CYTOLOGIA
Online ISSN : 1348-7019
Print ISSN : 0011-4545
Chromosome Studies in Some Deer, the Springbok, and the Pronghorn, with Notes on Placentation in Deer
Doris H. WursterKurt Benirschke
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JOURNAL FREE ACCESS

1967 Volume 32 Issue 2 Pages 273-285

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Abstract

The chromosome complement has been studied in the following six species, all members of the Artiodactyla: Virginia white-tailed deer (Odocoileus virginianus borealis, 2n=70), mule deer (Odocoileus hemionus, 2n=70), fallow deer (Dama dama, 2n=68), muntjac (Muntiacus reevesi, n=46), pronghorn (Antilocapra americana, 2n=56 and 58), and springbok (Antidorcas marsupialis, 2n=56). Karyotypes of each species have been presented, with a discussion on hybridization of the species.
Placentation in the white-tailed deer has been briefly described. Placental anatomy and chromosomes from leucocyte cultures of opposite-sexed white-tailed deer twins were investigated with particular interest as to the possible existence of chimerism, and freemartin effects as a cause of antler growth in does. No evidence for a common circulation between the twins was found.

Die Chromosomenzahl von sechs Arten der Artiodactyla wird berichtet; die nordamerikanischen Rehe Odocoileus virginianus (2n=70) and O. hemionus (2n=70), ferner Dama dama (2n=68), Muntiacus reevesi (2n=46), Antilocapra americana (2n=58) and der südafrikanische Springbock (Antidorcas marsupialis 2n=56). Die Bastardisierung dieser Tiere wird kurz besprochen und die Placentation des weissschwanz Rehes beschrieben. Diese Art hat häufig verschiedengeschlechtige Zwillinge, jedoch wurden interplacentare Anastomosen und Blutchimärismus nicht gefunden. Somit kann ein Zwickeneffekt nicht die Ursache für den gelegentlichen Befund des Geweihwachstums dieser Rehe sein.

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© The Japan Mendel Society
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