Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.

Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.

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10 pages, 7 figuraes, 3 tables

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Auteurs principaux: Tiselius, Peter, Saiz, Enric, Kiørboe, Thomas
Format: artículo biblioteca
Langue:English
Publié: Association for the Sciences of Limnology and Oceanography 2013-09
Accès en ligne:http://hdl.handle.net/10261/84632
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spelling dig-icm-es-10261-846322020-12-03T08:16:32Z Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp. Tiselius, Peter Saiz, Enric Kiørboe, Thomas 10 pages, 7 figuraes, 3 tables Detection, handling, and selection of prey are key features of suspension-feeding copepods. Using high-speed video, we determined detection distances and durations of all elements of the food gathering process in two small calanoid copepods, Paracalanus parvus and Pseudocalanus sp. Animals were freely swimming and presented with various phytoplankton species with equivalent spherical diameters ranging from 7 µm to 33 µm. Prey detection occurred very close—within a few cell radii—to the second antennae (53% of the cases) or the maxilliped (42%). There was no effect of prey size on detection distance, but larger prey caused a significantly longer handling time. Post-detection processing of the cells was exceedingly fast. The time from detection to the cell being placed at the mouth lasted 35 ± 19 ms and rejection of unwanted cells 61 ± 21 ms. Grooming of antennules and carapace occurred intermittently and lasted 215–227 ms. The weak feeding current and fast response of the copepods allowed ample time for detection of cells entrained in the feeding current and no distant olfaction was observed. Modeled effect of cell size on cell surface concentration of cue chemicals show that only cells with a radius larger than ∼ 15 µm may be detected chemically and that only very much larger and/or very leaky cells can be detected at distance. Copepods have elaborate and exceedingly fast handling techniques that allow effective prey detection and capture, but there is no evidence of remote chemically mediated sensing when feeding on algal cells up to a size of 35 µm This is a contribution to the Baltic Zooplankton Cascades (BAZOOCA) project funded by the Baltic Organizations Network for funding Science (BONUS), the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS; project 210-2008-1882 to PT), the Danish Council for Independent Research (10-085278 to TK), and the Spanish Ministry of Economy and Competitiveness (CTM2011-23480 to ES) Peer reviewed 2013-10-21T10:41:04Z 2013-10-21T10:41:04Z 2013-09 artículo http://purl.org/coar/resource_type/c_6501 Limnology and Oceanography 58(5): 1657-1666 (2013) 0024-3590 http://hdl.handle.net/10261/84632 10.4319/lo.2013.58.5.1657 en https://doi.org/10.4319/lo.2013.58.5.1657 open Association for the Sciences of Limnology and Oceanography
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
description 10 pages, 7 figuraes, 3 tables
format artículo
author Tiselius, Peter
Saiz, Enric
Kiørboe, Thomas
spellingShingle Tiselius, Peter
Saiz, Enric
Kiørboe, Thomas
Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
author_facet Tiselius, Peter
Saiz, Enric
Kiørboe, Thomas
author_sort Tiselius, Peter
title Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
title_short Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
title_full Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
title_fullStr Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
title_full_unstemmed Sensory capabilities and food capture of two small copepods, Paracalanus parvus and Pseudocalanus sp.
title_sort sensory capabilities and food capture of two small copepods, paracalanus parvus and pseudocalanus sp.
publisher Association for the Sciences of Limnology and Oceanography
publishDate 2013-09
url http://hdl.handle.net/10261/84632
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AT saizenric sensorycapabilitiesandfoodcaptureoftwosmallcopepodsparacalanusparvusandpseudocalanussp
AT kiørboethomas sensorycapabilitiesandfoodcaptureoftwosmallcopepodsparacalanusparvusandpseudocalanussp
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