Repositorio Institucional
Repositorio Institucional
CONICET Digital
  • Inicio
  • EXPLORAR
    • AUTORES
    • DISCIPLINAS
    • COMUNIDADES
  • Estadísticas
  • Novedades
    • Noticias
    • Boletines
  • Ayuda
    • General
    • Datos de investigación
  • Acerca de
    • CONICET Digital
    • Equipo
    • Red Federal
  • Contacto
JavaScript is disabled for your browser. Some features of this site may not work without it.
  • INFORMACIÓN GENERAL
  • RESUMEN
  • ESTADISTICAS
 
Artículo

Contribution of planktonic and detritic fractions to the natural diet of mesozooplankton in Bahía Blanca estuary

Diodato, Soledad LorenaIcon ; Hoffmeyer, Monica SusanaIcon
Fecha de publicación: 10/2008
Editorial: Springer
Revista: Hydrobiologia
ISSN: 0018-8158
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Meteorología y Ciencias Atmosféricas

Resumen

The relative importance of phytoplankton and microzooplankton in the natural diet of mesozooplankton was assessed in Bahía Blanca Estuary, Argentina, in December 2005. Grazing experiments were performed using 200-to-2,000 µm grazers and natural food <100 µm. Individual and community filtration and ingestion rates were estimated for each food fraction after 24 h incubation. Abundance and carbon data of prey and grazers were qualitatively and quantitatively analyzed. Phytoplankton was mainly composed of diatoms and microzooplankton mainly of tintinnids. Both fractions were less abundant than detritus. Most of the grazers belonged to the copepod Acartia tonsa. Mean filtration and ingestion rates on phytoplankton + microzooplankton were 6.44 ml grazer-1 day-1 and 0.03 µg C grazer-1 day-1, respectively. This figure increased to 6.95 ml grazer-1 day-1 and 1.65 µg C grazer-1 day-1 when detritus was included. Mean carbon-specific ingestion rates on phytoplankton and microzooplankton were 0.006 and 0.005 µg C µg C-1 day-1, respectively, whereas after the addition of detritus, the overall rate increased to 0.588 µg C µg C-1 day-1. Highly significant differences were found between grazing rates on detritus and planktonic fractions. Consumers showed higher filtration rates on microzooplankton than on phytoplankton although 78% of the cells ingested (54.7% µg C) came from the latter. The results point to a higher contribution of detritus to the natural diet of mesozooplankton in late spring. The omnivory of A. tonsa and the high turbidity of Bahía Blanca estuary may explain the differences observed among food fractions in terms of carbon intake.
Palabras clave: Grazing , Mesozooplankton , Phytoplankton , Microzooplankton , Detritus
Ver el registro completo
 
Archivos asociados
Tamaño: 3.393Mb
Formato: PDF
.
Solicitar
Licencia
info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/27749
URL: https://link.springer.com/article/10.1007%2Fs10750-008-9538-2
DOI: http://dx.doi.org/10.1007/s10750-008-9538-2
Colecciones
Articulos(CADIC)
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Articulos(IADO)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Citación
Diodato, Soledad Lorena; Hoffmeyer, Monica Susana; Contribution of planktonic and detritic fractions to the natural diet of mesozooplankton in Bahía Blanca estuary; Springer; Hydrobiologia; 614; 1; 10-2008; 83-90
Compartir
Altmétricas
 

Enviar por e-mail
Separar cada destinatario (hasta 5) con punto y coma.
  • Facebook
  • X Conicet Digital
  • Instagram
  • YouTube
  • Sound Cloud
  • LinkedIn

Los contenidos del CONICET están licenciados bajo Creative Commons Reconocimiento 2.5 Argentina License

https://www.conicet.gov.ar/ - CONICET

Inicio

Explorar

  • Autores
  • Disciplinas
  • Comunidades

Estadísticas

Novedades

  • Noticias
  • Boletines

Ayuda

Acerca de

  • CONICET Digital
  • Equipo
  • Red Federal

Contacto

Godoy Cruz 2290 (C1425FQB) CABA – República Argentina – Tel: +5411 4899-5400 repositorio@conicet.gov.ar
TÉRMINOS Y CONDICIONES