Brazilian Journal of Oceanography最新文献

{"title":"Blooms of bryozoans and epibenthic diatoms in an urbanized sandy Beach (Balneário Camboriú - SC - Brazil): dynamics, possible causes and biomass characterization","authors":"L. Rörig, Maevi Ottonelli, Ana Gabriela Itokazu, M. Maraschin, João Vitor Heberle Lins, P. Abreu, Maria Tereza Rojo de Almeida, F. Ramlov, M. G. D’Oca, L. Ramalho, F. Diehl, Paulo Antunes Horta Júnior, J. P. Filho","doi":"10.1590/S1679-87592017116106504","DOIUrl":"https://doi.org/10.1590/S1679-87592017116106504","url":null,"abstract":"Balneario Camboriu (SC - Brasil) e uma cidade turistica, onde o crescimento desordenado da populacao urbana e a implementacao de obras costeiras sem uma avaliacao adequada tem gerado impactos ambientais e afetado severamenteou a qualidade sanitaria da agua e do sedimento do rio Camboriu e da area marinha adjacente. Um dos fenomenos mais recentes e alarmantes observados sao as floracoes de briozoarios invasivos (Arboscuspis bellula e Membraniporopsis tubigera) associados com as diatomaceas epibenticas (Amphitetras antediluviana e Biddulphia biddulphiana). Varios indicios associam esses fenomenos, iniciados em 2003, com o excesso de nutrientes e materia orgânica na enseada Camboriu e com grandes obras costeiras locais, como dragagem, aterro e construcao de molhes, levando a mudancas na estrutura ecologica bentica. Sendo um problema de estetico e ambiental, a preocupacao da comunidade e orgaos governamentais gerou uma intensificacao nos estudos, uma vez que as ocorrencias se tornaram mais frequentes e persistentes. O presente trabalho aborda este problema atraves de estudos ambientais e experimentais. A coleta de material bentico com embarcacao e mergulhos e monitoramento floracoes junto a praia compuseram a abordagem ambiental. Os trabalhos de laboratorio incluiram o isolamento e a cultura de algas e brioozarios, bem como a avalicao do crescimento desses organismos, alem da analise e avaliacao quimica biomassa. Os dados de monitoramento mostraram uma tendencia sazonal nas floracoes, com eventos mais evidentes nos meses mais quentes. Diatomaceas aumentaram em abundância nos meses mais frios e briozoarios nos mais quentes. A diatomacea A. antediluviana, predominante nas floracoes, cresceu de forma satisfatoria em cultivo laboratorial, mostrando um melhor crescimento em meios com concentracoes mais elevadas de silicato e fosfato. Os briozoarios mostraram crescimento lento em condicoes de laboratorio. O material depositado no ambiente mostrou baixas concentracoes de acidos graxos, predominantemente saturados, mas a elevada biomassa sugere um possivel uso para a producao de biocombustiveis. Amostras de biomassa dominadas por briozoarios apresentaram atividade antimicrobiana moderada contra Klebsiella pneumoniae. A explicacao para a ocorrencia destes eventos ainda sao inconclusivas, mas ha evidencias consideraveis de que ha um efeito sinergico entre a alta concentracao de bacterias e detritos orgânicos na agua, relacionada com a poluicao local, e a eliminacao de competidores naturais pelos impactos das obras costeiras.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"678-694"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017116106504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48636818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variation in the body growth parameters of the ghost crab Ocypode quadrata from morphodynamically distinct sandy beaches","authors":"Maíra Pombo, A. Turra","doi":"10.1590/S1679-87592017114606504","DOIUrl":"https://doi.org/10.1590/S1679-87592017114606504","url":null,"abstract":"Os padroes de distribuicao da macrofauna de praias arenosas tem sido amplamente investigados, mostrando que o entre-mares de praias dissipativas tende a concentrar maiores valores de riqueza e biomassa, bem como individuos de maior sucesso reprodutivo e tamanho, do que praias reflexivas. Para crustaceos do supralitoral essa tendencia e em geral oposta. Para o guaruca, Ocypode quadrata, frequentemente o grupo mais conspicuo desses ambientes, sao raras as investigacoes de dinâmica populacional e respostas a diferentes morfologias praiais. Aqui, a variacao de tamanho e o crescimento corporeo foram avaliados ao longo de um ano atraves do metodo indireto em tres praias com reduzido impacto antropico no Litoral Norte de Sao Paulo. Estas foram escolhidas de froma a representarem tres tipos basicos de morfodinâmica: dissipativa (Costa), intermediaria (Felix) e reflectiva (Puruba). Em cada praia, cinco transectos de 2m de largura foram aleatorizados mensalmente, e avaliados da primeira a ultima ocorrencia de tocas. O ajuste do modelo de crescimento de von Bertalanffy foi comparada entre as areas. Para as tres praias uma moda