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  1 / 1116 MEDLINE  
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[PMID]:28006796
[Au] Autor:Kozlowska A
[Ad] Endereço:Institute of Paleobiology Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland.. akd@twarda.pan.pl.
[Ti] Título:A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post-lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock).
[So] Source:Zootaxa;4208(6):zootaxa.4208.6.2, 2016 Dec 21.
[Is] ISSN:1175-5334
[Cp] País de publicação:New Zealand
[La] Idioma:eng
[Ab] Resumo:Gothograptus? meganassa Rickards & Palmer, 2002 is assigned to a new genus Semigothograptus. New, well preserved material from the dubius/nassa Biozone (upper Homerian, Silurian) of the Bartoszyce IG-1 drill core Poland is described. This provides a new phylogenetic perspective on the evolution of post-lundgreni Event retiolitines. Semigothograptus meganassa is considered to be a descendant of Gothograptus nassa, although one of the most significant differences between these forms is the position of the nema, and narrow finite tubarium ending in an appendix in G. nassa. S. meganassa possesses looping meshes of the ancora umbrella recognised in Gothograptus, Papiliograptus, and Baculograptus and shares the common characters of all stratigraphical younger retiolitines. It is recognised that the S. meganassa is known from four terrains: Avalonia, Baltica, Bohemia, and Saxo-Thuringia. Analysis of the genicular hoods of nassa type, characteristic of Gothograptus nassa, Gothograptus kozlowskii, Semigothograptus meganassa, and Neogothograptus eximinassa, demonstrates their unique, solid bandage construction.
[Mh] Termos MeSH primário: Cordados não Vertebrados/anatomia & histologia
Cordados não Vertebrados/classificação
Fósseis/anatomia & histologia
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Polônia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161223
[St] Status:MEDLINE
[do] DOI:10.11646/zootaxa.4208.6.2


  2 / 1116 MEDLINE  
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[PMID]:27732626
[Au] Autor:Chatzievangelou D; Doya C; Thomsen L; Purser A; Aguzzi J
[Ad] Endereço:Jacobs University Bremen, Bremen, Germany.
[Ti] Título:High-Frequency Patterns in the Abundance of Benthic Species near a Cold-Seep - An Internet Operated Vehicle Application.
[So] Source:PLoS One;11(10):e0163808, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Three benthic megafaunal species (i.e. sablefish Anoplopoma fimbria; pacific hagfish Eptatretus stoutii and a group of juvenile crabs) were tested for diel behavioral patterns at the methane hydrates site of Barkley Canyon (890 m depth), off Vancouver Island (BC, Canada). Fluctuations of animal counts in linear video-transects conducted with the Internet Operated Deep-Sea Crawler "Wally" in June, July and December of 2013, were used as proxy of population activity rhythms. Count time series and environmental parameters were analyzed under the hypothesis that the environmental conditioning of activity rhythms depends on the life habits of particular species (i.e. movement type and trophic level). Non-linear least squares modeling of biological time series revealed significant diel periods for sablefish in summer and for hagfish and crabs in December. Combined cross-correlation and redundancy (RDA) analyses showed strong relationships among environmental fluctuations and detected megafauna. In particular, sablefish presence during summer months was related to flow magnitude, while the activity of pacific hagfish and juvenile crabs in December correlated with change in chemical parameters (i.e. chlorophyll and oxygen concentrations, respectively). Waveform analyses of animal counts and environmental variables confirmed the phase delay during the 24 h cycle. The timing of detection of sablefish occurred under low flow velocities, a possible behavioral adaptation to the general hypoxic conditions. The proposed effect of chlorophyll concentrations on hagfish counts highlights the potential role of phytodetritus as an alternative food source for this opportunistic feeder. The juvenile crabs seemed to display a cryptic behavior, possibly to avoid predation, though this was suppressed when oxygen levels were at a minimum. Our results highlight the potential advantages such mobile observation platforms offer in multiparametric deep-sea monitoring in terms of both spatial and temporal resolution and add to the vastly understudied field of diel rhythms of deep-sea megafauna.
[Mh] Termos MeSH primário: Cordados não Vertebrados/fisiologia
[Mh] Termos MeSH secundário: Animais
Braquiúros/fisiologia
Canadá
Feiticeiras (Peixe)/fisiologia
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170509
[Lr] Data última revisão:
170509
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161013
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0163808


