Searchable, peer-reviewed, open-access proceedings from bioscience and biomedical conferences

bp0010ised4 | (1) | ISED2019

Embryonic diapause in the European roe deer (Capreolus capreolus)

van der Weijden VA , Ulbrich SE

Keywords: Embryonic diapause, European roe deer, embryo-maternal communication© Third International Symposium on Embryonic Diapause...

bp0010ised13 | (1) | ISED2019

Trophectoderm and embryoblast proliferate at slow pace in the course of embryonic diapause in the roe deer (Capreolus capreolus)

Rüegg AB , Bernal S , Moser FN , Rutzen I , Ulbrich SE

The European roe deer (Capreolus capreolus) was the first mammal in which embryonic diapause has been described. While diapause is characterized by a complete developmental arrest in some species, roe deer blastocysts show a very slow, yet continuous growth. To date, it is neither known whether this growth is accompanied by developmental progression nor whether it is uniform in both, the trophectoderm (TE) and the inner cell mass (ICM). We collected roe deer blastocysts during...

bp0010ised12 | (1) | ISED2019

Gliding into diapause: early embryo development in roe deer (Capreolus capreolus)

Drews B , Ulbrich SE , Rudolf Vegas A , Jewgenow K , Zahmel J , Roellig K , Ortmann S , Hildebrandt TB , Goeritz F

During mammalian diapause, the embryo is arrested at the blastocyst stage. In diapausing carnivores and marsupials, growth arrest of the blastocyst is coincident with a quiescent corpus luteum (CL). In the roe deer, progesterone is produced throughout diapause and the blastocyst exhibits very slow growth. To date, early roe deer embryos of known age have not been described. Therefore, it is not known at which stage and at what pace the roe deer embryo enters diapause. To colle...

bp0010ised15 | (1) | ISED2019

Embryonic diapause modulates ovarian follicular dynamics and oocyte quality in the European roe deer (Capreolus capreolus)

Bernal-Ulloa SM , Bick JT , van der Weijden VA , Rüegg AB , Drews B , Kowalewski MP , Bauersachs S , Ulbrich SE

The phenomenon of embryonic diapause has been reported to possibly affect ovarian follicular development. The aim of the current study was to identify the impact of the embryonic diapause period on follicle number and oocyte quality in the European roe deer (Capreolus capreolus). In this species, the embryo undergoes five months of developmental delay. We have determined the antral follicle count (AFC), oocyte morphological quality, oocyte meiotic resumption capacity ...