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Registros recuperados: 10
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A new recent marine Ostracoda species (Hemicytheridae) from Brazil Iheringia, Sér. Zool.
Coimbra,João Carlos; Bergue,Cristianini Trescastro.
Ostracods were collected on Sargassum sp. from the littoral of São Sebastião, São Paulo State, southeastern Brazil. A new species, Aurila ornellasae, is illustrated and described based on a population with various instars and adult specimens. This is the first living species of this genus described from Brazil. A brief discussion on the systematics of the genus Aurila Pokorný, 1955 and its allied genera is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemicytherinae; Aurila; Sargassum; São Paulo; Littoral.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000300003
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Crescimento e reprodução de Hyale media Dana (Amphipoda, Gammaridae, Hyalidae) associada à Sargassum cymosum C. Agardh Zoologia
Leite,Fosca Pedini Pereira.
The post-marsupial growth, sexual differentiation, fecundity and reproductive biology of Hyale media Dana, 1853 living on Sargassum cymosum C. Agardh, 1820 are described. The growth was continuous througth 12 stages for males and 9 for females. The sexual differentiation occours at 2th or 3th moult and was demonstrated by the enlargment of the gnatopod II propod. Number of eggs increased with the female head length. Observations of courtship behavior, incubation, moult processes, emergence of juveniles and brood caracteristics were made. The precopula courtship continued for two days, the eggs were incubated for six days and the juveniles, that stay until three days in the marsupium, moult every day.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amphipods; Reproduction; Growth; Fecundity; Sargassum.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300008
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Diel density variation of amphipods associated with Sargassum beds from two shores of Ubatuba, Southeastern, Brazil Iheringia, Sér. Zool.
Leite,Fosca P. P.; Tanaka,Marcel O.; Sudatti,Daniela B.; Gebara,Raquel S..
Densities of mobile epifaunal assemblages associated with macrophytes are very variable during the day and the activity of visually-oriented predators is thought to have an important influence on this pattern. Here we compared densities of amphipods associated with a common brown alga, Sargassum stenophyllum (Phaeophyceae), at sites contrasting in water turbidity. We expected that diel variation of amphipods would occur in a shore with clear waters (Perequê), whereas no variation was expected in a shore with turbid waters (Lamberto). Amphipod density varied during the day at both shores, with no indication of a larger variation at Perequê. Most species showed two density peaks, one at night and the other in the afternoon. These peaks occurred close the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diel variation; Amphipods; Sargassum.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000400007
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Distribuição vertical e flutuação sazonal da macrofauna vágil associada a Sargassum cymosum C. Agardh, na praia do Lázaro, Ubatuba, São Paulo, Brasil Zoologia
Jacobucci,Giuliano Buzá; Leite,Fosca Pedini Pereira.
Seasonal fluctuations and depth distribution of the vagile macrofauna associated with Sargassum cymosum at Lazaro beach, Ubatuba, São Paulo State, were evaluated through density comparison of higher taxonomic groups among three depth intervals in four periods of the year. Ten groups were identified and among them gammarid and caprellid amphipods were numerically dominant in all sampling periods and did not show any consistent zonation trend. Gastropods, polychaetes and ophiuroids ocurred in lower densities and tended to dominate as depth increased, Wet weight algae variation did not explain the observed spatial and temporal patterns. Biotic interactions, recruitment and environmental parameters are probably involved in seasonal density variation of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Depth distribution; Seasonal fluctuations; Macrofauna; Sargassum; Phytal; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500004
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Levantamento de Mollusca, Crustacea e Echinodermata associados a Sargassum spp. na Ilha da Queimada Pequena, Estação Ecológica dos Tupiniquins, litoral sul do Estado de São Paulo, Brasil Biota Neotropica
Jacobucci,Giuliano Buzá; Güth,Arthur Ziggiatti; Turra,Alexander; Magalhães,Cláudia Alves de; Denadai,Márcia Regina; Chaves,André Murtinho Ribeiro; Souza,Estevão Carino Fernandes de.
Neste trabalho foi realizado o primeiro levantamento da macrofauna de fital da ilha da Queimada Pequena, focalizando o registro das espécies de moluscos, crustáceos e equinodermos associados a Sargassum spp. Para a amostragem da macrofauna associada, foram coletadas aleatoriamente 6 frondes de Sargassum localizadas a 6 m de profundidade, usando-se equipamento de mergulho autônomo. As frondes foram envolvidas em sacos de tecido com malha de 200 mm, mraspadas do substrato, colocadas em recipientes com uma solução de formaldeído 10% e levadas ao laboratório para remoção e identificação da fauna. Quarenta e um táxons foram identificados, havendo dominância de crustáceos peracáridos. Em relação aos Mollusca, a composição específica foi diferente em relação...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fital; Macrofauna; Sargassum; Levantamento marinho; Queimada Pequena.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000200023
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Life Cycle Observations on Amphilocus neapolitanus (Della Valle, 1853) (Crustacea, Amphipoda) Associated with Sargassum cymosum C. Agardh, 1820 in Ubatuba, (SP), Brazil BABT
Leite,Fosca Pedini Pereira.
