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[PMID]:29346442
[Au] Autor:Lewis LS; Smith JE; Eynaud Y
[Ad] Endereço:Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, University of California San Diego, San Diego, California, United States of America.
[Ti] Título:Comparative metabolic ecology of tropical herbivorous echinoids on a coral reef.
[So] Source:PLoS One;13(1):e0190470, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The metabolic rate of consumers is a key driver of ecosystem dynamics. On coral reefs, herbivorous echinoids consume fleshy algae, facilitating the growth of reef-building calcified organisms; however, little is known about differences among species in their metabolic and functional ecology. Here, we used log-linear (log-log) regression models to examine the allometric scaling of mass and routine metabolic rate for five common herbivorous echinoids on a Hawaiian coral reef: Echinothrix calamaris, E. diadema, Echinometra matthaei, Heterocentrotus mammillatus, and Tripneustes gratilla. Scaling relationships were then contrasted with empirical observations of echinoid ecology and general metabolic theory to broaden our understanding of diversity in the metabolic and functional ecology of tropical herbivorous echinoids. RESULTS: Test diameter and species explained 98% of the variation in mass, and mass and species explained 92.4% and 87.5% of the variation in individual (I) and mass-specific (B) metabolic rates, respectively. Scaling exponents did not differ for mass or metabolism; however, normalizing constants differed significantly among species. Mass varied as the cube of test diameter (b = 2.9), with HM exhibiting a significantly higher normalizing constant than other species, likely due to its heavily-calcified spines and skeleton. Individual metabolic rate varied approximately as the 2/5 power of mass (γ = 0.44); significantly smaller than the 3/4 universal scaling coefficient, but inclusive of 2/3 scaling. E. calamaris and H. mammillatus exhibited the lowest normalizing constants, corresponding with their slow-moving, cryptic, rock-boring life-history. In contrast, E. calamaris, E. diadema, and T. gratilla, exhibited higher metabolic rates, likely reflecting their higher levels of activity and ability to freely browse for preferred algae due to chemical anti-predator defenses. Thus, differences in metabolic scaling appeared to correspond with differences in phylogeny, behavior, and ecological function. Such comparative metabolic assessments are central to informing theory, ecological models, and the effective management of ecosystems.
[Mh] Termos MeSH primário: Recifes de Corais
Ecossistema
Herbivoria
Ouriços-do-Mar/fisiologia
[Mh] Termos MeSH secundário: Animais
Ouriços-do-Mar/metabolismo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180119
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190470


  2 / 7339 MEDLINE  
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[PMID]:29257953
[Au] Autor:Sigg MA; Menchen T; Lee C; Johnson J; Jungnickel MK; Choksi SP; Garcia G; Busengdal H; Dougherty GW; Pennekamp P; Werner C; Rentzsch F; Florman HM; Krogan N; Wallingford JB; Omran H; Reiter JF
[Ad] Endereço:Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, CA 94158, USA.
[Ti] Título:Evolutionary Proteomics Uncovers Ancient Associations of Cilia with Signaling Pathways.
[So] Source:Dev Cell;43(6):744-762.e11, 2017 12 18.
[Is] ISSN:1878-1551
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cilia are organelles specialized for movement and signaling. To infer when during evolution signaling pathways became associated with cilia, we characterized the proteomes of cilia from sea urchins, sea anemones, and choanoflagellates. We identified 437 high-confidence ciliary candidate proteins conserved in mammals and discovered that Hedgehog and G-protein-coupled receptor pathways were linked to cilia before the origin of bilateria and transient receptor potential (TRP) channels before the origin of animals. We demonstrated that candidates not previously implicated in ciliary biology localized to cilia and further investigated ENKUR, a TRP channel-interacting protein identified in the cilia of all three organisms. ENKUR localizes to motile cilia and is required for patterning the left-right axis in vertebrates. Moreover, mutation of ENKUR causes situs inversus in humans. Thus, proteomic profiling of cilia from diverse eukaryotes defines a conserved ciliary proteome, reveals ancient connections to signaling, and uncovers a ciliary protein that underlies development and human disease.
[Mh] Termos MeSH primário: Proteínas Adaptadoras de Transdução de Sinal/metabolismo
Proteínas de Ligação a Calmodulina/metabolismo
Cílios/genética
Cílios/metabolismo
[Mh] Termos MeSH secundário: Proteínas Adaptadoras de Transdução de Sinal/genética
Animais
Proteínas de Ligação a Calmodulina/genética
Técnicas de Cultura de Células
Coanoflagelados/metabolismo
Proteínas Hedgehog/metabolismo
Seres Humanos
Camundongos
Mutação
Organelas/metabolismo
Filogenia
Proteômica/métodos
Receptores Acoplados a Proteínas-G/metabolismo
Anêmonas-do-Mar/metabolismo
Ouriços-do-Mar/metabolismo
Transdução de Sinais/genética
Transdução de Sinais/fisiologia
Canais de Receptores Transientes de Potencial/metabolismo
Xenopus laevis/metabolismo
Peixe-Zebra/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Adaptor Proteins, Signal Transducing); 0 (Calmodulin-Binding Proteins); 0 (ENKUR protein, human); 0 (Hedgehog Proteins); 0 (Receptors, G-Protein-Coupled); 0 (Transient Receptor Potential Channels)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171220
[St] Status:MEDLINE


