Results 71 to 80 of about 10,486 (247)

Landscape connectivity and insect herbivory: A framework for understanding tradeoffs among ecosystem services

Global Ecology and Conservation, 2015
Current theory suggests that ecosystem services in fragmented landscapes can be maintained by preserving connectivity of remaining habitat patches. However connectivity does not always influence services positively.
Dorothy Y. Maguire, Patrick M.A. James, Christopher M. Buddle, Elena M. Bennett   +3 more
doaj   +1 more source

Insect herbivory and plant adaptation in an early successional community*

Evolution, 2018
To address the role of insect herbivores in adaptation of plant populations and the persistence of selection through succession, we manipulated herbivory in a long-term field experiment. We suppressed insects in half of 16 plots over nine years and examined the genotypic structure and chemical defense of common dandelion (Taraxacum officinale), a ...
Agrawal, A., Hastings, A., Fines, D., Bogdanowicz, S., Huber, M.   +4 more
openaire   +4 more sources

Seedling resistance and chemical defenses against Psylliodes chrysocephala: the roles of seed age and sinapinic acid in Sinapis alba and Brassica napus

Pest Management Science, EarlyView.
The cabbage stem flea beetle (Psylliodes chrysocephala) is a major pest of winter oilseed rape (Brassica napus). We tested B. napus and Sinapis alba seedlings for feeding resistance and underlying chemical defenses. S. alba was least damaged, while metabolite profiles revealed resistance‐linked compounds, highlighting breeding potential for insect ...
Daniel Rüde, Samantha M Cook, Bernd Ulber, Tobias Pöhnl, Michael Rostás   +4 more
wiley   +1 more source

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

Pest 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, Clara Courtney, Steven Penfield, Rachel Wells   +3 more
wiley   +1 more source

Landscape composition influences invertebrate herbivory on flowering forbs in semi-natural grasslands

Basic and Applied Ecology
Landscape-scale land use is important in driving species communities and interactions. However, despite increasing concerns regarding the ecological consequences of insect declines, our understanding of how the relative proportions of different land ...
Yuanyuan Quan, Veronica Hederström, Johan Ekroos, Pablo Menubarbe, Theresia Krausl, Yann Clough   +5 more
doaj   +1 more source

Behavioural manipulation of the cabbage stem flea beetle (Psylliodes chrysocephala L): Prospects for push–pull strategies in oilseed rape

Pest Management Science, EarlyView.
Behavioural manipulation of Psylliodes chrysocephala provides promising opportunities for sustainable pest management in oilseed rape systems. This review synthesises evidence on glucosinolates and their volatile isothiocyanate derivatives as phagostimulants and attractants, alongside the repellent or antifeedant effects of non‐host plants, plant ...
Suleiman Mustapha, Patricia A Ortega‐Ramos, Jozsef Vuts, Tariq M Butt, E. Joel Loveridge, Daniel Rüde, Samantha M Cook   +6 more
wiley   +1 more source

Higher accumulation of mitragynine in Mitragyna speciosa (kratom) leaves affected by insect attack.

PLoS ONE
Kratom leaves are widely consumed by locals to increase their stamina for working longer hours in the field. However, insect damage to the leaves can lead to significant loss of leaf harvest. Despite this, there remains considerable uncertainty regarding
Nisa Leksungnoen, Tushar Andriyas, Rossarin Tansawat, Pichaya Pongchaidacha, Piyawadi Khaoiam, Thanundorn Thanusuwannasak, Chatchai Ngernsaengsaruay, Chawatat Thanoosing, Suwimon Uthairatsamee   +8 more
doaj   +1 more source

The effect of insect herbivory on the growth and fitness of introduced Verbascum thapsus L

NeoBiota, 2013
A majority of the plant species that are introduced into new ranges either do not become established, or become naturalized yet do not attain high densities and are thus considered ecologically and economically unproblematic. The factors that limit these
Hannah Wilbur, Christina Alba, Andrew Norton, Ruth Hufbauer   +3 more
doaj   +1 more source

Soybean induced resistance to Spodoptera eridania herbivory

Pest Management Science, EarlyView.
SOD, CAT, APX, PPO, KTI, and MDA levels were higher in the resistant soybean. S. eridania herbivory increased H2O2 and MDA, but decreased SOD and PPO levels. S. eridania herbivory increased KTI activity only in the resistant variety. Isoquercitrin and daidzin were exclusive to resistant and susceptible soybeans.
Bruno Henrique Sardinha de Souza, Arlindo Leal Boiça Júnior, Durvalina Maria Mathias dos Santos, Moacir Rossi Forim, Antonio Pizolato Neto, Andreísa Fabri Lima, Michael Joseph Stout   +6 more
wiley   +1 more source

Evolutionary trade‐offs between beauvericin production and growth define divergent virulence strategies in Beauveria

Pest Management Science, EarlyView.
Two virulence strategies in Beauveria: a growth strategy characterized by rapid within‐host proliferation, and a toxin strategy involving antimicrobial activity and toxicity to insects Abstract BACKGROUND Pathogen virulence is often attributed to toxin production, yet toxins are metabolically costly and may not universally enhance fitness.
Shasha Hu, Lana L B de Carvalho, Ricardo A Polanczyk, Michael J Bidochka   +3 more
wiley   +1 more source