The Migration of Insect Vectors of Plant and Animal Viruses

2006 ◽  
pp. 453-517 ◽  
Author(s):  
D.R. Reynolds ◽  
J.W. Chapman ◽  
R. Harrington
Keyword(s):  
Insect Vectors

Insect vectors and their relationship with sustainable development indicators in neighborhoods of Natal, Northeastern Brazil

Gaia Scientia ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 182-194
Author(s):  
Paulo Sérgio Fagundes Araujo ◽  
Maria Cristiana da Silva Souto ◽  
Paulo Roberto Medeiros de Azevedo ◽  
Maria de Fatima Freire de Melo Ximenes
Keyword(s):  
Sustainable Development ◽  
Social Indicators ◽  
Northeastern Brazil ◽  
Insect Vectors ◽  
Sand Flies ◽  
High Positive Correlation ◽  
Breeding Sites ◽  
Development Indicators ◽  
Sustainable Development Indicators ◽  
Sustainability Index

This study aimed to correlate sustainable development indicators with the occurrence of mosquitoes from the genus Aedes and phlebotominae sand flies, vectors of dengue fever, American visceral leishmaniasis and American tegumentary leishmaniasis, in order to establish a relationship between infestation indices and sustainability conditions in southern and northern neighborhoods of Natal, Brazil, adjacent to environmental protection zones 5 and 9, respectively. Data were obtained on Aedes aegypti and A. albopictus breeding sites and captures of phlebotominae sand flies of the genus Lutzomyia in the study area between 2006 and 2008, from the Center of Zoonosis Control of the Municipal Health Secretariat, and correlated with environmental and social indicators. Factorial analysis was applied to transform these indicators into a sustainability index for each neighborhood studied (Neighborhood Sustainability Index – NSI). Relating these indices with the occurrence of insect vectors at these sites shows a high positive correlation between SID and the Breteau index of A. aegypti (p=0.028) and with the index of household infestation by phlebotominae sand flies (p=0.01). This reveals a pattern allowing the association of sustainability conditions in the study areas with the occurrence of these insects. Analyses demonstrate the occurrence of a larger number of A. aegypti breeding sites and higher indices of household infestation by phlebotominae sand flies in neighborhoods with lower sustainability indices. Knowledge of the relationship between sustainable development indicators and the occurrence of zoonotic vectors may contribute to public health programs as well as to a restructuring of public policies in the study areas.

Identification of candidate insect vectors of Grapevine red blotch virus by means of an artificial feeding diet

2021 ◽  
Author(s):  
Dieter Kahl ◽  
José Ramón Úrbez-Torres ◽  
Joel Kits ◽  
Miranda Hart ◽  
Amanda Nyirfa ◽  
...  
Keyword(s):  
Artificial Feeding ◽  
Insect Vectors

Tettigoniella viridis and Clovia conifer are potential insect vectors of sugarcane white leaf phytoplasma

2021 ◽  
Author(s):  
Wen-Feng Li ◽  
Xiao-Yan Wang ◽  
Xiao-Yan Cang ◽  
Rong-Yue Zhang ◽  
Hong-Li Shan ◽  
...  
Keyword(s):  
Insect Vectors ◽  
White Leaf ◽  
Sugarcane White Leaf ◽  
Sugarcane White Leaf Phytoplasma

scholarly journals Surveying Potential Vectors of Apple Proliferation Phytoplasma: Faunistic Analysis and Infection Status of Selected Auchenorrhyncha Species

Insects ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Stefanie Fischnaller ◽  
Martin Parth ◽  
Manuel Messner ◽  
Robert Stocker ◽  
Christine Kerschbamer ◽  
...  
Keyword(s):  
New Records ◽  
Regional Scale ◽  
Insect Vectors ◽  
Infection Status ◽  
Apple Proliferation ◽  
Population Densities ◽  
South Tyrol ◽  
Candidatus Phytoplasma Mali ◽  
Cacopsylla Melanoneura

Apple proliferation (AP) is one of the economically most important diseases in European apple cultivation. The disease is caused by the cell-wall-less bacterium ’ Candidatus Phytoplasma mali’, which is transmitted by Cacopsylla picta (Foerster) and Cacopsylla melanoneura (Foerster) (Hemiptera: Psylloidea). In South Tyrol (Italy), severe outbreaks were documented since the 1990s. Infestation rates of AP do not always correlate with the population densities of the confirmed vectors, implying the presence of other, so far unknown, hemipterian vectors. By elucidating the species community of Auchenorrhyncha (Insecta: Hemiptera) at a regional scale, more than 31,000 specimens were captured in South Tyrolean apple orchards. The occurrence of 95 species was confirmed, whereas fourteen species are new records for this territory. Based on the faunistical data, more than 3600 individuals out of 25 species were analyzed using quantitative PCR to assess the presence of AP phytoplasma. The pathogen was sporadically detected in some individuals of different species, for example in Stictocephala bisonia Kopp and Yonk (Hemiptera: Membracidae). However, the concentration of phytoplasma was much lower than in infected C. picta and C. melanoneura captured in the same region, confirming the role of the latter mentioned psyllids as the main insect vectors of AP- phytoplasma in South Tyrol.

scholarly journals Plant begomoviruses subvert ubiquitination to suppress plant defenses against insect vectors

2019 ◽  
Vol 15 (2) ◽  
pp. e1007607 ◽  
Author(s):  
Ping Li ◽  
Chao Liu ◽  
Wen-Hao Deng ◽  
Dan-Mei Yao ◽  
Li-Long Pan ◽  
...  
Keyword(s):  
Plant Defenses ◽  
Insect Vectors

Virus Decline of Strawberry in California and the Role of Insect Vectors and Associated Viruses

2015 ◽  
Vol 16 (4) ◽  
pp. 211-215 ◽  
Author(s):  
Surendra K. Dara
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Trialeurodes Vaporariorum ◽  
Current Status ◽  
Insect Vectors ◽  
The Past ◽  
Disease Vector ◽  
Flower Thrips ◽  
Purple Coloration

Greenhouse white fly, Trialeurodes vaporariorum (Westwood); western flower thrips, Frankliniella occidentalis (Pergande); and strawberry aphid, Chaetosiphon fragaefolii (Cockerell), are common pests of strawberries in California and are vectors of one or more viruses. Most of the viruses transmitted by these vectors do not cause symptoms on strawberry when the infection occurs individually. However, when one of the viruses (Beet pseudoyellows virus or Strawberry pallidosis-associated virus) transmitted by T. vaporariorum is present along with one of the viruses transmitted by F. occidentalis, C. fragaefolii, or other sources, it results in a virus decline of strawberry, which can cause significant crop losses. Stunted root and plant growth, purple coloration of foliage, and dieback of the plant are some of the symptoms associated with virus decline. Increases in T. vaporariorum infestations during the past few years significantly elevated the risk of whitefly as a crop pest and a disease vector. This article reviews virus decline of strawberry, symptoms of infection, and the current status of insect vectors in California strawberries. Accepted for publication 17 November 2015. Published 20 November 2015.

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