Day and night densities, reproductive biology and life cycle of Amphilocus neapolitanus (Della Valle, 1853), associated with Sargassum cymosum C. Agardh, 1820, were studied during 13 months. The density of juveniles, males and females was higher in night samples than in day samples. Sex ratio was strongly favorable toward the females. Ovigerous females were present in similar densities in both the periods while the non-ovigerous females were predominant at night. The egg number was not correlated with the size of the females. Breeding occurred throughout the year.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Population structure; Reproductive biology; Life cycle; Amphipoda; Sargassum.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300014
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MASSIVE QUANTITIES OF PELAGIC Sargassum ON THE SHORES OF SAN ANDRES ISLAND, SOUTHWESTERN CARIBBEAN Acta biol.Colomb.
GAVIO,Brigitte; RINCÓN-DÍAZ,M. Natalia; SANTOS-MARTÍNEZ,Adriana.
We report an unusual biomass of floating Sargassum, composed of the species S. fluitans and S. natans, that reached the northeastern coast of San Andres island in September 2014. The time and size of the event is unprecedented to the island.
Tipo: Journal article Palavras-chave: Drifting algae; Sargassum; San Andres island; Unusual biomass.
Ano: 2015 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100027
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Padrões estruturais quantitativos de bancos de Sargassum (Phaeophyta, Fucales) do litoral dos estados do Rio de Janeiro e São Paulo, Brasil Rev. Bras. Bot.
SZÉCHY,MARIA TERESA M. DE; PAULA,ÉDISON J. DE.
Este trabalho objetivou descrever a estrututura biológica de bancos de Sargassum do litoral dos estados do Rio de Janeiro e São Paulo. Comunidades de 16 costões rochosos foram amostradas aleatoriamente (quadrados de 50 cm de lado) durante 1991-92. Essas comunidades, que apresentavam populações de Sargassum de sete diferentes táxons infragenéricos, eram submetidas a diferentes graus de exposição às ondas e à emersão. A massa seca de Sargassum variou de 37 g.m-2 a 587 g.m-2; os maiores valores foram encontrados em locais moderados e protegidos. A análise de agrupamento dessas comunidades, considerando a massa seca de 75 grupos de macroalgas e macroinvertebrados, indicou três padrões estruturais caracterizados pelo grupo de organismos mais abundantes: 1)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sargassum; Corallinaceae; Dry mass; Structural patterns.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200002
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Quantitative variables applied to phenological studies of Sargassum vulgare C. Agardh (Phaeophyceae - Fucales) from Ilha Grande Bay, State of Rio de Janeiro Rev. Bras. Bot.
Széchy,Maria Teresa M. de; Galliez,Maron; Marconi,Márcia I..
The suitability of quantitative variables for phenological studies was evaluated in a population of the brown seaweed Sargassum vulgare from "Praia das Gordas", Angra dos Reis, Ilha Grande Bay, state of Rio de Janeiro. From June 1998 to May 1999, twenty adult individuals were randomly sampled at bimonthly intervals. Fifteen variables related to the vegetative and reproductive development of perennial and non-perennial parts of the individuals were quantified. Variables related to the non-perennial parts were more useful than those related to the perennial parts, because they showed a clear variation over the year. Vegetative development declined from June to October, and increased from October to February, when maximum median values of thallus height,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Methodology; Reproduction; Sargassum; Temporal variation; Vegetative development.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000100004
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Temporal variation in Sargassum Biomass, Hypnea epiphytism and associated fauna BABT
Leite,Fosca Pedini Pereira; Turra,Alexander.
Studies were carried out to investigate the temporal variation in Sargassum biomass, Hypnea epiphytism and associated fauna. There was a marked variation in the biomass of Sargassum and Hypnea among various sampling periods. Low values for Sargassum were recorded in August and November, while the lower value for Hypnea biomass was recorded in August. An inverse relationship was found between Sargassum biomass and the intensity of Hypnea epiphytism. The density of the total fauna associated to Sargassum showed a marked reduction in May. This variation was influenced by the variation patterns of the dominant faunistic groups (Gastropoda, Gammaridea, Isopoda and Caridea). Significant positive relationships were found between the biomass of Sargassum and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sargassum; Hypnea; Epiphytism; Phytal; Associated fauna.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400021
Registros recuperados: 10
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