principal, devido a entrada de juvenis (mm), foi identificada em agosto/setembro. Esses individuos atingiram no verao seguinte um tamanho correspondente a moda principal do verao anterior, e dentro daquela que foi dominante no periodo como um todo. Especificamente, os parâmetros de crescimento foram: Costa (dissipativa) L∞ = 46,36 milimetros, K = 0,90 ano-1 e t0 = -0,19; Felix (intermediaria) L∞ = 57,95 milimetros, K = 0,87 ano-1 e t0 = -0,12; Puruba (reflexiva) L∞ = 53,01 milimetros, K = 1,11 ano-1 e t0 = -0,07. Esses ajustes foram iguais estatisticamente entre Puruba e Felix, sendo ambos distintos da praia do Costa. Os indices de crescimento, phi-prima, variaram de 3,29 (Costa) a 3,49 (Puruba), enquanto na praia Felix esse valor foi 3,46, indicando homogeneidade deste parâmetro entre as praias, mas reforcando a maior semelhanca a praia intermediaria e reflexiva.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"656-665"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48495506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal variation of nutrients and hydrological conditions in the State Marine Park of Laje de Santos (SMPLS) and adjacent continental shelf areas (South Atlantic Ocean - Brazil)","authors":"E. Braga, V. G. Chiozzini, Chiara Machado Vieira","doi":"10.1590/S1679-87592017136806504","DOIUrl":"https://doi.org/10.1590/S1679-87592017136806504","url":null,"abstract":"Parques marinhos constituem areas importantes para a conservacao da vida marinha e do patrimonio genetico em todo o mundo. A criacao de tais parques deve ser acompanhada de medidas cuidadosas para garantir a coexistencia de biota natural e de atividades humanas nestes sistemas. O Parque Estadual Marinho da Laje de Santos (PEMLS) situa-se proximo de um polo industrial e uma area urbana, e sua criacao e manutencao e um exemplo para a humanidade. No entanto, nenhum programa ainda nao foi instalado para o acompanhamento dos parâmetros bioticos e abioticos da agua. Assim, este estudo tem como objetivo fornecer parâmetros hidrologicos e hidroquimicos, com enfase em nutrientes dissolvidos, para estabelecer um ponto de partida para o monitoramento dessas aguas. A presenca da Agua Central do Antlântico Sul (ACAS) no parque marinho durante os periodos de amostragem de primavera e verao foi evidenciada pela observacao de baixas temperaturas ( ; 7,00 µmol L-1), enquanto as concentracoes de N-amoniacal (< 9,86 µmol L-1) demonstraram a regeneracao rapida da materia orgânica, principalmente na zona eufotica. A analise dos dados de periodos de verao revelou uma diferenca anual, mostrando janeiro de 2014 mais seco do que janeiro de 2015, o que influenciou a disponibilidade de alguns nutrientes e os padroes de distribuicao de parâmetros hidroquimicos nesta regiao. Os resultados observados quanto aos parâmetros hidroquimicos no parque marinho confirmam as condicoes preservadas da agua do mar ao redor da Laje de Santos, caracterizada pela excelente qualidade da agua, concluindo-se haver a necessidade de implantacao de acoes com base nesses dados de referencia para o acompanhamento e a preservacao desta importante reserva da vida marinha.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"628-643"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017136806504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48797654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cetaceans using the marine protected area of \"Parque Estadual Marinho da Laje de Santos\", Southeastern Brazil","authors":"M. C. Santos, Giovanna Corrêa e Figueiredo, M. V. Bressem","doi":"10.1590/S1679-87592017130606504","DOIUrl":"https://doi.org/10.1590/S1679-87592017130606504","url":null,"abstract":"The aim of this study was to evaluate the presence of cetaceans in the waters surrounding the Marine Protected Area (MPA) known as “Parque Estadual Marinho da Laje de Santos (PEMLS)”, placed in coastal waters at the southeastern coast of Brazil. Boat-based surveys were conducted once a month from June 2013 to June 2015. A specific transect was followed to cover the area of the quoted MPA, as well as its borders. A total of 24 boat-surveys rendered 18 sightings of cetacean groups of the following species: Atlantic spotted dolphin (Stenella frontalis) (12), rough-toothed dolphin (Steno bredanensis) (2), common dolphin (Delphinus delphis) (1), Bryde’s whale (Balaenoptera edeni) (2) and common minke whale (Balaenoptera acutorostrata) (1). Sightings of S. frontalis, the commonest sighted species, was positively correlated with water depth (Mantel test; r = 0.8072; p < 0.05). Photoidentified individuals moved back and forth to inner and outer areas of the MPA, remaining in the area throughout the 2-year survey. “Paisley” cutaneous marks of unknown origin were reported in two common dolphins for the first time in local waters. As the PEMLS has been used as an important spot for SCUBA divers, it is recommended that cetacean sightings could still be gathered in a future partnership, as well as using the acoustics tool to detect their presence when researchers are not in the field.