Publications by authors named "Cyrma M Hearn"
In mammals, embryonic diapause, or suspension of embryonic development, occurs when embryos at the blastocyst stage are arrested in growth and metabolism. In the tammar wallaby (Macropus eugenii), there are two separate uteri, only one of which becomes gravid with the single conceptus at a post-partum oestrus, so changes during pregnancy can be compared between the gravid and non-gravid uterus within the same individual. Maintenance of the viable blastocyst and inhibition of further conceptus growth during diapause in the tammar is completely dependent on the uterine environment.
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- The study looked at how milk composition changes in tammar wallabies during lactation based on the age of the pouch young (PY).
- Researchers tested if the sucking patterns of the PY influenced milk production by fostering 60-day-old PY with host mothers for 56 days, leading to milk composition changes.
- Results showed that while milk composition remained mostly unchanged, the growth of the foster PY improved due to consuming higher energy milk, indicating that lactating wallabies control milk production and composition based on the needs of their young, not just their age.