{"id":3076,"date":"2015-05-22T13:57:16","date_gmt":"2015-05-22T12:57:16","guid":{"rendered":"http:\/\/international-pest-control.com\/?p=3076"},"modified":"2015-05-22T13:57:16","modified_gmt":"2015-05-22T12:57:16","slug":"biological-controls-bud-galling-wasp-assessed","status":"publish","type":"post","link":"https:\/\/international-pest-control.com\/wordpress\/biological-controls-bud-galling-wasp-assessed\/","title":{"rendered":"Biological Controls: Bud-galling Wasp Assessed"},"content":{"rendered":"

The bud-galling wasp Trichilogaster acaciaelongifoliae<\/em> could be successfully introduced as a biological control agent of the invasive alien plant Acacia longifolia<\/em> in coastal areas of Portugal. Its introduction could, however, have an impact on A. longifolia<\/em> and another acacia species, A. floribunda<\/em>, where these are cultivated as ornamentals. These are the main findings of EFSA\u2019s assessment of the risks to plant health from the proposed release of the wasp.<\/p>\n

Establishment of T. acaciaelongifoliae<\/em> in Portugal would be likely because: host plants are present; the organism has been successfully established in South Africa; and environmental conditions in the proposed release area are similar to those in its native home of Australia. However, there is some uncertainty as there is no record of the wasp having ever established in the northern hemisphere.<\/p>\n

Once established, the wasp would have a \u201cmassive\u201d effect on invasive A. longifolia<\/em>, reducing the growth, reproductive potential and ultimately population density of the plant, EFSA\u2019s plant health experts concluded. It would also significantly reduce the negative effects of A. longifolia<\/em> on biodiversity in the targeted area.<\/p>\n

It is possible that the wasp could spread outside the target area through trade in ornamental A. longifolia<\/em> and A. floribunda<\/em>. However, these species are grown in a limited number of nurseries in Europe compared to acacia species which are not hosts of T. acaciaelongifoliae.<\/em><\/p>\n

There would be little impact on populations of other invasive or ornamental acacia species because of the wasp\u2019s high degree of specificity \u2013 it survives and reproduces only in A. longifolia<\/em> and the closely related A. floribunda<\/em> \u2013 although there may be short-lived spill-overs to other species. One native wild species \u2013 the broom Cytisus striatus<\/em> \u2013 and one ornamental species \u2013 Acacia retinodes<\/em> \u2013 need to be further investigated be cause the currently available data on their host status for the wasp are inconclusive.<\/p>\n

As with the release of other biological control agents, there would be no way of preventing the spread of T. acaciaelongifoliae<\/em> to other areas. However, spread would be limited by a number of factors, such as the fragmented nature of host populations outside Portugal, and the fact that the female wasps die unless they find a host plant within three days of hatching.<\/p>\n

The European Food Safety Authority (EFSA) was asked to carry out an assessment of the risk of establishment and spread of T. acaciaelongifoliae<\/em> in the EUafter Portugal informed the European Commission (EC) that it was considering using the organism to control the spread of A. longifolia<\/em> in coastal sand dune areas. The wasp, which is native to Australia, was released intentionally in South Africa in 1982-1983 to control A. longifolia<\/em> and has successfully established and spread there. Seed set on affected hosts has subsequently fallen by up to 95%.
\nOriginal Source:<\/strong> www.efsa.europa.eu\/en\/efsajournal\/pub\/4079.htm<\/p>\n

Published in<\/strong> World Food Regulation Review May 2015 issue
\nSubscribers to World Food Regulation Review<\/a> are provided with essential coverage of new laws, regulations, codes of practice and government actions worldwide. Each issue gives access to news and developments in the regulation and control of foodstuffs, such as safety, agriculture, nutritional labelling regulations, food additives and pesticide residues<\/p>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

The bud-galling wasp Trichilogaster acaciaelongifoliae could be successfully introduced as a biological control agent of the invasive alien plant Acacia longifolia in coastal areas of Portugal. Its introduction could, however, have an impact on A. longifolia and another acacia species, A. floribunda, where these are cultivated as ornamentals. These are the main findings of EFSA\u2019s […]<\/p>\n","protected":false},"author":1,"featured_media":2144,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[9],"tags":[290,182,291,292,293,177,294],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/international-pest-control.com\/wordpress\/wp-content\/uploads\/2014\/04\/wfrr_sq150x150.jpg","_links":{"self":[{"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/posts\/3076"}],"collection":[{"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/comments?post=3076"}],"version-history":[{"count":5,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/posts\/3076\/revisions"}],"predecessor-version":[{"id":3081,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/posts\/3076\/revisions\/3081"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/media\/2144"}],"wp:attachment":[{"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/media?parent=3076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/categories?post=3076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/international-pest-control.com\/wordpress\/wp-json\/wp\/v2\/tags?post=3076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}