The feeding ecology of the copepod Centropages typicus (Kröyer) |
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| Institution: | 1. Institut de Ciències del Mar (CSIC), P. Marítim de la Barceloneta 37-49, Barcelona, Catalonia, Spain;2. Centre d’ Océanologie de Marseille, Station Marine d’Endoume, Chemin de la Batterie des Lions, Marseille 13007, France;1. CNRS Université de la Méditerranée, Laboratoire d’Océanopraphie et de Biogéochemie, Station Marine d’Endouome Unité Mixte de Recherche 6535, Rue de la Batterie des Lions, F-13007 Marseille, France;2. Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK;1. Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth PL1 3DH, UK;2. Akvaplan-niva AS, Fram Centre, N-9296 Tromsø, Norway;3. Marine Biology and Ecology Research Centre, School of Marine Science and Engineering, University of Plymouth, Plymouth, Devon PL4 8AA, UK;1. CBET Research Group, Department of Zoology and Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country UPV/EHU, Basque Country, Spain;2. FITEAC Research Group, Department of Plant Biology and Ecology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country UPV/EHU, Basque Country, Spain;3. MarEsPlank Research Group, Department of Plant Biology and Ecology, Faculty of Science and Technology, Faculty of Pharmacy and Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country UPV/EHU, Basque Country, Spain;1. Marine Biological Laboratory, Department of Zoology, Andhra University, Post Office Lane, University Campus, Waltair 530003, India;2. Mangrove Management Group, Analytical Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium |
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| Abstract: | Here we report on the current knowledge on the feeding ecology of the planktonic copepod Centropages typicus. We describe the foraging process of C. typicus from the detection of prey to their digestion, considering also the effects of several physical variables on the feeding activity of the species. C. typicus is an omnivorous copepod that feeds on a wide spectrum of prey, from small algae (3–4 μm equivalent spherical diameter, ESD) to yolk-sac fish larvae (3.2–3.6 mm length). It uses both suspensivorous and ambush feeding strategies, depending on the characteristics of the prey. In general, C. typicus exhibits selection for large motile prey, such as ciliates or dinoflagellates, both in nature and laboratory, and this selective pattern is enhanced under moderate intensities of turbulence. Daily rations in the field are somewhat lower than those found in the laboratory, which indicates food limitation. This fact, together with the relatively modest capacity of the species to adapt to fluctuations in food availability may explain the geographical distribution of C. typicus, being restricted to near-shelf waters. In general, it does not seem that C. typicus feeding severely impacts planktonic populations. However, the occasional importance of the species in certain ecosystems is also apparent. |
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