ULTRASTRUCTURE OF THE OOCYTE AND EMBRYO OF THE CALCIFIED SPONGE, PETROBIONA-MASSILIANA (PORIFERA, CALCAREA)

被引：30

作者：

GALLISSIAN, MF ^{[1
]}

VACELET, J ^{[1
]}

机构：

[1] UNIV AIX MARSEILLE 1,BIOL SPONGIAIRES LAB,F-13331 MARSEILLE 3,FRANCE

来源：

ZOOMORPHOLOGY | 1992年 / 112卷 / 03期

关键词：

D O I：

10.1007/BF01633104

中图分类号：

R602 [外科病理学、解剖学]; R32 [人体形态学];

学科分类号：

100101 ;

摘要：

In the sponge Petrobiona massiliana, a Calcarea related to "pharetronid" fossils, the oocyte and the embryo both receive an unusual amount of maternal nurse cells. Yolk granules are large and display a lamellar structure throughout the entire growth period, which allows them to be used as markers of the oocyte reserves. The cruciform cells ("cellules en croix") of the embryo appear to degenerate at an early stage. These features are compared to those found in other Calcarea.

引用

页码：133 / 141

页数：9

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