Ocular reversal in Paralichthys adspersus (Steindachner, 1867) small eyes flounder (Pleuronectiformes, Paralichthyidae): a case from the environment and analysis of cultured specimens

Flores Á.H.; Martinez, P

Abstract

In several species of Pleuronectiformes have been cases of ocular reversal, a phenomenon in which the individual lies at the bottom on the opposite side than usual and / or normal. The rate at which this condition occurs is variable and depends on the species analyzed. In the genus Paralichthys reversal has been reported in four species: P. albigutta, P. orbignyanus, P. californicus y P. dentatus. This paper reports a case of reversal in Paralichthys adspersus (Steindachner, 1867) caught in Caldera (Chile). On the other hand is reported for this species reversed individuals from a crop, from broodstock who were captured in Bahia Coquimbo. In right and left specimens from a crop, a comparison was made of morphometric relationships. The proportion of fish with ocular reversal coming from a culture, accounting 2.2% of the population fishes produced. We discuss the frequency of such anomalies and the probable causes that would produce

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Título según WOS: Ocular reversal in Paralichthys adspersus (Steindachner, 1867) small eyes flounder (Pleuronectiformes, Paralichthyidae): a case from the environment and analysis of cultured specimens
Título de la Revista: LATIN AMERICAN JOURNAL OF AQUATIC RESEARCH
Volumen: 41
Número: 1
Editorial: UNIV CATOLICA DE VALPARAISO
Fecha de publicación: 2013
Página de inicio: 57
Página final: 67
Idioma: Spanish
URL: http://www.lajar.cl/pdf/imar/v41n1/Articulo_41_04.pdf
DOI:

10.3856/vol41-issue1-fulltext-4

Notas: ISI