Lilioceris lilii (lily leaf beetle).

Author(s):  
Marc Kenis

Abstract L. lilii is a Eurasian chrysomelid beetle that was first found in Quebec, Canada, in 1943, from where it has spread to several Canadian Provinces, and Vermont and Maine in the USA. It was also reported in Boston, Massachusetts, in 1992, and it is now found in several New England States. It is also alien and invasive in the UK and, probably, in Northern Europe. The beetle most probably spreads with the sale and movement of potted lilies, flowering bulbs or cut flowers. In countries where it is invasive, it is a serious pest of cultivated lilies and fritillaries. Without control methods, leaves and flowers are totally defoliated by larvae. In North America, it also represents a threat to native lilies.

2001 ◽  
Vol 133 (5) ◽  
pp. 671-674 ◽  
Author(s):  
M.S. Gold ◽  
R.A. Casagrande ◽  
L.A. Tewksbury ◽  
S.B. Livingston ◽  
M. Kenis

The lily leaf beetle, Lilioceris lilii Scopoli, was first found in North America near Montreal, Canada, in 1943 (LeSage 1992). It was recovered in Boston, Massachusetts, in 1992 (Livingston 1996), and now occurs throughout all of the New England states and in the Canadian provinces of Quebec, Ontario, Nova Scotia, and Manitoba. It is a serious pest of native and cultivated lilies (Liliaceae) (Livingston 1996). This univoltine insect overwinters as an adult and after initiating feeding in the spring, oviposits in rows on the undersides of lily leaves. Larvae, which carry a fecal shield, pass through four instars before pupating in the soil. In North America, larval feeding often results in complete plant defoliation. Lilioceris lilii apparently originated in Asia (Berti and Rapilly 1976), and now exists throughout Eurasia from Siberia to Morocco and from the United Kingdom to China (Labeyrie 1963; Lu and Casagrande 1998). Based on its Eurasian distribution, L. lilii will likely increase its distribution in North America.


Insects ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 560 ◽  
Author(s):  
Maggie Freeman ◽  
Chris Looney ◽  
Marina J. Orlova-Bienkowskaja ◽  
David W. Crowder

Invasive species are among the leading threats to global ecosystems due to impacts on native flora and fauna through competition and predation. The lily leaf beetle, Lilioceris lilii Scopoli (Coleoptera: Chrysomelidae), is an invasive pest of lilies (Lilium spp.) and other genera of Liliaceae (Liliales). A habitat suitability model was created using Maxent, to help predict if L. lilii will be able to establish in locations were native North American Liliaceae species grow. The model was created using georeferenced occurrence records from the beetle’s native, naturalized, and invasive range. Model results indicate that precipitation in the driest quarter and annual average temperatures are most strongly correlated with L. lilii distribution, and suggest that the species will perform poorly in very dry, hot, or cold environments. The model also indicates that the beetle should be able to establish throughout the range of most North American Liliaceae genera, including species of special conservation concern. This model can be used by natural area managers to identify areas of high habitat suitability that overlap with vulnerable North American Liliaceae species, and prioritize L. lilii monitoring and control activities as the beetle continues to expand its range.


2003 ◽  
Vol 135 (4) ◽  
pp. 587-588 ◽  
Author(s):  
Laurent LeSage ◽  
Brent Elliott

The lily leaf beetle, Lilioceris lilii (Scopoli) (Fig. 1), was first noticed in Portage la Prairie (49°58′N, 98°20′W), about 90 km west of Winnipeg, in June and July 1999. The beetles were present on Asiatic lily varieties only, especially tiger lilies (Lilium tigrinum Ker-Gawl (Liliaceae)). Larvae and adults were observed at two locations in the northeastern section of the town. The plants that were attacked were completely defoliated.


2015 ◽  
Vol 18 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Alessandro Dieni ◽  
Jacques Brodeur ◽  
Julie Turgeon

Anemia ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
A. Hannemann ◽  
E. Weiss ◽  
D. C. Rees ◽  
S. Dalibalta ◽  
J. C. Ellory ◽  
...  

Sickle cell disease (SCD) is one of the commonest severe inherited disorders, but specific treatments are lacking and the pathophysiology remains unclear. Affected individuals account for well over 250,000 births yearly, mostly in the Tropics, the USA, and the Caribbean, also in Northern Europe as well. Incidence in the UK amounts to around 12–15,000 individuals and is increasing, with approximately 300 SCD babies born each year as well as with arrival of new immigrants. About two thirds of SCD patients are homozygous HbSS individuals. Patients heterozygous for HbS and HbC (HbSC) constitute about a third of SCD cases, making this the second most common form of SCD, with approximately 80,000 births per year worldwide. Disease in these patients shows differences from that in homozygous HbSS individuals. Their red blood cells (RBCs), containing approximately equal amounts of HbS and HbC, are also likely to show differences in properties which may contribute to disease outcome. Nevertheless, little is known about the behaviour of RBCs from HbSC heterozygotes. This paper reviews what is known about SCD in HbSC individuals and will compare the properties of their RBCs with those from homozygous HbSS patients. Important areas of similarity and potential differences will be emphasised.


