No implantation in an extra-uterine pregnancy of a placentotrophic reptile

O. W. Griffith; J. U. Van Dyke; M. B. Thompson

doi:10.1016/j.placenta.2013.03.002

No implantation in an extra-uterine pregnancy of a placentotrophic reptile

O. W. Griffith, J. U. Van Dyke, M. B. Thompson

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Placentation is a common feature of live-bearing reptiles and mammals. Placentae are variable between species and can be classified by the extent that embryonic tissue breaches (invades) the uterus. Non-invasive placentation in eutherians is maternally imposed as extra-uterine embryos of species with epitheliochorial placentation will readily invade non-uterine tissues. This study documents the first observation of an extra-uterine pregnancy in a reptile; Pseudemoia entrecasteauxii, which in-utero exhibits non-invasive epitheliochorial placentation. The extra-uterine embryo did not invade maternal tissue suggesting fundamental differences between the nature and evolution of placentation in P. entrecasteauxii and eutherian mammals.

Original language	English
Pages (from-to)	510-511
Number of pages	2
Journal	Placenta
Volume	34
Issue number	6
DOIs	https://doi.org/10.1016/j.placenta.2013.03.002
Publication status	Published - 2013

Keywords

invasion
placenta
pseudemoia

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10.1016/j.placenta.2013.03.002

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abstract = "Placentation is a common feature of live-bearing reptiles and mammals. Placentae are variable between species and can be classified by the extent that embryonic tissue breaches (invades) the uterus. Non-invasive placentation in eutherians is maternally imposed as extra-uterine embryos of species with epitheliochorial placentation will readily invade non-uterine tissues. This study documents the first observation of an extra-uterine pregnancy in a reptile; Pseudemoia entrecasteauxii, which in-utero exhibits non-invasive epitheliochorial placentation. The extra-uterine embryo did not invade maternal tissue suggesting fundamental differences between the nature and evolution of placentation in P. entrecasteauxii and eutherian mammals.",

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AU - Griffith, O. W.

AU - Van Dyke, J. U.

AU - Thompson, M. B.

PY - 2013

Y1 - 2013

N2 - Placentation is a common feature of live-bearing reptiles and mammals. Placentae are variable between species and can be classified by the extent that embryonic tissue breaches (invades) the uterus. Non-invasive placentation in eutherians is maternally imposed as extra-uterine embryos of species with epitheliochorial placentation will readily invade non-uterine tissues. This study documents the first observation of an extra-uterine pregnancy in a reptile; Pseudemoia entrecasteauxii, which in-utero exhibits non-invasive epitheliochorial placentation. The extra-uterine embryo did not invade maternal tissue suggesting fundamental differences between the nature and evolution of placentation in P. entrecasteauxii and eutherian mammals.

AB - Placentation is a common feature of live-bearing reptiles and mammals. Placentae are variable between species and can be classified by the extent that embryonic tissue breaches (invades) the uterus. Non-invasive placentation in eutherians is maternally imposed as extra-uterine embryos of species with epitheliochorial placentation will readily invade non-uterine tissues. This study documents the first observation of an extra-uterine pregnancy in a reptile; Pseudemoia entrecasteauxii, which in-utero exhibits non-invasive epitheliochorial placentation. The extra-uterine embryo did not invade maternal tissue suggesting fundamental differences between the nature and evolution of placentation in P. entrecasteauxii and eutherian mammals.

KW - invasion

KW - placenta

KW - pseudemoia

UR - http://handle.uws.edu.au:8081/1959.7/uws:31045

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DO - 10.1016/j.placenta.2013.03.002

M3 - Article

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VL - 34

SP - 510

EP - 511

JO - Placenta

JF - Placenta

IS - 6

ER -

No implantation in an extra-uterine pregnancy of a placentotrophic reptile

Abstract

Keywords

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