Carnegie Stage Comparison: Difference between revisions
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Revision as of 07:14, 21 December 2010
Introduction
Stages are based on the external and/or internal morphological development of the vertebrate embryo, and are not directly dependent on either age or size. The human embryonic period proper is divided into 23 Carnegie stages. Criteria beyond morphological features include age in days, number of somites present, and embryonic length.
As this staging can be applied to all vertebrates, and most vertebrate embryos develop during the embryonic period in much the same way, we can directly compare the timing of development for different species.
From the table you can see that to reach the end of embryonic development, Carnegie stage 23, can take from as little as 10 days in chickens to nearly 60 days in humans.
Carnegie is the name of a historical US Institute that historically categorised these developmental stages, and continues to study embryology today.
Species Comparison of Carnegie Stages
Data For Carnegie Stages Comparison Graph (Species/Days)
Species | Stage | |||||||||||||||
Human | Days | 20 | 22 | 24 | 28 | 30 | 33 | 36 | 40 | 42 | 44 | 48 | 52 | 54 | 55 | 58 |
Baboon | Days | 23 | 25 | 27 | 28 | 29 | 30 | 31 | 33 | 35 | 37 | 39 | 41 | 43 | 45 | 47 |
Rhesus Monkey | Days | 21 | 22 | 25 | 28 | 29 | 30 | 32 | 34 | 36 | 37 | 38 | 40 | 42 | 44 | 46 |
Marmoset | Days | 57 | 60 | 64 | 67 | 74 | ||||||||||
Mouse | Days | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 15.5 | 16 |
Rat | Days | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 15.5 | 16 | 16.5 | 17 | 17.5 |
Chinese Hamster | Days | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 15.5 | 16 | 16.5 | 17 |
Guinea Pig | Days | 14.5 | 15 | 15.5 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 29 |
Rabbit | Days | 8 | 8.5 | 9.5 | 10.5 | 11 | 12 | 12.5 | 13.5 | 14 | 14.5 | 15.5 | 16 | 16.5 | 17 | 18 |
Sheep | Days | 15 | 16 | 17.5 | 18.5 | 19.5 | 20.5 | 22 | 23 | 24.5 | 25.5 | 27.5 | 29.5 | 30 | 33 | |
Pig | Days | 14 | 15 | 16 | 17 | 18 | 19 | 20.5 | 21.5 | 23 | 24 | 25.5 | 27.5 | 29 | 30.5 | 32.5 |
Chicken | Days | 1 | 1.5 | 2 | 2.25 | 2.5 | 3 | 3.25 | 3.75 | 4.75 | 5.5 | 6.25 | 7.25 | 7.75 | 8.5 | 10 |
Source: Butler, H. and Juurlink, B.H.J. An atlas for staging mammalian and chick embryos. CRC Press Inc., Florida (1987) and specific references listed below.
References
Human
O'Rahilly Early human development and the chief source of information on staged human embryos. Eur. J. Obstet. Gynec. Reprod. Biol. 9 p273 (1979)
Baboon
Hendrickx Embryology of the baboon. University of Chicago Press.
Rhesus Monkey
Hendrickx and Sawey Embryology of the rhesus monkey. The Rhesus Monkey, Bourne (ed), Academic Press, NY (1975)
Marmoset
Phillips The embryology of the common marmoset. Adv.
Mouse
Theiler The house mouse. Springer-Verlag, NY (1972)
Rat
Witschi Growth. Altman and Dittmer (ed), Fed. Soc. Exp. Biol., Washington (1962)
Chinese Hamster
Donkelaar Stages in the prenatal development of the chinese hamster. Anat. Embryol. 156 p1 (1979)
Guinea Pig
Harman and Prickett The development of the external form of the guinea-pig between the ages of 11 and 20 days of gestation. Am. J. Anat. 49 p351 (1932)
Rabbit
Edwards The external development of the rabbit and rat embryo. Advances in teratology, Vol 3, Woollam (ed), Academic Press, NY (1968)
Sheep
Bryden Embryology of the sheep. J. Morphology 138 p169 (1972)
Pig
Marrable The embryonic pig. A chronological account. Pitman Medical, London (1971)
Chicken
Hamburger and Hamilton A series of normal stages in the development of the chick embryo. J. Morph. 88 p49 (1951)
Butler and Juurlink An atlas for staging mammalian and chick embryos. CRC Press Inc., Florida (1987)
Glossary Links
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Cite this page: Hill, M.A. (2024, April 18) Embryology Carnegie Stage Comparison. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_Stage_Comparison
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G