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Veuillez utiliser cette adresse pour citer ce document : http://hdl.handle.net/1834/2045

Titre: Observaciones sobre embriones de larvas y juveniles de la pescadilla (Cynoscion striatus)
Autre(s) titre(s): Observations on embryos, larvae and juveniles of (Cynoscion striatus)
Auteur(s): de Ciechomski, J.D.
Cassia, M.C.
mot-clé ASFA: Embryos
Fish larvae
Date de publication: 1982
Editeur: Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
Référence bibliographique: Revista de Investigación y Desarrollo Pesquero, 3. p. 5-15
Résumé: Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract forms a straight angle with the anus. The dody and the oil globule are pigmented. The juveniles have a rather deep form of the head and of the body and have their charasteristic pigmentation pattern. The preoperculum is provided with strong spines which disappear entirely in larger specimens.
URI/URL: http://hdl.handle.net/1834/2045
ISSN: 0325-6375
Collection(s) :1. Revista de Investigación y Desarrollo Pesquero

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