  3 / 7339 MEDLINE  
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[PMID]:28854254
[Au] Autor:Seike K; Shirai K; Murakami-Sugihara N
[Ad] Endereço:Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Chiba, Japan.
[Ti] Título:Using tsunami deposits to determine the maximum depth of benthic burrowing.
[So] Source:PLoS One;12(8):e0182753, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The maximum depth of sediment biomixing is directly related to the vertical extent of post-depositional environmental alteration in the sediment; consequently, it is important to determine the maximum burrowing depth. This study examined the maximum depth of bioturbation in a natural marine environment in Funakoshi Bay, northeastern Japan, using observations of bioturbation structures developed in an event layer (tsunami deposits of the 2011 Tohoku-Oki earthquake) and measurements of the radioactive cesium concentrations in this layer. The observations revealed that the depth of bioturbation (i.e., the thickness of the biomixing layer) ranged between 11 and 22 cm, and varied among the sampling sites. In contrast, the radioactive cesium concentrations showed that the processing of radioactive cesium in coastal environments may include other pathways in addition to bioturbation. The data also revealed the nature of the bioturbation by the heart urchin Echinocardium cordatum (Echinoidea: Loveniidae), which is one of the important ecosystem engineers in seafloor environments. The maximum burrowing depth of E. cordatum in Funakoshi Bay was 22 cm from the seafloor surface.
[Mh] Termos MeSH primário: Terremotos
Sedimentos Geológicos/análise
Ouriços-do-Mar/fisiologia
Tsunamis
[Mh] Termos MeSH secundário: Animais
Ecossistema
Japão
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170831
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182753


  4 / 7339 MEDLINE  
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[PMID]:28851710
[Au] Autor:Mellott DO; Thisdelle J; Burke RD
[Ad] Endereço:Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada V8W 2Y2.
[Ti] Título:Notch signaling patterns neurogenic ectoderm and regulates the asymmetric division of neural progenitors in sea urchin embryos.
[So] Source:Development;144(19):3602-3611, 2017 10 01.
[Is] ISSN:1477-9129
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:We have examined regulation of neurogenesis by Delta/Notch signaling in sea urchin embryos. At gastrulation, neural progenitors enter S phase coincident with expression of Sp-SoxC. We used a BAC containing knocked into the locus to label neural progenitors. Live imaging and immunolocalizations indicate that Sp-SoxC-expressing cells divide to produce pairs of adjacent cells expressing GFP. Over an interval of about 6 h, one cell fragments, undergoes apoptosis and expresses high levels of activated Caspase3. A Notch reporter indicates that Notch signaling is activated in cells adjacent to cells expressing Sp-SoxC. Inhibition of γ-secretase, injection of Sp-Delta morpholinos or CRISPR/Cas9-induced mutation of results in supernumerary neural progenitors and neurons. Interfering with Notch signaling increases neural progenitor recruitment and pairs of neural progenitors. Thus, Notch signaling restricts the number of neural progenitors recruited and regulates the fate of progeny of the asymmetric division. We propose a model in which localized signaling converts ectodermal and ciliary band cells to neural progenitors that divide asymmetrically to produce a neural precursor and an apoptotic cell.
[Mh] Termos MeSH primário: Divisão Celular Assimétrica
Embrião não Mamífero/metabolismo
Células-Tronco Neurais/citologia
Neurogênese
Receptores Notch/metabolismo
Ouriços-do-Mar/embriologia
Ouriços-do-Mar/metabolismo
Transdução de Sinais
[Mh] Termos MeSH secundário: Animais
Apoptose
Padronização Corporal
Ectoderma/citologia
Ectoderma/metabolismo
Embrião não Mamífero/citologia
Proteínas de Fluorescência Verde/metabolismo
Mitose
Modelos Biológicos
Células-Tronco Neurais/metabolismo
Neurônios/citologia
Neurônios/metabolismo
Fatores de Transcrição SOX/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Receptors, Notch); 0 (SOX Transcription Factors); 147336-22-9 (Green Fluorescent Proteins)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170831
[St] Status:MEDLINE
[do] DOI:10.1242/dev.151720


