Difference between revisions of "Trioza apicalis"
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[[File:Trioza apicalis1.JPG|250px|thumb|''Trioza apicalis'' (click on image to enlarge it)<br/>Author: Lars-Arne Høgetveit, Norsk Landbruksrådgiving Viken]] | [[File:Trioza apicalis1.JPG|250px|thumb|''Trioza apicalis'' (click on image to enlarge it)<br/>Author: Lars-Arne Høgetveit, Norsk Landbruksrådgiving Viken]] | ||
<font color="#800000">'''''Trioza apicalis'''''</font> Förster, 1848 - (carrot psyllid) | <font color="#800000">'''''Trioza apicalis'''''</font> Förster, 1848 - (carrot psyllid) | ||
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| + | This psyllid is an important pest of carrots, especially in northern Europe. Infestations can result in total crop losses. The symptoms caused by the psyllid include leaf curling, yellowish and purplish discoloration of the leaves, stunting as well as smaller, deformed and tougher carrots. The psyllid is associated with haplotype C of [[Liberibacter solanacearum|"''Candidatus'' Liberibacter solanacearum"]] and apparently transmits this bacterial disease to carrots. A survey in the carrot growing areas of Norway found up to half of all psyllids carrying the disease in some areas ([[Journal of Plant Pathology (2014) 96, 397-402|Munyaneza et al., 2014]]). | ||
In autumn, the adults migrate to conifers, especially Norway spruce, for overwintering. However, psyllid populations also exist in areas without conifer forests. They move back to carrots in spring where they lay eggs and breed. | In autumn, the adults migrate to conifers, especially Norway spruce, for overwintering. However, psyllid populations also exist in areas without conifer forests. They move back to carrots in spring where they lay eggs and breed. | ||
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For a review see [[Plant Protection Science (2011) 47, 68-78|Láska, 2011]]. | For a review see [[Plant Protection Science (2011) 47, 68-78|Láska, 2011]]. | ||
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<gallery widths=200px caption="Images of Trioza apicalis symptoms on carrots (Lars-Arne Høgetveit, Norsk Landbruksrådgiving Viken - click to enlarge)"> | <gallery widths=200px caption="Images of Trioza apicalis symptoms on carrots (Lars-Arne Høgetveit, Norsk Landbruksrådgiving Viken - click to enlarge)"> | ||
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File:Trioza apicalis5.JPG | File:Trioza apicalis5.JPG | ||
</gallery> | </gallery> | ||
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[[Category:Trioza (genus)]] | [[Category:Trioza (genus)]] | ||
Latest revision as of 16:56, 4 October 2016
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Trioza apicalis Förster, 1848 - (carrot psyllid)
This psyllid is an important pest of carrots, especially in northern Europe. Infestations can result in total crop losses. The symptoms caused by the psyllid include leaf curling, yellowish and purplish discoloration of the leaves, stunting as well as smaller, deformed and tougher carrots. The psyllid is associated with haplotype C of "Candidatus Liberibacter solanacearum" and apparently transmits this bacterial disease to carrots. A survey in the carrot growing areas of Norway found up to half of all psyllids carrying the disease in some areas (Munyaneza et al., 2014).
In autumn, the adults migrate to conifers, especially Norway spruce, for overwintering. However, psyllid populations also exist in areas without conifer forests. They move back to carrots in spring where they lay eggs and breed.
| Vernacular names | |
|---|---|
| • Deutsch: | Grüner Möhrenblattfloh |
| • English: | carrot psyllid |
| • Español: | psila de la zanahoria |
| • Français: | psylle de la carotte |
The adults are 3-4 mm long, greenish brown with a bright green abdomen. Management is difficult. There are currently no effective insecticides available for control. Covering the plants with insect netting protects the carrots but causes other problems.
For a review see Láska, 2011.
- Images of Trioza apicalis symptoms on carrots (Lars-Arne Høgetveit, Norsk Landbruksrådgiving Viken - click to enlarge)
