Results 141 to 150 of about 99,807 (322)

Facilitation of Sclerotinia sclerotiorum infestation by aphid feeding behaviour is not affected by aphid resistance in oilseed rape

open access: yesHeliyon
The relation between aphids and Sclerotinia stem rot (SSR) in oilseed rape is rarely examined because they are often studied alone. We have observed a significant correlation between the number of aphids and the occurrence of SSR in our field studies ...
Zhong-Ping Hao   +4 more
doaj  

Efficient methods for the estimation of the multinomial parameter for the two-trait group testing model [PDF]

open access: yesarXiv, 2018
Estimation of a single Bernoulli parameter using pooled sampling is among the oldest problems in the group testing literature. To carry out such estimation, an array of efficient estimators have been introduced covering a wide range of situations routinely encountered in applications.
arxiv  

Differences in within‐plant oviposition preferences and immature survival between Orius predators and the importance of spatial availability of prey

open access: yesInsect Science, EarlyView.
Orius predators oviposit endophytically, and plant characteristics play an important role in their oviposition choices. In this study, we show that oviposition preferences differ between species, and that these differences may correlate with juvenile performance.
Angelos Mouratidis   +3 more
wiley   +1 more source

Constancy of occurrence of aphid community (Hemiptera, Aphididae) on roses in the urban conditions of Lublin

open access: yesAnnales Horticulturae, 2020
The purpose of the present studies was to determine the frequency of particular species from the aphid community colonizing roses of different utility groups (Rosa rugosa Thunb., Rosa multiflora Thunb., park rose cv. ‘Grandhotel’, cluster flowered roses)
Katarzyna Kmieć
doaj  

Bayesian inference for diffusion driven mixed-effects models [PDF]

open access: yesarXiv, 2015
Stochastic differential equations (SDEs) provide a natural framework for modelling intrinsic stochasticity inherent in many continuous-time physical processes. When such processes are observed in multiple individuals or experimental units, SDE driven mixed-effects models allow the quantification of between (as well as within) individual variation ...
arxiv  

Exploring marking methods for the predatory hoverfly Sphaerophoria rueppellii (Diptera: Syrphidae)

open access: yesInsect Science, EarlyView.
As important pollinators and predators of aphids, hoverflies play an important role in ecosystems. This study focuses on identifying the best marking technique for the model species Sphaerophoria rueppellii that can be used to track hoverfly feeding and oviposition sites, evaluating three methods: rubidium (RbCl), fluorescein, and fluorescent dusts ...
Michele Violi   +4 more
wiley   +1 more source

Is the endophyte‐based plant protection against aphids mediated by changes in the insect microbiome?

open access: yesInsect Science, EarlyView.
We showed that the fungal endophyte Epichloë strain AR37 increased the plant resistance against aphids via the production of indole diterpene alkaloids. The reduction in aphid performance was not associated with changes in abundance/composition/diversity of the insect's bacterial microbiota, but additional endophyte effects on this microbiota cannot be
Daniel A. Bastías   +5 more
wiley   +1 more source

The urban island: climatic suitability of Linepithema humile (Hymenoptera: Formicidae) and the role of cities in the invasion of the Western Palearctic

open access: yesIntegrative Zoology, EarlyView.
Urban environments provide favorable conditions for the introduction and spread of nonnative and invasive species like the Argentine ant, which exploit ecological and climatic homogenization in cities to overcome natural barriers. Monitoring the expansion of such species can be achieved through potential distribution models, which in this study ...
Diego LÓPEZ‐COLLAR   +2 more
wiley   +1 more source

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