نتایج جستجو برای: anemone

تعداد نتایج: 1670  

2012
Miguel Vicente Manzanares

15. McCauley, B.S., Wright, E.P., Exner, C., Kitazawa, C., and Hinman, V.F. (2012). Development of an embryonic skeletogenic mesenchyme lineage in a sea cucumber reveals the trajectory of change for the evolution of novel structures in echinoderms. Evodevo 3, 17. 16. Kraus, Y., Fritzenwanker, J.H., Genikhovich, G., and Technau, U. (2007). The blastoporal organizer of a sea anemone. Curr. Biol. ...

Journal: :Peptides 2012
Armando Alexei Rodríguez Juliana Silva Cassoli Fei Sa Zhi Qiang Dong José Carlos de Freitas Adriano M.C. Pimenta Maria Elena de Lima Katsuhiro Konno Simon Ming Yuen Lee Anoland Garateix André J. Zaharenko

Sea anemones are known to contain a wide diversity of biologically active peptides, mostly unexplored according to recent peptidomic and transcriptomic studies. In the present work, the neurotoxic fractions from the exudates of Stichodactyla helianthus and Bunodosoma granulifera were analyzed by reversed-phase chromatography and mass spectrometry. The first peptide fingerprints of these sea ane...

Journal: :The Journal of experimental biology 1969
P E Pickens

The behaviour of sea anemones ranges from simple reflex activities which are complete within seconds to slow complex movements which last for several hours (Pantin, 1935a; Batham & Pantin, 1950; Robson, 19616; Ross & Sutton, 1961). While the latter are difficult to analyse, the withdrawal or protective responses are very rapid, can be consistently evoked by appropriate electrical stimuli, and h...

2017
Masaaki Sato Kentaro Honda Wilfredo H Uy Darwin I Baslot Tom G Genovia Yohei Nakamura Lawrence Patrick C Bernardo Hiroyuki Kurokochi Allyn Duvin S Pantallano Chunlan Lian Kazuo Nadaoka Masahiro Nakaoka

The establishment of marine protected areas (MPAs) can often lead to environmental differences between MPAs and fishing zones. To determine the effects on marine dispersal of environmental dissimilarity between an MPA and fishing zone, we examined the abundance and recruitment patterns of two anemonefishes (Amphiprion frenatus and A. perideraion) that inhabit sea anemones in different managemen...

2017
Judith F. Carlisle Grant K. Murphy Alison M. Roark

Pale anemones (Aiptasia pallida) coexist with dinoflagellates (primarily Symbiodinium minutum) in a mutualistic relationship. The purpose of this study was to investigate the role of these symbionts in gonad development of anemone hosts. Symbiotic and aposymbiotic anemones were subjected to light cycles that induced gametogenesis. These anemones were then sampled weekly for nine weeks, and gona...

2012
Michael R. Levine Gisèle Muller-Parker

The Pacific intertidal sea anemone Anthopleura xanthogrammica hosts 2 algal symbionts, zoochlorellae Elliptochloris marina and zooxanthellae Symbiodinium muscatinei, either alone or co-occurring. Previous studies have suggested that zoochlorellae and zooxanthellae represent ‘cool’ and ‘warm’ symbionts with respect to their field distributions, and that these symbionts may differ in their nutrit...

2000
W. S. Reynolds

Mutualistic endosymbioses between two partners are complex associations that are regulated by the genetic interactions of the partners. One important marine symbiosis is that between various cnidarians, such as corals and anemones, and their photosynthetic algal symbionts. We have been interested in characterizing cnidarian host genes that are expressed as a function of the symbiotic state, usi...

Journal: :Journal of biomolecular NMR 2000
W Zhang M G Hinds G Anderluh P E Hanse R S Norton

Sea anemone cytolysins constitute a novel class of toxins that functions by forming channels in cell membranes. In contrast to the bacterial pore-forming toxins, there is little detailed information on the mechanism of action of these toxins and as yet no 3-D structures have been determined. These highly basic toxins of mass ∼20 kDa generate pores in membranes containing sphingomyelin by formin...

Journal: :Molecular biology and evolution 2008
Yehu Moran Hagar Weinberger James C Sullivan Adam M Reitzel John R Finnerty Michael Gurevitz

Gene families, which encode toxins, are found in many poisonous animals, yet there is limited understanding of their evolution at the nucleotide level. The release of the genome draft sequence for the sea anemone Nematostella vectensis enabled a comprehensive study of a gene family whose neurotoxin products affect voltage-gated sodium channels. All gene family members are clustered in a highly ...

Journal: :Toxicon : official journal of the International Society on Toxinology 2009
Andrej Razpotnik Igor Krizaj William R Kem Peter Macek Tom Turk

A new pore-forming cytolytic protein was isolated from the Northern red sea anemone, Urticina crassicornis. Its biochemical properties were characterized and partial N-terminal amino acid sequence was determined. The cytolysin, named UcI, has a molecular mass of around 30kDa and lacks phospholipase A(2) activity. UcI lyses bovine erythrocytes at nanomolar concentrations. Hemolysis is a result o...

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