UNILATERAL HORMONE EFFECT IN THE MARSUPIAL TRICHOSURUS VULPECULA
1963; Bioscientifica; Volume: 5; Issue: 3 Linguagem: Inglês
10.1530/jrf.0.0050447
ISSN1741-7899
Autores Tópico(s)Wildlife Ecology and Conservation
ResumoTrichosurus vulpecula Kerr (the Brush Possum) is a monovular and polyoestrous marsupial in which the two uteri are completely separate. Pilton & Sharman (1962) reported that in non-pregnant females, the uterus under the corpus luteum often exceeded the other in size. This observation formed the basis of the present investigation. In twelve females killed at 8 to 10 days post-oestrus, it was found that where the corpus luteum was on the left ovary, the left uterus averaged 19% heavier than the right, but where the corpus luteum was on the right ovary the left uterus averaged only 1% heavier than the right (see Table 1). Thus it seemed that basically the left uterus was heavier than the right (the `left side effect') and that superimposed on this was a `corpus luteum effect', whereby there was an enlargement in the uterus under the corpus luteum. Present address: Physiological Laboratory, Downing Street,
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