Classical and fortuitous biological control of the prickly pear cochineal, Dactylopius opuntiae, in Israel
Publication date: Available online 28 November 2019Source: Biological ControlAuthor(s): Zvi Mendel, Alexei Protasov, Juan M. Vanegas-Rico, J. Refugio Lomeli-Flores, Pompeo Suma, Esteban Rodríguez-LeyvaAbstractThe cochineal, Dactylopius opuntiae (Hemiptera: Dactylopiidae) was first reported in Israel in 2013 in a restricted area in the upper Galilee from where, by 2018, it had spread throughout Galilee and the northern Coastal Plain. It infests and kills the Indian-fig prickly pear, Opuntia ficus-indica (Cactaceae), a prominent plant in the landscape of Israel and other Mediterranean countries. Inundative releases of industrially mass-reared Cryptolaemous montrouzieri (Coleoptera: Coccinellidae), intended to control early cochineal outbreaks have been unsuccessful. Two insect predators of D. opuntiae — Hyperaspis trifurcata (Coccinellidae) and Leucopina bellula (Diptera: Chamaemyiidae) — were collected in Mexico and sent to Israel, where both were tested against the target prey and several non-target prey species. Approximately 2,500 H. trifurcata individuals were released in the summer of 2017, and 1,300 L. bellula individuals in the following summer, mostly at different sites. In midsummer of 2017, a buildup of large populations of naturalized C. montrouzieri was observed in the northern Coastal Plain of Israel where, in 2018, it played a significant role in restraining the cochineal populations. Other local predatory species did not attack the cochineal. ...
Here are the results of the poll.Do You Believe The COVID-19 Outbreak Poses A Substantial Threat To The Australian Economy When Added To The Drought, Floods and Bushfires We Have Already Seen?Yes 63% (38) No 33% (20) I Have No Idea 3% (2) Total votes: 60 A fairly clear majority vote. Most seem to think all this will knock us about a bit. Any insights on the poll welcome as a comment, as usual. A very poor turn out of votes. Pity about that - must have been a boring question? It must also hav e been a relatively hard question as 2/60 readers were not sure how to respond. Again, many, many thanks to all those that...
ConclusionThe probability of virus detection is independent of the time between notification of the outbreak or symptom onset and sample collection. Our results suggest possible defects in cleaning protocols and disinfection in closed and semi-closed settings.
This report suggests that viral load kinetics of SARS-CoV-2 may be different from that of previously reported other coronavirus infections such as SARS-CoV. PMID: 32080991 [PubMed - in process]
Authors: Park WB, Kwon NJ, Choi SJ, Kang CK, Choe PG, Kim JY, Yun J, Lee GW, Seong MW, Kim NJ, Seo JS, Oh MD Abstract Novel coronavirus (SARS-CoV-2) is found to cause a large outbreak started from Wuhan since December 2019 in China and SARS-CoV-2 infections have been reported with epidemiological linkage to China in 25 countries until now. We isolated SARS-CoV-2 from the oropharyngeal sample obtained from the patient with the first laboratory-confirmed SARS-CoV-2 infection in Korea. Cytopathic effects of SARS-CoV-2 in the Vero cell cultures were confluent 3 days after the first blind passage of the sample. Coronavi...
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