Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom?
Temperature and nutrient concentrations were measured during a mixed bloom of Noctiluca scintillans and Gymnodinium catenatum in La Paz Bay, Gulf of California. Under laboratory conditions, we offered three concentrations of G. catenatum (312, 625, or 1015 cells mL–1) to 0.53 N. scintillans cells m...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2013-09-01
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| Series: | Ciencias Marinas |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2242 |
| _version_ | 1827330997122760704 |
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| author | José J Bustillos-Guzmán Christine J Band-Schmidt David J López-Cortés Francisco E Hernández-Sandoval Erick Núñez-Vázquez Ismael Gárate-Lizárraga |
| author_facet | José J Bustillos-Guzmán Christine J Band-Schmidt David J López-Cortés Francisco E Hernández-Sandoval Erick Núñez-Vázquez Ismael Gárate-Lizárraga |
| author_sort | José J Bustillos-Guzmán |
| collection | DOAJ |
| description |
Temperature and nutrient concentrations were measured during a mixed bloom of Noctiluca scintillans and Gymnodinium catenatum in La Paz Bay, Gulf of California. Under laboratory conditions, we offered three concentrations of G. catenatum (312, 625, or 1015 cells mL–1) to 0.53 N. scintillans cells mL–1 to study predation rates. Experiments were carried out with 750 mL of culture during a fiveday period. Sea surface temperature clearly showed a transitional period from colder to warmer water during the bloom. Field and laboratory data showed that N. scintillans fed on G. catenatum. During the trial, more than 70% of N. scintillans cells contained G. catenatum cells in their vacuoles. Ingestion rates varied; the highest ranged from 30 to 40 G. catenatum cells h–1 in each N. scintillans cell. A clear relation to the concentration of the diet was not evident. Low values of 1 to 3 G. catenatum cells h–1 in each N. scintillans cell were typical at the end of the trial. Noctiluca scintillans doubled in concentration about every 48 h; however, numerous trophonts were observed leaving the cytoplasmic membrane, suggesting cell damage. These data indicate that N. scintillans ingests G. catenatum cells but the prey appears to damage predator cells in a relatively short time.
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| first_indexed | 2024-03-07T16:26:35Z |
| format | Article |
| id | doaj.art-68f9fdda8b8a4fb89452ce0c3aceed43 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:26:35Z |
| publishDate | 2013-09-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-68f9fdda8b8a4fb89452ce0c3aceed432024-03-03T17:52:16ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532013-09-0139310.7773/cm.v39i3.2242Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom?José J Bustillos-Guzmán0Christine J Band-Schmidt1David J López-Cortés2Francisco E Hernández-Sandoval3Erick Núñez-Vázquez4Ismael Gárate-Lizárraga5Instituto Politécnico NacionalInstituto Politécnico NacionalInstituto Politécnico NacionalInstituto Politécnico NacionalInstituto Politécnico NacionalInstituto Politécnico Nacional Temperature and nutrient concentrations were measured during a mixed bloom of Noctiluca scintillans and Gymnodinium catenatum in La Paz Bay, Gulf of California. Under laboratory conditions, we offered three concentrations of G. catenatum (312, 625, or 1015 cells mL–1) to 0.53 N. scintillans cells mL–1 to study predation rates. Experiments were carried out with 750 mL of culture during a fiveday period. Sea surface temperature clearly showed a transitional period from colder to warmer water during the bloom. Field and laboratory data showed that N. scintillans fed on G. catenatum. During the trial, more than 70% of N. scintillans cells contained G. catenatum cells in their vacuoles. Ingestion rates varied; the highest ranged from 30 to 40 G. catenatum cells h–1 in each N. scintillans cell. A clear relation to the concentration of the diet was not evident. Low values of 1 to 3 G. catenatum cells h–1 in each N. scintillans cell were typical at the end of the trial. Noctiluca scintillans doubled in concentration about every 48 h; however, numerous trophonts were observed leaving the cytoplasmic membrane, suggesting cell damage. These data indicate that N. scintillans ingests G. catenatum cells but the prey appears to damage predator cells in a relatively short time. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2242 |
| spellingShingle | José J Bustillos-Guzmán Christine J Band-Schmidt David J López-Cortés Francisco E Hernández-Sandoval Erick Núñez-Vázquez Ismael Gárate-Lizárraga Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? Ciencias Marinas |
| title | Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? |
| title_full | Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? |
| title_fullStr | Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? |
| title_full_unstemmed | Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? |
| title_short | Grazing of the dinoflagellate Noctiluca scintillans on the paralytic toxin-producing dinoflagellate Gymnodinium catenatum: Does grazing eliminate cells during a bloom? |
| title_sort | grazing of the dinoflagellate noctiluca scintillans on the paralytic toxin producing dinoflagellate gymnodinium catenatum does grazing eliminate cells during a bloom |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2242 |
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