Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis

Autores
Gonçalves, Rodrigo Javier; van Someren Gréve, Hans; Couespel, Damien; Kiørboe, Thomas
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We examined size-dependent prey detection and prey capture in free-swimming Temora longicornis using video observations, particle image velocimetry (PIV), and bottle incubations with phytoplankton prey sizes within the range 6-60 µm equivalent spherical diameter (ESD). T. longicornis generates feeding currents by oscillating its appendages at about 25 Hz. Prey cells >10 µm ESD are perceived and captured individually. A capture response was elicited when prey was touched by (or within a few cell radii from) the setae on the feeding appendages. The extension of the setae defines the prey encounter cross section, which is therefore independent of prey size. The flux of water through the encounter area, estimated from PIV, was ca. 150 ml ind.-1 d-1, which represents the maximum possible clearance rates and was similar to that estimated in incubation experiments. However, while the detection probability was nearly 100% for cells >10-15 µm, it declined rapidly for smaller cells. Conversely, the probability that a cell which elicited a capture response was actually ingested declined with increased cell size, from nearly 100% for small cells, to ~0% for the largest cells examined. The resulting prey size spectrum, predicted as the product of the cell-size-specific encounter rates and capture probabilities, was dome-shaped, with a maximum around 20-30 µm ESD. The prey size spectrum from incubation experiments had a similar shape and an optimum range of 30-50 µm ESD. The mechanistic underpinning of the prey size spectrum suggested here deviates from previous descriptions mainly in the mechanism and range of prey detection.
Fil: Gonçalves, Rodrigo Javier. Technical University of Denmark; Dinamarca. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: van Someren Gréve, Hans. Technical University of Denmark; Dinamarca
Fil: Couespel, Damien. Technical University of Denmark; Dinamarca
Fil: Kiørboe, Thomas. Technical University of Denmark; Dinamarca
Materia
CALANOID COPEPODS
FEEDING CURRENTS
PREY CAPTURE
PREY DETECTION
PREY SIZE
SIZE SPECTRUM
TEMORA LONGICORNIS
ZOOPLANKTON
Nivel de accesibilidad
acceso embargado
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/19203

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network_name_str CONICET Digital (CONICET)
spelling Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornisGonçalves, Rodrigo Javiervan Someren Gréve, HansCouespel, DamienKiørboe, ThomasCALANOID COPEPODSFEEDING CURRENTSPREY CAPTUREPREY DETECTIONPREY SIZESIZE SPECTRUMTEMORA LONGICORNISZOOPLANKTONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We examined size-dependent prey detection and prey capture in free-swimming Temora longicornis using video observations, particle image velocimetry (PIV), and bottle incubations with phytoplankton prey sizes within the range 6-60 µm equivalent spherical diameter (ESD). T. longicornis generates feeding currents by oscillating its appendages at about 25 Hz. Prey cells >10 µm ESD are perceived and captured individually. A capture response was elicited when prey was touched by (or within a few cell radii from) the setae on the feeding appendages. The extension of the setae defines the prey encounter cross section, which is therefore independent of prey size. The flux of water through the encounter area, estimated from PIV, was ca. 150 ml ind.-1 d-1, which represents the maximum possible clearance rates and was similar to that estimated in incubation experiments. However, while the detection probability was nearly 100% for cells >10-15 µm, it declined rapidly for smaller cells. Conversely, the probability that a cell which elicited a capture response was actually ingested declined with increased cell size, from nearly 100% for small cells, to ~0% for the largest cells examined. The resulting prey size spectrum, predicted as the product of the cell-size-specific encounter rates and capture probabilities, was dome-shaped, with a maximum around 20-30 µm ESD. The prey size spectrum from incubation experiments had a similar shape and an optimum range of 30-50 µm ESD. The mechanistic underpinning of the prey size spectrum suggested here deviates from previous descriptions mainly in the mechanism and range of prey detection.Fil: Gonçalves, Rodrigo Javier. Technical University of Denmark; Dinamarca. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: van Someren Gréve, Hans. Technical University of Denmark; DinamarcaFil: Couespel, Damien. Technical University of Denmark; DinamarcaFil: Kiørboe, Thomas. Technical University of Denmark; DinamarcaInter-research2014-12-15info:eu-repo/date/embargoEnd/2019-12-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19203Gonçalves, Rodrigo Javier; van Someren Gréve, Hans; Couespel, Damien; Kiørboe, Thomas; Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis; Inter-research; Marine Ecology Progress Series; 517; 15-12-2014; 61-740171-86301616-1599CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/meps/v517/p61-74/info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11039info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:44Zoai:ri.conicet.gov.ar:11336/19203instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:57:44.869CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
title Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
spellingShingle Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
Gonçalves, Rodrigo Javier
CALANOID COPEPODS
FEEDING CURRENTS
PREY CAPTURE
PREY DETECTION
PREY SIZE
SIZE SPECTRUM
TEMORA LONGICORNIS
