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Registros recuperados: 5
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Freshwater sponges (Porifera, Demospongiae) indicators of some coastal habitats in South America: redescriptions and key to identification Iheringia, Sér. Zool.
Volkmer-Ribeiro,Cecilia; Machado,Vanessa de Souza.
Surveys for freshwater sponges were performed at several water bodies at sandy environments along a north-south direction of particularly the Brazilian coastal line. The results allowed for the distinction of four different species-specific environments along this coastal border. The main fact considered was the dominant or the sole recurrent occurrence of a single sponge species at one particular habitat. The first one is that of the lagoonal mesohaline habitats at the tropical and subtropical realms, indicated by Spongilla alba Carter, 1849. The second one refers to shallow ponds among dunes at the tropical area indicated by Corvoheteromeyenia heterosclera (Ezcurra de Drago, 1974). The third one is that of also shallow ponds close to the dune belt at the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater sponges; Indicator species; Sandy coastal environments; Paleo-reconstructions; South America.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000200005
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Hatchability of gemmules of two Neotropical freshwater sponges (Porifera: Spongillida) Iheringia, Sér. Zool.
Calheira,Ludimila; Santos,Paulo J. P.; Pinheiro,Ulisses.
ABSTRACT Inland waters experience extreme environmental conditions determining the evolution of several adaptive strategies of the fauna to these variable conditions. Freshwater sponges produce resisting bodies called gemmules that contain totipotent cells and specialized spicules (gemmuloscleres). Completely formed gemmules exhibit low metabolic rates and may become dormant during periods of environmental stress. Until now, few species had their hatchability tested against different environmental conditions. The purpose of the present study was to test the capacity of hatching gemmules of two freshwater sponge species (Heteromeyenia cristalina Batista, Volkmer-Ribeiro & Melão, 2007 and Radiospongilla inesi Nicacio & Pinheiro, 2011) from inland...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dormancy; Freshwater sponges; Hatching; Spongillidae.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100201
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Induction of cell migration and activation in mice by the freshwater sponge Drulia uruguayensis Bonetto & Ezcurra de Drago, 1968 (Porifera: Metaniidae) J. Venom. Anim. Toxins incl. Trop. Dis.
Magalhães,AO; Volkmer-Ribeiro,C; Fujimoto,LBM; Barbosa,MF; Cardoso,JL; Barcellos,JFM; Silva,CC; Campos,RR; Cunha,MCF; Freitas-Lemos,AP; Dos-Santos,MC.
Freshwater sponges are abundant in the Amazon region and they have been known to cause dermatitis (acute inflammation) since the beginning of the 20th century. To determine whether additional constituents, besides their body spicules, cause dermatological reactions in humans, an experimental study was developed and carried out using mice and Drulia uruguayensis prepared in three different forms: intact sponges (IS), macerated sponges (MS) or isolated spicules - megascleres (ISM). The cells most commonly involved in inflammatory reactions (mast cells, eosinophils and neutrophils), as well as intraepithelial lymphocytes and degranulated mast cells, were counted so that they could be used as parameters to determine which of the sponge preparations induced the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dermatitis; Amazonia; Cauixi; Freshwater sponges.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000100009
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Species of Oukuriella Epler (Diptera, Chironomidae) inside freshwater sponges in Brazil Rev. Bras. entomol.
Roque,Fabio de Oliveira; Trivinho-Strixino,Susana; Couceiro,Sheyla Regina Marques; Hamada,Neusa; Volkmer-Ribeiro,Cecília; Messias,Maria Conceição.
Larvae of Oukuriella Epler, 1986 (Diptera, Chironomidae) inside freshwater sponges are reported for the first time in Brazil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oukuriella; Chironomidae; Diptera; Freshwater sponges; Porifera.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000200020
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Primeiro registro de Corvoheteromeyenia australis (Bonetto & Ezcurra de Drago) para o Brasil com chave taxonômica para os poríferos do Parque Estadual Delta do Jacuí, Rio Grande do Sul, Brasil Zoologia
Tavares,Maria da Conceição Marques; Volkmer-Ribeiro,Cecília; De Rosa-Barbosa,Rosária.
A taxonomic key is provided for the assembly of sponges of the floating meadows, in a protected deltaic area at southern Brazil. The roots of the water hyacinths Eichhornia azurea (Sw). Kunth and Eichhornia crassipes (Mart.) Solms-Laubach were seen to be the prefered substrates. The register of C. australis (Bonetto & Ezcurra de Drago, 1966) is the first for Brazil enhancing a discussion of the genus.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater sponges; Floating meadows; Protected delta region; Southern Brazil.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200001
Registros recuperados: 5
Primeira ... 1 ... Última
 

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