  3 / 1116 MEDLINE  
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[PMID]:27701429
[Au] Autor:Tassia MG; Cannon JT; Konikoff CE; Shenkar N; Halanych KM; Swalla BJ
[Ad] Endereço:Department of Biology, University of Washington, Seattle, WA, United States of America.
[Ti] Título:The Global Diversity of Hemichordata.
[So] Source:PLoS One;11(10):e0162564, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phylum Hemichordata, composed of worm-like Enteropneusta and colonial Pterobranchia, has been reported to only contain about 100 species. However, recent studies of hemichordate phylogeny and taxonomy suggest the species number has been largely underestimated. One issue is that species must be described by experts, and historically few taxonomists have studied this group of marine invertebrates. Despite this previous lack of coverage, interest in hemichordates has piqued in the past couple of decades, as they are critical to understanding the evolution of chordates-as acorn worms likely resemble the deuterostome ancestor more closely than any other extant animal. This review provides an overview of our current knowledge of hemichordates, focusing specifically on their global biodiversity, geographic distribution, and taxonomy. Using information available in the World Register of Marine Species and published literature, we assembled a list of 130 described, extant species. The majority (83%) of these species are enteropneusts, and more taxonomic descriptions are forthcoming. Ptychoderidae contained the greatest number of species (41 species), closely followed by Harrimaniidae (40 species), of the recognized hemichordate families. Hemichordates are found throughout the world's oceans, with the highest reported numbers by regions with marine labs and diligent taxonomic efforts (e.g. North Pacific and North Atlantic). Pterobranchs are abundant in Antarctica, but have also been found at lower latitudes. We consider this a baseline report and expect new species of Hemichordata will continue to be discovered and described as new marine habitats are characterized and explored.
[Mh] Termos MeSH primário: Biodiversidade
Cordados não Vertebrados
[Mh] Termos MeSH secundário: Animais
Organismos Aquáticos
Cordados não Vertebrados/anatomia & histologia
Cordados não Vertebrados/classificação
Cordados não Vertebrados/genética
Geografia
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170616
[Lr] Data última revisão:
170616
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161005
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0162564


  4 / 1116 MEDLINE  
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[PMID]:27493210
[Au] Autor:Sonobe H; Obinata T; Minokawa T; Haruta T; Kawamura Y; Wakatsuki S; Sato N
[Ad] Endereço:Department of Nanobiology, Graduate School of Advanced Integration Science.
[Ti] Título:Characterization of paramyosin and thin filaments in the smooth muscle of acorn worm, a member of hemichordates.
[So] Source:J Biochem;160(6):369-379, 2016 Dec.
[Is] ISSN:1756-2651
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Paramyosin is a myosin-binding protein characteristic of invertebrate animals, while troponin is a Ca -dependent regulator of muscle contraction. Both proteins are widely distributed in protostomes, while in deuterostomes, their distribution is limited; namely, presence of paramyosin and absence of troponin are common features in echinoderm muscles, while muscles of chordates contain troponin but lack paramyosin. In this study, we examined the muscle of a hemichordate, acorn worm, to clarify whether this animal is like echinoderms or like the other deuterostome animals. We found a 100-kDa protein in the smooth muscle of acorn worm. This protein was identified with paramyosin, since the purified protein formed paracrystals with a constant axial periodicity in the presence of divalent cations as paramyosin of other animals, showed ability to interact with myosin and shared common antigenicity with echinoderm paramyosin. On the other hand, troponin band was not detected in isolated thin filaments, and the filaments increased myosin-ATPase activity in a Ca -independent manner. The results indicate that troponin is lacking in thin filaments of acorn worm muscle just as in those of echinoderms. The muscle of hemichordate acorn worm is quite similar to echinoderm muscles, but different from chordate muscles.
[Mh] Termos MeSH primário: Cordados não Vertebrados
Músculo Liso/metabolismo
Tropomiosina
[Mh] Termos MeSH secundário: Animais
Cordados não Vertebrados/genética
Cordados não Vertebrados/metabolismo
Tropomiosina/genética
Tropomiosina/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Tropomyosin)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170130
[Lr] Data última revisão:
170130
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160806
[St] Status:MEDLINE


  5 / 1116 MEDLINE  
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[PMID]:27383414
[Au] Autor:Nanglu K; Caron JB; Conway Morris S; Cameron CB
[Ad] Endereço:Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, M5S 2J7, Canada. karma.nanglu@alum.utoronto.ca.
[Ti] Título:Cambrian suspension-feeding tubicolous hemichordates.
[So] Source:BMC Biol;14:56, 2016 Jul 07.
[Is] ISSN:1741-7007
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The combination of a meager fossil record of vermiform enteropneusts and their disparity with the tubicolous pterobranchs renders early hemichordate evolution conjectural. The middle Cambrian Oesia disjuncta from the Burgess Shale has been compared to annelids, tunicates and chaetognaths, but on the basis of abundant new material is now identified as a primitive hemichordate. RESULTS: Notable features include a facultative tubicolous habit, a posterior grasping structure and an extensive pharynx. These characters, along with the spirally arranged openings in the associated organic tube (previously assigned to the green alga Margaretia), confirm Oesia as a tiered suspension feeder. CONCLUSIONS: Increasing predation pressure was probably one of the main causes of a transition to the infauna. In crown group enteropneusts this was accompanied by a loss of the tube and reduction in gill bars, with a corresponding shift to deposit feeding. The posterior grasping structure may represent an ancestral precursor to the pterobranch stolon, so facilitating their colonial lifestyle. The focus on suspension feeding as a primary mode of life amongst the basal hemichordates adds further evidence to the hypothesis that suspension feeding is the ancestral state for the major clade Deuterostomia.
[Mh] Termos MeSH primário: Cordados não Vertebrados/classificação
Fósseis
[Mh] Termos MeSH secundário: Animais
Evolução Biológica
Cordados não Vertebrados/anatomia & histologia
Brânquias/anatomia & histologia
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[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:160708
[St] Status:MEDLINE
[do] DOI:10.1186/s12915-016-0271-4


