INVESTIGADORES
VOLPEDO Alejandra Vanina
congresos y reuniones científicas
Título:
Stock identification of mediterranean mullets of three wetlands in the Comunidad Valenciana and Catalonia using sagitta otolith morphometry
Autor/es:
ROBERTA CALLICÓ FORTUNATO; ALEJANDRA VANINA. VOLPEDO; VICENT BENEDITO DURÀ
Lugar:
Huesca
Reunión:
Congreso; Wetlands Biodiversity and Services: Tools for Socio-Ecological Development; 2014
Institución organizadora:
Wetlands International
Resumen:
In the Northeastern Atlantic and Mediterranean Sea there are 8 fish species of the Mugilidae family. Stock identification of mugilids is poorly studied and very important for local fisheries management and regulations. The aim of this work is to identify stocks of two of the most abundant mugilid species in the Comunidad Valenciana: Mugil cephalus, a worldwide distributed species, and Liza ramada. For this, we used as a tool sagitta otolith morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. species, and Liza ramada. For this, we used as a tool sagitta otolith morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. Mugil cephalus, a worldwide distributed species, and Liza ramada. For this, we used as a tool sagitta otolith morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry. Liza ramada. For this, we used as a tool sagitta otolith morphometry. Individuals of both species were sampled in three wetlands of the Comunidad Valenciana (Parque Natural Delta de l?Ebre, Parque Nartural de l?Albufera de Valencia and Parque Natural Salinas de Santa Pola) so as to map the whole coastal region. Total length of fish was registered and saccular otoliths were removed and photographed. Using an image analysis program, morphometric variables were measured: otolith length (OL), width (OW), perimeter (OP) and area (OA); sulcus perimeter (SP) and area (SA). These characters were compared among the different study areas using ANOVA, with Bonferroni contrasts. The results showed that with the use of otolith morphometry stock identification, of these two species, could be possible; however, to confirm this, it?s necessary the validation applying other methodologies such us otolith microchemistry or geographic morphometry.