scholarly journals The first record of the invasive mosquito species Aedes albopictus in Chişinӑu, Republic of Moldova, 2020

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Tatiana Șuleșco ◽  
Galina Bușmachiu ◽  
Unchana Lange ◽  
Jonas Schmidt-Chanasit ◽  
Renke Lühken

Abstract Background In Europe, Aedes albopictus is an important vector of chikungunya virus and Dirofilaria nematodes and has been involved in local autochthonous circulation of dengue and Zika viruses. Due to the ongoing spread, targeted field surveillance at potential points of entry of invasive Aedes mosquitoes was initiated by the Republic of Moldova in 2020 as part of the transboundary “Invasive Aedes Mosquitoes COST-Action project.” Methods In 2020, ovitraps were positioned at each of three locations: the border crossing to Romania in Leuşeni (Hancesti region), Chişinӑu International Airport and Chişinӑu Botanical Garden. Results A total of 188 Aedes spp. eggs were collected at the Chişinӑu International Airport between August and September 2020. Twenty-three adults reared in the laboratory were identified morphologically as Ae. albopictus (Skuse, 1895), and 12 selected specimens were confirmed by molecular barcoding of the cytochrome oxidase subunit I gene region. In addition, one adult Ae. albopictus female at the same site was caught with a manual aspirator. Conclusions This is the first documented report of Ae. albopictus in the Republic of Moldova. The presence of immature and adult stages indicates the local reproduction of the species in the country. Therefore, it is crucial to extend and strengthen surveillance of the invasive Aedes mosquitoes to prevent Ae. albopictus and other exotic mosquito species from becoming established in the Republic of Moldova. Graphical abstract

2021 ◽  
Author(s):  
Tatiana Sulesco ◽  
Galina Busmachiu ◽  
Unchana Lange ◽  
Jonas Schmidt-Chanasit ◽  
Renke Lühken

Abstract BackgroundIn Europe, Ae. albopictus is an important vector of chikungunya virus, Dirofilaria nematodes and was involved in local autochthonous circulation of dengue virus and Zika virus. Due to the ongoing spread, a targeted field surveillance at potential points-of-entries for Aedes invasive mosquitoes was initiated for the Republic of Moldova in 2020 as part of the transboundary “Aedes Invasive Mosquito COST Action project”. MethodsIn 2020, ovitraps were positioned at each of three locations: the border crossing to Romania in Leuseni (Hancesti region), Chisinau International Airport and Chisinau Botanical Garden.ResultsA total of 188 Aedes spp. eggs were collected at the Chisinau International Airport between August and September 2020. Twenty-three adults reared in the laboratory were identified morphologically as Aedes albopictus (Skuse, 1895) and twelve selected specimens were confirmed by molecular barcoding of the cytochrome oxidase subunit I gene region. In addition, one adult female of Ae. albopictus was caught at the same site with a manual aspirator from a human.ConclusionsThis is the first documented report of Ae. albopictus in the Republic of Moldova. The presence of immature and adult stages indicates the local reproduction of the species in the country. Therefore, it is crucial to extend and strengthen surveillance of the invasive Aedes mosquitoes to prevent Ae. albopictus and other exotic mosquito species from establishing in the Republic of Moldova.


2021 ◽  
Vol 13 (1(22)) ◽  
pp. 53-58
Author(s):  
Natalia Toderas ◽  

The article discusses the possibility of using representatives of the genus Fuchsia L. as outdoor ornamental plants, in summer, in container gardening. The main features of vegetative propagation of several species and hybrids of this genus have been identifi ed. The most promising ones have been identifi ed and evaluated.


Biologia ◽  
2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Natalia Munteanu ◽  
Mehtap Danismazoglu ◽  
Anna Moldovan ◽  
Ion Toderas ◽  
Remziye Nalçacioğlu ◽  
...  

AbstractThe present study was conducted to identify the microbial flora of pest weevils Sciaphobus squalidus (Gyll.), Tatianaerhynchites aequatus (L.) and Byctiscus betulae L., which may provide novel approaches for insect biocontrol. According to morphological, physiological, biochemical and molecular properties thirteen bacteria were revealed and characterized. Ten of these bacteria were identified at the species level and the rest at the genus level. Isolates were identified as Staphyloccocus haemolyticus (Ta5), Bacillus cereus (Ss1), Pseudomonas moraviensis (Ss4), Pseudomonas fluorescens (Ss2), Pantoea agglomerans (Ss3, Bb3), Klebsiella pneumoniae (Ta1, Ta3, and Ta4), Erwinia billingiae (Ta2) and Erwinia spp. (Bb1, Bb2, Bb4). This is the first record of bacterial isolates (Ss4, Ta2 and Ta5) from any insect. The pathogenicity of bacteria was tested against adults of S. squalidus, T. aequatus and B. betulae and three of them showed insecticidal activity. The highest activity, 93% had B. cereus on S. squalidus and 90% on B. betulae within five days. The maximum activities of other two isolates Ss2 and Ss4 were determined as 73% and 46% against S. squalidus. Our data can offer useful information for future investigations on bacterial agent development and implementation as insecticides in agricultural system.


