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Biologia populacional das espécies de Ampithoidae (Crustacea, Amphipoda) associadas a Sargassum filipendula (Phaeophyta, Fucales) na Praia da Fortaleza, Ubatuba, São Paulo, Brasil Zoologia
Jacobucci,Giuliano B.; Leite,Fosca P. P..
A biologia populacional de três espécies de anfípodes da família Ampithoidae (Ampithoe ramondi, Cymadusa filosa e Sunampithoe pelagica) associadas a Sargassum filipendula da Praia da Fortaleza, litoral norte do Estado de São Paulo foi estudada entre junho de 2000 e maio de 2001. Os anfípodes foram identificados, contados e separados em classes de tamanho através de um conjunto de peneiras agrupadas. Foram obtidos histogramas mensais de jovens, machos e fêmeas. A razão sexual dos ampitoídeos foi avaliada mensalmente. A biologia reprodutiva das espécies foi avaliada através freqüência relativa mensal de fêmeas ovígeras, de sua fecundidade, volume médio dos ovos e correlação do tamanho da cabeça com o número de ovos contidos em seus marsúpios. Ampithoe...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anfípodes; Dinâmica populacional; Fital; Macrofauna.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400031
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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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Hermit crab (Decapoda, Anomura) attraction to dead gastropod baits in an infralittoral algae bank BABT
Pezzuti,Juarez C. B.; Turra,Alexander; Leite,Fosca P. P..
Hermit crabs use gastropod shells as shelter and are adapted to follow chemical cues released from tissues of dead or injured gastropods as a way to find new and more adequate shells. The species composition, crab size, shell types adequacy and physical condition were compared between attracted individuals and crabs collected in previous samples. The previous sampling was carried out in five areas before each experiment. Then, five baits of crushed gastropods in nylon net bags were installed in these areas. Three samples were taken at 30min intervals, capturing all crabs within a circle of 60cm diameter. Attraction of hermit crabs was tested for four different gastropod baits to verify specificity of the chemical cues. Clibanarius antillensis, Pagurus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hermit crab; Chemical attraction; Gastropod predation sites; Shell use; Shell condition.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200018
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Temporal variation of epi- and endofaunal assemblages associated with the red sponge Tedania ignis on a rocky shore (São Sebastião Channel), SE Brazil Iheringia, Sér. Zool.
Leite,Fosca P. P.; Pavani,Lilian; Tanaka,Marcel O..
ABSTRACT Sponges are biogenic substrates that increase the available space on rocky shores and provide shelter for many groups of the benthic fauna, which can live both inside and on these sessile invertebrates. In order to assess the differences in temporal variation of endobiont and epibiont groups, samples of the red sponge Tedania ignis (Duchassaing & Michelotti, 1864) were obtained each month for one year. The density, richness and diversity of endobiont and epibiont groups were analyzed in relation to abiotic factors. The dry mass of the sponge was negatively correlated with the density of individuals in both groups and positively with the diversity of endobionts, while organic matter was positively correlated with the diversity of epibionts....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biogenic substrate; Associated fauna; Diversity indicators; Temporal variation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100207
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