  6 / 1116 MEDLINE  
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[PMID]:27220244
[Au] Autor:Stolyarova MV; Valkovich EI
[Ti] Título:[PHYSIOLOGICAL REGENERATION MECHANISM IN SKIN AND INTESTINAL EPITHELIA OF SACCOGLOSSUS MERESCHKOWSKII (ENTEROPNEUSTA, HEMICHORDATA)].
[So] Source:Zh Evol Biokhim Fiziol;52(1):76-8, 2016 Jan-Feb.
[Is] ISSN:0044-4529
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Mh] Termos MeSH primário: Cordados não Vertebrados/fisiologia
Regeneração
Fenômenos Fisiológicos da Pele
[Mh] Termos MeSH secundário: Animais
Proliferação Celular
Mucosa Intestinal/fisiologia
Invertebrados/fisiologia
Pele/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1606
[Cu] Atualização por classe:160525
[Lr] Data última revisão:
160525
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160526
[St] Status:MEDLINE


  7 / 1116 MEDLINE  
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[PMID]:26663879
[Au] Autor:Lin CY; Tung CH; Yu JK; Su YH
[Ad] Endereço:Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, Taiwan.
[Ti] Título:Reproductive periodicity, spawning induction, and larval metamorphosis of the hemichordate acorn worm Ptychodera flava.
[So] Source:J Exp Zool B Mol Dev Evol;326(1):47-60, 2016 Jan.
[Is] ISSN:1552-5015
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The indirect-developing enteropneust acorn worm Ptychodera flava has been used as a hemichordate model system for studying the developmental evolution of deuterostome body plans and the origins of chordate characteristics. However, research progress has been hindered by the limited accessibility of its embryonic materials and metamorphosing larvae. In this study, we identified an abundant population of P. flava in Penghu, Taiwan, and examined the feasibility of using this animal for developmental studies. Through histological examination, we established that the reproductive season of this population is between September and December, with a peak breeding period in October and November. In addition, we have developed new procedures that can induce P. flava spawning at any time of the day during the breeding season, with a higher successful rate than that achieved using a previously published method. Moreover, the culturing system we developed enables rearing of P. flava larvae through various planktonic stages and eventual metamorphosis into benthic juveniles, all under laboratory conditions. We anticipate that the animal resources and new technical procedures reported here will further facilitate the use of P. flava as a model organism for evolutionary and developmental biology research.
[Mh] Termos MeSH primário: Cordados não Vertebrados/fisiologia
Metamorfose Biológica
[Mh] Termos MeSH secundário: Animais
Aquicultura
Cordados não Vertebrados/crescimento & desenvolvimento
Larva/crescimento & desenvolvimento
Larva/fisiologia
Estágios do Ciclo de Vida
Reprodução
Estações do Ano
Taiwan
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170120
[Lr] Data última revisão:
170120
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151215
[St] Status:MEDLINE
[do] DOI:10.1002/jez.b.22665


  8 / 1116 MEDLINE  
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[PMID]:26580019
[Au] Autor:Dunn CW
[Ad] Endereço:Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island 02912, USA.
[Ti] Título:Genomics: Acorn worms in a nutshell.
[So] Source:Nature;527(7579):448-9, 2015 Nov 26.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Cordados não Vertebrados/genética
Evolução Molecular
Genoma/genética
[Mh] Termos MeSH secundário: Animais
[Pt] Tipo de publicação:COMMENT; JOURNAL ARTICLE
[Em] Mês de entrada:1512
[Cu] Atualização por classe:151126
[Lr] Data última revisão:
151126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151119
[St] Status:MEDLINE
[do] DOI:10.1038/nature16315


