scholarly journals Characterization of the acoustic activity of Perna perna (bivalve mollusc) under laboratory conditions

2019 ◽  
Author(s):  
Ubirajara Gonçalves de Melo Júnior ◽  
Fábio Contrera Xavier ◽  
Daniel Campbell ◽  
Nilce Silveira ◽  
Leonardo Versiani ◽  
...  
Keyword(s):  
Bivalve Mollusc ◽  
Perna Perna ◽  
Acoustic Activity ◽  
Laboratory Conditions

Morphological characterization of hemocytes of the brown mussel Perna perna: An update

2021 ◽  
Author(s):  
Viviane Barneche Fonseca ◽  
Bruno Pinto Cruz ◽  
Simone Silveira da Silva ◽  
Mauro Pereira Soares ◽  
Andrés Delgado Cañedo ◽  
...  
Keyword(s):  
Morphological Characterization ◽  
Perna Perna ◽  
Brown Mussel

scholarly journals Characterization of ten highly polymorphic microsatellite loci for the intertidal mussel Perna perna, and cross species amplification within the genus

2012 ◽  
Vol 5 (1) ◽  
Author(s):  
Nelson C Coelho ◽  
Gerardo I Zardi ◽  
Gareth A Pearson ◽  
Ester A Serrão ◽  
Katy R Nicastro
Keyword(s):  
Microsatellite Loci ◽  
Perna Perna ◽  
Intertidal Mussel ◽  
Polymorphic Microsatellite

Effects of antifouling paints attaching larvae of two spirorbid tubeworms (Serpulidae: Polychaeta)

1964 ◽  
Vol 15 (2) ◽  
pp. 172 ◽  
Author(s):  
IAE Bayly
Keyword(s):  
Cuprous Oxide ◽  
Poor Quality ◽  
Bivalve Mollusc ◽  
High Quality ◽  
Antifouling Paints ◽  
Laboratory Conditions ◽  
The Poor

Six cuprous oxide antifouling paints, ranging from low to high quality, were exposed to settling larvae of Spirorbis lamellosa Lamarck and S. convexis Wisely. All paints were newly immersed (up to 11 days). The poor quality paint allowed larvae to attach under laboratory conditions or in the sea, and these larvae developed the characteristic spiral tubes of the adults before dying (post-attachment mortality). Under similar conditions the intermediate and high quality paints killed the larvae before they could attach (pre-attachment mortality). These results are compared with those obtained recently for barnacle, bryozoan, and bivalve mollusc larvae.

Selected properties of particleboard made of raspberry Rubus idaeus L. lignocellulosic particles

2019 ◽  
Vol 105 ◽  
pp. 113-124
Author(s):  
ANITA WRONKA ◽  
GRZEGORZ KOWALUK
Keyword(s):  
Physical Properties ◽  
Bending Strength ◽  
Fractional Composition ◽  
Strength Criterion ◽  
Rubus Idaeus ◽  
Raw Material ◽  
Laboratory Conditions ◽  
Mechanical And Physical Properties ◽  
European Standards

Selected properties of particleboard made of raspberry Rubus idaeus L. lignocellulosic particles. The aim of the research was to confirm the possibility of using lignocellulosic particles of raspberry Rubus idaeus L. stalks as an alternative raw material in particleboard technology. Within the scope of work, it was to produce particleboards from raspberry lignocellulosic particles in laboratory conditions, and to investigate selected mechanical and physical properties of the produced boards. In addition to the aforementioned tests, the characterization of the lignocellulosic raw material used in the tests (density, bark share, fractional composition) was carried out. The tests have shown that it is possible to produce the furniture particleboards with use the lignocellulosic particles of raspberry Rubus idaeus L. To meet the requirements of the European standards for furniture panels, such particleboards must contain less than 50% of raspberry particles with density 650 kg/m3 (due to the bending strength criterion).

scholarly journals Characterization of a cAMP-Binding Protein from the Bivalve Mollusc Mytilus galloprovincialis

1995 ◽  
Vol 232 (2) ◽  
pp. 664-670 ◽  
Author(s):  
Jesus Cao ◽  
J. Ignacio Ramos-Martinez ◽  
J. Antonio Villamarin
Keyword(s):  
Mytilus Galloprovincialis ◽  
Binding Protein ◽  
Bivalve Mollusc

scholarly journals Regulation of Hypercompetence in Legionella pneumophila

2004 ◽  
Vol 186 (12) ◽  
pp. 3814-3825 ◽  
Author(s):  
Jessica A. Sexton ◽  
Joseph P. Vogel
Keyword(s):  
Legionella Pneumophila ◽  
Bacterial Species ◽  
Single Species ◽  
Great Promise ◽  
Dna Uptake ◽  
Bacterial Strains ◽  
Aerobic Growth ◽  
Laboratory Conditions ◽  
Normal Laboratory

ABSTRACT Although many bacteria are known to be naturally competent for DNA uptake, this ability varies dramatically between species and even within a single species, some isolates display high levels of competence while others seem to be completely nontransformable. Surprisingly, many nontransformable bacterial strains appear to encode components necessary for DNA uptake. We believe that many such strains are actually competent but that this ability has been overlooked because standard laboratory conditions are inappropriate for competence induction. For example, most strains of the gram-negative bacterium Legionella pneumophila are not competent under normal laboratory conditions of aerobic growth at 37°C. However, it was previously reported that microaerophilic growth at 37°C allows L. pneumophila serogroup 1 strain AA100 to be naturally transformed. Here we report that another L. pneumophila serogroup 1 strain, Lp02, can also be transformed under these conditions. Moreover, Lp02 can be induced to high levels of competence by a second set of conditions, aerobic growth at 30°C. In contrast to Lp02, AA100 is only minimally transformable at 30°C, indicating that Lp02 is hypercompetent under these conditions. To identify potential causes of hypercompetence, we isolated mutants of AA100 that exhibited enhanced DNA uptake. Characterization of these mutants revealed two genes, proQ and comR, that are involved in regulating competence in L. pneumophila. This approach, involving the isolation of hypercompetent mutants, shows great promise as a method for identifying natural transformation in bacterial species previously thought to be nontransformable.

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