Now showing items 1-10 of 1353
Allocation of herbivory-induced hydroxamic acids in the wild wheat Triticum uniaristatum
(Birkhauser Verlag Basel, 1998)
We characterized the induction of hydroxamic acids (Hx) by aphid infestation in the wild wheat Triticum uniaristatum by addressing the following questions: i) Do different leaves have similar responses to aphid damage?, ...
Dynamic effects of inducible defenses in a one-prey two-predators system
Inducible defenses influence the dynamics of both the prey exhibiting the response and its predator, but it could affect indirectly other populations in the community. Earlier studies concerned with population dynamics of ...
Scopolamine in Brugmansia suaveolens (Solanaceae): Defense, allocation, costs, and induced response
Pre-encounter versus post-encounter inducible defenses in predator–prey model systems
It has been reported that, in order to reduce mortality, prey are able to change their phenotype in response to cues released from predators. These short-time responses constitute effective antipredator strategies in ...
No risk, no gain? Limited benefits of a non-costly herbivory-induced defense in wheat
(Universite Laval, 1998)
Following a short-term infestation by aphids, wheat seedlings show an increase in their concentration of hydroxamic acids (Hx), secondary metabolites conferring resistance against insects. The benefits for a wheat cultivar ...
Multiple stable states in a model based on predator-induced defenses
(Elsevier B.V., 2017)
© 2017 Elsevier B.V. A large variety of antipredator defenses are exhibited by plants, animals and microbes in nature. A deep understanding of the dynamic consequences of prey responses to predation risk is essential for ...
Role of inducible defenses in the stability of a tritrophic system
(ELSEVIER SCIENCE BV, 2008-06)
Inducible defenses are a form of phenotypic plasticity that potentially modify direct interactions between various members of an ecological community, generating traitmediated indirect effects. In this work, the hypothesis ...
Qualitative effects of inducible defenses in trophic chains
By means of qualitative techniques we analyze the consequences of inducible defenses of species embedded in trophic chains on the community stability and responses of population equilibrium densities to press perturbations. ...
Trading direct for indirect defense? Phytochrome B inactivation in tomato attenuates direct anti-herbivore defenses whilst enhancing volatile-mediated attraction of predators
(Wiley Blackwell Publishing, Inc, 2016-12)
Under conditions of competition for light, which lead to the inactivation of the photoreceptor phytochrome B (phyB), the growth of shade-intolerant plants is promoted and the accumulation of direct anti-herbivore defenses ...
Laboratory experiments examining inducible defense show variable responses of temperate brown and red macroalgae
(Sociedad de Biología de Chile, 2005)