  9 / 1116 MEDLINE  
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[PMID]:26580012
[Au] Autor:Simakov O; Kawashima T; Marlétaz F; Jenkins J; Koyanagi R; Mitros T; Hisata K; Bredeson J; Shoguchi E; Gyoja F; Yue JX; Chen YC; Freeman RM; Sasaki A; Hikosaka-Katayama T; Sato A; Fujie M; Baughman KW; Levine J; Gonzalez P; Cameron C; Fritzenwanker JH; Pani AM; Goto H; Kanda M; Arakaki N; Yamasaki S; Qu J; Cree A; Ding Y; Dinh HH; Dugan S; Holder M; Jhangiani SN; Kovar CL; Lee SL; Lewis LR; Morton D; Nazareth LV; Okwuonu G; Santibanez J; Chen R; Richards S; Muzny DM; Gillis A; Peshkin L; Wu M; Humphreys T; Su YH; Putnam NH
[Ad] Endereço:Molecular Genetics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan.
[Ti] Título:Hemichordate genomes and deuterostome origins.
[So] Source:Nature;527(7579):459-65, 2015 Nov 26.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Acorn worms, also known as enteropneust (literally, 'gut-breathing') hemichordates, are marine invertebrates that share features with echinoderms and chordates. Together, these three phyla comprise the deuterostomes. Here we report the draft genome sequences of two acorn worms, Saccoglossus kowalevskii and Ptychodera flava. By comparing them with diverse bilaterian genomes, we identify shared traits that were probably inherited from the last common deuterostome ancestor, and then explore evolutionary trajectories leading from this ancestor to hemichordates, echinoderms and chordates. The hemichordate genomes exhibit extensive conserved synteny with amphioxus and other bilaterians, and deeply conserved non-coding sequences that are candidates for conserved gene-regulatory elements. Notably, hemichordates possess a deuterostome-specific genomic cluster of four ordered transcription factor genes, the expression of which is associated with the development of pharyngeal 'gill' slits, the foremost morphological innovation of early deuterostomes, and is probably central to their filter-feeding lifestyle. Comparative analysis reveals numerous deuterostome-specific gene novelties, including genes found in deuterostomes and marine microbes, but not other animals. The putative functions of these genes can be linked to physiological, metabolic and developmental specializations of the filter-feeding ancestor.
[Mh] Termos MeSH primário: Cordados não Vertebrados/genética
Evolução Molecular
Genoma/genética
[Mh] Termos MeSH secundário: Animais
Cordados não Vertebrados/classificação
Sequência Conservada/genética
Equinodermos/classificação
Equinodermos/genética
Família Multigênica/genética
Filogenia
Transdução de Sinais
Sintenia/genética
Fator de Crescimento Transformador beta
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Transforming Growth Factor beta)
[Em] Mês de entrada:1512
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151119
[St] Status:MEDLINE
[do] DOI:10.1038/nature16150


  10 / 1116 MEDLINE  
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[PMID]:26472700
[Au] Autor:D'Aniello S; Delroisse J; Valero-Gracia A; Lowe EK; Byrne M; Cannon JT; Halanych KM; Elphick MR; Mallefet J; Kaul-Strehlow S; Lowe CJ; Flammang P; Ullrich-Lüter E; Wanninger A; Arnone MI
[Ad] Endereço:Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy. Electronic address: salvatore.daniello@szn.it.
[Ti] Título:Opsin evolution in the Ambulacraria.
[So] Source:Mar Genomics;24 Pt 2:177-83, 2015 Dec.
[Is] ISSN:1876-7478
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Opsins--G-protein coupled receptors involved in photoreception--have been extensively studied in the animal kingdom. The present work provides new insights into opsin-based photoreception and photoreceptor cell evolution with a first analysis of opsin sequence data for a major deuterostome clade, the Ambulacraria. Systematic data analysis, including for the first time hemichordate opsin sequences and an expanded echinoderm dataset, led to a robust opsin phylogeny for this cornerstone superphylum. Multiple genomic and transcriptomic resources were surveyed to cover each class of Hemichordata and Echinodermata. In total, 119 ambulacrarian opsin sequences were found, 22 new sequences in hemichordates and 97 in echinoderms (including 67 new sequences). We framed the ambulacrarian opsin repertoire within eumetazoan diversity by including selected reference opsins from non-ambulacrarians. Our findings corroborate the presence of all major ancestral bilaterian opsin groups in Ambulacraria. Furthermore, we identified two opsin groups specific to echinoderms. In conclusion, a molecular phylogenetic framework for investigating light-perception and photobiological behaviors in marine deuterostomes has been obtained.
[Mh] Termos MeSH primário: Cordados não Vertebrados/genética
Equinodermos/genética
Evolução Molecular
Opsinas/metabolismo
Filogenia
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Regulação da Expressão Gênica
Modelos Moleculares
Dados de Sequência Molecular
Opsinas/genética
Conformação Proteica
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Opsins)
[Em] Mês de entrada:1610
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151017
[St] Status:MEDLINE



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