ZOOPLANKTON
title_short Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
title_full Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
title_fullStr Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
title_full_unstemmed Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
title_sort Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis
dc.creator.none.fl_str_mv Gonçalves, Rodrigo Javier
van Someren Gréve, Hans
Couespel, Damien
Kiørboe, Thomas
author Gonçalves, Rodrigo Javier
author_facet Gonçalves, Rodrigo Javier
van Someren Gréve, Hans
Couespel, Damien
Kiørboe, Thomas
author_role author
author2 van Someren Gréve, Hans
Couespel, Damien
Kiørboe, Thomas
author2_role author
author
author
dc.subject.none.fl_str_mv CALANOID COPEPODS
FEEDING CURRENTS
PREY CAPTURE
PREY DETECTION
PREY SIZE
SIZE SPECTRUM
TEMORA LONGICORNIS
ZOOPLANKTON
topic CALANOID COPEPODS
FEEDING CURRENTS
PREY CAPTURE
PREY DETECTION
PREY SIZE
SIZE SPECTRUM
TEMORA LONGICORNIS
ZOOPLANKTON
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We examined size-dependent prey detection and prey capture in free-swimming Temora longicornis using video observations, particle image velocimetry (PIV), and bottle incubations with phytoplankton prey sizes within the range 6-60 µm equivalent spherical diameter (ESD). T. longicornis generates feeding currents by oscillating its appendages at about 25 Hz. Prey cells >10 µm ESD are perceived and captured individually. A capture response was elicited when prey was touched by (or within a few cell radii from) the setae on the feeding appendages. The extension of the setae defines the prey encounter cross section, which is therefore independent of prey size. The flux of water through the encounter area, estimated from PIV, was ca. 150 ml ind.-1 d-1, which represents the maximum possible clearance rates and was similar to that estimated in incubation experiments. However, while the detection probability was nearly 100% for cells >10-15 µm, it declined rapidly for smaller cells. Conversely, the probability that a cell which elicited a capture response was actually ingested declined with increased cell size, from nearly 100% for small cells, to ~0% for the largest cells examined. The resulting prey size spectrum, predicted as the product of the cell-size-specific encounter rates and capture probabilities, was dome-shaped, with a maximum around 20-30 µm ESD. The prey size spectrum from incubation experiments had a similar shape and an optimum range of 30-50 µm ESD. The mechanistic underpinning of the prey size spectrum suggested here deviates from previous descriptions mainly in the mechanism and range of prey detection.
Fil: Gonçalves, Rodrigo Javier. Technical University of Denmark; Dinamarca. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: van Someren Gréve, Hans. Technical University of Denmark; Dinamarca
Fil: Couespel, Damien. Technical University of Denmark; Dinamarca
Fil: Kiørboe, Thomas. Technical University of Denmark; Dinamarca
description We examined size-dependent prey detection and prey capture in free-swimming Temora longicornis using video observations, particle image velocimetry (PIV), and bottle incubations with phytoplankton prey sizes within the range 6-60 µm equivalent spherical diameter (ESD). T. longicornis generates feeding currents by oscillating its appendages at about 25 Hz. Prey cells >10 µm ESD are perceived and captured individually. A capture response was elicited when prey was touched by (or within a few cell radii from) the setae on the feeding appendages. The extension of the setae defines the prey encounter cross section, which is therefore independent of prey size. The flux of water through the encounter area, estimated from PIV, was ca. 150 ml ind.-1 d-1, which represents the maximum possible clearance rates and was similar to that estimated in incubation experiments. However, while the detection probability was nearly 100% for cells >10-15 µm, it declined rapidly for smaller cells. Conversely, the probability that a cell which elicited a capture response was actually ingested declined with increased cell size, from nearly 100% for small cells, to ~0% for the largest cells examined. The resulting prey size spectrum, predicted as the product of the cell-size-specific encounter rates and capture probabilities, was dome-shaped, with a maximum around 20-30 µm ESD. The prey size spectrum from incubation experiments had a similar shape and an optimum range of 30-50 µm ESD. The mechanistic underpinning of the prey size spectrum suggested here deviates from previous descriptions mainly in the mechanism and range of prey detection.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-15
info:eu-repo/date/embargoEnd/2019-12-16
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/19203
Gonçalves, Rodrigo Javier; van Someren Gréve, Hans; Couespel, Damien; Kiørboe, Thomas; Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis; Inter-research; Marine Ecology Progress Series; 517; 15-12-2014; 61-74
0171-8630
1616-1599
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19203
identifier_str_mv Gonçalves, Rodrigo Javier; van Someren Gréve, Hans; Couespel, Damien; Kiørboe, Thomas; Mechanisms of prey size selecon in a suspension feeding copepod, Temora longicornis; Inter-research; Marine Ecology Progress Series; 517; 15-12-2014; 61-74
0171-8630
1616-1599
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/meps/v517/p61-74/
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11039
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Inter-research
publisher.none.fl_str_mv Inter-research
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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