Artículo
Environmental migratory patterns and stock identification of Mugil cephalus in the Spanish Mediterranean Sea, by means of otolith microchemistry
Callicó Fortunato, Roberta Glenda
; Reguera Galán, Aida; García Alonso, Ignacio; Volpedo, Alejandra
; Dura, Vicent Benedito
Fecha de publicación:
02/2017
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Estuarine, Coastal and Shelf Science
ISSN:
0272-7714
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The Flathead grey mullet, Mugil cephalus is the most worldwide distributed Mugilidae species. Migrations and movement patterns have been studied globally but not in-depth in the Mediterranean region. Thus, two main objectives were set out in the present study: (1) to identify migratory patterns throughout the life-history of the Mugil cephalus in different Spanish Mediterranean wetlands, and (2) to study the presence of potential fish stocks of the species in the region; using otolith microchemistry as a tool of choice. Specimens (n = 43) were obtained in three wetlands: Parque Natural Delta de l?Ebro (DE), a stratified estuary; Parque Natural de l?Albufera de Valencia (AV), a Mediterranean lake; and Parque Natural Salinas de Santa Pola (SP), a coastal salt marsh. Otolith microchemistry was studied using LA-ICP-MS (chronological variation of Sr:Ca and Ba:Ca ratios). The analysis of lifetime profiles revealed four behavioral patterns: Type I: most frequent use of estuarine environments (estuarine resident); Type II: freshwater behaviour during early life history, moving though estuarine to marine waters at the end of their profile (freshwater migrant); Type III: estuarine water use in early life stages moving then towards sea waters (estuarine migrant); and Type IV: sea/high salinity water habitat use during their entire lifetime (seawater resident). A Canonical Discriminant Analysis, using Sr:Ca and Ba:Ca ratios from core and edge as variables, assigned individuals to the detected patterns with high accuracy (Type I > 95%; Type II and Type III > 83%; and Type IV > 88%). Moreover, two potential fish stocks were identified by the analysis of Sr:Ca otoliths-edge ratios: one in the Valencian Gulf, DE-AV areas presented similar ratios, and the other in the southern location, SP (higher Sr:Ca values). Mugil cephalus presented diverse life patterns on the Valencian Community Mediterranean coast. Different strategies could be identified by the used methodology: some particular to an area (Type IV-SP); others shared among areas, changing environments in different stages of their life. The presence of different fish stocks could be influenced by a mesoscale current phenomenon observed in the region associated with the Balearic front.
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Articulos(INPA)
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Articulos de UNIDAD EJECUTORA DE INVESTIGACIONES EN PRODUCCION ANIMAL
Citación
Callicó Fortunato, Roberta Glenda; Reguera Galán, Aida; García Alonso, Ignacio; Volpedo, Alejandra; Dura, Vicent Benedito; Environmental migratory patterns and stock identification of Mugil cephalus in the Spanish Mediterranean Sea, by means of otolith microchemistry; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 188; 2-2017; 174-180
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