Vista normal Vista MARC

Feeding ecology of juvenile kelp bass (Paralabrax clathratus) and barred sand bass (P. nebulifer) in Punta Banda estuary, Baja California, México

Tipo de material: ArtículoArtículoIdioma: Inglés Tema(s) en español: Formatos físicos adicionales disponibles:
  • Disponible en línea
 En: Bulletin Southern California Academy of Sciences volumen 101, número 3 (2002), páginas 103-117Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso Resumen:
Inglés

Kelp bass (Paralabrax clathratus) and barred sand bass (P. nebulifer) diets are analyzed between seasons at Punta Banda estuary, Baja California, Mexico (1992-1993). Beam-trawl and otter-trawl tows (5m depth) collected kelp bass of 40-110mm SL range, and P. nebulifer of 30-230mm; overall, gammarid amphipods dominated their diets in index of relative importance, (IRI; 79.4% and 50.9%, respectively). In kelp bass, gammarids had highest IRI in summer (89.3%) and winter (74.9%), with a fish occurrence of 1.6-12.2%, and eelgrass remains of 0.8-7.1%. In P. nebulifer, summer to winter IRI of gammarids were 40.0-88.4%, and occurrence (43.8-65.6%), numeric (65.2-95.0%), and weight (2.5-49.8%). Kelp bass and barred sand bass numeric diet breadth in summer were 0.038 and 0.12, respectively, and 0.031 and 0.013 in winter; for kelp bass, weight diet breadth were 0.031-0.27, and for barred sand bass 0.18-0.26. Dietary overlap between basses was low (<0.60), and by seasonal numbers (<0.49) and weights (<0.24). Nu meric diet breadth was influenced by small prey with high numeric dominance (gammarids). Despite the low niche overlap at Punta Banda estuary, both species showed close trophic affinities by occupying eelgrass beds and adjacent areas.

Número de sistema: 33075
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
Valoración
    Valoración media: 0.0 (0 votos)
Existencias
Tipo de ítem Biblioteca actual Colección Estado Código de barras
Artículos Biblioteca Electrónica Recursos en línea (RE) ECOSUR Recurso digital ECO40033075228

Disponible para usuarios de ECOSUR con su clave de acceso

Kelp bass (Paralabrax clathratus) and barred sand bass (P. nebulifer) diets are analyzed between seasons at Punta Banda estuary, Baja California, Mexico (1992-1993). Beam-trawl and otter-trawl tows (5m depth) collected kelp bass of 40-110mm SL range, and P. nebulifer of 30-230mm; overall, gammarid amphipods dominated their diets in index of relative importance, (IRI; 79.4% and 50.9%, respectively). In kelp bass, gammarids had highest IRI in summer (89.3%) and winter (74.9%), with a fish occurrence of 1.6-12.2%, and eelgrass remains of 0.8-7.1%. In P. nebulifer, summer to winter IRI of gammarids were 40.0-88.4%, and occurrence (43.8-65.6%), numeric (65.2-95.0%), and weight (2.5-49.8%). Kelp bass and barred sand bass numeric diet breadth in summer were 0.038 and 0.12, respectively, and 0.031 and 0.013 in winter; for kelp bass, weight diet breadth were 0.031-0.27, and for barred sand bass 0.18-0.26. Dietary overlap between basses was low (<0.60), and by seasonal numbers (<0.49) and weights (<0.24). Nu meric diet breadth was influenced by small prey with high numeric dominance (gammarids). Despite the low niche overlap at Punta Banda estuary, both species showed close trophic affinities by occupying eelgrass beds and adjacent areas. Inglés

Disponible en línea

Adobe Acrobat profesional 6.0 o superior