Studies on the effectiveness of the Guppy Poecilia reticulata in controlling Culex pipiens s.l. : Part II. Efficiency of predation in breeding habitats

1973 ◽  
Vol 24 (1) ◽  
pp. 79-82
Author(s):  
Takeshi KURIHARA ◽  
Manabu SASA
Author(s):  
Georgiana Victorița Tiron ◽  
Ioana Georgeta Stancu ◽  
Sorin Dinu ◽  
Florian Liviu Prioteasa ◽  
Elena Fălcuță ◽  
...  

Viruses ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1159 ◽  
Author(s):  
Alexandru Tomazatos ◽  
Stephanie Jansen ◽  
Stefan Pfister ◽  
Edina Török ◽  
Iulia Maranda ◽  
...  

The ecology of West Nile virus (WNV) in the Danube Delta Biosphere Reserve (Romania) was investigated by combining studies on the virus genetics, phylogeography, xenosurveillance and host-feeding patterns of mosquitoes. Between 2014 and 2016, 655,667 unfed and 3842 engorged mosquito females were collected from four sampling sites. Blood-fed mosquitoes were negative for WNV-RNA, but two pools of unfed Culex pipiens s.l./torrentium collected in 2014 were tested positive. Our results suggest that Romania experienced at least two separate WNV lineage 2 introductions: from Africa into Danube Delta and from Greece into south-eastern Romania in the 1990s and early 2000s, respectively. The genetic diversity of WNV in Romania is primarily shaped by in situ evolution. WNV-specific antibodies were detected for 19 blood-meals from dogs and horses, but not from birds or humans. The hosts of mosquitoes were dominated by non-human mammals (19 species), followed by human and birds (23 species). Thereby, the catholic host-feeding pattern of Culex pipiens s.l./torrentium with a relatively high proportion of birds indicates the species’ importance as a potential bridge vector. The low virus prevalence in combination with WNV-specific antibodies indicate continuous, but low activity of WNV in the Danube Delta during the study period.


1973 ◽  
Vol 24 (1) ◽  
pp. 17-21
Author(s):  
Mamoru WATANABE ◽  
Kiyoshi KAMIMURA ◽  
Kentaro KUBOTA

1971 ◽  
Vol 61 (2) ◽  
pp. 299-307 ◽  
Author(s):  
Canute P. M. Khamala

Six natural terrestrial mosquito breeding habitats were recognised in the Kano Plains of Kenya by their condition, i.e. temporary or permanent, presence or absence of emergent plants, and by the chemical and physical characteristics of their water. Between September 1968 and March 1970, 13 mosquito species were found breeding in these habitats. Most species were restricted to a few habitats; only four showed a wide occurrence, being found in at least four. Anopheles gambiae Giles and Culex annulioris Theo. exploited all six habitats, suggesting that the characteristics studied were probably not critical to their selection of a breeding site. Mansonia and Coquillettidia spp. were restricted to habitats with some plants, indicating their dependence on such vegetation for respiration and protection. The indiscriminate selection of breeding sites by disease vectors, e.g. A. gambiae, A. pharoensis Theo. and Culex pipiens fatigans Wied., is worth noting in irrigation schemes.


2020 ◽  
Vol 20 (6) ◽  
Author(s):  
Lílian Ferreira-de-Freitas ◽  
Nicholas B Thrun ◽  
Bradley J Tucker ◽  
Lauren Melidosian ◽  
Lyric C Bartholomay

Abstract Mosquitoes (Diptera: Culicidae) in the Culex pipiens complex play a key role in the transmission and therefore epidemiology of a number of human and animal pathogens globally. These mosquitoes, and sympatric species of the genus Culex Linnaeus that are not within the Cx. pipiens complex, are often considered ‘impossible’ to distinguish by morphology in the adult female stage. In the United States, this is particularly true for Culex pipiens s.l. and Culex restuans Theobald, both of which are competent vectors of West Nile virus, but likely play different roles in the transmission cycle. Therefore, we undertook an in-depth morphological evaluation of matched larval exuviae and adult specimens that revealed five useful morphological characters that are informative to distinguish Cx. pipiens s.l. from Cx. restuans in the adult stage. Herein, we provide a comprehensive review of the literature on these species of interest, and four additional, morphologically similar, Culex species, and a proposed key to adult female specimens.


2014 ◽  
Vol 114 (1) ◽  
pp. 289-295 ◽  
Author(s):  
Thomas Weitzel ◽  
Piotr Jawień ◽  
Katarzyna Rydzanicz ◽  
Elzbieta Lonc ◽  
Norbert Becker

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