Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes

Two plankton mesh sizes of 67 μm and 220 μm were compared to evaluate their efficiency in the capture of the smallest copepods and appendicularians present in the Buenos Aires coastal area (Argentine Sea). A total of 12 copepod species and one appendicularian species were recorded in this study. The...

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Detalles Bibliográficos
Autores principales: di Mauro, R., Capitanio, F., Viñas, M.D.
Formato: JOUR
Materias:
Appendicularia (class)
Calanoida
Copepoda
Cyclopoida
Harpacticoida
Microsetella norvegica
Oikopleura dioica
Oithona nana
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_16798759_v57_n3_p205_diMauro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_16798759_v57_n3_p205_diMauro
record_format dspace
spelling todo:paper_16798759_v57_n3_p205_diMauro2023-10-03T16:29:44Z Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes di Mauro, R. Capitanio, F. Viñas, M.D. Appendicularia (class) Calanoida Copepoda Cyclopoida Harpacticoida Microsetella norvegica Oikopleura dioica Oithona nana Two plankton mesh sizes of 67 μm and 220 μm were compared to evaluate their efficiency in the capture of the smallest copepods and appendicularians present in the Buenos Aires coastal area (Argentine Sea). A total of 12 copepod species and one appendicularian species were recorded in this study. The copepods were separated into 4 groups: harpacticoids, cyclopoids, small calanoids and large calanoids and their developmental stages. Among the cyclopoids, Oithona nana was the most abundant species, being 96.29% underestimated by the 220 μm mesh, whereas Microsetella norvegica dominated the harpacticoids and was captured exclusively by the smaller mesh. Similar results were found for copepodites I-III of small calanoids, whose net sampled underestimation reached 99.70%. On the other hand, no significant difference between meshes was found for adults and copepodites IV-V of small calanoids or any of the developmental stages of large calanoids. A great loss of biomass was observed for O. nana when applying the larger mesh. In regards to the appendicularian Oikopleura dioica, all size ranges below 1,000 μm length were better estimated by the 67 μm mesh in terms of abundance and biomass. Our results clearly show that the 67 μm mesh was more efficient in the capture of early stages of small copepods thus providing a more accurate estimation of the fish larvae prey field. Fil:di Mauro, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Capitanio, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_16798759_v57_n3_p205_diMauro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Appendicularia (class)
Calanoida
Copepoda
Cyclopoida
Harpacticoida
Microsetella norvegica
Oikopleura dioica
Oithona nana
spellingShingle Appendicularia (class)
Calanoida
Copepoda
Cyclopoida
Harpacticoida
Microsetella norvegica
Oikopleura dioica
Oithona nana
di Mauro, R.
Capitanio, F.
Viñas, M.D.
Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
topic_facet Appendicularia (class)
Calanoida
Copepoda
Cyclopoida
Harpacticoida
Microsetella norvegica
Oikopleura dioica
Oithona nana
description Two plankton mesh sizes of 67 μm and 220 μm were compared to evaluate their efficiency in the capture of the smallest copepods and appendicularians present in the Buenos Aires coastal area (Argentine Sea). A total of 12 copepod species and one appendicularian species were recorded in this study. The copepods were separated into 4 groups: harpacticoids, cyclopoids, small calanoids and large calanoids and their developmental stages. Among the cyclopoids, Oithona nana was the most abundant species, being 96.29% underestimated by the 220 μm mesh, whereas Microsetella norvegica dominated the harpacticoids and was captured exclusively by the smaller mesh. Similar results were found for copepodites I-III of small calanoids, whose net sampled underestimation reached 99.70%. On the other hand, no significant difference between meshes was found for adults and copepodites IV-V of small calanoids or any of the developmental stages of large calanoids. A great loss of biomass was observed for O. nana when applying the larger mesh. In regards to the appendicularian Oikopleura dioica, all size ranges below 1,000 μm length were better estimated by the 67 μm mesh in terms of abundance and biomass. Our results clearly show that the 67 μm mesh was more efficient in the capture of early stages of small copepods thus providing a more accurate estimation of the fish larvae prey field.
format JOUR
author di Mauro, R.
Capitanio, F.
Viñas, M.D.
author_facet di Mauro, R.
Capitanio, F.
Viñas, M.D.
author_sort di Mauro, R.
title Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
title_short Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
title_full Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
title_fullStr Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
title_full_unstemmed Capture efficiency for small dominant mesozooplankters (Copepoda, Appendicularia) off Buenos Aires province (34°S-41°S), Argentine Sea, using two plankton mesh sizes
title_sort capture efficiency for small dominant mesozooplankters (copepoda, appendicularia) off buenos aires province (34°s-41°s), argentine sea, using two plankton mesh sizes
url http://hdl.handle.net/20.500.12110/paper_16798759_v57_n3_p205_diMauro
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