Littoral rotifers from the state of Mato Grosso, Brazil

Turner, Paul N.; Silva, C. Da

doi:10.1080/01650529209360881

Cited by 14 publications

(5 citation statements)

References 11 publications

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“…An illustrated record (Ahlstrom, 1938) does not concern L. unguitata (see Segers, 1995a) . One of the few non-illustrated records of this taxon from South America (Turner & Da Silva, 1992) could not be confirmed (Turner, in litt . ) .…”

Section: Eastern Hemisphere Taxamentioning

confidence: 99%

The biogeography of littoral Lecane Rotifera

Segers

1996

Hydrobiologia

100

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Little is known on the biogeography of Rotifera, particularly regarding the littoral taxa . Here, the biogeography of the most specious group of littoral Rotifera, Lecane, is discussed based on a recent revision of the group, and considering only verified records .Only 41 .3% of all 167 Lecane morphospecies are widely distributed . Of these, 21 (12 .6%) are cosmopolitan (sensu strictu), 26 (15 .6%) are Tropicopolitan. There are 6 (3 .6%) Arctic-temperate and Pantropical taxa . These categories of widely distributed taxa are not clear-cut, as differences in latitudinal distribution are largely gradual .

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Section: Eastern Hemisphere Taxamentioning

confidence: 99%

The biogeography of littoral Lecane Rotifera

Segers

1996

Hydrobiologia

100

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“…The higher diversity observed for the Lecanidae and Brachionidae families was also true for these families in the Pantanal Matogrossense (States of Mato Grosso do Sul and Mato Grosso) (Turner & da Silva, 1992;Bonecker et al, 1998b;Martínez et al, 2000), the floodplains of the Middle Paraná River (Argentine stretch) (José de Paggi, 1996), the Upper Paraná River (Brazilian stretch) (Sendacz, 1993), and the rivers Amazon (Robertson & Hardy, 1984;Bozelli, 1992), Orinoco (Twombly & Lewis Jr., 1987;Vásquez & Rey, 1989), Upper Orthon (Bolívia, Barbosa et al, 1999), and the Niger (Nigeria, Segers et al, 1993). The greatest occurrence of species of the genus Lecane in tropical regions was also mentioned by Koste & Shiel (1983), Bozelli (1992), Bonecker et al (1994), Dussart et al (1984), Dabés (1995), Koste (1999), Sharma & Sharma (2001).…”

Section: Discussionmentioning

confidence: 88%

Rotifers of the upper Paraná River floodplain: additions to the checklist

et al. 2003

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Rotifers present a high diversity in freshwater ecosystems. This study registered 11 genera and 42 species, new records for the Upper Paraná River floodplain. These results showed an increase in rotifer diversity in this ecosystem from 184 to 230 species. Among them some were registered only in the rivers and others in the lagoons. Thirty-seven species occurred in the littoral zone and 34 species in the pelagic; 3 species were registered only in the former zone and 2 species only in the latter. The lagoons presented the greatest richness, probably because of the greater stability, low current velocity, and the extensive aquatic macrophyte banks in the littoral zone of these environments as compared to those of the rivers. The highest number of species in the littoral habitats occurred due to the greater influence of shoreline vegetation, which allows greater habitat diversification. This fact contributed to the occurrence of non-planktonic species in the zooplankton samples.Key words: rotifers, floodplain, richness, new records, Paraná river. RESUMO Rotíferos da planície de inundação do alto rio Paraná: novas ocorrênciasOs rotíferos apresentam elevada diversidade em ambientes aquáticos continentais. Este estudo mostra novas ocorrências de 12 gêneros e 42 espécies desse grupo na planície de inundação do alto rio Paraná, o que incrementa o registro de 184 espécies para 230 espécies nesse ecossistema. Entre esses novos registros, algumas espécies ocorreram somente em lagoas e outras, apenas em rios. Foram encontradas 37 espécies na região litorânea e 34 na região pelágica dos ambientes estudados, dentre estas 3 espécies foram registradas apenas na primeira região e somente 2 na segunda região. As lagoas apresentaram os maiores valores de riqueza, provavelmente em razão da grande estabilidade, menor velocidade de corrente e presença de extensos bancos de macrófitas aquáticas. A presença de vegetação marginal permite grande diversificação de habitats, contribuindo para a ocorrência de um número expressivo de espécies na região litorânea. Esse fato contribuiu para a ocorrência de espécies não planctônicas no zooplâncton.Palavras-chave: rotífero, planície de inundação, riqueza, novas ocorrências, rio Paraná.

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“…appears to be a warm-water New World species, being recorded from French Guyana but also from Brazil and North Carolina, USA. Other non-illustrated records of L. unguitata from Brazil (Mato Grosso: Turner and Da Silva, 1992) and Trinidad (Collado et al, 1984) may also concern this taxon, considering that L. unguitata is, in fact, an Old World species (Segers 1995(Segers , 1996.…”

Section: Ecology and Distributionmentioning

confidence: 96%

“…Moreover, several taxonomically problematic cases exist which could not be resolved due to the paucity of records and the unavailability of study specimens. One of such was on the identity and status of an American taxon, resembling the Old World tropical species L. unguitata (Fadeew, 1925): several records of the latter from North and South America and the Caribbean exist (Ahlstrom, 1938;Collado et al, 1982;Turner and Da Silva, 1992), but these records are either unillustrated, hence unconfirmable, or accompanied by a drawing depicting a different taxon. A second problematic case was on the identity of the Brazilian taxon 'L.…”

Section: Introductionmentioning

confidence: 97%