scholarly journals Registro de petróleo em poríferos e cnidários durante o impacto agudo de derramamento no Nordeste brasileiro em 2019

2020 ◽  
Vol 16 (8) ◽  
Author(s):  
Walter Ramos Pinto Cerqueira ◽  
Rayssa Nascimento Batista ◽  
Valéria Oliveira dos Santos ◽  
Jeane De Lima Barbarino ◽  
Gabriel Dos Santos Quaglio ◽  
...  
Keyword(s):  
Palythoa Caribaeorum

Toneladas de petróleo atingiram centenas de localidades ao longo da costa nordestina brasileira entre agosto e dezembro de 2019. A mídia enfatizou o impacto apenas para os vertebrados de grande porte ou com apelo midiático, e algumas pesquisas acadêmicas foram feitas com foco em espécies de interesse comercial, não contemplando outras espécies que também podem ter sido afetadas, em especial os invertebrados bentônicos sésseis ou de pouca mobilidade. Este trabalho teve como objetivos conferir a existência de resquícios de óleo em uma praia urbana da cidade após a limpeza feita por voluntários e funcionários de órgãos governamentais e investigar a ocorrência de petróleo em algumas espécies de poríferos e cnidários comuns nos afloramentos rochosos do litoral de Salvador. Após a limpeza feita por voluntários e órgãos governamentais. Os exemplares coletados foram identificados e necropsiados sob lupa. Como resultado das observações de campo verificou-se que, mesmo após a limpeza, a praia continuava apresentando diversos vestígios de óleo na areia, nas rochas e também nas algas. Foram identificadas quatro espécies de Porifera (Amphimedon viridis, Cinachyrella apion, Cliona varians e Desmapsamma anchorata) e quatro de Cnidaria (Bellactis ilkaliaseae, Bunodosoma cangicum, Palythoa caribaeorum e Zoanthus sociatus), sendo encontrados vestígios de petróleo na espongiocele de D. anchorata e na faringe de B. ilkaliaseae. Tais registros ampliam o número de taxa afetados pelo impacto agudo após o evento de derramamento de óleo no Nordeste em 2019.

Detection of hemolytic bacteria from Palythoa caribaeorum (Cnidaria, Zoantharia) using a novel palytoxin-screening assay

2009 ◽  
Vol 96 (4) ◽  
pp. 405-411 ◽  
Author(s):  
Petra Seemann ◽  
Christine Gernert ◽  
Susanne Schmitt ◽  
Dietrich Mebs ◽  
Ute Hentschel
Keyword(s):  
Screening Assay ◽  
Palythoa Caribaeorum

scholarly journals Avaliação da atividade antiinflamatória e analgésica do extrato bruto hidroalcoólico do zoantídeo Palythoa caribaeorum (Duchassaing & Michelotti, 1860)

2006 ◽  
Vol 16 (4) ◽  
pp. 463-468 ◽  
Author(s):  
Carolina L.S. Soares ◽  
Carlos D. Pérez ◽  
Maria B.S. Maia ◽  
Rejane S. Silva ◽  
Liany F.A. Melo
Keyword(s):  
Palythoa Caribaeorum

scholarly journals Reproductive biology of Palythoa caribaeorum and Protopalythoa variabilis (Cnidaria, Anthozoa, Zoanthidea) from the southeastern coast of Brazil

2005 ◽  
Vol 65 (1) ◽  
pp. 29-41 ◽  
Author(s):  
H. K. Boscolo ◽  
F. L. Silveira
Keyword(s):  
Reproductive Biology ◽  
High Frequency ◽  
Sao Paulo ◽  
São Paulo ◽  
Southeastern Coast ◽  
Female Sex ◽  
Sperm Release ◽  
Palythoa Caribaeorum ◽  
Maturation Stages

The reproductive biology of Palythoa caribaeorum (Duchassaing & Michelotti 1860) and Protopalythoa variabilis (Duerden 1898) was studied through monthly samples from tagged colonies from June 1996 to June 1997, in São Sebastião channel, São Paulo, Brazil (45º26'W, 23º50'S). The gametogenesis was similar to that of other zoanthids as shown by histological preparations. Oocyte diameters and maturation stages of testis vesicles were evaluated on squash preparations. Both species showed sequential protogynic hermaphroditism, with high frequency of fertile polyps (83% in P. variabilis and 72% in P. caribaeorum), high frequency of colonies in female sex condition (65.3% of P. variabilis and 41.7% of P. caribaeorum), and apparently continuous gametogenesis. In P. caribaeorum, egg release was continuous and sperm release took place during half of the analyzed period. In P. variabilis, egg and sperm release occurred in April-May and February-March 1997, respectively.

scholarly journals Competitive interactions among zoanthids (cnidaria: zoanthidae) in an intertidal zone of northeastern Brazil

2013 ◽  
Vol 61 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Emanuelle Fontenele Rabelo ◽  
Marcelo de Oliveira Soares ◽  
Helena Matthews-Cascon
Keyword(s):  
Intertidal Zone ◽  
Northeastern Brazil ◽  
Competitive Interactions ◽  
Aggressive Interaction ◽  
Reef Environment ◽  
Palythoa Caribaeorum ◽  
The Face ◽  
Similar Growth ◽  
Sessile Organisms ◽  
Intertidal Environments

