Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda)
The integrity of aquatic ecosystems is being challenged worldwide by invading species, which has been one of the frequent causes of biodiversity loss. The invader may cause extinctions of vulnerable native species through predation, grazing, competition and habitat alteration. Daphnia lumholtzi G. O...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842009000300010&lng=en&tlng=en |
| _version_ | 1819142482351357952 |
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| author | NR. Simões BA. Robertson FA. Lansac-Tôha EM. Takahashi CC. Bonecker LFM. Velho CY. Joko |
| author_facet | NR. Simões BA. Robertson FA. Lansac-Tôha EM. Takahashi CC. Bonecker LFM. Velho CY. Joko |
| author_sort | NR. Simões |
| collection | DOAJ |
| description | The integrity of aquatic ecosystems is being challenged worldwide by invading species, which has been one of the frequent causes of biodiversity loss. The invader may cause extinctions of vulnerable native species through predation, grazing, competition and habitat alteration. Daphnia lumholtzi G. O. Sars, 1885, a native cladoceran from Australia, Southwestern Asia and North Africa, has recently been found in the Neotropical region. The D. lumholtzi records from the Upper Paraná River floodplain were restricted to the Pombas floodplain lake (22º 47' 55.92" S and 53º 21' 32.58" W) and Pau Véio Backwater (22º 44' 50.76" S and 53º 15' 11.16" W), in 2003 and 2008, respectively. This species can be distinguished from the other Daphnia species registered in Brazil by the conspicuous pointed fornix, the sizes of the tail spine and helmet, and a carapace ventral margin with strong spines. The high temperatures in the tropical region, as well as the increase in water transparency and the decrease in nutrient concentration observed in the environments of the Upper Paraná River floodplain due to the upstream retention by dams, may favor the development of D. lumholtzi populations. The development of populations of D. lumholtzi in natural environments of the Upper Paraná River floodplain may suggest that this species is establishing in the Neotropical region. |
| first_indexed | 2024-12-22T12:11:03Z |
| format | Article |
| id | doaj.art-b935f932bd38427fb0e6f0c720f4b336 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-22T12:11:03Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-b935f932bd38427fb0e6f0c720f4b3362022-12-21T18:26:18ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-4375692 suppl55155810.1590/S1519-69842009000300010S1519-69842009000300010Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda)NR. Simões0BA. Robertson1FA. Lansac-Tôha2EM. Takahashi3CC. Bonecker4LFM. Velho5CY. Joko6Universidade Estadual de MaringáInstituto Nacional de Pesquisas da AmazôniaUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáThe integrity of aquatic ecosystems is being challenged worldwide by invading species, which has been one of the frequent causes of biodiversity loss. The invader may cause extinctions of vulnerable native species through predation, grazing, competition and habitat alteration. Daphnia lumholtzi G. O. Sars, 1885, a native cladoceran from Australia, Southwestern Asia and North Africa, has recently been found in the Neotropical region. The D. lumholtzi records from the Upper Paraná River floodplain were restricted to the Pombas floodplain lake (22º 47' 55.92" S and 53º 21' 32.58" W) and Pau Véio Backwater (22º 44' 50.76" S and 53º 15' 11.16" W), in 2003 and 2008, respectively. This species can be distinguished from the other Daphnia species registered in Brazil by the conspicuous pointed fornix, the sizes of the tail spine and helmet, and a carapace ventral margin with strong spines. The high temperatures in the tropical region, as well as the increase in water transparency and the decrease in nutrient concentration observed in the environments of the Upper Paraná River floodplain due to the upstream retention by dams, may favor the development of D. lumholtzi populations. The development of populations of D. lumholtzi in natural environments of the Upper Paraná River floodplain may suggest that this species is establishing in the Neotropical region.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842009000300010&lng=en&tlng=enDaphnia lumholtziexotic speciesneotropicalzooplankton |
| spellingShingle | NR. Simões BA. Robertson FA. Lansac-Tôha EM. Takahashi CC. Bonecker LFM. Velho CY. Joko Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) Brazilian Journal of Biology Daphnia lumholtzi exotic species neotropical zooplankton |
| title | Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) |
| title_full | Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) |
| title_fullStr | Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) |
| title_full_unstemmed | Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) |
| title_short | Exotic species of zooplankton in the Upper Paraná River floodplain, Daphnia lumholtzi Sars, 1885 (Crustacea: Branchiopoda) |
| title_sort | exotic species of zooplankton in the upper parana river floodplain daphnia lumholtzi sars 1885 crustacea branchiopoda |
| topic | Daphnia lumholtzi exotic species neotropical zooplankton |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842009000300010&lng=en&tlng=en |
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