scholarly journals Update on the Status of Bemisia tabaci in the UK and the Use of Entomopathogenic Fungi within Eradication Programmes

Insects ◽  
2013 ◽  
Vol 4 (2) ◽  
pp. 198-205 ◽  
Author(s):  
Andrew Cuthbertson
2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Besma Hamrouni Assadi ◽  
Sabrine Chouikhi ◽  
Refki Ettaib ◽  
Naima Boughalleb M’hamdi ◽  
Mohamed Sadok Belkadhi

Abstract Background The misuse of chemical insecticides has developed the phenomenon of habituation in the whitefly Bemisia tabaci (Gennadius) causing enormous economic losses under geothermal greenhouses in southern Tunisia. Results In order to develop means of biological control appropriate to the conditions of southern Tunisia, the efficacy of the native strain of the predator Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and two entomopathogenic fungi (EPF) Beauveria bassiana and Lecanicillium muscarium was tested against Bemisia tabaci (Gennadius). Indeed, the introduction of N. tenuis in doses of 1, 2, 3, or 4 nymphs per tobacco plant infested by the whitefly led to highly significant reduction in the population of B. tabaci, than the control devoid of predator. The efficacy of N. tenuis was very high against nymphs and adults of B. tabaci at all doses per plant with a rate of 98%. Likewise, B. bassiana and L. muscarium, compared to an untreated control, showed a very significant efficacy against larvae and adults of B. tabaci. In addition, the number of live nymphs of N. tenuis treated directly or introduced on nymphs of B. tabaci treated with the EPF remained relatively high, exceeding 24.8 nymphs per cage compared to the control (28.6). Conclusions It can be concluded that the native strain of N. tenuis and the EPF tested separately were effective against B. tabaci. Their combined use appears to be possible.


Environments ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 59
Author(s):  
Omar Al-Dulaimi ◽  
Mostafa E. Rateb ◽  
Andrew S. Hursthouse ◽  
Gary Thomson ◽  
Mohammed Yaseen

More than 50% of the UK coastline is situated in Scotland under legislative jurisdiction; therefore, there is a great opportunity for regionally focused economic development by the rational use of sustainable marine bio-sources. We review the importance of seaweeds in general, and more specifically, wrack brown seaweeds which are washed from the sea and accumulated in the wrack zone and their economic impact. Rules and regulations governing the harvesting of seaweed, potential sites for harvesting, along with the status of industrial application are discussed. We describe extraction and separation methods of natural products from these seaweeds along with their phytochemical profiles. Many potential applications for these derivatives exist in agriculture, energy, nutrition, biomaterials, waste treatment (composting), pharmaceuticals, cosmetics and other applications. The chemical diversity of the natural compounds present in these seaweeds is an opportunity to further investigate a range of chemical scaffolds, evaluate their biological activities, and develop them for better pharmaceutical or biotechnological applications. The key message is the significant opportunity for the development of high value products from a seaweed processing industry in Scotland, based on a sustainable resource, and locally regulated.


2011 ◽  
Vol 5 (1) ◽  
pp. 121-138 ◽  
Author(s):  
Nick Prior

This paper reviews the status, position and legacy of Bourdieu in the sociology of music, the waxing and waning of his influence and the recent move away from Bourdieu towards something like a post-critical engagement with musical forms and practices. The idea is to show the reaction to and treatment of Bourdieu’s ideas as a gauge of where we are in the sociology of culture, the various strands of influence that emanate from his work, and to assess what is at stake in a ‘post-Bourdieu’ moment when a position once considered progressive and critical now acts as the foil against which new work is being conducted. The article engages with some recent contributions to the music/society debate from figures in the UK and France, and points to the ways these contributions move debates on musico-social relations into territories more sensitive to the complex mediating qualities of music. Such work is better placed, it is argued, to represent music as an animating force in everyday life, including its specific mediating qualities ‘in action’. At the same time, however, the construction of a new sociology of music is not without its perils. The article will conclude with some potential problems with these approaches, and take stock of what might be lost as well as gained by adherence to them.


2021 ◽  
pp. 107618
Author(s):  
Satish Kumar Sain ◽  
Dilip Monga ◽  
Neelkanth S. Hiremani ◽  
Dipak T. Nagrale ◽  
Sandhya Kranthi ◽  
...  

Significance The differing perspectives of unionists and nationalists on the creation of Northern Ireland as a political entity within the United Kingdom, together with Brexit and tensions over the Northern Ireland Protocol (NIP), have brought the contentious issue of Irish reunification onto the political agenda in Northern Ireland and the Irish Republic. Impacts Scottish independence would likely increase momentum for a referendum on Irish unity. Successful implementation of the NIP, giving firms access to EU and UK markets, may support arguments for maintaining the status quo. If the UK government abandons the NIP, the adverse trade impact on Northern Irish firms could increase support for unification.


2021 ◽  
Vol 20 (3) ◽  
pp. Christopher-Vajda
Author(s):  
Christopher Vajda

Following the expiry on 31 December 2020 of the ‘transition period’ under the UK/EU Withdrawal Agreement, the relationship between UK and EU law had changed. Whilst much EU legislation at that date will continue to apply in UK law as ‘retained EU law’ and judgments of the EU courts handed down before that date will remain binding on UK courts as ‘retained EU case law’, the Court of Appeal and Supreme Court can depart from that case law. Whilst EU court judgments handed down after that date are not binding on UK courts, they may be taken into account. This article considers both the status of EU retained case law and when the Supreme Court and Court of Appeal may depart from it, and the future of EU law that is not ‘retained EU case law’ and how judgments of the European Courts and national courts of its Member States may influence UK judges in the future.


2009 ◽  
Vol 14 (1) ◽  
pp. 26-41 ◽  
Author(s):  
Clare Saunders

Political opportunity structures are often used to explain differences in the characteristics of movements in different countries on the basis of the national polity in which they exist. However, the approach has a number of weaknesses that are outlined in this article. The article especially stresses the fact that such broad-brush approaches to political opportunity structures fail to account for the different characteristics of movement organisations within the same polity. The article therefore recommends using a more fine-tuned approach to political opportunities, taking into account that the strategies and status of organisations affect the real political opportunities they face. This fine-tuned approach is used to predict how the status and strategy of environmental organisations might influence the extent to which different types of environmental organisations in the UK network with one-another. We find that organisations that face an open polity - those with a moderate action repertoire and a constructive relationship with government institutions - tend not to cooperate with those with a radical action repertoire and negative relations with government institutions. On the other hand, those that vary their action repertoires, and which have variable status according to the issues involved or campaign targets, have a much broader range of network links with other types of organisations. Thus, there is much more diversity in types of environmental organisation in the UK than the broad-brush to political opportunity structures would account for. Nonetheless, it does seem that environmental organisations are aware of how their own behaviours might influence (non-structural) political opportunities, and that they mould their strategies and networking patterns around this awareness.


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