Sessile organisms that live in consolidated substrates frequently compete for space. Coral species have many strategies to face this competition, including harming their opponents or hindering their growth. In the present study, the competitive interactions between three species of zoanthids were investigated in the intertidal zone of a sandstone reef environment in northeastern Brazil. The competitive abilities of the three species were evaluated by periodic observation of the natural fringes of contact and experimental evaluation of their growth rate through removal of 100 cm² of colonies of each species. Palythoa caribaeorum and Zoanthus sociatus had similar growth rates, and both species grew faster than Protopalythoa variabilis. The recolonization strategy seems to differ among species. The contact fringes between P. caribaeorum and Z. sociatus remained unchanged over time, without any type of aggressive interaction between them, suggesting that stand-off was the strategy used by these organisms. Palythoa caribaeorum and Z. sociatus grew among the polyps of P. variabilis, often killing its colonies. The coexistence of zoanthids reveals a capacity for survival in the face of competition for limited resources such as free substrate, which led to the colonization and establishment of zoanthids in intertidal environments.

Impact of air exposure on the photobiology and biochemical profile of an aggressive intertidal competitor, the zoanthid Palythoa caribaeorum

2016 ◽  
Vol 163 (11) ◽  
Author(s):  
Inês C. Rosa ◽  
Rui J. M. Rocha ◽  
Ana Lopes ◽  
Igor C. S. Cruz ◽  
Ricardo Calado ◽  
...  
Keyword(s):  
Biochemical Profile ◽  
Air Exposure ◽  
Palythoa Caribaeorum

scholarly journals Vibrio communis sp. nov., isolated from the marine animals Mussismilia hispida, Phyllogorgia dilatata, Palythoa caribaeorum, Palythoa variabilis and Litopenaeus vannamei

2011 ◽  
Vol 61 (2) ◽  
pp. 362-368 ◽  
Author(s):  
Luciane A. Chimetto ◽  
Ilse Cleenwerck ◽  
Nelson Alves ◽  
Bruno Sergio Silva ◽  
Marcelo Brocchi ◽  
...  
Keyword(s):  
16S Rrna ◽  
Litopenaeus Vannamei ◽  
Novel Species ◽  
Pacific White Shrimp ◽  
Aflp Analysis ◽  
Rrna Gene ◽  
The Novel ◽  
Marine Animals ◽  
Palythoa Caribaeorum ◽  
Type Strains

Eight Vibrio isolates originating from the marine corals Mussismilia hispida and Phyllogorgia dilatata and the zoanthids Palythoa caribaeorum and Palythoa variabilis in Brazil and the Pacific white shrimp (Litopenaeus vannamei) in Ecuador were studied by means of a polyphasic approach. The novel isolates formed a tight monophyletic group in the genus Vibrio and were closely related to species of the Vibrio harveyi group, to which they showed more than 99 % 16S rRNA gene sequence similarity. Analysis based on concatenated sequences of the following seven genes, 16S rRNA, gyrB, recA, rpoA, topA, pyrH and mreB (5633 bp in length), showed clear separation between the isolates and species of the V. harveyi group. Amplified fragment length polymorphism (AFLP) analysis, performed previously, revealed that a representative isolate of this group, LMG 20370, was clearly separate from known Vibrio species (it belonged to the so-called AFLP cluster A31). DNA–DNA hybridization (DDH) experiments with representative isolates and type strains of the V. harveyi species group revealed high DDH between the novel isolates (more than 74 %) and less than 70 % DDH towards type strains of related Vibrio species, proving the novel species status of the isolates. Phenotypically, the novel species belongs to the arginine dihydrolase (A)-negative, lysine decarboxylase (L)-positive and ornithine decarboxylase (O)-positive (A−/L+/O+) cluster reported previously. Most species of the V. harveyi group (i.e. Vibrio rotiferianus, V. harveyi, V. parahaemolyticus and V. alginolyticus) also belong to this A−/L+/O+ cluster. However, several phenotypic features can be used for the identification of the novel species. In contrast to its closest phylogenetic neighbours, the novel species exhibits esterase (C4) and N-acetyl-β-glucosaminidase activities, but it does not produce acetoin, does not use citrate, α-ketoglutaric acid or propionic acid and does not ferment melibiose. The novel species can also be differentiated on the basis of the presence of the fatty acids C17 : 0, C17 : 1 ω8c, iso-C17 : 0 and iso-C13 : 0 and the absence of the fatty acid C18 : 0. The name Vibrio communis sp. nov. is proposed for this taxon. Strain R-40496T (=LMG 25430T =CAIM 1816T) is the type strain.

Identification of a novel β-N-acetylhexosaminidase (Pcb-NAHA1) from marine Zoanthid Palythoa caribaeorum (Cnidaria, Anthozoa, Zoanthidea)

2008 ◽  
Vol 58 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Djair S.L. Souza ◽  
Maria F. Grossi-de-Sa ◽  
Luciano P. Silva ◽  
Octavio L. Franco ◽  
José E. Gomes-Junior ◽  
...  
Keyword(s):  
Palythoa Caribaeorum
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