2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Theodel A. Wilson-Bahun ◽  
Basile Kamgang ◽  
Arsène Lenga ◽  
Charles S. Wondji

Abstract Background Invasive mosquito species, such as Aedes albopictus in Congo can affect the distribution of native species, changing the vector composition and pattern of disease transmission. Here, we comparatively establish the geographical distribution and larval habitat preference of Ae. aegypti and Ae. albopictus and the risk of arbovirus disease outbreaks using Stegomyia indices in the city of Brazzaville, the capital of the Republic of the Congo. Methods Human dwelling surveys of water-holding containers for immature stages of Aedes was carried out in December 2017 in Brazzaville through a random cluster sampling method. A total of 268 human dwellings distributed in 9 boroughs and 27 neighbourhoods were surveyed across the city. Results Overall, 455 potential larval habitats were surveyed. Both Ae. aegypti and Ae. albopictus were collected across the city with an overall high prevalence of Ae. aegypti (53.1%) compared to Ae. albopictus (46.9%). Geographical distribution analysis showed that Ae. aegypti was more abundant (mean = 6.6 ± 1.4) in neighbourhoods located in downtown, while the abundance of Ae. albopictus was low (mean = 3.5 ± 0.6) in suburbs. Peridomestic containers, especially discarded tanks, were the most strongly colonized productive larval habitat for both mosquito species with the prevalence of 56.4% and 53.1% for Ae. aegypti and Ae. albopictus, respectively. Globally, the house index (HI), Breteau index (BI) and container index (CI) were high for Ae. aegypti (26.6%, 38.4% and 22.6%) and Ae. albopictus (33.3%, 49.6% and 26.6%) compared to the transmission risk threshold (5%, 5% and 20%) established by the WHO/PAHO. Overall, pupae-based indices (the pupae index and the pupae per person index) were not significantly different between Ae. aegypti (273.4% and 23.2%) and Ae. albopictus (228.8% and 19.5%). Conclusions The findings of this study suggest a high risk for transmission of arbovirus diseases in Brazzaville and call for an urgent need to implement vector control strategies against these vectors in the Republic of the Congo.


2021 ◽  
Vol XII (2(21)) ◽  
Author(s):  
Maria Tabara (Gorceag) ◽  
◽  
Nina Ciorchina ◽  
Mariana Trofim ◽  
Alina Cutcovschii-Muştuc ◽  
...  

A study has been carried out on the anatomical structures of the species Lycium barbarum L. and of the goji varieties from the collection of the National Botanical Garden (I) “Alexandru Ciubotaru”, grown under the pedo-climatic conditions of the Republic of Moldova. The comparative anatomical study was performed on a complex of anatomical indices: cuticle type, bristles, stomata, calcium oxalate crystals.


2018 ◽  
Vol 28 (4) ◽  
pp. 295-301
Author(s):  
MG Sharower ◽  
MA Latif

A yearlong (Jul-15 to June-16) intensive survey was conducted to document the diversity and density of different mosquito species, breeding habitats and their status at different park in Dhaka city. A total of 11 species of mosquito were identified from the six study areas. The recorded species were An. annularis, An. culicifacies, Ae. albopictus, Ae. aegypti, Ar. subalbatus, Cx. fuscocephala, Cx. quinquefasciatus, Cx. tritaeniorhynchus, Mn. annulifera, Mn. uniformis, Tx. splendidus. Aedes albopictus (38.18%) and Ar. subalbatus (37.47%) were the predominant mosquito species followed by Cx. quinquefasciatus. Others species were found in moderate percentage. Lowest density of Cx. fuscocephala (0.6%) was recorded among the collected mosquito species from the different study area. The highest percentages of mosquito were found in Botanical garden (28.68%) followed by Ramna park, Zia uddyan, Baldha garden, Suhrawardy uddyan, and Osmani uddyan (6.67%). Fifteen different larval habitats were found in the study areas. Majority of the mosquito species was found to breed in pond. High density of Ae. albopictus mosquito were found in all study areas, which is the secondary vector of dengue viruses. Principal dengue vector mosquito, Ae. aegypti were found only in Baldha garden. Ar. subalbatus was also a dominant mosquito species in the entire site.Progressive Agriculture 28 (4): 295-301, 2017


2019 ◽  
Author(s):  
Elena Iordosopol ◽  

The article communicates about the first record in the conditions of 20162018 in the Republic of Moldova on the young plum culture of the species of European rust erinosis Aculops berochensis Keif in the Stenlley and Cacanska rana varieties. Several ways of the pest attacking plum development stages have been observed. It was determined that the highest degree of attack was manifested on the Stenlley variety at the young shoots, and at Cacanska rana leaves. There are 7 species of beneficial insects that regulate numerical density.


2021 ◽  
Vol XII (2(21)) ◽  
Author(s):  
Ion Rosca ◽  
◽  
◽  

The Botanical Garden was originally founded as a botanical sector in 1950, and in 1965, it was allocated a new territory of 104 ha, on which its construction began in 1968-1970. In 1975, the Botanical Garden obtained the status of scientific institution. The research activity is aimed at the study of the flora and the plant resources the Republic of Moldova, the use of valuable species for the national economy, the development of the Botanical Garden as a centre of environmental education and the popularization of landscape architecture in rural and urban areas.


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