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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/19203
Ver los metadatos del registro completo
id |
CONICETDig_1e039071ec9e95e9e5a37c1f2bd6ca45 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/19203 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
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 |
_version_ |
1844613725775986688 |
score |
13.070432 |