Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei
Previous work has shown that the invasive bivalve Limnoperna fortunei has had a measurable impact on local food webs, but knowledge of the trophic interactions involved is still very limited. On the basis of samples collected along the lower Paraguay-middle Paraná rivers, we studied the feeding beha...
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todo:paper_00188158_v745_n1_p211_Paolucci2023-10-03T14:16:07Z Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei Paolucci, E.M. Almada, P. Cataldo, D.H. Boltovskoy, D. Dietary shift Feeding plasticity Fish larvae Ichthyoplankton Invasive species Limnoperna fortunei Prey selection South America abundance bivalve consumption behavior dietary shift fish larva mussel culture native species trophic interaction Paraguay Parana River Bivalvia Limnoperna Limnoperna fortunei Previous work has shown that the invasive bivalve Limnoperna fortunei has had a measurable impact on local food webs, but knowledge of the trophic interactions involved is still very limited. On the basis of samples collected along the lower Paraguay-middle Paraná rivers, we studied the feeding behavior and selectivity of larval fish, with emphasis on veligers of the introduced bivalve L. fortunei. Among feeding larvae (i.e., without a yolk sac), 16.5% had only Limnoperna veligers in their guts, while 15.6% had veligers and some other prey. Half of the fish taxa recorded (8 out of a total of 16) consumed Limnoperna veligers. The Paraguay and Paraná rivers differed strongly in the proportions of fish larvae that consumed veligers: 14 and 68%, respectively. This difference paralleled the availability of veligers in the water column, which was significantly lower in the Paraguay (0.8 ± 0.5 ind. l−1) than in the Paraná River (5.5 ± 2.3 ind. l−1). Conversely, cladocerans, originally the staple food of fish larvae, were more abundant in the Paraguay (consumed by 48% of the individuals) than in the Paraná River (26%). These results indicate that, when widely available, Limnoperna veligers largely replace the original prey of fish larvae, especially in their younger stages (protolarvae). © Springer International Publishing Switzerland 2014. Fil:Paolucci, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Almada, P. 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_00188158_v745_n1_p211_Paolucci |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Dietary shift Feeding plasticity Fish larvae Ichthyoplankton Invasive species Limnoperna fortunei Prey selection South America abundance bivalve consumption behavior dietary shift fish larva mussel culture native species trophic interaction Paraguay Parana River Bivalvia Limnoperna Limnoperna fortunei |
| spellingShingle |
Dietary shift Feeding plasticity Fish larvae Ichthyoplankton Invasive species Limnoperna fortunei Prey selection South America abundance bivalve consumption behavior dietary shift fish larva mussel culture native species trophic interaction Paraguay Parana River Bivalvia Limnoperna Limnoperna fortunei Paolucci, E.M. Almada, P. Cataldo, D.H. Boltovskoy, D. Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| topic_facet |
Dietary shift Feeding plasticity Fish larvae Ichthyoplankton Invasive species Limnoperna fortunei Prey selection South America abundance bivalve consumption behavior dietary shift fish larva mussel culture native species trophic interaction Paraguay Parana River Bivalvia Limnoperna Limnoperna fortunei |
| description |
Previous work has shown that the invasive bivalve Limnoperna fortunei has had a measurable impact on local food webs, but knowledge of the trophic interactions involved is still very limited. On the basis of samples collected along the lower Paraguay-middle Paraná rivers, we studied the feeding behavior and selectivity of larval fish, with emphasis on veligers of the introduced bivalve L. fortunei. Among feeding larvae (i.e., without a yolk sac), 16.5% had only Limnoperna veligers in their guts, while 15.6% had veligers and some other prey. Half of the fish taxa recorded (8 out of a total of 16) consumed Limnoperna veligers. The Paraguay and Paraná rivers differed strongly in the proportions of fish larvae that consumed veligers: 14 and 68%, respectively. This difference paralleled the availability of veligers in the water column, which was significantly lower in the Paraguay (0.8 ± 0.5 ind. l−1) than in the Paraná River (5.5 ± 2.3 ind. l−1). Conversely, cladocerans, originally the staple food of fish larvae, were more abundant in the Paraguay (consumed by 48% of the individuals) than in the Paraná River (26%). These results indicate that, when widely available, Limnoperna veligers largely replace the original prey of fish larvae, especially in their younger stages (protolarvae). © Springer International Publishing Switzerland 2014. |
| format |
JOUR |
| author |
Paolucci, E.M. Almada, P. Cataldo, D.H. Boltovskoy, D. |
| author_facet |
Paolucci, E.M. Almada, P. Cataldo, D.H. Boltovskoy, D. |
| author_sort |
Paolucci, E.M. |
| title |
Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| title_short |
Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| title_full |
Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| title_fullStr |
Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| title_full_unstemmed |
Native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve Limnoperna fortunei |
| title_sort |
native fish larvae take advantage of introduced mussel larvae: field evidence of feeding preferences on veligers of the introduced freshwater bivalve limnoperna fortunei |
| url |
http://hdl.handle.net/20.500.12110/paper_00188158_v745_n1_p211_Paolucci |
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