Results 11 to 20 of about 11,196 (277)

Toxicity and taste: unequal chemical defences in a mimicry ring. [PDF]

open access: yesProc Biol Sci, 2018
Mimicry of warning signals is common, and can be mutualistic when mimetic species harbour equal levels of defence (Müllerian), or parasitic when mimics are undefended but still gain protection from their resemblance to the model (Batesian). However, whether chemically defended mimics should be similar in terms of toxicity (i.e.
Winters AE   +8 more
europepmc   +11 more sources

Leaf chemical defences and insect herbivory in oak: accounting for canopy position unravels marked genetic relatedness effects. [PDF]

open access: yesAnn Bot, 2020
*Background and Aims Highly controlled experiments document that plant genetic diversity and relatedness can shape herbivore communities and patterns of herbivory. Evidence from the field is, however. scarce and inconsistent.
Valdés-Correcher E   +6 more
europepmc   +3 more sources

Inducible chemical defences in animals [PDF]

open access: yesOikos, 2014
Phenotypic plasticity is extremely widespread in the behaviour, morphology and life‐history of animals. However, inducible changes in the production of defensive chemicals are described mostly in plants and surprisingly little is known about similar plasticity in chemical defences of animals. Inducible chemical defences may be common in animals because
Hettyey, Attila   +2 more
openaire   +5 more sources

How to fight multiple enemies: target-specific chemical defences in an aposematic moth. [PDF]

open access: yesProc Biol Sci, 2017
Animals have evolved different defensive strategies to survive predation, among which chemical defences are particularly widespread and diverse. Here we investigate the function of chemical defence diversity, hypothesizing that such diversity has evolved
Rojas B   +6 more
europepmc   +3 more sources

Specificity in Mesograzer-Induced Defences in Seagrasses. [PDF]

open access: yesPLoS ONE, 2015
Grazing-induced plant defences that reduce palatability to herbivores are widespread in terrestrial plants and seaweeds, but they have not yet been reported in seagrasses. We investigated the ability of two seagrass species to induce defences in response
Begoña Martínez-Crego   +5 more
doaj   +2 more sources

Geographical and within-population variation of constitutive chemical defences in a Mediterranean oak (Quercus ilex)

open access: yesForest Systems, 2020
Aim of study: to assess whether constitutive levels of total phenols and condensed tannins acting as chemical defences in Quercus ilex vary across regions, populations and genotypes.
Manuela Rodríguez-Romero   +2 more
doaj   +3 more sources

Deterrent activities in the crude lipophilic fractions of Antarctic benthic organisms: chemical defences against keystone predators [PDF]

open access: yesPolar Research, 2014
Generalist predation constitutes a driving force for the evolution of chemical defences. In the Antarctic benthos, asteroids and omnivore amphipods are keystone opportunistic predators.
Laura Núñez-Pons, Conxita Avila
doaj   +2 more sources

Anti-predatory chemical defences in Antarctic benthic fauna [PDF]

open access: yesMarine Biology, 2015
SI
Moles, J.   +5 more
openaire   +4 more sources

Chemical antipredator defence is linked to higher extinction risk [PDF]

open access: yesRoyal Society Open Science, 2016
Many attributes of species may be linked to contemporary extinction risk, though some such traits remain untested despite suggestions that they may be important.
Kevin Arbuckle
doaj   +5 more sources

Chemical defences indicate bold colour patterns with reduced variability in aposematic nudibranchs. [PDF]

open access: yesProc Biol Sci
The selective factors that shape phenotypic diversity in prey communities with aposematic animals are diverse and coincide with similar diversity in the strength of underlying secondary defences.
van den Berg CP   +7 more
europepmc   +5 more sources

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