Temat: true bug - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Insecticide susceptibility of the green plant bug, Apolygus lucorum Meyer-Dur (Homoptera: Miridae) and two predatory arthropods
Autorzy:: Zhang, Z.
Zhang, X.
Liu, F.
Mu, W.
Powiązania:: https://bibliotekanauki.pl/articles/66506.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: insecticide
susceptibility
green plant bug zob.true bug
true bug
Apolygus lucorum
Homoptera
Miridae
arthropod
cotton
pest
Chrysopa sinica
Propylaea japonica
safety evaluation
toxicity
Opis:: The green plant bug (Apolygus lucorum Meyer-Dür) is a key pest of Bt cotton in China. Along with biological control, chemical control is one of the most important strategies in A. lucorum Integrated Pest Management (IPM). The goal of this study was to evaluate the toxicity of eight conventional insecticides to A. lucorum and to assess the susceptibility of two generalist predators Chrysopa sinica (Jieder) and Propylaea japonica (Thunbery) to insecticides that are commonly used in A. lucorum management. Via glass-vial and leaf-dip bioassay, toxicity tests with selected insecticides at two different life-stages of A. lucorum indicated significant differences between the LD50 or LC50 values for these compounds within different insecticidal classes. Phenylpyrazole fipronil had the highest toxicity to 4th-instar nymphs and adults of A. lucorum, whereas neonicotinoid imidacloprid had the lowest toxicity among the insecticides. Females were more tolerant to insecticides than were males, as shown by the higher LD50 values for females. Furthermore, laboratory tests showed that endosulfan had the highest selectivity to C. sinica and P. japonica: the selective toxicity ratios (STRs) were superior to other tested insecticides, particularly imidacloprid, and were 5.396 and 4.749-fold higher than baseline STRs, respectively. From this study, we conclude that fipronil can potentially be used to efficiently control A. lucorum. An alternative control agent worth consideration is endosulfan, owing to its relative safety to non-targeted natural enemies.
Źródło:: Journal of Plant Protection Research; 2015, 55, 4
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Population of true bugs [Heteroptera] on the inflorescenses of quinoa [Chenopodium quinoa Willd.]
Autorzy:: Wrzesinska, D
Wawrzyniak, M.
Gesinski, K.
Powiązania:: https://bibliotekanauki.pl/articles/65415.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Nabidae
Chenopodium quinoa
Lygus rugulipennis
Heteroptera
Pentatomidae
quinoa
Anthocoridae
Miridae
population
true bug
bug
Opis:: In the years 1999-2000 the studies on the population of true bugs colonizing the inflorescences of quinoa (Chenopodium quinoa Willd.) were conducted in Chrząstowo near Bydgoszcz. The dominating species was Lygus rugulipennis Popp. The species was recorded in 81.44% in 1999 and 83.64% in 2000 of all collected true bugs.
Badania przeprowadzono w latach 1999-2000 na uprawie komosy ryżowej Chenopodium quinoa Willd. Celem pracy było poznanie heteropterofauny zasiedlającej kwiatostany tej rośliny. Spośród pluskwiaków roślinożernych gatunkiem dominującym był zmienik lucernowiec – Lygus rugulipennis Popp. Stanowił on w 1999 roku 81,44%, a w 2000 roku 83,64% wszystkich zebranych pluskwiaków. Drugim najliczniej występującym gatunkiem był zmienik zielonek – Lygocoris spinolai MeyD (10,06-10,19%). W zebranym materiale oznaczono również dwa gatunki pluskwiaków drapieżnych - Orius niger Wff. I Nabis pseudoferus Rm.
Źródło:: Journal of Plant Protection Research; 2001, 41, 4
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The role of detoxifying enzymes in the resistance of the cowpea aphid (Aphis craccivora Koch) to thiamethoxam
Autorzy:: Abdallah, I.S.
Abou-Yousef, H.M.
Fouad, E.A.
El-Hady Kandil, M.A.
