Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir
Larval fish development depends largely on their ability to capture and ingest food items, and on food availability. In this context, invasive species, eutrophication and river impoundments have complex impacts on fish larvae. Using samples collected in 2005–2009 in the Salto Grande reservoir (Argen...
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todo:paper_14429985_v42_n7_p759_Paolucci2023-10-03T16:16:25Z Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir Paolucci, E.M. Leites, V. Cataldo, D.H. Boltovskoy, D. cyanobacterial blooms feeding impact fish assemblage Ichthyoplankton invasive species prey selection abundance algal bloom bivalve cyanobacterium diet eutrophication feeding behavior fish ichthyoplankton invasive species larva prey selection reservoir impoundment Argentina Salto Grande Reservoir Uruguay algae Bivalvia Cyanobacteria Limnoperna Limnoperna fortunei Microcystis Larval fish development depends largely on their ability to capture and ingest food items, and on food availability. In this context, invasive species, eutrophication and river impoundments have complex impacts on fish larvae. Using samples collected in 2005–2009 in the Salto Grande reservoir (Argentina–Uruguay), periodically affected by cyanobacterial blooms, we studied the impact of the larvae of the exotic bivalve Limnoperna fortunei (Dunker, 1857) (Bivalvia) on larval fish diets. Compared with other nearby waterbodies, the abundance of fish larvae was scarcer in the reservoir, especially during algal bloom periods. Only 20% of the larval fish with gut contents fed on L. fortunei veligers. Seven fish taxa (of a total of 12) consumed veligers of L. fortunei, but only two showed a preference for this prey. Taxonomic changes in the larval fish assemblages due to the river's impoundment, and temporal uncoupling between veliger densities (affected by the toxigenic effects of Microcystis spp.) and ichthyoplankton could account for the comparatively low trophic importance of the invasive bivalve's veligers. These results reflect the complexity of interactions brought about when the same invasive species invades different environments, underscoring that the impacts involved depend as much on the invader, as on the regional and ecological settings of the area invaded. © 2017 Ecological Society of Australia 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:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14429985_v42_n7_p759_Paolucci |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
cyanobacterial blooms feeding impact fish assemblage Ichthyoplankton invasive species prey selection abundance algal bloom bivalve cyanobacterium diet eutrophication feeding behavior fish ichthyoplankton invasive species larva prey selection reservoir impoundment Argentina Salto Grande Reservoir Uruguay algae Bivalvia Cyanobacteria Limnoperna Limnoperna fortunei Microcystis |
| spellingShingle |
cyanobacterial blooms feeding impact fish assemblage Ichthyoplankton invasive species prey selection abundance algal bloom bivalve cyanobacterium diet eutrophication feeding behavior fish ichthyoplankton invasive species larva prey selection reservoir impoundment Argentina Salto Grande Reservoir Uruguay algae Bivalvia Cyanobacteria Limnoperna Limnoperna fortunei Microcystis Paolucci, E.M. Leites, V. Cataldo, D.H. Boltovskoy, D. Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| topic_facet |
cyanobacterial blooms feeding impact fish assemblage Ichthyoplankton invasive species prey selection abundance algal bloom bivalve cyanobacterium diet eutrophication feeding behavior fish ichthyoplankton invasive species larva prey selection reservoir impoundment Argentina Salto Grande Reservoir Uruguay algae Bivalvia Cyanobacteria Limnoperna Limnoperna fortunei Microcystis |
| description |
Larval fish development depends largely on their ability to capture and ingest food items, and on food availability. In this context, invasive species, eutrophication and river impoundments have complex impacts on fish larvae. Using samples collected in 2005–2009 in the Salto Grande reservoir (Argentina–Uruguay), periodically affected by cyanobacterial blooms, we studied the impact of the larvae of the exotic bivalve Limnoperna fortunei (Dunker, 1857) (Bivalvia) on larval fish diets. Compared with other nearby waterbodies, the abundance of fish larvae was scarcer in the reservoir, especially during algal bloom periods. Only 20% of the larval fish with gut contents fed on L. fortunei veligers. Seven fish taxa (of a total of 12) consumed veligers of L. fortunei, but only two showed a preference for this prey. Taxonomic changes in the larval fish assemblages due to the river's impoundment, and temporal uncoupling between veliger densities (affected by the toxigenic effects of Microcystis spp.) and ichthyoplankton could account for the comparatively low trophic importance of the invasive bivalve's veligers. These results reflect the complexity of interactions brought about when the same invasive species invades different environments, underscoring that the impacts involved depend as much on the invader, as on the regional and ecological settings of the area invaded. © 2017 Ecological Society of Australia |
| format |
JOUR |
| author |
Paolucci, E.M. Leites, V. Cataldo, D.H. Boltovskoy, D. |
| author_facet |
Paolucci, E.M. Leites, V. Cataldo, D.H. Boltovskoy, D. |
| author_sort |
Paolucci, E.M. |
| title |
Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| title_short |
Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| title_full |
Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| title_fullStr |
Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| title_full_unstemmed |
Veligers of the invasive bivalve Limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| title_sort |
veligers of the invasive bivalve limnoperna fortunei in the diet of indigenous fish larvae in a eutrophic subtropical reservoir |
| url |
http://hdl.handle.net/20.500.12110/paper_14429985_v42_n7_p759_Paolucci |
| work_keys_str_mv |
AT paolucciem veligersoftheinvasivebivalvelimnopernafortuneiinthedietofindigenousfishlarvaeinaeutrophicsubtropicalreservoir AT leitesv veligersoftheinvasivebivalvelimnopernafortuneiinthedietofindigenousfishlarvaeinaeutrophicsubtropicalreservoir AT cataldodh veligersoftheinvasivebivalvelimnopernafortuneiinthedietofindigenousfishlarvaeinaeutrophicsubtropicalreservoir AT boltovskoyd veligersoftheinvasivebivalvelimnopernafortuneiinthedietofindigenousfishlarvaeinaeutrophicsubtropicalreservoir |
| _version_ |
1782025511869874176 |