| Full text | |
| Author(s): |
Garcia Bento, M. A.
;
Nascimento, F. A.
;
Mantelatto, F. L.
;
Zara, F. J.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | TISSUE & CELL; v. 66, p. 14-pg., 2020-10-01. |
| Abstract | |
The ovarian development o f Callinectes ornatus and Arenaeus cribrarius was described using histochemistry and ultrastructure. Both species shows the same ovarian stages, which are the juvenile (JUV), adult rudimentary (RUD), developing (DEV), intermediary (INT), mature (MAT), and spent (OV) stages. The JUV and RUD stages showed similar characteristics, and previtellogenesis is characterized by meiotic prophase chromosomes. In the primary vitellogenesis, the oocyte cytoplasm shows many small and large cytoplasmic glycoprotein vesicles. These vesicles correspond to the dilated cisternae of the rough endoplasmic reticulum (RER), which produces the immature (endogenous) yolk. Secondary vitellogenesis (exogenous phase) begins at the DEV stage with the fusion of pinocytic vesicles and vesicles with immature yolks to form mature yolk granules. At the INT stage, the formation of the chorion begins, and the mature yolks increase in size and number, while the RER diminishes. In the MAT stage, the oocytes are completely formed, and the cytoplasm is filled with mature yolk, lipid droplets, and glycogen. There are no significant variations between the gonadosomatic and hepatosomatic indices, which allows us to infer that the transfer of reserves from the hepatopancreas is nearly constant during ovarian development, since we observed primiparous and multiparous females in the same sampled population. (AU) | |
| FAPESP's process: | 09/54931-0 - Improvement and management of biological specimen collections at the Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo |
| Grantee: | Carlos Alberto Garofalo |
| Support Opportunities: | Research Infrastructure Program - Biological specimen collections |
| FAPESP's process: | 10/50188-8 - Decapod crustaceans: multi-disciplinary characterization of the sea biodiversity of the State of São Paulo (taxonomy, spermiotaxonomy, molecular biology and population dynamics) |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 18/13685-5 - Integrative analysis of the Brazilian fauna of decapod crustaceans: taxonomy, phylogenetic systematics, spermiotaxonomy, morphology of post-embryonic development, ecology and conservation |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 09/01348-5 - Male reproductive system of Callinectes ornatus Ordway, 1863 (Crustacea - Decapoda): ultrastructure and histochemistry |
| Grantee: | Fabiana Aparecida Do Nascimento |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |