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espanolSe describe el desarrollo osteologico de la columna vertebral y del complejo caudal de Amphiprion ocellaris, una especie de importancia ornamental. Los organismos se cultivaron bajo condiciones controladas desde la eclosion hasta los 30 dias despues de eclosionar (DDE) y fueron procesados con los metodos de clareado y tincion diferencial de tejidos oseos y cartilaginosos. Las larvas al eclosionar ya tienen desarrollados la mayoria de sus elementos vertebrales en etapa de cartilago y el notocordio en estado de pre-flexion; la region abdominal presenta 11 arcos neurales y en la region caudal 12 arcos neurales y 12 arcos hemales. En el complejo caudal se observaron los hipurales aun separados entre ellos. A los 6 DDE el notocordio se encontro en etapa de flexion y aparecen las costillas ventrales, y en la region caudal se desarrollaron 12 espinas neurales y 12 espinas hemales y los hipurales ya se han fusionados. A los 11 DDE el notocordio ya estaba en pos-flexion y el complejo caudal completamente formado, y se desarrollaron completamente todas las espinas neurales y espinas hemales. A los 23 DDE se observo la osificacion de todas las estructuras. La columna vertebral de A. ocellaris se divide en una region abdominal, con 11 vertebras y una region caudal con 15 vertebras incluyendo el urostilo. El conocimiento detallado de las estructuras osteologicas servira de referencia para la deteccion oportuna de malformaciones durante el cultivo del pez payaso. EnglishThe osteological development of the vertebral column and the caudal complex of the clownfish Amphiprion ocellaris, an important ornamental species is described. The organisms were reared under controlled conditions from hatching until 30 days post hatch (DPH) and methods for the clearing and differential staining of bone and cartilage tissues were applied. At hatching time, most of the vertebral elements had developed in cartilage stage and the notochord in pre-flexion larvae; 11 neural arches were located in the abdominal region while 12 neural arches and 12 haemal arches were found in the caudal region. In the caudal complex, the hypurals were still separated from one another. On 6 DPH the notochord was in flexion stage and the ventral ribs were observed, while 12 neural spines and 12 haemal spines had developed in the caudal region and the hypurals were fused. The notochord was in the post-flexion stage on 11 DPH and the complex caudal completely formed with all the neural spines and haemal spines fully developed. At 23 DPH all structures had ossified. The vertebral column was divided in the abdominal region and comprised of 11 vertebrae while in the caudal region there were 15 vertebrae including the urostyle. Detailed information of osteological structures serve as a reference for the timely detection of malformations during clownfish aquaculture.

revista de biología marina y oceanografía

Desarrollo osteológico de la columna vertebral y del complejo caudal de larvas del pez payaso Amphiprion ocellaris (Pomacentridae) en condiciones de cultivo