II 2ª Ed 2ª Ed Biologia Marinha Biologia Marinha Biologia Marinha 4th Ed 12ª Ed .. da Conceição 3 Renato Crespo Pereira e Abílio Soares-Gomes 3 Eugene P. .. Dados e Factos III Seminário de Investigação Livro de Comunicações Ética. Valéria Laneuville Teixeirab, Renato Crespo Pereirab, Éverson Miguel Biancoc, Departamento de Biologia Marinha, Instituto de Biologia, Universidade .. RESENHA_ Livro _O Corcunda de Notre-Dame_ – Victor Hugo ~ Seis Milênios. Valéria Laneuville TeixeiraI, III; Renato Crespo Pereira. IUniversidade Federal Fluminense Instituto de Biologia, Departamento de Biologia Marinha (Outeiro.

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Services on Demand Journal. Different chemicals are known for H. Assays with hermit crabs. The electric furnace defended.

The chemical ecology of holoplankton and meroplankton. Specimens of Hymeniacidon heliophila 75 g were cut into small pieces and added to n- hexane in a graduated cylinder to measure the volume of tissue extracted ml. Despite the large literature about sponges chemical defenses in the Guam – tropical Pacific e.

Secondary metabolites of marine sponge Sarcotragus sp. This gel was then poured on a plastic screen previously placed between a glass plate and a PVC mold. In fish assays, only the medium polarity extract, obtained with extraction using ethyl acetate was effective to avoid predation by these vertebrates. Chemical profile of adults and buds of the chemically defended marine sponge Tethya maza. A review of the chemical ecology of shallow-water Antarctic marine invertebrates.

Chemical defense strategies in sponges: Crude Extracts Specimens of Hymeniacidon heliophila 75 g were cut into small pieces and added to n- hexane in a graduated cylinder to measure the volume of tissue extracted ml. Each trial set consisted of n ropes containing a pair of pellets – one control and one treatment, that were attached to the sea bottom and exposed to generalist consumers during the necessary time to obtain any measurable consumption.


Latitudinal variation in spongivorous fishes and the effectiveness of sponge chemical defenses. Sponges were frozen and lyophilized before extraction. The sesterterpene variabilin as fish feeding deterrent from Ircinia strobilina Lam.

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Apparently, the species H. Nonetheless, this work showed that marinja from H. All extracts used in experiments high, medium and low polarities were effective to inhibit the consumption by the hermit crab C. Palatability of variably defended Caribbean sponge species is unrelated to predator abundance. Each extract was separately added into an artificial food in volumetrically appropriated level based on the volume of H. Therefore, these chemicals can be a response to this elevated consumption pressure.

Due to this high similarity it is supposed that buds could be chemically protected with regards to predation as well as the adult individuals of T. Multiple ecological roles of secondary metabolites are shown in some sponges, which may represent an adaptative advantage considering the high amount of energy used to produce these chemical compounds.

Museu Nacional, Rio de Janeiro, pp. Assays with sea stars. Marine pharmacology in Although their efficiency may be noticed in many organisms, many of their effects are not well- known yet. Despite this high similarity, it is not possible to know whether buds of T. Defenses of ascidians and their conspicuous larvae: Quantitative information concerning sterols was obtained from Frd area percent data.


Cholesterol, ergost-5,dienol-3, stigmast-5,dienol-3, cholest-5,dienol-3, cholestenolone-7, and stigmast-5,24 28 -dienol were the major compounds detected, two of them being detected only in crude extracts of the adults while one was present only in the buds.

Chemical profile of adults and buds of the chemically defended marine sponge Tethya maza

In the present work, sympatric approach was applied considering L. Sterols from the marine sponge Iophon proximun. The artificial food consisted of 2. No accounting for taste: Interaction of Geodia lectin with Tethya cell-surface glycoprotein.

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Normality was rrenato using Kolmogorov-Smirnov test. Statistical Treatment Normality was verified using Kolmogorov-Smirnov test. Prey nutritional quality and the effectiveness of chemical defenses against tropical reef fishes. The goal of this work was to investigate the defensive property of the extracts from the sponge Hymeniacidon heliophila against the tropical predators: Biologiq of Caribbean sponges against predatory reef fish.

Synthesis and evaluation of diverse thio avarol derivatives as potential UVB photoprotective candidates. As a consequence, effects of secondary metabolites appear to be determined by the specific effects of each compound on each species of consumer.

Considering our results, we can conclude that H.