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"605-613"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017130606504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42922749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plankton in waters adjacent to the Laje de Santos state marine conservation park, Brazil: spatio-temporal distribution surveys","authors":"M. Bueno, S. Alberto, Renan Carvalho, T. M. Costa, Á. Ciotti, R. Christofoletti","doi":"10.1590/S1679-87592017129006504","DOIUrl":"https://doi.org/10.1590/S1679-87592017129006504","url":null,"abstract":"The coastal marine plankton plays a major role in ecosystem functioning by linking pelagic and benthonic environments through energy fluxes. Understanding the dynamic of planktonic organisms is also crucial for conservation and management purposes. Plankton was sampled at ten sites in the waters of the PEMLS and the adjacent area, on four different occasions through 2013 and 2015 in order to identify key planktonic groups and protocols for long-term monitoring. Ninety taxa of zooplanktonic organisms were found with holoplanktonic copepods and cladocerans dominating samples. Zooplankton biomass, mortality and taxonomic composition varied both in space and time. Surface chlorophyll-a concentrations varied spatio-temporally. A protocol for monitoring the plankton of the waters in and adjacent to the PEMLS is suggested based on biomass and mortality of zooplankton and biomass of phytoplankton using periodically in situ calibrated ocean color satellite imagery.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"564-575"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017129006504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48723336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Currents on the continental shelf adjacent to the Laje de Santos (SP, Brazil)","authors":"Roberto Fioravanti Carelli Fontes, B. Castro","doi":"10.1590/S1679-87592017130206504","DOIUrl":"https://doi.org/10.1590/S1679-87592017130206504","url":null,"abstract":"Analysis of current meter data permitted the elaboration of a description of the hydrodynamic characteristics of the continental shelf adjacent to Laje de Santos, a rocky islet located in the inner part of the Sao Paulo Continental Shelf (SPCS). The currents in the region are mainly driven by the synoptic winds, presenting bidirectional motions approximately parallel to the local isobaths at all levels, depending on the wind direction but with the predominance of those that leave the isobaths to the left. The tidal currents in this sector of the SPCS are more energetic in the direction perpendicular to the isobaths in comparison with the along isobath component and have the predominance of the semidiurnal oscillations.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"595-604"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017130206504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45652792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of artificial tides in Ucides cordatus innate immune system","authors":"G. Costa, Ariane Teixeira Bertoldi, Douglas de Sousa Costa, V. Pimentel, J. Barbirato, L. B. Dobbss, C. D. F. Marinho, C. Tadokoro","doi":"10.1590/S1679-87592017131606503","DOIUrl":"https://doi.org/10.1590/S1679-87592017131606503","url":null,"abstract":"","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"509-514"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41551118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atlas of marine bony fish otoliths of Southeastern-Southern Brazil Part VIII: Siluriformes (Ariidae) and Pleuronectiformes (Achiridae, Paralichthyidae, Cynoglossidae)","authors":"Cesar Santificetur, Marcella Bockis Giaretta, V. R. M. Conversani, Marina Rito Brenha-Nunes, C. Siliprandi, C. Rossi-Wongtschowski","doi":"10.1590/S1679-87592017143106503","DOIUrl":"https://doi.org/10.1590/S1679-87592017143106503","url":null,"abstract":"To complement the series of manuscripts published as \"Atlas of Teleostei Otoliths of the Southeastern-Southern Brazil\", in this volume we present results for species of Siluriformes (two species) and Pleuronectiformes (thirteen species) orders. Considering that the sagittae of Siluriformes are very small we analyzed the left lapillus. Due to the asymmetry of the Pleuronectiformes otoliths, were analysed both left and right structures, being the circumsulcal depression the most important feature to diagnose these species.