Consulta: subjectFacets:"Sábalo"
Registros recuperados: 3
Data/hora: 13/06/2024 07:54:39

Atresia Folicular en Ovarios de Prochilodus lineatus
Provedor de dados: 77
Autores: Flores Quintana,C; Blanco Cohene,T; Arbués,R; Domitrovic,H; González,J.
Durante el período reproductivo, en el ovario de los teleósteos se forman cíclicamente folículos primarios, los que maduran y son liberados en el momento de la ovulación. Sin embargo, algunos de ellos desarrollan un proceso de atresia con degeneración y reabsorción, el que para ser considerado un evento fisiológico debería predominar al final del ciclo reproductivo. Las características morfológicas de ovarios de Prochilodus lineatus fueron analizadas para identificar la presencia de folículos atrésicos como indicadores de posibles modificaciones de su biología reproductiva que afecte la repoblación de la especie. En los ovarios de P. lineatus predominaron los cambios morfológicos que se corresponden con la denominada atresia tipo I, y los folículos...
Tipo: Journal article
Palavras-chave: Peces; Gónadas; Histología; Sábalo.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400008

Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour
Provedor de dados: 83
Autores: Stassen,Marinke J. M.; van de Ven,Max W. P. M.; van der Heide,Tjisse; Hiza,Marco Antonio Guerrero; van der Velde,Gerard; Smolders,Alfons J. P.
The relative importance of flood pulse dynamics and megafan behaviour for the Sábalo (Prochilodus lineatus) catches in the neotropical Pilcomayo River is studied. The Sábalo catches can mainly be explained by decreased river discharges in the preceding years resulting in smaller inundated areas during rainy season floods and thereby in a decreased area of feeding grounds for the fishes. The decreased river discharges and the related decline of Sábalo catches in the 1990's can be linked to the 90-95 El Niño event. In 2007 the Sábalo catches were comparable to the catches before the "El Niño" event. The connectivity (continuity) between the main river and flood plain areas, which is influenced by sedimentation processes, is also of great importance and very...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sedimentation; Climate change; Sábalo; Gonadal development; Flood Pulse Concept.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100014

Otolith morphometry provides length and weight predictions and insights about capture sites of Prochilodus lineatus (Characiformes: Prochilodontidae)
Provedor de dados: 83
Autores: Santana,Herick Soares de; Rodrigues,Amanda Cantarute; Minte-Vera,Carolina Viviana.
ABSTRACT Here we choose the sábalo Prochilodus lineatus, to answer the following questions: How the otolith length and weight are correlated to fish measurements (length and weight)? How reliable are the otoliths measurements to predict the length and age of P. lineatus? Finally, we propose predictive equations of the length and weight of the fish using length and weight of the otolith. The otoliths were sampled from individuals collected in the Upper Paraná River floodplain during 2012 and 2013 years. The relationships among the otolith measurements and both length and weight of the fish were performed using linear regressions. To test whether the length and weight of the otolith differ between the sampled sites, Variance Analysis was performed. Finally,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age of fish; Lapillus; Migratory fish; Otolith description; Sábalo.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400207