  5 / 7339 MEDLINE  
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[PMID]:28811313
[Au] Autor:Kitzmann P; Weißkopf M; Schacht MI; Bucher G
[Ad] Endereço:Department of Evolutionary Developmental Genetics, GZMB, Universität Göttingen, Justus von Liebig Weg 11, 37077 Göttingen, Germany.
[Ti] Título:A key role for in anterior head and central brain patterning in insects.
[So] Source:Development;144(16):2969-2981, 2017 08 15.
[Is] ISSN:1477-9129
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Anterior patterning of animals is based on a set of highly conserved transcription factors but the interactions within the protostome anterior gene regulatory network (aGRN) remain enigmatic. Here, we identify the red flour beetle ortholog of ( ) as a novel upstream component of the aGRN. It is required for the development of the labrum and higher order brain structures, namely the central complex and the mushroom bodies. We reveal interactions by RNAi and heat shock-mediated misexpression. Surprisingly, and mutually activate each other, forming a novel regulatory module at the top of the aGRN. Comparisons of our results with those of sea urchins and cnidarians suggest that has acquired more upstream functions in the aGRN during protostome evolution. Our findings expand the knowledge on gene function to include essential roles in epidermal development and central brain patterning.
[Mh] Termos MeSH primário: Proteínas de Insetos/metabolismo
Tribolium/embriologia
[Mh] Termos MeSH secundário: Animais
Padronização Corporal/genética
Padronização Corporal/fisiologia
Cnidários/metabolismo
Regulação da Expressão Gênica no Desenvolvimento/genética
Regulação da Expressão Gênica no Desenvolvimento/fisiologia
Proteínas de Insetos/genética
Ouriços-do-Mar/metabolismo
Fatores de Transcrição/genética
Fatores de Transcrição/metabolismo
Tribolium/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Insect Proteins); 0 (Transcription Factors)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170817
[St] Status:MEDLINE
[do] DOI:10.1242/dev.147637


  6 / 7339 MEDLINE  
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[PMID]:28705895
[Au] Autor:Chang WL; Chang YC; Lin KT; Li HR; Pai CY; Chen JH; Su YH
[Ad] Endereço:Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan.
[Ti] Título:Asymmetric distribution of hypoxia-inducible factor α regulates dorsoventral axis establishment in the early sea urchin embryo.
[So] Source:Development;144(16):2940-2950, 2017 08 15.
[Is] ISSN:1477-9129
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Hypoxia signaling is an ancient pathway by which animals can respond to low oxygen. Malfunction of this pathway disturbs hypoxic acclimation and can result in various diseases, including cancers. The role of hypoxia signaling in early embryogenesis remains unclear. Here, we show that in the blastula of the sea urchin , hypoxia-inducible factor α (HIFα), the downstream transcription factor of the hypoxia pathway, is localized and transcriptionally active on the future dorsal side. This asymmetric distribution is attributable to its oxygen-sensing ability. Manipulations of the HIFα level entrained the dorsoventral axis, as the side with the higher level of HIFα tends to develop into the dorsal side. Gene expression analyses revealed that HIFα restricts the expression of to the ventral side and activates several genes encoding transcription factors on the dorsal side. We also observed that intrinsic hypoxic signals in the early embryos formed a gradient, which was disrupted under hypoxic conditions. Our results reveal an unprecedented role of the hypoxia pathway in animal development.
[Mh] Termos MeSH primário: Embrião não Mamífero/metabolismo
Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo
Ouriços-do-Mar/embriologia
Ouriços-do-Mar/metabolismo
[Mh] Termos MeSH secundário: Animais
Padronização Corporal/genética
Padronização Corporal/fisiologia
Regulação da Expressão Gênica no Desenvolvimento/genética
Regulação da Expressão Gênica no Desenvolvimento/fisiologia
Subunidade alfa do Fator 1 Induzível por Hipóxia/genética
Transdução de Sinais/genética
Transdução de Sinais/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Hypoxia-Inducible Factor 1, alpha Subunit)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170715
[St] Status:MEDLINE
[do] DOI:10.1242/dev.145052


