Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina

To assess the trophic impact of the planktonic larvae of the invasive Asian bivalve Limnoperna fortunei, introduced in South America around 1990, we investigated the gut contents of fish larvae collected at monthly intervals between October 2000 and March 2001 at three locations along a 600 km stret...

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Autores principales:	Paolucci, Esteban Marcelo, Cataldo, Daniel Hugo, Fuentes, Carlos Mariano, Boltovskoy, Demetrio
Publicado:	2007
Materias:	Ecological impact Ichthyoplankton Invasive species Limnoperna fortunei Paraná River Prey shift Biological organs Ecology Growth kinetics Nutrition Rivers Ecological impacts Prey shifts Biodiversity bivalve dietary shift ecological impact food consumption food supply ichthyoplankton invasive species larval development prey selection trophic status zooplankton Argentina Buenos Aires [Argentina] Parana River San Nicolas South America Animalia Bivalvia Copepoda Pisces
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v589_n1_p219_Paolucci http://hdl.handle.net/20.500.12110/paper_00188158_v589_n1_p219_Paolucci
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00188158_v589_n1_p219_Paolucci
record_format	dspace
spelling	paper:paper_00188158_v589_n1_p219_Paolucci2023-06-08T14:39:52Z Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina Paolucci, Esteban Marcelo Cataldo, Daniel Hugo Fuentes, Carlos Mariano Boltovskoy, Demetrio Ecological impact Ichthyoplankton Invasive species Limnoperna fortunei Paraná River Prey shift Biological organs Ecology Growth kinetics Nutrition Rivers Ecological impacts Ichthyoplankton Invasive species Limnoperna fortunei Prey shifts Biodiversity bivalve dietary shift ecological impact food consumption food supply ichthyoplankton invasive species larval development prey selection trophic status zooplankton Argentina Buenos Aires [Argentina] Parana River San Nicolas South America Animalia Bivalvia Copepoda Limnoperna fortunei Pisces To assess the trophic impact of the planktonic larvae of the invasive Asian bivalve Limnoperna fortunei, introduced in South America around 1990, we investigated the gut contents of fish larvae collected at monthly intervals between October 2000 and March 2001 at three locations along a 600 km stretch of the Paraná River, and during November 2004 in two areas of marginal lagoons connected to the river near the city of San Nicolás, Argentina. Zooplankton was also collected in the lagoons in 2004. In total, 11,956 fish larvae were retrieved, of which 1,511 were used for detailed analyses. Of the 15 fish taxa collected, 11 had veligers of L. fortunei in their gut. Fish larvae with empty guts represented 60% (San Nicolás) to 72% (Paraná River) of the total number of fish. Proportions of feeding fish larvae with L. fortunei veligers in their guts varied between 20% (San Nicolás) and 56% (Paraná River); in 15% of the guts analyzed, L. fortunei was the only food item recorded. For those specimens that had consumed L. fortunei larvae and any other food item, L. fortunei was the most important item in 55% (Paraná River) to 71% (San Nicolás) of the animals in terms of biomass. No major temporal or spatial changes in the diet were observed along the Paraná River, but the relative biomass contribution of L. fortunei larvae differed strongly in fishes of different developmental stage. In protolarvae and mesolarvae, veligers accounted for 30-35% of the gut contents. In metalarvae, veligers accounted for only 3%, indicating enhanced food supply for the earliest fish life stages. Comparison of the relative proportions of the three main zooplankton types (L. fortunei veligers, cladocerans, and copepods) in the water and in larval fish guts indicates that L. fortunei is always selected positively over the other two prey types. While our results strongly suggest that the expansion of L. fortunei results in an enhanced food supply for local fish populations, they do not necessarily imply that the overall effect on the ecosystem in general, and on the fish fauna in particular is beneficial. © 2007 Springer Science+Business Media B.V. Fil:Paolucci, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cataldo, D.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fuentes, C.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v589_n1_p219_Paolucci http://hdl.handle.net/20.500.12110/paper_00188158_v589_n1_p219_Paolucci
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ecological impact Ichthyoplankton Invasive species Limnoperna fortunei Paraná River Prey shift Biological organs Ecology Growth kinetics Nutrition Rivers Ecological impacts Ichthyoplankton Invasive species Limnoperna fortunei Prey shifts Biodiversity bivalve dietary shift ecological impact food consumption food supply ichthyoplankton invasive species larval development prey selection trophic status zooplankton Argentina Buenos Aires [Argentina] Parana River San Nicolas South America Animalia Bivalvia Copepoda Limnoperna fortunei Pisces
