Follicular diameter range based on morphological features in Synbranchus marmoratus (Bloch, 1795) (Teleostei, Synbranchiformes, Synbranchidae) from the South-central region of Brazil.
The morphological characteristics of Synbranchus marmoratus female germ cells in various development stages were described in details; then measurements of ovarian follicle diameters were taken from primary and secondary growth as during these development stages the oocyte size varied considerably along the fish growth. The results were correlated to total fish length, using the individuals division in six size classes. It was possible to group oocytes by stages according to histological characteristics but not according to morphometric diameter, as there was a wide variation in diameter in each stage and overlap between different maturation stages. These data make available new information on the reproductive biology of Synbranchidae.
Spadella
Maria Angélica
MA
Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Campus de Botucatu, Distrito de Rubião Júnior, s/n, CEP 18.618-000, CX 510 Botucatu, Sao Paulo, Brasil.
de Castilho-Almeida
Rodrigo Braz
RB
Quagio-Grassiotto
Irani
I
Cesario
Maria Dalva
MD
D000818:Animals; D001938:Brazil; D048429:Cell Size; D005260:Female; D009865:Oocytes / Q000166:cytology* / Q000254:growth & development*; D009867:Oogonia / Q000166:cytology; D006080:Ovarian Follicle / Q000166:cytology* / Q000254:growth & development*; D023701:Smegmamorpha / Q000033:anatomy & histology / Q000254:growth & development / Q000502:physiology*