scholarly journals Performance of generalist hemiparasitic Euphrasia across a phylogenetically diverse host spectrum

2021 ◽  
Author(s):  
Max R. Brown ◽  
Paloma G. P. Moore ◽  
Alex D. Twyford
Keyword(s):  
Host Spectrum

scholarly journals Nosema locustae (Protozoa, Microsporidia), a Biological Agent for Locust and Grasshopper Control

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 711
Author(s):  
Long Zhang ◽  
Michel Lecoq
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Special Role ◽  
Ancient Times ◽  
Protozoan Pathogen ◽  
Nosema Locustae ◽  
Host Spectrum ◽  
Chemical Pesticides ◽  
Orthopteran Species

Effective locust and grasshopper control is crucial as locust invasions have seriously threatened crops and food security since ancient times. However, the preponderance of chemical insecticides, effective and widely used today, is increasingly criticized as a result of their adverse effects on human health and the environment. Alternative biological control methods are being actively sought to replace chemical pesticides. Nosema locustae (Synonyms: Paranosema locustae, Antonospora locustae), a protozoan pathogen of locusts and grasshoppers, was developed as a biological control agent as early as the 1980s. Subsequently, numerous studies have focused on its pathogenicity, host spectrum, mass production, epizootiology, applications, genomics, and molecular biology. Aspects of recent advances in N. locustae show that this entomopathogen plays a special role in locust and grasshopper management because it is safer, has a broad host spectrum of 144 orthopteran species, vertical transmission to offspring through eggs, long persistence in locust and grasshopper populations for more than 10 years, and is well adapted to various types of ecosystems in tropical and temperate regions. However, some limitations still need to be overcome for more efficient locust and grasshopper management in the future.

pXO16, the large conjugative plasmid from Bacillus thuringiensis serovar israelensis displays an extended host spectrum

Plasmid ◽  
2019 ◽  
Vol 102 ◽  
pp. 46-50 ◽  
Author(s):  
Pauline Hinnekens ◽  
Klèma Marcel Koné ◽  
Nancy Fayad ◽  
Audrey Leprince ◽  
Jacques Mahillon
Keyword(s):  
Bacillus Thuringiensis ◽  
Conjugative Plasmid ◽  
Host Spectrum

scholarly journals Increase in Genogroup II.4 Norovirus Host Spectrum by CagA-Positive Helicobacter pylori Infection

2014 ◽  
Vol 210 (2) ◽  
pp. 183-191 ◽  
Author(s):  
N. Ruvoen-Clouet ◽  
A. Magalhaes ◽  
L. Marcos-Silva ◽  
A. Breiman ◽  
C. Figueiredo ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Helicobacter Pylori Infection ◽  
Host Spectrum

scholarly journals Mutational pathway maps and founder effects define the within-host spectrum of hepatitis C virus mutants resistant to drugs

2019 ◽  
Vol 15 (4) ◽  
pp. e1007701 ◽  
Author(s):  
Rubesh Raja ◽  
Aditya Pareek ◽  
Kapil Newar ◽  
Narendra M. Dixit
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Founder Effects ◽  
Mutational Pathway ◽  
Host Spectrum

Investigations of intermediate host specificity help to elucidate the taxonomic status of Trichobilharzia ocellata (Digenea: Schistosomatidae)

Parasitology ◽  
2001 ◽  
Vol 123 (1) ◽  
pp. 67-70 ◽  
Author(s):  
S. KOCK
Keyword(s):  
Intermediate Host ◽  
Host Specificity ◽  
Causative Agent ◽  
Lymnaea Stagnalis ◽  
Taxonomic Status ◽  
Snail Species ◽  
Cercarial Dermatitis ◽  
Experimental Infections ◽  
Host Spectrum ◽  
Trichobilharzia Ocellata

The avian schistosomatid Trichobilharzia ocellata plays an important role as causative agent of cercarial dermatitis of humans in Europe. In order to improve the taxonomic knowledge on this parasite, studies of miracidial chemo-orientation as well as experimental infections of different snail species were conducted using strains of T. ocellata and T. franki. Both schistosomes exhibited a high intermediate host specificity. The miracidia clearly preferred the SCW (snail-conditioned water) of the respective natural intermediate host to SCW of other sympatric snail species. T. ocellata proved to be capable of infecting Lymnaea stagnalis and Stagnicola palustris, but could not develop in Radix ovata or R. auricularia. T. franki established an infection in specimens of R. auricularia and R. ovata, but not in L. stagnalis or S. palustris. The results imply that the intermediate host spectrum of T. ocellata is limited to L. stagnalis and S. palustris. Findings of T. ocellata (or Cercaria ocellata) that originated from snails of the genus Radix are likely to have actually belonged to species such as T. franki or T. regenti. The assumption that T. szidati is synonymous to T. ocellata is also discussed.

scholarly journals Country-wide distribution of bluetongue virus with expanding host spectrum and evidence of vector competence in Hungary

2019 ◽  
Vol 63 (02) ◽  
pp. 229-234
Author(s):  
M. DOMÁN ◽  
S. MARTON ◽  
P. MALIK ◽  
K. BÁNYAI ◽  
Á. HORNYÁK
Keyword(s):  
Bluetongue Virus ◽  
Vector Competence ◽  
Wide Distribution ◽  
Host Spectrum
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