Assessing larvicidal ground-based applications on Aedes albopictus by misting BTI<\/p>\n
Roger Eritja<\/strong> Mosquito control in urban environment is a complex topic. Adulticiding applications are restricted by legal issues and larviciding applications using Bacillus thuringiensis israelensis are not cost effective for container-breeding species, because larvae are scattered in many small breeding places in private ground that Assessing larvicidal ground-based applications on Aedes albopictus by misting BTI<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[30,37,59,58],"class_list":["post-135","post","type-post","status-publish","format-standard","hentry","category-11_th_march","tag-aedes","tag-albopictus","tag-bti","tag-larvicidal"],"_links":{"self":[{"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/posts\/135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/comments?post=135"}],"version-history":[{"count":3,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/posts\/135\/revisions"}],"predecessor-version":[{"id":173,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/posts\/135\/revisions\/173"}],"wp:attachment":[{"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/media?parent=135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/categories?post=135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.openstream.tv\/zanzare\/wp-json\/wp\/v2\/tags?post=135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nServei de Control de Mosquits,Consell Comarcal del Baix Llobregat, Parc Torreblanca s\/n, 08980Sant Feliu de Llobregat, Spain<\/p>\n
\ncannot be individually sprayed.
\nThe presence of Aedes albopictus in Spain since 2004 has challenged the urban mosquito control in the Baix Llobregat region, performed since 1983 by the Mosquito Control Service of the Baix Llobregat Regional Council in 19 municipalities totalling a population of 879,000 over a surface of 250 sq km. Operations
\ninclude larviciding and adulticiding in public areas, education at primary schools, raising concern by spreading information, and promoting suppression of breeding places.
\nThere are strong evidences that the majority of the breeding sites are found in private areas. However, larviciding operators either cannot legally enter the area where the breeding containers are found, or there are too many containers to individually apply Bti by hand. Though such situations can only be managed by
\nchemical adulticiding, they would be obvious candidates for distance larviciding by misting or cold fogging, provided the availability of suitable Bti formulations.
\nIn cooperation with the manufacturer Valent Biosciences Inc. it was decided to set a test on the performance of misting their Vectobac WDG formulation via a low-volume misting Martignani 748 machine, at a dose of 1 kg of powder per hectare, using adequate dilution rates to accommodate outputs of 200 to 500 liter per
\nhour.
\nAn array of five single-floor holiday cabins were used to simulate urban conditions in an abandoned camping ground. Small plastic containers ca. 250 ml each were placed in several locations of the housings up to 31 meter from the application path. All tests were duplicated and controls were used. After spraying, they were
\nbrought to the laboratory and populated with Aedes albopictus larvae to assess the mortality rates at 24 and 48 h.
\nThe tested output rates behave slightly differently but a mortality near to 100% could be obtained up to a distance of 20 meter. These promising results will be discussed along to the environmental factors to be considered, as well as further test planning.<\/p>\n","protected":false},"excerpt":{"rendered":"