INVESTIGADORES
VAN DER MOLEN Silvina
artículos
Título:
Oocyte development and maturity classification of Gerlachea australis from Weddell Sea, Antarctica.
Autor/es:
VAN DER MOLEN, SILVINA; MATALLANAS JESÚS,
Revista:
POLAR BIOLOGY
Editorial:
Springer
Referencias:
Lugar: Berlin; Año: 2003 vol. 26 p. 653 - 658
ISSN:
0722-4060
Resumen:
Gonad structure and oogenesis were studied in the Bathydraconiid species Gerlachea australis, in order to determine whether reproduction represent any meaningful adaptation feature in this Antarctic species. All studied specimens came from Halley Bay, Weddell Sea. This species shows a cystovarian type ovary, and the oocytes developmental dynamics allows classifying it as group synchronic ovary. The different events of the oogenesis were grouped in seven stages, each one showing distinctive features. After the analyses of the frequency distributions of the oocytes in the different stages, three ovarian maturing stages were characterized. The spawning probably takes place during the austral summer and the eggs are released in a short period of time. The features of the oogenesis and ovarian maturation in G. australis are similar to the ones described for other Teleosts.
