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The Pituitary Gland.
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 1938 |
| Abstract | Marsupial reproductive patterns include several unique features which suggest that true viviparity evolved independently in the Marsupialia and the Eutheria (Sharman, Calaby & Poole, 1966; Tyndale-Biscoe, 1973). For example, the gestation period is generally similar in length to the oestrous cycle or shorter than it, there is prolonged extra-uterine development in the marsupium and embryonic diapause is a regular feature of many species. Comparison of the controlling mechanisms of these aspects of marsupial reproduction with those of eutherian reproductive patterns reveals the different ways in which the two groups have adapted to similar environmental problems. The female tammar wallaby is a precise seasonal breeder. In Australia young are usually born in late January or early February, having developed from a quiescent blastocyst carried in the uterus from the previous year. The annual reproductive cycle is shown in Text-fig. 1. After birth the young |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://rep.bioscientifica.com/downloadpdf/journals/rep/39/1/jrf_39_1_040.pdf |
| PubMed reference number | 20782007v1 |
| Volume Number | 2 |
| Issue Number | 4069 |
| Journal | British medical journal |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Animal for breeding Blastocyst structure Diapause Eutheria Reproduction Superorder Marsupalia (organism) Uterus |
| Content Type | Text |
| Resource Type | Article |
