Data/hora: 05/06/2024 18:23:40

Provedor de dados: 	76	
País: 	Brazil	
Título: 	Synchaeta jollyae (Shiel &amp;amp; Koste) (Rotifera, Synchaetidae): an overlooked species or a newcomer in Neotropical freshwaters?	
Autores: 	Negreiros,Natalia F.; Santos,Renata M. dos; Oliveira,Laira Lúcia Damasceno de; Santos-Wisniewski,Maria J. dos; Rocha,Odete.	
Data: 	2012-06-01	
Ano: 	2012	
Palavras-chave: 	Zooplankton; Rotifers; Furnas Reservoir; Tietê River.	
Resumo: 	Populations of Synchaeta jollyae (Shiel &amp;amp; Koste, 1993) (Rotifera), a species recently recorded for the first time in Brazil and South America, were analyzed in reservoirs in Southeast Brazil. Sampling was carried out monthly from August 2006 to July 2007 at Furnas Reservoir in the Rio Grande basin, state of Minas Gerais, and in four cascade reservoirs in the Tietê River basin (Barra Bonita, Bariri, Ibitinga and Nova Avanhandava) state of São Paulo, in June and September 2008 and in January and May 2009. Synchaeta jollyae occurred in most samples and periods. From the results obtained it is evident that S. jollyae occurs in water bodies of varied trophic status but reaches larger populations in eutrophic water bodies and during lower temperature periods. The greatest densities of S. jollyae were found in the eutrophic Bariri Reservoir, on the Tietê River, during the winter. Mann-Whitney test confirmed the significant difference between the population densities in periods of high and low temperatures, with populations reaching higher densities at lower temperatures. It is not yet possible to tell whether S. jollyae is a widely distributed species that has been overlooked in previous plankton studies in South America. Wherever these populations of S. jollyae might have originated, it appears to be a species well established and adapted to a wide range of conditions in the Neotropics.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000200007	
Editor: 	Museu de Ciências Naturais	
Relação: 	10.1590/S0073-47212012000200007	
Formato: 	text/html	
Fonte: 	Iheringia. Série Zoologia  v.102 n.2 2012	
Fonte: 	info:eu-repo/semantics/openAccess