
dc.contributor.authorChimimba, C.T.
dc.contributor.authorBennett, N.C.
dc.date.accessioned2017-01-25T09:15:26Z
dc.date.available2017-01-25T09:15:26Z
dc.date.issued2016
dc.identifier.citationMedger, K.; Chimimba, C.T.; Bennett, N.C. (2016) Is reproduction of male eastern rock sengis (Elelphantulus myurus) from southern Africa affected by photoperiod? Canadian Journal of Zoology, 94(11): 747-752en
dc.identifier.issn0008-4301en
dc.identifier.urihttp://hdl.handle.net/123456789/2138
dc.description.abstractMany mammals use the change in day length to time physiological and behavioural activities on a seasonal basis. Particularly, mammals from temperate regions use photoperiod to regulate reproductive functions; however, information on the role of photoperiod in small mammals from the tropics and subtropics is scarce. We studied the response of the reproductive system of male eastern rock sengis (Elephantulus myurus Thomas and Schwann, 1906) from southern Africa to photoperiods of differing length. Elephantulus myurus breeds seasonally during the spring and summer months of the southern hemisphere despite its subtropical distribution. It is one of only three sengi species known to breed seasonally. Fourteen male E. myurus were subjected to either long-day (LD; 16 h light (L) : 8 h dark (D)) or short-day (SD; 8 h L : 16 h D) photoperiods and the photoperiodic effects on the testes, testosterone concentration, and body mass were examined. Testicular volume and mass, seminiferous tubule diameter, and body mass were not significantly different between LD and SD conditions. However, plasma testosterone concentration was significantly lower in males on LD photoperiods compared with SD photoperiods. Male E. myurus may not use photoperiod as a cue to control seasonal reproductive changes. Other environmental factors such as temperature, rainfall, food abundance, or social factors are possibly influencing seasonal reproduction in this species.en
dc.format.extent320122 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherNRC Research Pressen
dc.subjectElephantulus myurusen
dc.subjecteastern rock sengien
dc.subjectday lengthen
dc.subjectseasonal reproductionen
dc.subjectenvironmental cuesen
dc.subjectMacroscelideaen
dc.subjectsouthern Africaen
dc.titleIs reproduction of male eastern rock sengis (Elelphantulus myurus) from southern Africa affected by photoperioden
dc.typeJournalArticlesen
dc.cibjournalCanadian Journal of Zoologyen
dc.cibprojectNAen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record