Modelling the distributions and spatial coincidence of bluetongue vectors Culicoides imicola and the Culicoides obsoletus group throughout the Iberian peninsula

2008 ◽  
Vol 22 (2) ◽  
pp. 124-134 ◽  
Author(s):  
C CALVETE ◽  
R ESTRADA ◽  
M. A MIRANDA ◽  
D BORRÁS ◽  
J. H CALVO ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Obsoletus Group ◽  
Culicoides Obsoletus ◽  
Culicoides Imicola

scholarly journals Vector Competence of Italian Populations of Culicoides for Some Bluetongue Virus Strains Responsible for Recent Northern African and European Outbreaks

Viruses ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 941 ◽  
Author(s):  
Valentina Federici ◽  
Maria Goffredo ◽  
Giuseppe Mancini ◽  
Michela Quaglia ◽  
Adriana Santilli ◽  
...  
Keyword(s):  
Bluetongue Virus ◽  
Vector Competence ◽  
Oral Infection ◽  
Balearic Islands ◽  
Rt Pcr ◽  
Vector Species ◽  
Vaccination Programs ◽  
Culicoides Obsoletus ◽  
Culicoides Imicola ◽  
Virus Strains

The distribution of Bluetongue virus (BTV) in Europe can be represented by two distinct and interconnected epidemiological systems (episystems), each characterized by different ecological characteristics and vector species. This study investigated the vector competence of Italian populations of Culicoides imicola and Culicoides obsoletus/scoticus to some representative BTV strains after artificial oral infection. The BTV strains were selected according to their ability to spread to one or both episystems and included BTV-4 ITA, responsible of the recent Italian and French BTV-4 outbreaks; the BTV-2 strain which caused the first BTV incursion in Italy, Corsica, and Balearic Islands; BTV-4 MOR, responsible for the epidemic in Morocco; and BTV-8, the strain which spread through Europe between 2006 and 2008. Blood-soaked cotton pledgets and Hemotek membrane feeder using Parafilm® membrane were used to artificially feed midges. For each population/strain, recovery rates (positive/tested heads) were evaluated using serogroup- and serotype-specific RT-PCR. The trial demonstrated that, except for the Abruzzo population of C. obsoletus/C. scoticus, which was refractory to BTV-4 MOR infection, all the investigated Culicoides populations are susceptible to the selected BTV strains and that, if prompt vaccination programs and restriction measures had not been implemented, BTV-2 and BTV-4 MOR could have spread all over Europe.

Sensitivity of Culicoides obsoletus (Meigen) (Diptera: Ceratopogonidae) to deltamethrin determined by an adapted WHO standard susceptibility test

Parasitology ◽  
2013 ◽  
Vol 141 (4) ◽  
pp. 542-546 ◽  
Author(s):  
R. DEL RÍO ◽  
R. VENAIL ◽  
C. CALVETE ◽  
C. BARCELÓ ◽  
T. BALDET ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
World Health Organization ◽  
Bluetongue Virus ◽  
Susceptibility Test ◽  
World Health ◽  
Biting Midges ◽  
Culicoides Obsoletus ◽  
Culicoides Imicola ◽  
Health Organization ◽  
Who Susceptibility Test

SUMMARYBluetongue is a disease of major economic concern in Europe. Its causative agent, bluetongue virus (BTV), is transmitted by several Culicoides species (mainly Culicoides imicola and Culicoides obsoletus in Europe). The application of insecticides on animals may reduce transmission of BTV, however, no formulation is currently licensed specifically against Culicoides midges. The present study assesses the susceptibility of C. obsoletus to deltamethrin using an adapted World Health Organization (WHO) susceptibility test. Midges were exposed to different dosages of deltamethrin for 1 h, and mortality after 1 h and 24 h was recorded. Results indicated that deltamethrin is highly toxic to C. obsoletus since a dose of 1·33×10−4% was enough to kill 50% of the population (LD50) in 24 h. The deltamethrin concentration needed to kill 90% of the population (LD90) was 5·55×10−4%. The results obtained in the present work could help to create a system that can be used to assess insecticide resistance and susceptibility of Culicoides biting midges.

Two New Species of Aira (Poaceae) from the Iberian Peninsula and the Balearic Islands

2020 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Llorenç Sáez ◽  
Javier López-Alvarado ◽  
Pere Fraga ◽  
Regina Berjano ◽  
M. Ángeles Ortiz ◽  
...  
Keyword(s):  
Risk Assessment ◽  
New Species ◽  
Iberian Peninsula ◽  
Diploid Species ◽  
Balearic Islands ◽  
Similar Species ◽  
Chromosome Counts ◽  
Two New Species

Abstract—Two new diploid species, Aira minoricensis and Aira hercynica, are described and illustrated, along with chromosome counts, risk assessment, distribution and habitat, phenology, and comparisons with morphologically similar species. A comparative table and a key for the species of Aira for the Iberian Peninsula and the Balearic Islands are provided to assist in the identification of these overlooked species, and their relationships to other taxa are discussed.

Una nueva localidad almeriense de Phyllariopsis purpurascens (C. Agardh) Henry et South

2005 ◽  
Vol 30 ◽  
pp. 176
Author(s):  
Diego Moreno ◽  
Julio De la Rosa ◽  
Pedro Sánchez Castillo ◽  
Antonio Flores-Moya
Keyword(s):  
Iberian Peninsula ◽  
Geographical Distribution ◽  
New Record

A new record of Phyllariopsis purpurascens (C. Agardh) Henry et South from AlmeríaPalabras clave. Phyllariopsis, corología, Península Ibérica.Key words. Phyllariopsis, geographical distribution, Iberian Peninsula.

Epilobium ciliatum Rafin. (Onagraceae), una nueva adventicia potencialmente invasora en la Península Ibérica. Epilobium ciliatum Rafin. (Onagraceae), a new adventive species potentially invasive in the Iberian Peninsula

2012 ◽  
Vol 37 ◽  
pp. 179-184
Author(s):  
José Luis Fernández Alonso
Keyword(s):  
Iberian Peninsula ◽  
Key Words ◽  
Vascular Flora ◽  
Adventive Species ◽  
Palabras Clave ◽  
Península Ibérica

Epilobium ciliatum Rafin. (Onagraceae), a new adventive species potentially invasive in the Iberian Peninsula Palabras clave. Epilobium ciliatum, especies adventicias, Flora vascular, Onagraceae, Península Ibérica. Key words. Epilobium ciliatum, Iberian Peninsula, adventive species, Onagraceae, vascular flora

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