CINARA CUPRESSI PDF
Cinara cupressi is a brownish soft-bodied insect classified as an aphid. It has been discovered around the world feeding on various trees from. THE EFFICACY OF TREATMENTS WITH WATER EXTRACTS ON Cinara cupressi (Buckton). Conference Paper (PDF Available) · August with 34 Reads. Cypress aphid. Cinara cupressi. Cypress aphid | Cinara cupressi. Common name: Cypress aphid. Scientific name: Cinara cupressi. Alternative common names.
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Natural enemies of the aphid include parasitoid wasps in the genus Pauesiaand some of these have been considered for use in biological pest control. Temperature and plant nutrient effects on the development, survival and reproduction of Cinara spp. Similarly Pauesia juniperorum has been used in Chile. It is on the list of the world’s most invasive species. Taxonomic Tree Top of page Domain: The aphids themselves are extremely difficult to see because their brown bodies are so similar to that of the bark on which they sit.
Status and impact of invasive conifer pests in Africa. Biological control of forest aphid pests in Africa. Entomologia Experimentalis et Applicata.
The aphids are very difficult to see and can easily be missed at quarantine inspection unless the inspector is alerted to their possible presence. The two species range’s only overlap in the United Kingdom. These can fly strongly and can be carried by the wind for considerable distances to infest new host trees.
In the great majority of cases, identifications have been confirmed by microscopic examination of preserved specimens. More information about modern web browsers can be found at http: Recognition of the effect of Cinara cupressi Hemiptera: In Italy, there are up to 12 generations per year, individual insects living for about 22 days and having an average of 23 offspring.
Mendel Z; Golan Y, The impact on this on the plant depends on tree stress and weather factors. Annali – Accademia Italiana di Scienze Forestali, This, along with the absence of natural enemies, has allowed cypress aphid populations to increase rapidly in countries where the species has been introduced. The distal parts of the femora and the bases of the tibiae are dark brown or black cf. Results with hybrid trees indicated that resistance breeding through hybridization might offer a viable long-term solution to the aphid problem.
On the thorax the black bands are longitudinal, but are transverse on the abdomen with a rather larger blacker patch between the siphunculi. Numerous dead trees in rural and urban areas increased the risk of wildfire that could endanger life and property Ciesla, The results indicated that there was a strong additive genetic control, which could allow for the effective selection and breeding for resistance.
From its initial introduction point in Malawi, Africa, it spread through southern and eastern Africa, where it caused extensive damage in eight countries Ciesla, ; Murphy et al.
This is why at xinara point any form of treatment is useless, because when the first withered areas become visible the vast majority of the aphids are no longer on the foliage. The countries where the relevant population could be native or where damage has not been reported, or where the date of introduction was so early that it is not known, are not included. In Chile affected native forest species include Austrocedrus chilensis and Fitzroya cupressoides Montalva cuprrssi al.
These characteristics place them in the subgenus Cupressobium Eastop, ; Blackman and Eastop, Status and impact of invasive conifer aphid pests in Africa. Cypress aphid, Cinara cupressi.
Their saliva causes a phytotoxic reaction in the phloem tissue in the twig which becomes necrotic. The ants sometimes carry aphid nymphs to other parts of the tree which thus become infested.
They have also been observed transporting the aphids from one part of the tree to another, thus creating new areas of infestation.
cypress aphid Cinara cupressi (Buckton, )
Other aphids on same host: Deutsche Entomologische Zeitschrift, 38 There was no measurable effect of varying host-plant nutrition on the duration of the instars or overall survival. However we have found syrphid larvae consuming them see picture below. On susceptible hosts such as Cupressus lusitanica, if preventive action is not taken the entire tree may die Ciesla, The different populations or taxa in C. Impact Top of page Since the s, stands of cypresses and junipers in many countries have been seriously damaged by C.
With the sap failing to reach the tips of the twigs, they may wither. Commonwealth Forestry Review, 73 4: At this time of year only females are present and they reproduce parthenogenetically without matinggiving birth to live young. The winged aphids are strong fliers and may be carried for long distances by the wind.
Cinara cupressi sensu lato (Cypress aphid)
Biodiversity Top of page The national tree of Malawi, the native Mulanje cedar Widdringtonia nodiflorais confined to the Mulanje massif in widely scattered stands.
Don’t need the entire report? When the weather gets hot, the aphids move down to the ground to avoid the heat.
Also, the aphids are very well camouflaged against the tree bark and they are easily transported on planting stock Ciesla, Where in South Africa is it a problem? They observe that it is often difficult to spray large cinaea thoroughly and damage will occur when the aphid is abundant.