spellingShingle	Ecological impact Ichthyoplankton Invasive species Limnoperna fortunei Paraná River Prey shift Biological organs Ecology Growth kinetics Nutrition Rivers Ecological impacts Ichthyoplankton Invasive species Limnoperna fortunei Prey shifts Biodiversity bivalve dietary shift ecological impact food consumption food supply ichthyoplankton invasive species larval development prey selection trophic status zooplankton Argentina Buenos Aires [Argentina] Parana River San Nicolas South America Animalia Bivalvia Copepoda Limnoperna fortunei Pisces Paolucci, Esteban Marcelo Cataldo, Daniel Hugo Fuentes, Carlos Mariano Boltovskoy, Demetrio Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
topic_facet	Ecological impact Ichthyoplankton Invasive species Limnoperna fortunei Paraná River Prey shift Biological organs Ecology Growth kinetics Nutrition Rivers Ecological impacts Ichthyoplankton Invasive species Limnoperna fortunei Prey shifts Biodiversity bivalve dietary shift ecological impact food consumption food supply ichthyoplankton invasive species larval development prey selection trophic status zooplankton Argentina Buenos Aires [Argentina] Parana River San Nicolas South America Animalia Bivalvia Copepoda Limnoperna fortunei Pisces
description	To assess the trophic impact of the planktonic larvae of the invasive Asian bivalve Limnoperna fortunei, introduced in South America around 1990, we investigated the gut contents of fish larvae collected at monthly intervals between October 2000 and March 2001 at three locations along a 600 km stretch of the Paraná River, and during November 2004 in two areas of marginal lagoons connected to the river near the city of San Nicolás, Argentina. Zooplankton was also collected in the lagoons in 2004. In total, 11,956 fish larvae were retrieved, of which 1,511 were used for detailed analyses. Of the 15 fish taxa collected, 11 had veligers of L. fortunei in their gut. Fish larvae with empty guts represented 60% (San Nicolás) to 72% (Paraná River) of the total number of fish. Proportions of feeding fish larvae with L. fortunei veligers in their guts varied between 20% (San Nicolás) and 56% (Paraná River); in 15% of the guts analyzed, L. fortunei was the only food item recorded. For those specimens that had consumed L. fortunei larvae and any other food item, L. fortunei was the most important item in 55% (Paraná River) to 71% (San Nicolás) of the animals in terms of biomass. No major temporal or spatial changes in the diet were observed along the Paraná River, but the relative biomass contribution of L. fortunei larvae differed strongly in fishes of different developmental stage. In protolarvae and mesolarvae, veligers accounted for 30-35% of the gut contents. In metalarvae, veligers accounted for only 3%, indicating enhanced food supply for the earliest fish life stages. Comparison of the relative proportions of the three main zooplankton types (L. fortunei veligers, cladocerans, and copepods) in the water and in larval fish guts indicates that L. fortunei is always selected positively over the other two prey types. While our results strongly suggest that the expansion of L. fortunei results in an enhanced food supply for local fish populations, they do not necessarily imply that the overall effect on the ecosystem in general, and on the fish fauna in particular is beneficial. © 2007 Springer Science+Business Media B.V.
author	Paolucci, Esteban Marcelo Cataldo, Daniel Hugo Fuentes, Carlos Mariano Boltovskoy, Demetrio
author_facet	Paolucci, Esteban Marcelo Cataldo, Daniel Hugo Fuentes, Carlos Mariano Boltovskoy, Demetrio
author_sort	Paolucci, Esteban Marcelo
title	Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
title_short	Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
title_full	Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
title_fullStr	Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
title_full_unstemmed	Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina
title_sort	larvae of the invasive species limnoperna fortunei (bivalvia) in the diet of fish larvae in the paraná river, argentina
publishDate	2007
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v589_n1_p219_Paolucci http://hdl.handle.net/20.500.12110/paper_00188158_v589_n1_p219_Paolucci
work_keys_str_mv	AT paolucciestebanmarcelo larvaeoftheinvasivespecieslimnopernafortuneibivalviainthedietoffishlarvaeintheparanariverargentina AT cataldodanielhugo larvaeoftheinvasivespecieslimnopernafortuneibivalviainthedietoffishlarvaeintheparanariverargentina AT fuentescarlosmariano larvaeoftheinvasivespecieslimnopernafortuneibivalviainthedietoffishlarvaeintheparanariverargentina AT boltovskoydemetrio larvaeoftheinvasivespecieslimnopernafortuneibivalviainthedietoffishlarvaeintheparanariverargentina
_version_	1768546659757719552

Larvae of the invasive species Limnoperna fortunei (Bivalvia) in the diet of fish larvae in the Paraná River, Argentina

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