  7 / 7339 MEDLINE  
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[PMID]:28636353
[Au] Autor:Takano S; Tsuzuki T; Murayama T; Kameda T; Kumaki Y; Sakurai T; Fukuda H; Watanabe M; Arisawa M; Shuto S
[Ti] Título:Synthesis of 8-Substituted Analogues of Cyclic ADP-4-Thioribose and Their Unexpected Identification as Ca -Mobilizing Full Agonists.
[So] Source:J Med Chem;60(13):5868-5875, 2017 Jul 13.
[Is] ISSN:1520-4804
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A series of 8-substituted analogues of cyclic ADP-4-thioribose (cADPtR, 3), which is a stable equivalent of Ca -mobilizing second messenger cyclic ADP-ribose (cADPR, 1), were designed as potential pharmacological tools for studies on cADPR-modulated Ca signaling pathways. These 8-amino analogue (8-NH -cADPtR, 4), 8-azido analogue (8-N -cADPtR, 5), and 8-chloro analogue (8-Cl-cADPtR, 6) were efficiently synthesized, where the stereoselective N1-ß-thioribosyladenine ring closure reaction via an α/ß-equilibrium of the 1-aminothioribose derivative and construction of the characteristic 18-membered pyrophosphate ring by Ag -promoted activation of a phenyl phosphorothioate type substrate were the two key steps. Although 8-NH -cADPR (2) is a well-known potent antagonist against cADPR-inducing Ca -release, the 4-thioribose congener 8-NH -cADPtR turned out unexpectedly to be a full agonist in sea urchin egg homogenate evaluation system. This important finding suggested that the ring-oxygen in the N1-ribose of cADPR analogues is essential for the antagonistic activity in the Ca -signaling pathway, which can contribute to clarify the structure-agonist/antagonist activity relationship.
[Mh] Termos MeSH primário: Sinalização do Cálcio/efeitos dos fármacos
ADP-Ribose Cíclica/análogos & derivados
ADP-Ribose Cíclica/farmacologia
[Mh] Termos MeSH secundário: Animais
Azidas/química
Azidas/farmacologia
Cálcio/metabolismo
ADP-Ribose Cíclica/química
Halogenação
Modelos Moleculares
Ouriços-do-Mar/efeitos dos fármacos
Ouriços-do-Mar/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azides); 119340-53-3 (Cyclic ADP-Ribose); 151898-25-8 (8-aminoadenosine cyclic 3',5'-(hydrogen phosphate) 5'-ribofuranosyl ester); SY7Q814VUP (Calcium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170801
[Lr] Data última revisão:
170801
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170622
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jmedchem.7b00540


  8 / 7339 MEDLINE  
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[PMID]:28623689
[Au] Autor:Torres-Duarte C; Ramos-Torres KM; Rahimoff R; Cherr GN
[Ad] Endereço:Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA, USA.
[Ti] Título:Stage specific effects of soluble copper and copper oxide nanoparticles during sea urchin embryo development and their relation to intracellular copper uptake.
[So] Source:Aquat Toxicol;189:134-141, 2017 Aug.
[Is] ISSN:1879-1514
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The effects of exposure to either soluble copper (copper sulfate) or copper oxide nanoparticles (nano-CuO) during specific early developmental stages of sea urchin embryos were analyzed. Soluble copper caused significant malformations in embryos (skeletal malformations, delayed development or gut malformations) when present at any given stage, while cleavage stage was the most sensitive to nano-CuO exposure causing skeletal malformations and decreased total antioxidant capacity. The stage specificity was linked to higher endocytic activity during the first hours of development that leads to higher accumulation of copper in specific cells critical for development. Results indicate that nano-CuO results in higher accumulation of copper inside of embryos and this intracellular copper is more persistent as compared to soluble copper. The possible implications later in development are discussed.
[Mh] Termos MeSH primário: Sulfato de Cobre/toxicidade
Cobre/toxicidade
Embrião não Mamífero/efeitos dos fármacos
Nanopartículas Metálicas/toxicidade
Ouriços-do-Mar/efeitos dos fármacos
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Animais
Antioxidantes/metabolismo
Cobre/química
Sulfato de Cobre/química
Embrião não Mamífero/anormalidades
Embrião não Mamífero/metabolismo
Desenvolvimento Embrionário/efeitos dos fármacos
Nanopartículas Metálicas/química
Microscopia de Fluorescência
Ouriços-do-Mar/metabolismo
Solubilidade
Poluentes Químicos da Água/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Water Pollutants, Chemical); 789U1901C5 (Copper); LRX7AJ16DT (Copper Sulfate); V1XJQ704R4 (cupric oxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170618
[St] Status:MEDLINE


