Resumen.-El desarrollo embrionario y larval de Dissostichus eleginoides es descrito por primera vez utilizando ejemplares cultivados en laboratorio (4 a 8°C). Periódicamente fueron fijados huevos y larvas para describir el desarrollo. Los huevos midieron de 3,1 a 3,5 mm de diámetro, esféricos, de corion transparente y superficie levemente rugosa, con 28 gotas oleosas, ubicadas en torno al polo germinativo y tardaron 30 a 33 días en eclosionar. Las larvas consumieron el saco vitelino en 18 días (larvas vitelogénicas, 8-13 mm), luego comienzan a desarrollarse los rayos de las aletas, se incrementa la pigmentación y se distinguen 3 zonas con agregación de melanóforos (parte posterodorsal de la cabeza, sobre el intestino y delante del pedúnculo caudal). El complejo hipural a estuvo completamente formado cuando las larvas midieron entre 49 y 53 mm (LS), lo que ocurrió a 57 días de la eclosión. Palabras clave: Dissostichus eleginoides, desarrollo embrionario y larvalAbstract.-This is the first description of the embryonic and early larval development of laboratory-reared (4-8°C) Dissostichus eleginoides. Specimens were periodically sampled to describe egg and larval development. Eggs were spherical (3.1-3.5 mm diameter) and had a transparent chorion and slightly rough surface, with 28 oil globules located around the germinal pole. Eggs incubated between 30 and 33 days until hatching. At day 18 post-hatching, the yolk sac was absorbed by vitellogenic larvae (8-13 mm total length), after which, the fin rays started to develop, pigmentation increased, and main melanophore aggregation zones were distinguished on the posterodorsal part of the head, the intestine, and before the caudal peduncle. The hypural complex was fully formed by day 57 post-hatching (49-53 mm standard length).
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