Predation by Acartia tonsa Dana on planktonic ciliates and rotifers |
| |
| Institution: | 1. Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, U.S.A.;2. Biology Department, Oberlin College, Oberlin, Ohio, U.S.A.;1. Laboratorio de Química Ambiental y Biogeoquímica, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Av. Calchaqui km 23500, 1888 Florencio Varela, Buenos Aires, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, CP C1033AA Ciudad de Buenos Aires, Argentina;3. Comisión de Investigaciones Científicas (CIC), Provincia de Buenos Aires, Calle 10 y 526, 1900 La Plata, Argentina;1. IAEA Environment Laboratories, 4 Quai Antoine, MC 98000, Monaco;2. Institute Bobby, 8 Allee des Orangers, 06320, Cap d’Ail, France;1. Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA;2. Instituto de Ecología, Genética y Evolución de Buenos Aires (UBA-CONICET) y Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EHA, Argentina;3. Instituto Antártico Argentino, Dirección Nacional del Antártico, Buenos Aires C1010AAZ, Argentina;1. Instituto de Astronomía y Física del Espacio (IAFE), Consejo Nacional de lnvestigaciones Cientificas y Técnicas, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina;2. Royal Belgian Institute of Natural Sciences (RBINS), Operational Directorate Natural Environment, Brussels, Belgium;3. Instituto de Investigación y Desarrollo Pesquero (INIDEP), Argentina |
| |
| Abstract: | In laboratory experiments, adults and nauplii of the calanoid copepod Acartia tonsa Dana feed on planktonic ciliates and rotifers. Adults have a higher clearing rate for planktonic ciliates and rotifers than for phytoplankton. Adult copepods have a maximum clearing rate of ≈200 ml copepod?1 · d?1 for large ciliates, with lower clearing rates for small ciliates. Nauplii have higher clearance for small than for large ciliates. Addition of ciliates or rotifers to the diet of A. tonsa enhances egg production; this effect is due to improved food quality. Microzooplankton may be an important component of the diet of A. tonsa even when phytoplankton are plentiful. Selective predation by copepods probably influences the population dynamics of planktonic ciliates and rotifers in coastal waters. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
