Results 91 to 100 of about 163,284 (313)

Larval antibiosis to cabbage stem flea beetle (Psylliodes chrysocephala) is absent within oilseed rape (Brassica napus)

open access: yesPest Management Science, EarlyView.
We screened a panel of 98 Brassicaceae genotypes (97 Brassica napus and 1 Sinapis alba) for cabbage stem flea beetle (Psylliodes chrysocephala) larval antibiosis. We found limited evidence for antibiosis across B. napus but consistent antibiosis in S. alba. Brassicaceae relatives may therefore better inform resistance traits for breeding.
Ryan E Brock   +3 more
wiley   +1 more source

The Growth and Survival of Early Instars of \u3ci\u3eBellura Obliqua\u3c/i\u3e (Lepidoptera: Noctuidae) on \u3ci\u3eTypha Latifolia\u3c/i\u3e and \u3ci\u3eTypha Angustifolia\u3c/i\u3e [PDF]

open access: yes, 2017
Larvae of the noctuid moth Bellura obliqua are frequently encountered on Typha latifolia, but less commonly on Typha angustifolia. Experiments were conducted to compare the growth and survivorship of early B. obliqua instars on the two species of cattail.
Penko, J. M, Pratt, D. C
core   +2 more sources

How does leaf age affect performance? A comparative study of essential oils from young and mature Eucalyptus globulus leaves in crop protection

open access: yesPest Management Science, EarlyView.
Leaf age influences metabolomic profiling but not bioactivity of Eucalyptus globulus essential oils. Leaf age affects volatile levels of young and adult E. globulus oils, but not their bioactivity. Young leaf essential oil had higher contents of α‐ and β‐pinene. AEEO had higher levels of 1,8‐cineole and trans‐pinocarveol.
Mafalda Pinto   +11 more
wiley   +1 more source

Active Assessment of Female Codling Moth, Cydia pomonella (L.), Mating Status Under Mating Disruption Technologies

open access: yesInsects
Most assessments of sex pheromone-based mating disruption (MD) for codling moth (CM), Cydia pomonella (L.), have not included measurements of female mating.
Alan Lee Knight   +2 more
doaj   +1 more source

Development of the solitary larval endoparasitoid Glyptapanteles porthetriae (Hymenoptera: Braconidae) in its host Lymantria dispar (Lepidoptera: Lymantriidae)

open access: yesEuropean Journal of Entomology, 2000
The development of the solitary endoparasitic braconid Glyptapanteles porthetriae in gypsy moth larvae of different ages was studied. Host larvae were parasitized during the premolt to the 2nd instar (A-larvae), to the 3rd instar (B-larvae) or to the 4th
Christa NUSSBAUMER, Axel SCHOPF
doaj   +1 more source

Definition of the number of instars, description of the second instar andredescription of the last instar and pupa of Pantophthalmus kerteszianus(Enderlein, 1914) (Diptera: Pantophthalmidae)

open access: yesBoletim do Museu Paraense Emílio Goeldi - Ciências Naturais
O número total de ínstares larvais de Pantophthalmus kerteszianus foi determinado através de estudos morfológicos e biométricos. O segundo ínstar larval de P. kerteszianus é descrito, o último ínstar larval e a pupa são redescritos. As larvas foram coletadas em árvores de paricá (Schizolobium parahyba var. amazonicum) no município de Paragominas, Pará,
Luiz Edinelson Cardoso e Cardoso   +1 more
openaire   +1 more source

Chitosan‐protected dsRNA increases efficacy against Helicoverpa armigera without compromising biosafety for pollinators

open access: yesPest Management Science, EarlyView.
Chitosan/tripolyphosphate/double‐stranded RNA (dsRNA) nanoparticles enhance RNA interference efficacy of orally delivered dsRNA against Helicoverpa armigera. Nanoparticles reduce the LC50 and do not cause deleterious effects or toxicity on beneficial insects.
Daniel DN Vasquez   +12 more
wiley   +1 more source

Cumulative effect of HaNPV against Helicoverpa armigera infesting Chickpea

open access: yesEnvironment Conservation Journal, 2016
The instar-wise larval mortality in H. armigera due to HaNPV @ 0.500 ml/l showed a consistent decrease in all the five instars and cent per cent larval mortality was recorded in the first instar larvae.
C. Divya, D. M. Jethva, H. G. Kanara
doaj   +1 more source

Life History and Laboratory Rearing of \u3ci\u3eGerris Argenticollis\u3c/i\u3e (Hemiptera: Gerridae) with Descriptions of Immature Stages [PDF]

open access: yes, 2017
The life history of Gerris argenticollis was investigated in Jackson County, Illinois, March-June 1986, and the immature stages were described. The water strider also was reared from egg to adult under laboratory conditions.
Korch, Peter P, III, McPherson, J. E
core   +1 more source

Survival and Food Detection by First-Instar \u3ci\u3eMelanoplus Femurrubrum\u3c/i\u3e (Orthoptera: Acrididae) [PDF]

open access: yes, 2017
Newly hatched Melanoplus femurrubrum (DeGeer) were evaluated for survival without food under various moisture, temperature, and light conditions. Although nymphs survived up to 113 h without food, they required food 48-W h after hatching to ensure ...
Bland, R. G
core   +2 more sources

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