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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Unequal caudocephalic ooplasmic uptake and eccentric formation of the subgerminal space below unincubated quail blastoderms presenting a Koller's sickle.

M CALLEBAUT (1993)

Unequal caudocephalic ooplasmic uptake and eccentric formation of the subgerminal space below unincubated quail blastoderms presenting a Koller's sickle.

BELGIAN JOURNAL OF ZOOLOGY, 123(2):107-112.

By radioactive ooplasmic yolk layer labeling during late oogenesis, we demonstrated that below unincubated quail blastoderms the subgerminal space extends much more peripherally in the cranial then in the caudal direction, where it ends abruptly against Koller's sickle. Our autoradiographic and histochemical investigations indicate that Koller's sickle develops by a progressive local colonisation of the centro-caudal subgerminal ooplasm, which does not take place in the cranial diametrically opposite anti-sickle region. The deep paracentral uptake of voluminous ooplasmic areas by large encircling extensions of its cells is a characteristic feature of the sickle region.

AVIAN OOPLASM; QUAIL BLASTODERM; KOLLER SICKLE; CAUDO-CEPHALIC AXIS
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
1989-
Belgian Journal of Zoology