Results 71 to 80 of about 99,807 (322)
PLoS ONE, 2017 Heritable symbionts have been found to mediate interactions between host species and their natural enemies in a variety of organisms. Aphids, their facultative symbionts, and their potential fitness effects have been particularly well-studied.
Jennifer L Kovacs +3 more
doaj +1 more source
Frontiers in Physiology, 2021 Circadian clocks prepare the organism to cyclic environmental changes in light, temperature, or food availability. Here, we characterized the master clock in the brain of a strongly photoperiodic insect, the aphid Acyrthosiphon pisum ...
Francesca Sara Colizzi +6 more
doaj +1 more source
Atomic-phase interference devices based on ring-shaped Bose-Einstein condensates: Two ring case [PDF]
, 2002 We theoretically investigate the ground-state properties and quantum dynamics of a pair of adjacent ring-shaped Bose-Einstein condensates that are coupled via tunneling. This device, which is the analogue of a symmetric superconducting quantum interference device, is the simplest version of what we term an Atomic-Phase Interference Device (APHID).
arxiv +1 more source
The effect of "very fast" strategies on two species competition [PDF]
arXiv, 2023 We consider the effect of finite time extinction mechanisms (FTEM) such as (1) semi-linear harvesting terms, and (2) quasi-linear fast diffusion terms on two species Lokta-Volterra competition models. We show that these mechanisms can alter classical dynamics of competitive exclusion, and weak and strong competition by acting only on a \emph{small ...
arxiv
Asymmetry of plant-mediated interactions between specialist aphids and caterpillars on two milkweeds
, 2014 Summary 1. Plant-mediated interactions between co-occurring herbivores play an important role in insect herbivore communities. Although induced resistance pathways associated with jasmonic acid and salicylic acid are often implicated in such plant ...
J. Ali, A. Agrawal
semanticscholar +1 more source
An ecological cost associated with protective symbionts of aphids
Ecology and Evolution, 2014 Beneficial symbioses are widespread and diverse in the functions they provide to the host ranging from nutrition to protection. However, these partnerships with symbionts can be costly for the host.
S. Polin, J. Simon, Y. Outreman
semanticscholar +1 more source
Diffusion of constructed resources and specialism promote facilitation in spatial systems
Oikos, EarlyView.Sessile organisms, such as plants, contend with locally limiting nutrients and neighbours. By consuming nutrients or increasing local concentration by niche construction, they alter the conditions of growth in their local environment. Diffusion of resources alters the interaction sign between two neighbours usually thought to compete for resources.
Alice Nadia Ardichvili +3 more
wiley +1 more source
Actuarial Implications and Modeling of Yellow Virus on Sugar Beet After the EU's Ban on Neonicotinoids and Climate Change [PDF]
XVII Congress of EAAE, INRAE; EAAE, Aug 2023, Rennes, France, 2023 Following the EU's decision to ban neonicotinoids, this article investigates the impacts of yellow virus on sugar beet yields under the ban and under current and future climates. Using a model that factors in key variables such as sowing dates, phenological stages, first aphid flight and aphid abundance, simulations are performed using long-period ...
arxiv
Direct and indirect effects of warming on aphids, their predators, and ant mutualists.
Ecology, 2014 Species exist within communities of other interacting species, so an exogenous force that directly affects one species can indirectly affect all other members of the community.
B. Barton, A. Ives
semanticscholar +1 more source
Some Remarks on a Non-Local Variable Carrying Capacity Model for Aphid Population Dynamics [PDF]
arXiv, 2023 Aphids are damaging insect pests on many crops. Their density can rapidly build up on a host plant to several thousand over one growing season. Occasionally, a competition-driven decline in population early in the season, followed by a build-up later, is observed in the field.
arxiv