MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
The genus Buccinanops (dÂ’ Orbigny, 1841): a model for eyes loss in caenogastropods.
Autor/es:
AVERBUJ, A.; PENCHASZADEH, P.E.
Revista:
AMERICAN MALACOLOGICAL BULLETIN
Referencias:
Año: 2008 vol. 26 p. 67 - 67
ISSN:
0740-2783
Resumen:
The genus Buccinanops (Caenogastropoda, Nassarridae) is endemic from the south western Atlantic Ocean, and the name implies no eyes, due to the lack of visible eyes in adults. In this work we recognize for the first time the occurrence of eyes during several developmental stages within Buccinanops. Eye spots in B. cochlidium were observed during intracapsular development, in hatchlings and juveniles. Eyes were histologically confirmed in embryonic cephalic tentacles; comprised of sensory cells, supportive cells, a lens and an optic nerve cord. The ontogenetic history of the eyes of B. cochlidium is discussed.