  9 / 7339 MEDLINE  
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[PMID]:28622556
[Au] Autor:Fabbrocini A; Cassin D; Santucci A; Scirocco T; Specchiulli A; D'Adamo R
[Ad] Endereço:Consiglio Nazionale delle Ricerche, Istituto di Scienze Marine, UOS Lesina, Via Pola 4, 71010 Lesina, FG, Italy. Electronic address: adele.fabbrocini@fg.ismar.cnr.it.
[Ti] Título:Early chemical and ecotoxicological responses of the Varano lagoon (SE Italy) to a flood event.
[So] Source:Ecotoxicol Environ Saf;144:178-186, 2017 Oct.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The effects on coastal lagoons of floods resulting from intense rainfall need to be assessed using a multidisciplinary approach, able to describe in real time the occurrence of changes in sediment quality, anticipating risk situations. In the present study the effectiveness as pre-screening tool of the MOT-test, an innovative bioassay that uses sperm motility as endpoint, has been evaluated; its response has been compared with the sediment chemical characterization, in order to determine the effects of a flood event occurred in the Varano lagoon, a poorly anthropized Mediterranean coastal lagoon. The MOT-test effect percentages ranged from 10% to 30%, fully reflecting data from chemical analyses. Organic pollutants showed concentrations always below the critical levels. The highest metal values were found in the south-eastern area; however, only for few metals (mainly Cd), and in few sites, they reached the limits defined by the sediment quality guidelines; consistently, these sites are located in the area where a higher stressors' impact was expected and the highest MOT-test effect percentages were recorded. In conclusion, even if results exclude the occurrence of serious contamination events as a consequence of the flood, the runoff resulting from the intense rainfall event has caused a pollutant load in the lagoon, consistent with the localization of the main anthropogenic activities in the catchment area. Moreover, preliminary data indicate the validity of the approach adopted for the post-flood quality assessment, proving the usefulness of the MOT-test as early-screening tool in the case of extreme events.
[Mh] Termos MeSH primário: Cádmio/toxicidade
Monitoramento Ambiental/métodos
Inundações
Sedimentos Geológicos/química
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Animais
Bioensaio
Cádmio/análise
Ecotoxicologia
Itália
Masculino
Mar Mediterrâneo
Ouriços-do-Mar/efeitos dos fármacos
Motilidade Espermática/efeitos dos fármacos
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Water Pollutants, Chemical); 00BH33GNGH (Cadmium)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170617
[St] Status:MEDLINE


  10 / 7339 MEDLINE  
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[PMID]:28599151
[Au] Autor:Passarelli MC; Cesar A; Riba I; DelValls TA
[Ad] Endereço:UNESCO/UNITWIN WiCop, Physico Chemical Department, Faculty of Marine and Environmental Studies, CEIMAR, University of Cádiz, Spain. Electronic address: marinapassarelli@gmail.com.
[Ti] Título:Comparative evaluation of sea-urchin larval stage sensitivity to ocean acidification.
[So] Source:Chemosphere;184:224-234, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Changes in the marine carbonate system may affect various calcifying organisms. This study is aimed to compare the sensitivity of embryo-larval development of two species of sea urchins (Paracentrutos lividus and Lytechinus variegatus) collected and exposed to samples from different coastal zone (Spain and Brazil) to ocean acidification. The results showed that the larval stages are very sensitive to small changes in the seawater's pH. The larvae from P. lividus species showed to be more sensitive to acidified elutriate sediments than larvae from L. variegatus sea urchin. Furthermore, this study has demonstrated that the CO enrichment in aquatic ecosystems cause changes on the mobility of the metals: Zn, Cu, Fe, Al and As, which was presented different behavior among them. Although an increase on the mobility of metals was found, the results using the principal component analysis showed that the pH reduction show the highest correlations with the toxicity and is the main cause of embryo-larval development inhibition. In this comparative study it is demonstrated that both species are able to assess potential effects of the ocean acidification related to CO enrichment by both near future scenarios and the risk associated with CO leakages in the Carbon Capture and Storage (CCS) process, and the importance of comparative studies in different zones to improve the understanding of the impacts caused by ocean acidification.
[Mh] Termos MeSH primário: Larva/efeitos dos fármacos
Ouriços-do-Mar/fisiologia
Água do Mar/química
Estresse Fisiológico
[Mh] Termos MeSH secundário: Ácidos/química
Animais
Brasil
Dióxido de Carbono/análise
Ecossistema
Concentração de Íons de Hidrogênio
Larva/fisiologia
Metais/farmacologia
Oceanos e Mares
Ouriços-do-Mar/crescimento & desenvolvimento
Espanha
Poluentes Químicos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acids); 0 (Metals); 0 (Water Pollutants, Chemical); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171026
[Lr] Data última revisão:
171026
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170610
[St] Status:MEDLINE



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