|Embryology - 13 Jul 2020 Expand to Translate|
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|A personal message from Dr Mark Hill (May 2020)|
|contributors to the site. The good news is Embryology will remain online and I will continue my association with UNSW Australia. I look forward to updating and including the many exciting new discoveries in Embryology!|
The possums (Phalangeridae) are a family of nocturnal semi-arboreal marsupials including the cuscuses, brushtail possums, and their close relatives.
Common brushtail possum (Trichosurus vulpecula)
Common ringtail possum (Pseudocheirus peregrines)
|Australian Animal: echidna | kangaroo | koala | platypus | possum | Category:Echidna | Category:Kangaroo | Category:Koala | Category:Platypus | Category:Possum | Category:Marsupial | Category:Monotreme | Development Timetable | K12|
Some Recent Findings
|More recent papers|
This table allows an automated computer search of the external PubMed database using the listed "Search term" text link.
Search term: Possum Embryology
<pubmed limit=5>Possum Embryology</pubmed>
Taxonomy ID: 38626
Genbank common name: koala Inherited blast name: marsupials
Genetic code: Translation table 1 (Standard)
Mitochondrial genetic code: Translation table 2 (Vertebrate Mitochondrial)
Lineage ( full ) cellular organisms; Eukaryota; Opisthokonta; Metazoa; Eumetazoa; Bilateria; Deuterostomia; Chordata; Craniata; Vertebrata; Gnathostomata; Teleostomi; Euteleostomi; Sarcopterygii; Dipnotetrapodomorpha; Tetrapoda; Amniota; Mammalia; Theria; Metatheria; Diprotodontia
The marsupial neonate at birth has a variation between the degree of development of different systems.
- well-developed - digestive, respiratory and circulatory system.
- not well-developed - retains fetal excretory system with a fully functional mesonephric kidney and undifferentiated gonads and genitalia.
Ovarian Follicle Development
Marsupial eggs are enclosed by a series of layers:
- zona pellucida, three zona proteins (ZPA, ZPB, ZPC)
- an additional extracellular matrix coat that lines the zona pellucida also occurs in some species.
- mucoid coat
- outer shell coat.
- Links: oocyte
- Links: spermatozoa
- Keyte AL & Smith KK. (2010). Developmental origins of precocial forelimbs in marsupial neonates. Development , 137, 4283-94. PMID: 21098569 DOI.
- Haydon LJ, Juengel JL, Thomson BP & Eckery DC. (2008). Expression of mRNAs encoding oestrogen receptor (ER) alpha and ERbeta, androgen receptor and progesterone receptor during gonadal and follicular development in the marsupial brushtail possum (Trichosurus vulpecula). Reprod. Fertil. Dev. , 20, 335-49. PMID: 18402753
- Renfree MB, Pask AJ & Shaw G. (2001). Sex down under: the differentiation of sexual dimorphisms during marsupial development. Reprod. Fertil. Dev. , 13, 679-90. PMID: 11999321
- Selwood L. (2000). Marsupial egg and embryo coats. Cells Tissues Organs (Print) , 166, 208-19. PMID: 10729728 DOI.
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Cite this page: Hill, M.A. (2020, July 13) Embryology Possum Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Possum_Development
- © Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G