High incidence of otolith abnormality in juvenile European flounder Platichthys flesus from a tidal freshwater area

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Neves, V (Autor) Outra; Guedes, A (Autor) FCUP; B. Valentim (Autor) FCUP; Campos, J (Autor) Outra; Freitas, V (Autor) Outra

Revista

Título: Marine Biology Research

Vol. 13

Páginas: 933-941

ISSN: 1745-1000

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 8 Citações

Outras Informações

ID Authenticus: P-00N-CK1

DOI: 10.1080/17451000.2017.1331041

Abstract (EN): Otolith abnormality has been reported for a wide range of freshwater and marine fish species. In this study, the sagittal otolith morphology and mineralogy of juvenile European flounder, Platichthys flesus, were examined to describe the incidence and types of structural deformities in this species. Juvenile flounder were collected over the years 2013-2015 in the tidal freshwater section of an estuarine nursery (Minho estuary, NW Portugal). Otolith abnormality was found in 43% of the individuals and, in most cases, occurred in both otoliths. Despite an abnormal mineralogy confirmed by scanning electron microscopy, the morphometry and the mineral polymorph composition of abnormal otoliths did not differ from normal ones (i.e. aragonite). This contrasts with other studies where vaterite and/or calcite were found to replace aragonite in abnormal otoliths. Further studies are needed to elucidate whether abrupt salinity changes associated with habitat transitions may have played a role in the abnormal otolith biomineralization in this species.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9