oa African Zoology - Reproductive biology of Chamaeleo pumilus pumilus with special reference to the role of the corpus luteum. and progesterone

Volume 9, Issue 2
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



The morphology of the female reproductive tract and of the ovaries of the ovoviviparous C. pumilus was studied. Sperm storage organs were found in the vaginal region and changes in the histological appearance of the corpus luteum indicated a cyclic function similar to that found in mammals. Studies with C labelled leucine suggested that amino acid transfer occurred between the mother and the embryos. A radio-immuno assay of the progesterone content of the corpus luteum showed that the corpus luteum contains 56,8 ug progesterone/g of fresh luteal tissue and that the mean plasma levels of progesterone increased from 945,6 pg/ml in non-gravid to 2296,0 pg/ml in gravid females. There also appears to be a post-ovulatory surge of progesterone (4946,0 pg/ml). Oestrogens were found to stimulate the oviducal mucosa while progesterone acted synergistically with oestrogen.

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