The bionomics of Lankesteria culicis and Aedes aegypti

Further study on Ascogregarina culicis in temperate Argentina: Prevalence and intensity in Aedes aegypti larvae and pupae

“…Barrett et al, 1971;Beier et al, 1995;Passos and Tadei, 2008). Laboratory studies suggested that high water temperatures reduce trophozoite survival (Mourya et al, 2004) and oocyst viability (McCray et al, 1970). In the same way, long periods of dryness could have a central role on oocyst viability (Roychoudhury and Kobayashi, 2006) and similar responses occur in Ascogregarina taiwanensis and Ascogregarina barreti infecting Aedes albopictus and Ochlerotatus triseriatus, respectively (Chen and Yang, 1996;Van Rhein et al, 2000).…”

Prevalence and seasonality of Ascogregarina culicis (Apicomplexa: Lecudinidae) in natural populations of Aedes aegypti (Diptera: Culicidae) from temperate Argentina

“…Finally, each gametocyst produces a number of oocysts that mature in the Malpighian tubules of mosquito adults. The oocysts are released when the mosquitoes defecates, dies or during oviposition in the larval development sites (Beier, 1983;Chen, 1999;McCray et al, 1970;Reyes-Villanueva et al, 2001). The most studied infections are those of Ascogregarina culicis in Aedes aegypti, Ascogregarina taiwanensis in Aedes albopictus, and Ascogregarina barretti in Ochlerotatus (formerly, Aedes) triseriatus.…”

“…Many studies deal with infection rates and pathogenicity of Ascogregarina spp., and its potential role as biological agent to control mosquito populations (Barrett et al, 1971;Comiskey et al, 1999a;Fukuda et al, 1997;García et al, 1994;McCray et al, 1970;Munstermann and Wesson, 1990;Reyes-Villanueva et al, 2003;Sulaiman, 1992). Despite this main interest on Ascogregarina parasites, some other aspects of veterinary and medical concern were studied; e.g., the eVect of gregarine infection on DiroWlaria immitis transmission (Beier, 1983;Comiskey et al, 1999b;Nayar and Knight, 1999), as well as on the maintenance of Chikungunya virus in nature (Moury et al, 2003).…”

Ascogregarina (Apicomplexa: Lecudinidae): An overview of its distribution and pathogenicity on Aedes aegypti and Ae. albopictus development

“…aegypti, since a strain of A. culicis originating from the United States is considered non-pathogenic (BARRETT, 1968). In observations made by McCray et al (1970) in Georgia, USA, A. culicis did not affect larval development, size, mortality, pupal weight and adult emergence of Ae. aegypti.…”

“…When mosquito larvae are infected, the epithelial cells of the intestine extend their nucleus and can be destroyed by the parasites (KRAMAR, 1952;SANDERS;POINAR, 1973). Moreover, Malpighian tubules in adults become swollen (WENYON, 1911) and their cells become distorted and damaged (BARRETT, 1968;MCCRAY et al, 1970;SANDERS;POINAR, 1973). Furthermore, Barrett (1968) showed that the extent of this damage is proportional to the infection rate of parasites.…”