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"448-494"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017143106503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49592930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prostate cancer immunotherapy, particularly in combination with androgen deprivation or radiation treatment. Customized pharmacogenomic approaches to overcome immunotherapy cancer resistance.","authors":"C Alberti","doi":"10.11138/gchir/2016.37.5.225","DOIUrl":"10.11138/gchir/2016.37.5.225","url":null,"abstract":"<p><p>Conventional therapeutic approaches for advanced prostate cancer - such as androgen deprivation, chemotherapy, radiation - come up often against lack of effectiveness because of possible arising of correlative cancer cell resistance and/or inadequate anti-tumor immune conditions. Whence the timeliness of resorting to immune-based treatment strategies including either therapeutic vaccination-based active immunotherapy or anti-tumor monoclonal antibody-mediated passive immunotherapy. Particularly attractive, as for research studies and clinical applications, results to be the cytotoxic T-lymphocyte check point blockade by the use of anti-CTLA-4 and PD-1 monoclonal antibodies, particularly when combined with androgen deprivation therapy or radiation. Unlike afore said immune check point inhibitors, both cell-based (by the use of prostate specific antigen carriers autologous dendritic cells or even whole cancer cells) and recombinant viral vector vaccines are able to induce immune-mediated focused killing of specific antigen-presenting prostate cancer cells. Such vaccines, either used alone or concurrently/sequentially combined with above-mentioned conventional therapies, led to generally reach, in the field of various clinical trials, reasonable results particularly as regards the patient's overall survival. Adoptive trasferred T-cells, as adoptive T-cell passive immunotherapy, and monoclonal antibodies against specific antigen-endowed prostate cancer cells can improve immune micro-environmental conditions. On the basis of a preliminary survey about various immunotherapy strategies, are here also outlined their effects when combined with androgen deprivation therapy or radiation. What's more, as regard the immune-based treatment effectiveness, it has to be pointed out that suitable personalized epigenetic/gene profile-achieved pharmacogenomic approaches to target identified gene aberrations, may lead to overcome - as well as for conventional therapies - possible prostate cancer resistance to immunotherapy.</p>","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"29 1","pages":"225-235"},"PeriodicalIF":0.6,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5256907/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89428458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of phagotrophy in natural assemblages of the benthic dinoflagellates Ostreopsis, Prorocentrum and Coolia","authors":"E. Almada, W. F. Carvalho, S. Nascimento","doi":"10.1590/S1679-87592017140706503","DOIUrl":"https://doi.org/10.1590/S1679-87592017140706503","url":null,"abstract":"Mixotrophy has been shown to be a common trait among dinoflagellates and its importance in the nutritional ecology of harmful algae has been hypothesized. Benthic harmful species have not been extensively investigated as their planktonic counterparts and there are major gaps in the knowledge of their nutritional strategies. In this study the occurrence of phagotrophy was investigated in natural assemblages of benthic dinoflagellates using epi-fluorescence microscopy with DAPI and LysoSensor staining. The study was conducted at five sites along the coast of Rio de Janeiro that were visited in January, August and December 2010. In total, 1659 dinoflagellate cells were observed. From these, only 0.4% of 1195 Ostreopsis cf. ovata and 2.2% of 134 Coolia spp. cells presented evidence of phagotrophy with vacuoles stained by LysoSensor or a DAPI (4',6-diamidino-2-phenylindole) stained inclusion. Stained vacuoles were not registered in the 330 Prorocentrum spp. cells observed. Few O. cf. ovata cells contained round red inclusions (\"red spots\") that were not stained either by DAPI or LysoSensor, suggesting that these structures are not ingested prey. The results showed that phagotrophy was not a frequent nutritional strategy in benthic dinoflagellates during the study period.","PeriodicalId":55325,"journal":{"name":"Brazilian Journal of Oceanography","volume":"65 1","pages":"392-399"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S1679-87592017140706503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43888861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}