2017 ◽  
Vol 20 (2) ◽  
pp. 55 ◽  
Author(s):  
Mirjana Brzica

In the present study some bio-ecological characteristics of Lilioceris lilii in Bosnia and Herzegovina are presented. The insect’s presence was confirmed in the majority of the researched locations in Bosnia and Herzegovina. The average body length of L. lilii was 7.64 mm (7.025 mm for the males while 8.106 mm for the females) and the average body width 3.75 mm. The average length of a fully developed larva was 6.36 mm, and the average width was 2.69 mm. In terms of the cocoon, the average length was 8.83 mm and its width was 5.82 mm. Duration of embryonic development under field conditions was 8.5 days in average. The average duration of larval development (4 instars) was 16 days and the pupal stage lasted approximately 18 days. Lilioceris lilii retreated into winter quiescence at the beginning of autumn, thereof completes one generation per year. In the area of Sarajevo in field conditions the number of the laid eggs per female was 130 in average. The insect undergoes its entire development at the Asian and Oriental species of lily, on all the above-ground parts of the plants. Lilium candidum lily species that was present in all home gardens in the observed areas was the major host of the L. lilii. Experimentation with Aloae vera proved that this species was not a host of L. lilii.


Author(s):  
Pia Majbritt Jensen

Lifestyle is a TV genre that exists predominantly on the screens of Northern Europe and Anglophone countries such as the UK, the USA and Australia. Hence, lifestyle formats are not traded globally but rather trans-nationally within a distinct geo-linguistic region. Nonetheless, lifestyle programming is still produced very differently within this region according to the media systemic conditions of the specific national TV markets and the specific broadcasters and channels in question. As such, the lifestyle genre is indeed tremendously flexible and elastic and can be used in a diverse number of ways, catering for local broadcasters’ image and target groups, local markets’ competitive conditions, media regulations, and history. This article investigates the international extent of the genre and looks into possible explanations for its Anglophone and Northern European bias. Subsequently, the great elasticity of the genre is examined by way of a thorough analysis of the Australian and Danish versions of the program format The Block, which will demonstrate precisely how the genre can be adapted radically differently to suit two diverse broadcasters and their diverse conditions. Livsstilsgenrens internationale udbredelse og elasticitet Artiklen tager et produktionsperspektiv på livsstils-tv, der er en relativt ny underholdningsgenre. Den har sine historiske rødder i de didaktiske faktagenrer, men dens moderne, mere underholdende[,] version blev født på britisk tv’s primetime i 1990’erne, hvorfra den spredtes internationalt, hovedsageligt til andre angelsaksiske lande samt Danmark og resten af Nordeuropa. Et andet karakteristika ved genren er, at livsstilsprogrammerne i stigende omfang handles på det internationale tv-marked som programformater, der efterfølgende versioneres lokalt på en sådan måde, at de passes ind efter markedsforhold uden for deres originale hjemmemarked. Livsstilsformaterne danner således en ny og anderledes og stærkt globaliseret forretnings- og produktionsmodel. På trods af det synes livsstilsgenren at være umådeligt elastisk, og de samme livsstilsformater produceres på meget forskellige måder fra land til land alt efter de lokale markeders mediesystemiske forhold. Artiklen undersøger først den internationale udbredelse af livsstilsgenren og mulige forklaringer på dens angelsaksiske og nordeuropæiske bias. Gennem en komparativ analyse af henholdsvis den australske og den danske versionering af formatet The Block (på dansk Huset) undersøges herefter genrens elasticitet. Den komparative analyse demonstrerer, hvordan genren versioneres radikalt forskelligt i de to lande, og hvordan formatet tilpasses to forskellige broadcastere og deres forskellige forhold på to nationale markeder, der hver for sig er præget af konkurrencemæssige, mediepolitiske og tv-historiske forskelle. Til slut argumenterer artiklen for, at nationale kulturforskelle blot kan tilbyde en mindre del af forklaringen på de radikale forskelle mellem de to versioneringer. I stedet vil en nærmere analyse af de lokale mediesystemiske forhold, der former lokale produktionsforhold, give en mere detaljeret og tilbundsgående forklaring på og forståelse af forskellene.


Sign in / Sign up

Export Citation Format

Share Document