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| Registros recuperados: 10 | |
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| 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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| Amaral,Antonia Cecília Zacagnini; Migotto,Alvaro Esteves; Turra,Alexander; Schaeffer-Novelli,Yara. |
| Inserida em uma das mais belas e turísticas regiões litorâneas do país - o Litoral Norte do Estado de São Paulo -, a Baía do Araçá (São Sebastião, SP), além de conter remanescentes de manguezal e de abrigar alta diversidade biológica, é também um verdadeiro laboratório a céu aberto e um importante reduto de catadores de moluscos e pescadores artesanais. Com o objetivo de compilar preliminarmente a biodiversidade da baía, este estudo reúne a extensa bibliografia dedicada à região e apresenta a lista das espécies da fauna e da flora formalmente reportadas para o local. O texto sumaria ainda o histórico das alterações antrópicas sofridas nas últimas décadas e destaca certos representantes da fauna (espécies novas, ameaçadas de extinção, bioindicadoras e como... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flora; Fauna; Alterações; Ameaças; Conservação; Araçá. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000100022 |
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| Denadai,Márcia Regina; Bessa,Eduardo; Santos,Flávia Borges; Fernandez,Wellington Silva; Santos,Fernanda Motta da Costa; Feijó,Mônica Malagutti; Arcuri,Andreza Cristina Dias; Turra,Alexander. |
| This study evaluated the spatio-temporal distribution, reproduction and diet of the catfishes Genidens genidens, G. barbus and Aspistor luniscutis in Caraguatatuba Bay. Their sizes were recorded and the sex and reproductive stage identified. The abundance was compared between areas (South and North) and among months (August 2003 - October 2004). The species had different spatial distributions, allowing them to coexist. The temporal distribution reflected their tendencies to migrate in the reproductive period, as evidenced by the dominance of small immature individuals in the bay. G. genidens tended to reproduce in winter, and A. luniscutis in spring. The diet of G. genidens consisted of crustaceans, mollusks (shells), fish scales, ostracods, and bivalve... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spatio-temporal distribution; Diet; Genidens genidens; Genidens barbus; Aspistor luniscutis; Caraguatatuba Bay. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400008 |
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| Bernadochi,Ligia Coletti; Silvestri,Fausto; Turra,Alexander. |
| The composition and seasonal variation of brachyuran and anomuran species associated with mussel farms were evaluated at Praia da Cocanha, São Paulo between May 2007 and February 2008. Nine mussel ropes were sampled at random in each quarter, and 1,208 organisms were identified, comprising five families and 28 species. The most numerous species was the porcellanid Pachycheles laevidactylus (18.5%), followed by the xanthids Acantholobulus schmitti (16.6%), Hexapanopeus paulensis (11.3%), Panopeus americanus (10.2%), and Menippe nodifrons (8.4%). The exotic crab Charybdis hellerii was recorded throughout the study period. The ecological descriptors, except Pielou evenness index, varied significantly over the time. The highest abundance and diversity of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Associated fauna; Mussel culture; Perna perna; Crustaceans; Community ecology. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400010 |
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| 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 |
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| Turra,Alexander; Leite,Fosca Pedini Pereira. |
| The description of the embryonic development of the hermit crabs Clibanarius antillensis Stimpson, 1859, C. sclopetarius (Herbst, 1796), C. vittatus (Bosc, 1802), and Pagurus criniticornis (Dana, 1852) and preliminary observations on the development of Pagurus brevidactylus (Stimpson, 1858) and Paguristes tortugae Schmitt, 1933 were done. The analysis of the external morphology of the embryos of the studied species allowed the identification of seven stages: Stage 1, Zygote and cleavage; Stage 2, Homogeneous mass (advanced cleavage and gastrulation); Stage 3, Initiation of the germinal disc (yolk-free area); Stage 4, Percentage of yolk-free area from 5% to 50-70%; Stage 5, Eye pigmentation (comma-shape) and heart beating; Stage 6, Percentage of yolk-free... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clibanarius; Life history strategies; Pagurus; Reproduction. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000300020 |
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| Turra,Alexander. |
| The reproductive behavior of four intertidal hermit crab species [Clibanarius antillensis Stimpson, 1859, C. sclopetarius (Herbst, 1796), C. vittatus (Bosc, 1802), and Pagurus criniticornis (Dana, 1852)] was studied in São Sebastião Channel, southeastern Brazil. The overall behavior followed previous descriptions for Diogenid and Pagurid hermit crabs but some particular differences were recorded. Male to male agonistic encounters over females and guarding behavior were more common to C. sclopetarius, C. vittatus, and Pagurus criniticornis. During guarding, males clearly grasped females' chelipeds, eyestalks, and the margins of their shell apertures. This oblique guarding and, simultaneously, accessing behavior (OGAP) has never been described for hermit... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clibanarius; Pagurus; Courtship; Intersex. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000200003 |
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| Registros recuperados: 10 | |
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