scholarly journals Defoliation of common ragweed by Ophraella communa beetle does not affect pollen allergenicity in controlled conditions

2016 ◽  
Vol 151 (6) ◽  
pp. 1094-1100 ◽  
Author(s):  
S. T. E. Lommen ◽  
S. Ciappetta ◽  
A. Ghiani ◽  
R. Asero ◽  
R. Gentili ◽  
...  
Keyword(s):  
Common Ragweed ◽  
Controlled Conditions ◽  
Ophraella Communa ◽  
Pollen Allergenicity

Control efficiency of leaf beetle,Ophraella communa, on the invasive common ragweed,Ambrosia artemisiifolia, at different growing stages

2011 ◽  
Vol 21 (9) ◽  
pp. 1049-1063 ◽  
Author(s):  
Jian-Ying Guo ◽  
Zhong-Shi Zhou ◽  
Xing-Wen Zheng ◽  
Hong-Song Chen ◽  
Fang-Hao Wan ◽  
...  
Keyword(s):  
Leaf Beetle ◽  
Ambrosia Artemisiifolia ◽  
Common Ragweed ◽  
Control Efficiency ◽  
Ophraella Communa

scholarly journals Spread of the ragweed leaf beetle, Ophraella communa LeSage, 1986 (Coleoptera Chrysomelidae), in Piedmont Region (northwestern Italy)

2014 ◽  
pp. 17-30 ◽  
Author(s):  
Giovanni Bosio ◽  
Viola Massobrio ◽  
Catarina Chersi ◽  
Giovanni Scavarda ◽  
Shawn Clark
Keyword(s):  
Biological Control ◽  
Leaf Beetle ◽  
Ambrosia Artemisiifolia ◽  
Native Range ◽  
Biological Cycle ◽  
Field Surveys ◽  
Common Ragweed ◽  
Ophraella Communa ◽  
The 19Th Century ◽  
Piedmont Region

Common ragweed, Ambrosia artemisiifolia L., one of the most dangerous invasive species for its high allergenic pollen production, has been spreading in Europe since the 19th century but has not until now recruited any effective natural enemy. In its native range, North america, many insects and fungi are recorded feeding or developing on this weed, reducing common ragweed impact on human health and habitats. Some of these organisms, specific or oligophagous on A. artemisiifolia, are considered promising agents for the biological control of this weed, and in some cases they have already been introduced in other continents. Among these species, the leaf beetle Ophraella communa LeSage (Coleoptera: Chrysomelidae) was found at the beginning of august 2013 attacking common ragweed near a nursery in Galliate (Novara province - piedmont Region). Field surveys were carried out from august to November in various piedmont counties to document the spread of this recently introduced galerucine species. Data are reported regarding the leaf beetle’s morphology, biological cycle, spread, hosts and natural enemies in the new range. Prospects for the biological control of common ragweed in Europe are also discussed.

Development of a Rapid Survey Method of Sampling and Analysis for Asbestos in Ambient Air

1972 ◽  
Vol 30 ◽  
pp. 630-631 ◽  
Author(s):  
R. E. Heffelfinger ◽  
C. W. Melton ◽  
D. L. Kiefer ◽  
W. M. Henry ◽  
R. J. Thompson
Keyword(s):  
Neutron Activation ◽  
Ambient Air ◽  
Survey Method ◽  
Potential Hazard ◽  
Transmission Microscopy ◽  
Comparative Analyses ◽  
Asbestos Fibers ◽  
Controlled Conditions ◽  
Unequivocal Identification ◽  
Identification And Quantification

A methodology has been developed and demonstrated which is capable of determining total amounts of asbestos fibers and fibrils in air ranging from as low as fractional nanograms per cubic meter (ng/m3) of air to several micrograms/m3. The method involves the collection of samples on an absolute filter and provides an unequivocal identification and quantification of the total asbestos contents including fibrils in the collected samples.The developed method depends on the trituration under controlled conditions to reduce the fibers to fibrils, separation of the asbestos fibrils from other collected air particulates (beneficiation), and the use of transmission microscopy for identification and quantification. Its validity has been tested by comparative analyses by neutron activation techniques. It can supply the data needed to set emissions criteria and to serve as a basis for assessing the potential hazard for asbestos pollution to the populace.

AMORPHIZATION OF NiZr INTERFACES UNDER CONTROLLED CONDITIONS OF DEFORMATION AND TEMPERATURE

1990 ◽  
Vol 51 (C4) ◽  
pp. C4-241-C4-247 ◽  
Author(s):  
S. MARTELLI ◽  
G. MAZZONE ◽  
A. MONTONE ◽  
M. VITTORI ANTISARI
Keyword(s):  
Controlled Conditions

Mass Initial Rearing of Burbot Lota Lota (L.) Larvae Under Controlled Conditions

2009 ◽  
Vol 24 (1) ◽  
pp. 76-84 ◽  
Author(s):  
Daniel Żarski ◽  
Wojciech Sasinowski ◽  
Dariusz Kucharczyk ◽  
Maciej Kwiatkowski ◽  
Sławomir Krejszeff ◽  
...  
Keyword(s):  
Lota Lota ◽  
Controlled Conditions

The Influence of Stocking Density On Survival and Growth of Buenos Aires Tetra (Hemigrammus Caudovittatus) Larvae Reared Under Controlled Conditions

2008 ◽  
Vol 23 (4) ◽  
pp. 881-887 ◽  
Author(s):  
Krzysztof Kupren ◽  
Dariusz Kucharczyk ◽  
Maja Prusińska ◽  
Sławomir Krejszeff ◽  
Katarzyna Targońska ◽  
...  
Keyword(s):  
Buenos Aires ◽  
Stocking Density ◽  
Controlled Conditions ◽  
Survival And Growth

Reproduction of Buenos Aires Tetra (Hemigrammus Caudovittatus) Under Controlled Conditions

2008 ◽  
Vol 23 (4) ◽  
pp. 858-865 ◽  
Author(s):  
Dariusz Kucharczyk ◽  
Katarzyna Targońska ◽  
Maja Prusińska ◽  
Sławomir Krejszeff ◽  
Krzysztof Kupren ◽  
...  
Keyword(s):  
Buenos Aires ◽  
Controlled Conditions

Symptoms Development as Tools to Differentiate Dorizontal Resistance in Sunflower

Agrotek ◽  
2018 ◽  
Vol 2 (6) ◽  
Author(s):  
Cipta Meliala ◽  
Felicity Fear ◽  
Denis Tourvieille de Labrouhe
Keyword(s):  
Downy Mildew ◽  
Natural Infection ◽  
Resistance Mechanism ◽  
Good Method ◽  
Vegetative Stage ◽  
Horizontal Resistance ◽  
Symptom Development ◽  
Plasmopara Halstedii ◽  
Controlled Conditions ◽  
Symptom Progression

Downy mildew symptoms caused by Plasmopara halstedii encountered in sunflower plantation are varied. This variation may be related to the resistance mechanism presented by plant to the invasion of the fungus. Our objectives were firstly is to evaluate symptom development after fungus race 710 inoculation on some vegetative stage of susceptible hybrid. Second objective is to evaluate the reaction some sunflower genotypes after fungus inoculation. The study was conducted under controlled conditions or under netting cages in the field. The development of downy mildew symptoms were affected by all factors studied. Shoot inoculation may present a good method to produce downy mildew symptom similar to the natural infection. Downy mildew symptom progression may be used to screen a genotype with a horizontal resistance.

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