Results 61 to 70 of about 49,745 (311)

Is Helicoverpa armigera (Lepidoptera: Noctuidae) in Brazil? First detailed molecular detection report [PDF]

, 2013
The cotton bollworm, Helicoverpa armigera, is a quarantine agricultural pest for the American continents. It is thought to have invaded the American continents and led the founding of current H.
Anderson, Craig, Behere, Gajanan T., Silvie, Pierre, Soria, Miguel F., Tay, Wee Tek, Thomazoni, Danielle, Walsh, Thomas   +6 more
core  

Accurate identification of Helicoverpa armigera–Helicoverpa zea hybrids using genome admixture analysis: implications for genomic surveillance

Frontiers in Insect Science, 2023
Helicoverpa armigera, the cotton bollworm moth, is one of the world’s most important crop pests, and is spreading throughout the New World from its original range in the Old World. In Brazil, invasive H. armigera has been reported to hybridize with local populations of Helicoverpa zea. The correct identification of H. armigera-H.
Trujillo, Dario, Mastrangelo, Thiago, Estevez de Jensen, Consuelo, Verle Rodrigues, Jose Carlos, Lawrie, Roger, Massey, Steven E.   +5 more
openaire   +2 more sources

Role of mitochondrial complex I genes in host plant expansion of Bactrocera tau (Tephritidae: Diptera) by CRISPR/Cas9 system

Insect Science, EarlyView.
The role of 3 mitochondrial complex I gene in host expansion of Bactrocera tau was verified by CRISPR/Cas9 gene editing system. A stable homogenous strain (Btndufa7‐/‐) of B.tau was established after silencing Ndufa7. The reduced size of larvae and pupae of Ndufa7 knockout strain was first found.Then different levels of fitness and relative expression ...
Wei Shi, Linsheng He, Ruixiang Li, Jun Cao   +3 more
wiley   +1 more source

Insights on the nutritional ecology of a nocturnal pollinating insect

Insect Science, EarlyView.
Nutritional ecology examines the environmental effects on nutritional needs, food intake and foraging behaviors, and the use of nutrients ingested by animals. Among insects, Lepidoptera are often considered opportunistic foragers that visit a wide variety of available flowers, although with some preferences.
Evan Force, Caroline Suray, Charlotte Girardin, Michel B.C. Sokolowski, Matthieu Dacher   +4 more
wiley   +1 more source

Galleria mellonella (L.) (Pyralidae) und Spodoptera exigua (Hübner) (Noctuidae): Wirkungsunterschiede zwischen XenTari® (Bacillus thuringiensis aizawai), NeemAzal T/S® und ihren Kombinationen [PDF]

, 2008
Both, G. mellonella and S. exigua, are most important pests in tropical countries. G. mellonella has five to six generations per year (Abid et al. 1997; Ali 1996), there, and feeding in bee combs they find, besides wax, residues of honey, insect skin and
Ahmad, Masum, Basedow, Thies, El Shafie, Hamadttu, Tadesse, Betre   +3 more
core  

Mycotoxins‐contaminated wheat matrices bioconversion by Tenebrio molitor larvae (Coleoptera: Tenebrionidae)

Insect Science, EarlyView.
Larval development time, ADG, survival rate and substrate consumption were not negatively affected by the levels of mycotoxins contamination Larvae excreted most of the ingested DON and its derivatives through exuviae and frass The mycotoxin accumulation rates observed in larvae were always below the current legal limits for livestock feed Abstract ...
Valentina Candian, Valentina Scarpino, Alessandro Bona, Rosemarie Tedeschi, Massimo Blandino   +4 more
wiley   +1 more source

Binding site alteration is responsible for field-isolated resistance to Bacillus thuringiensis Cry2A insecticidal proteins in two Helicoverpa species. [PDF]

PLoS ONE, 2010
BackgroundEvolution of resistance by target pests is the main threat to the long-term efficacy of crops expressing Bacillus thuringiensis (Bt) insecticidal proteins.
Silvia Caccia, Carmen Sara Hernández-Rodríguez, Rod J Mahon, Sharon Downes, William James, Nadine Bautsoens, Jeroen Van Rie, Juan Ferré   +7 more
doaj   +1 more source

Agroecology and ecological engineering for pest management. Cotton protection as a case study [PDF]

, 2008
This synthesis provides an annotated guide to the thinking and publications behind the evolution of concepts in cotton pest management over the last fifty years.
Deguine, Jean-Philippe, Ferron, Pierre, Russell, Derek   +2 more
core  

Olfactory perception and behavioral effects of sex pheromone gland components in Helicoverpa armigera and Helicoverpa assulta [PDF]

Scientific Reports, 2016
AbstractTwo sympatric species Helicoverpa armigera and Helicoverpa assulta use (Z)-11-hexadecenal and (Z)-9-hexadecenal as sex pheromone components in reverse ratio. They also share several other pheromone gland components (PGCs). We present a comparative study on the olfactory coding mechanism and behavioral effects of these additional PGCs in ...
Meng Xu, Hao Guo, Chao Hou, Han Wu, Ling-Qiao Huang, Chen-Zhu Wang   +5 more
openaire   +2 more sources

Molecular mechanisms of sex determination in Lepidoptera: current status and perspectives

Insect Science, EarlyView.
The genetic basis of sex determination in Lepidoptera was discovered in 2014 in the silkworm Bombyx mori. In this model species, the W chromosome‐derived small piRNA called Fem piRNA downregulates the expression of a Z‐linked gene, Masculinizer (Masc), which leads to the default female‐specific splicing of the doublesex gene (dsxF) and thus to female ...
František Marec, Atsuo Yoshido, Arjen E. van′t Hof   +2 more
wiley   +1 more source