Biological control sought for ash whitefly

Cause sought for student illness

Food p o iso n in g is be ing c o n ­ s idered by the D epa rtm e n t o f En­ v iro n m e n ta l H ealth and Safety (D E H S ) as a possib le cause o f the recen t surge o f ga s tro e n te ritis am ong N o rth Q uad students. No firm ev idence has been fo u nd yet to co n n ec t the N o tre Dam e Food Service w ith the illness. “ I t doesn 't seem lik e ly i t co u ld be food p o is o n in g ,...

Inactivation of Wolbachia Reveals Its Biological Roles in Whitefly Host

BACKGROUND The whitefly Bemisia tabaci is cryptic species complex composed of numerous species. Individual species from the complex harbor a diversity of bacterial endosymbionts including Wolbachia. However, while Wolbachia is known to have a number of different roles, its role in B. tabaci is unclear. Here, the antibiotic rifampicin is used to selectively eliminate Wolbachia from B. tabaci so ...

Canadian approval sought for controversial pain drug.

Urgent fisheries changes sought

Europe's fishermen should stop catching North Sea cod and continue to avoid Bay of Biscay anchovies next year if the two species are to stand a chance of survival after years of chronic overfishing, scientists announced last month. Despite improvements in the numbers of northern hake, herring and mackerel, other species living in the northeast Atlantic need more time to rebuild stocks, the Inte...

RNA Interference based Approach to Down Regulate Osmoregulators of Whitefly (Bemisia tabaci): Potential Technology for the Control of Whitefly

Over the past decade RNA interference (RNAi) technology has emerged as a successful tool not only for functional genomics, but in planta expression of short interfering RNAs (siRNAs) that could offer great potential for insect pest management. The diet of insects feeding exclusively on phloem sieves contains water and sugars as main components, and the uptake of the liquid food greatly depends ...