Results 21 to 30 of about 134,259 (308)

Influence of Landscape Diversity and Composition on the Parasitism of Cotton Bollworm Eggs in Maize. [PDF]

open access: yesPLoS ONE, 2016
We deployed >50,000 Helicoverpa armigera eggs in maize fields to assess the rate of parasitism by Trichogramma chilonis across 33 sites during a three-year span (2012-2014) in northern China. Subsequently, we used a partial least squares (PLS) regression
Bing Liu   +3 more
doaj   +1 more source

Parasitism of Cranberry Fruitworm (\u3ci\u3eAcrobasis Vaccinii\u3c/i\u3e; Lepidoptera: Pyralidae) by Endemic or Released \u3ci\u3eTrichogramma Pretiosum\u3c/i\u3e (Hymenoptera: Trichogrammatidae) [PDF]

open access: yes, 2017
Two levels of commercially-reared Trichogramma pretiosum were released during the oviposition period of the cranberry fruitworm (Aerobasis vaccinii) in eight Massachusetts (U.S.A.) cranberry bog sites. Release levels of 4.8 X 105 T. pretiosum per ha or 1.
Simser, Dave
core   +2 more sources

Self-regulation of insect communities in agrocenoses of organic farming systems

open access: yesКарантин і захист рослин, 2023
Goal. Establishing the effect of organic farming on the preservation of useful entomofauna in agrocenoses of winter wheat and sugar beet and determining its role in controlling the number of phytophages. Methods.
V. Sabluk   +3 more
doaj   +1 more source

Analyzing the Mass-Rearing System of the California Red Scale Parasitoid Aphytis melinus (Hymenoptera: Aphelinidae) [PDF]

open access: yes, 2018
Results from studies to improve mass rearing production of the parasitoid Aphytis melinus De Bach (Hymenoptera: Aphelinidae) are presented. Parasitoid production was carried out following standard commercial procedures using an alternative host ...
Castillo, María L.   +1 more
core   +1 more source

Effects of landscape context on herbivory and parasitism at different spatial scales [PDF]

open access: yes, 2003
Local community structure and interactions have been shown to depend partly on landscape context. In this paper we tested the hypothesis that the spatial scale experienced by an organism depends on its trophic level.
Steffen-Dewenter, Ingolf   +2 more
core   +1 more source

Estimating Parasitism of Colorado Potato Beetle Eggs, \u3ci\u3eLeptinotarsa Decemlineata\u3c/i\u3e (Coleoptera: Chrysomelidae), by \u3ci\u3eEdovum Puttleri\u3c/i\u3e (Hymenoptera: Eulophidae) [PDF]

open access: yes, 2017
A computer simulation was used to evaluate methods for estimating parasitism of Colorado potato beetle egg mass populations by Edovum puttleri. The algorithm incorporated the specific attack behavior of E. puttleri, and a development time for parasitized
Casagrande, R. A   +3 more
core   +2 more sources

BioFlow: a non-invasive, image-based method to measure speed, pressure and forces inside living cells

open access: yesScientific Reports, 2017
Cell motility is governed by a complex molecular machinery that converts physico-chemical cues into whole-cell movement. Understanding the underlying biophysical mechanisms requires the ability to measure physical quantities inside the cell in a simple ...
Aleix Boquet-Pujadas   +7 more
doaj   +1 more source

Natural parasitism of the second generation European corn borer eggs Ostrinia nubilalis (Hübner) (Lepidoptera, Pyralidae) by Trichogramma spp. in sweet corn fields in Vojvodina, Serbia - short communication

open access: yesPlant Protection Science, 2017
Natural parasitism of the European corn borer eggs (Hübner) by Trichogramma spp. (Hymenoptera, Trichogrammatidae) was assessed in sweet corn field in north-west Serbia, region Vojvodina at the localities of Ruski Krstur, from 2004 till 2007.
Ján Tancik
doaj   +1 more source

Simultaneous Parasitism of Field-Collected Green Cloverworm, \u3ci\u3eHypena Scabra\u3c/i\u3e (Lepidoptera: Noctuidae) Larvae by Endoparasitioids and an Entomopathogenic Fungus [PDF]

open access: yes, 2018
The impacts of entomopathogens (e.g., fungi, bacteria, protists and viruses) on larval Lepidoptera and their associated insect parasitoids have been examined in laboratory studies but field studies of interaction between these two mortality factors are ...
Pavuk, Daniel M, Williams, Charles E
core   +2 more sources

microRNAs in parasites and parasite infection [PDF]

open access: yesRNA Biology, 2013
miRNAs, a subclass of small regulatory RNAs, are present from ancient unicellular protozoans to parasitic helminths and parasitic arthropods. The miRNA-silencing mechanism appears, however, to be absent in a number of protozoan parasites. Protozoan miRNAs and components of their silencing machinery possess features different from other eukaryotes ...
Yadong, Zheng   +2 more
openaire   +2 more sources

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