Molecular detection of a novel totivirus from golden shiner (Notemigonus crysoleucas) baitfish in the USA

2016 ◽  
Vol 161 (8) ◽  
pp. 2227-2234 ◽  
Author(s):  
Sunil Kumar Mor ◽  
Nicholas Benjamin Daniel Phelps



2010 ◽  
Vol 213 (8) ◽  
pp. 1309-1319 ◽  
Author(s):  
M. J. McHenry ◽  
K. B. Michel ◽  
W. Stewart ◽  
U. K. Muller


2010 ◽  
Vol 124 (3) ◽  
pp. 268 ◽  
Author(s):  
Jean-François Desroches

In 2005 and 2009, two species of Cyprinidae, the Northern Redbelly Dace, Phoxinus eos, and the Golden Shiner, Notemigonus crysoleucas, were collected northeast of their know range, in Québec. These new records, indeed range extensions, are presented here with a short discussion on the fish fauna of the area and on the possibility of introductions.En 2005 et en 2009, deux espèces de Cyprinidés, soit le Méné ventre-rouge, Phoxinus eos, et le Méné jaune, Notemigonus crysoleucas, ont été capturées au nord-est de leur répartition connue au Québec. Ces nouvelles mentions, qui constituent des extensions d'aire, sont ici présentées de même qu'une courte discussion sur l'ichtyofaune de la région et la possibilité d'introductions.





2020 ◽  
Author(s):  
Armelle Marais ◽  
Sergio Murolo ◽  
Chantal Faure ◽  
Yoann Brans ◽  
Clement Larue ◽  
...  

Although the chestnut mosaic disease (ChMD) was described several decades ago, its etiology is still not elucidated. Here, using classical approaches in combination with high throughput sequencing (HTS) techniques, we identify a novel Badnavirus that is a strong etiological candidate for ChMD. Two disease sources from Italy and France were submitted to HTS-based viral indexing. Total RNAs were extracted, ribodepleted and sequenced on an Illumina NextSeq500 (2x150 or 2x 75 nt). In each source, we identified a single contig of about 7.2 kilobases that corresponds to a complete circular viral genome and shares homologies with various badnaviruses. The genomes of the two isolates have an average nucleotide identity of 90.5% with a typical badnaviral genome organization comprising three open reading frames. Phylogenetic analyses and sequence comparisons show that this virus is a novel species for which we propose the name Chestnut mosaic virus (ChMV). Using a newly developed molecular detection test, we systematically detected the virus in symptomatic graft-inoculated indicator plants (chestnut and American oak), as well in chestnut trees presenting typical ChMD symptoms in the field (100% and 87% in France and Italy surveys, respectively). Datamining of publicly available chestnut SRA transcriptomic data allowed the reconstruction of two additional complete ChMV genomes from two Castanea mollissima sources from the USA, as well as ChMV detection in C. dentata from the USA. Preliminary epidemiological studies, performed in France and in Central Eastern Italy, showed that ChMV has a high incidence in some commercial orchards, with a low within-orchard genetic diversity.







1989 ◽  
Vol 46 (5) ◽  
pp. 810-817 ◽  
Author(s):  
Mark R. S. Johannes ◽  
Donald J. McQueen ◽  
Tom J. Stewart ◽  
John R. Post

A winterkill at Lake St. George, Ontario eliminated most of the piscivorous fish and some of the planktivores and also influenced zooplankton community structure. This disturbance and the subsequent recovery of the populations provided the opportunity to evaluate potential impacts of food and predators on the population structure and abundance of the dominant planktivore; the golden shiner (Notemigonus crysoleucas). interpretation of the 8-yr data set suggested that there was a positive relationship between adult golden shiner condition and zooplankton abundance, but that this did not translate into a significant stock–recruitment relationship between female numbers and young-of-the-year (YOY) recruitment. Also, there was no significant relationship between golden shiner survival and zooplankton abundance. However, there were significant negative correlations between YOY and adult golden shiner survival estimates and predator abundances. We conclude that at Lake St. George, golden shiner recruitment and population density is strongly influenced by predator density and is not influenced by food abundance.



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