Powiązania:: https://bibliotekanauki.pl/articles/66085.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: detoxifying enzyme
resistance
cowpea aphid
Aphis craccivora zob.cowpea aphid
groundnut aphid zob.cowpea aphid
black legume aphid
true bug
Aphididae
synergism
thiamethoxam
insecticide
Opis:: The cowpea aphid (Aphis craccivora Koch) is considered a serious insect pest attacking several crops. We carried out biochemical studies to elucidate the role of the metabolising enzymes in conferring resistance to thiamethoxam, in two strains (resistant and susceptible) of the cowpea aphid. Bioassay experiments showed that the thiamethoxam selected strain developed a 48 fold resistance after consecutive selection with thiamethoxam for 12 generations. This resistant strain also exhibited cross-resistance to the tested carbamates; pirimicarb and carbosulfan, organophosphorus (malathion, fenitrothion, and chlorpyrifos-methyl), and the neonicotinoid (acetamiprid). Synergism studies have indicated that S,S,S-tributyl phosphorotrithioate (DEF), a known inhibitor for esterases, increased thiamethoxam toxicity 5.58 times in the resistant strain compared with the susceptible strain. Moreover, the biochemical determination revealed that carboxylestersae activity was 30 times greater in the resistant strain than in the susceptible strain. In addition, the enzyme activity of glutathione S-transferase (GST) and mixed function oxidases (mfo) increased only in the resistant strain 3.7 and 2.7 times, respectively, in relation to the susceptible (the control). Generally, our results suggest that the higher activity of the detoxifying enzymes, particularly carboxylesterase, in the resistant strain of the cowpea aphid, apparently have a significant role in endowing resistance to thiamethoxam, although additional mechanisms may contribute.
Źródło:: Journal of Plant Protection Research; 2016, 56, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The accumulation of SA- and JA-signaling pathways in the response of Glycine max cv. “Nam Dan” to infestation by Aphis craccivora
Autorzy:: Tran, N.T.
Tran, T.T.H.
Do, N.D.
Mai, V.C.
Powiązania:: https://bibliotekanauki.pl/articles/66714.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: phytohormone
signal molecule
physiological process
plant
environmental stress
aphid
plant protection
Glycine max
infestation
Aphis craccivora
cowpea aphid
black legume aphid zob.cowpea aphid
true bug
defense response
jasmonic acid
salicylic acid
Opis:: Phytohormones function as signal molecules that regulate physiological processes to protect plants from environmental stresses, including aphids’ attack. We studied the pattern within the defense mechanisms of soybean [Glycine max (L.) Merr. cv. “Nam Dan”] regarding the signaling pathways of salicylic acid (SA), and jasmonic acid (JA) in response to cowpea aphid (Aphis craccivora Koch). With infestation by cowpea aphid, SA was the first to accumulate and reached high levels 24 hours post-infestation (hpi). An accumulation of SA in the early response of soybean probably triggers inducible specific defense reactions. Following SA, JA was later induced and continuously increased to high levels 96 hpi. An accumulation of JA in the later response may be a critical step in the signaling of the downstream defense cascade. In addition, phenylalanine ammonia-lyase (PAL, EC 4.3.1.24) and benzoic acid 2-hydroylase (BA2H), enzymes involved in the biosynthesis of SA, and lipoxygenase (LOX, EC 1.13.11.12), an important enzyme in the JA biosynthesis pathway, were also induced by cowpea aphid. The changes in the enzymatic activity of PAL, BA2H and LOX, and expression of gene encoding PAL were closely associated with the accumulation of endogenous SA and JA, respectively. The variations in the levels of these defense-related compounds were strongly connected with density and the duration of cowpea aphid infestation. Different accumulations of SA- and JA-signaling pathways may contribute to a coordinated regulation leading to the formation of resistant lines in the defense mechanisms of G. max cv. “Nam Dan” against A. craccivora.
Źródło:: Journal of Plant Protection Research; 2017, 57, 4
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

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