A coexistence mechanism for two freshwater prawns in the Paraná river floodplain

Autores
Collins, Pablo Agustin
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
ABSTRACTThis study examined the circadian feeding cycles of two sympatric decapod prawns Palaemonetes argentinus (Nobili, 1901) and Macrobrachium borellii (Nobili, 1896) as a coexistence mechanism. The work was done in some shallow lakes of the alluvial valley of the Paraná River (Santa Fe, Argentina). Both consume similar food items, but differ in their feeding times.  Macrobrachium borellii stomach fullness was greater during night than day, whereas P. argentinus foraging activity occurred by day. Trophic niche breadth was wide and similar in both species, but was expanded in P. argentinus at night when M. borellii feeding activity increased. Niche overlap fluctuated without a definite pattern. Adaptive modifications of circadian feeding rhythms play an important role in the coexistence of these species.
Fil: Collins, Pablo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Materia
COEXISTENCE MECHANISM
FRESHWATER PRAWNS
Nivel de accesibilidad
acceso abierto
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:11336/102430
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A coexistence mechanism for two freshwater prawns in the Paraná river floodplainCollins, Pablo AgustinCOEXISTENCE MECHANISMFRESHWATER PRAWNShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1ABSTRACTThis study examined the circadian feeding cycles of two sympatric decapod prawns Palaemonetes argentinus (Nobili, 1901) and Macrobrachium borellii (Nobili, 1896) as a coexistence mechanism. The work was done in some shallow lakes of the alluvial valley of the Paraná River (Santa Fe, Argentina). Both consume similar food items, but differ in their feeding times.  Macrobrachium borellii stomach fullness was greater during night than day, whereas P. argentinus foraging activity occurred by day. Trophic niche breadth was wide and similar in both species, but was expanded in P. argentinus at night when M. borellii feeding activity increased. Niche overlap fluctuated without a definite pattern. Adaptive modifications of circadian feeding rhythms play an important role in the coexistence of these species.Fil: Collins, Pablo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaCrustacean Society2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/102430Collins, Pablo Agustin; A coexistence mechanism for two freshwater prawns in the Paraná river floodplain; Crustacean Society; Journal of Crustacean Biology; 25; 2; 12-2005; 219-2250278-0372CONICET DigitalCONICETenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:09:12Zoai:ri.conicet.gov.ar:11336/102430instacron: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:34982025-10-22 11:09:12.472CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
title A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
spellingShingle A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
Collins, Pablo Agustin
COEXISTENCE MECHANISM
FRESHWATER PRAWNS
title_short A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
title_full A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
title_fullStr A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
title_full_unstemmed A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
title_sort A coexistence mechanism for two freshwater prawns in the Paraná river floodplain
dc.creator.none.fl_str_mv Collins, Pablo Agustin
author Collins, Pablo Agustin
author_facet Collins, Pablo Agustin
author_role author
dc.subject.none.fl_str_mv COEXISTENCE MECHANISM
FRESHWATER PRAWNS
topic COEXISTENCE MECHANISM
FRESHWATER PRAWNS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv ABSTRACTThis study examined the circadian feeding cycles of two sympatric decapod prawns Palaemonetes argentinus (Nobili, 1901) and Macrobrachium borellii (Nobili, 1896) as a coexistence mechanism. The work was done in some shallow lakes of the alluvial valley of the Paraná River (Santa Fe, Argentina). Both consume similar food items, but differ in their feeding times.  Macrobrachium borellii stomach fullness was greater during night than day, whereas P. argentinus foraging activity occurred by day. Trophic niche breadth was wide and similar in both species, but was expanded in P. argentinus at night when M. borellii feeding activity increased. Niche overlap fluctuated without a definite pattern. Adaptive modifications of circadian feeding rhythms play an important role in the coexistence of these species.
Fil: Collins, Pablo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
description ABSTRACTThis study examined the circadian feeding cycles of two sympatric decapod prawns Palaemonetes argentinus (Nobili, 1901) and Macrobrachium borellii (Nobili, 1896) as a coexistence mechanism. The work was done in some shallow lakes of the alluvial valley of the Paraná River (Santa Fe, Argentina). Both consume similar food items, but differ in their feeding times.  Macrobrachium borellii stomach fullness was greater during night than day, whereas P. argentinus foraging activity occurred by day. Trophic niche breadth was wide and similar in both species, but was expanded in P. argentinus at night when M. borellii feeding activity increased. Niche overlap fluctuated without a definite pattern. Adaptive modifications of circadian feeding rhythms play an important role in the coexistence of these species.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
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/11336/102430
Collins, Pablo Agustin; A coexistence mechanism for two freshwater prawns in the Paraná river floodplain; Crustacean Society; Journal of Crustacean Biology; 25; 2; 12-2005; 219-225
0278-0372
CONICET Digital
CONICET
url http://hdl.handle.net/11336/102430
identifier_str_mv Collins, Pablo Agustin; A coexistence mechanism for two freshwater prawns in the Paraná river floodplain; Crustacean Society; Journal of Crustacean Biology; 25; 2; 12-2005; 219-225
0278-0372
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
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 Crustacean Society
publisher.none.fl_str_mv Crustacean Society
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_ 1846781432895111168
score 12.982451

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