BIOL30001 Lecture Notes - Lecture 10: Corpus Luteum, Macropus, Blastocyst
17 Aug 2018
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South american marsupials: more ancient than australian marsupials, microbiotheria (dromiciops) more closely related to. Aus marsupials than south american doesn"t have sperm head pairing (and foot morphology) like other south american marsupials. Dunnart and antechinus (males compete for females and use all resources so die before o spring are born: diprodonts (mostly herbivorous) e. g. Honey possum have largest testis to body weight ratio of any mammal: peramelids and marsupial moles e. g. Female marsupial reproductive tract: have 3 vagini (paired lateral and medial, lateral vagini where sperm go and medial is birth canal, have 2 seperate uteri and cervices. Male marsupial reproductive tract: large prostate, male and female have similar urogenital sinus openings, scrotum is cranial/anterior to penis, penis bi d in some species. Altricial young (birds and mammals: altricial = requiring nourishment", young that are incapable of moving around on their own soon after being born. They are born helpless and require care for a comparatively long time.
