Listar por autor "Skouras, P. J."
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Development, growth, feeding and reproduction of Ceratomegilla undecimnotata, Hippodamia variegata and Coccinella septempunctata fed on the tobacco aphid, Myzus persicae nicotianae
Skouras, P. J.; Margaritopoulos, J. T.; Zarpas, K. D.; Tsitsipis, J. A. (2015)The demographic parameters and the larval aphid consumption of the predatory coccinellids Hippodamia variegata (Goeze) and Ceratomegilla undecimnotata (Schneider) were examined at five constant temperatures (17, 20, 23, ... -
Efficacy of the pyrethroid alpha-cypermethrin against Bactrocera oleae populations from Greece, and improved diagnostic for an iAChE mutation
Margaritopoulos, J. T.; Skavdis, G.; Kalogiannis, N.; Nikou, D.; Morou, E.; Skouras, P. J.; Tsitsipis, J. A.; Vontas, J. (2008)BACKGROUND: The most important pest of olive orchards worldwide is the olive fruit fly Bactrocera oleae (Gmelin). Its control in Greece has been based on organophosphates (OPs), but their intense use has led to the development ... -
Genetic variation among Mediterranean populations of Sesamia nonagrioides (Lepidoptera : Noctuidae) as revealed by RFLP mtDNA analysis
Margaritopoulos, J. T.; Gotosopoulos, B.; Mamuris, Z.; Skouras, P. J.; Voudouris, K. C.; Bacandritsos, N.; Fantinou, A. A.; Tsitsipis, J. A. (2007)Restriction fragment length polymorphism analysis of two segments of mitochondrial DNA (COI and 16S rRNA) was used to examine genetic variation in Sesamia nonagrioides (Lefebvre) populations from the Mediterranean basin. ... -
Insecticide resistance status of Myzus persicae (Hemiptera : Aphididae) populations from peach and tobacco in mainland Greece
Margaritopoulos, J. T.; Skouras, P. J.; Nikolaidou, P.; Manolikaki, J.; Maritsa, K.; Tsamandani, K.; Kanavaki, O. M.; Bacandritsos, N.; Zarpas, K. D.; Tsitsipis, J. A. (2007)The susceptibility of 88 and 38 field samples of Myzus persicae (Sulzer) to imidacloprid and deltamethrin respectively was examined using the FAO dip test bioassay. The field samples were collected from tobacco and peach ... -
Insecticide resistance status of Myzus persicae in Greece: long-term surveys and new diagnostics for resistance mechanisms
Voudouris, C. C.; Kati, A. N.; Sadikoglou, E.; Williamson, M.; Skouras, P. J.; Dimotsiou, O.; Georgiou, S.; Fenton, B.; Skavdis, G.; Margaritopoulos, J. T. (2015)BACKGROUND: Myzus persicae nicotianae is an important pest in Greece, controlled mainly by neonicotinoids. Monitoring of the aphid populations for resistance mechanisms is essential for effective control. RESULTS: Two new ... -
Molecular Analysis of the Coat Protein of Potato virus Y Isolates in Greece Suggests Multiple Introduction from Different Genetic Pools
Margaritopoulos, J. T.; Dovas, C. I.; Gounaris, J.; Skouras, P. J.; Kanavaki, O. M.; Katis, N. I.; Tsitsipis, J. A. (2010)The phylogenetic relationships among Potato virus Y (PVY) isolates from northern and southern Greece were investigated. A large part of coat protein gene of 49 tobacco isolates and three from pepper was examined. The ... -
Organophosphate resistance in olive fruit fly, Bactrocera oleae, populations in Greece and Cyprus
Skouras, P. J.; Margaritopoulos, J. T.; Seraphides, N. A.; Ioannides, I. M.; Kakani, E. G.; Mathiopoulos, K. D.; Atsitsipis, J. (2007)The olive fruit fly Bactrocera oleae (Gmelin) (Diptera: Tephritidae) is the most important pest of olives in countries around the Mediterranean basin. Its control has been based mostly on bait sprays with organophosphate ... -
Recent changes in the distribution of carboxylesterase genes and associated chromosomal rearrangements in Greek populations of the tobacco aphid Myzus persicae nicotianae
Kati, A. N.; Mandrioli, M.; Skouras, P. J.; Malloch, G. L.; Voudouris, C. C.; Venturelli, M.; Manicardi, G. C.; Tsitsipis, J. A.; Fenton, B.; Margaritopoulos, J. T. (2014)We present data on the frequency of amplified E4 and FE4 carboxylesterase genes in Myzus persicae s.l. clones collected during the years 2002-2007 and 2012 in Greece. Most clones were of the tobacco aphid, Myzus persicae ... -
A small deletion in the olive fly acetylcholinesterase gene associated with high levels of organophosphate resistance
Kakani, E. G.; Ioannides, I. M.; Margaritopoulos, J. T.; Seraphides, N. A.; Skouras, P. J.; Tsitsipis, J. A.; Mathiopoulos, K. D. (2008)Organophosphate resistance in the olive fly was previously shown to associate with two point mutations in the ace gene. The frequency of these mutations was monitored in Bactrocera oleae individuals of increasing resistance. ...