Results 71 to 80 of about 1,833 (169)

Australian Mistletoe‐Host Leaf Resemblance: Support for Eco‐Physiological Convergence Rather Than Disperser‐ or Herbivore‐Driven Mimicry

open access: yesAustral Ecology, Volume 51, Issue 6, June 2026.
ABSTRACT Presently, there are three main hypotheses to explain why the leaves of many Australian mistletoes resemble their hosts. The eco‐physiological convergence hypothesis suggests that mistletoes must manage their physiology, especially their water relations, to match those of the host, to avoid killing themselves or the host branch they have ...
J. J. Midgley
wiley   +1 more source

Venom in Furs: Facial Masks as Aposematic Signals in a Venomous Mammal

open access: yesToxins, 2019
The function of colouration in animals includes concealment, communication and signaling, such as the use of aposematism as a warning signal. Aposematism is unusual in mammals, and exceptions help us to understand its ecology and evolution.
K. Anne-Isola Nekaris   +6 more
doaj   +1 more source

Arboreal Duels in a Shared Niche: Direct Observations of Vinesnake (Thelotornis mossambicanus) Predation on Chameleons (Chamaeleo dilepis) Reveal Complex Foraging Dynamics

open access: yesAfrican Journal of Ecology, Volume 64, Issue 4, June 2026.
ABSTRACT Predator–prey interactions in three‐dimensional arboreal habitats are among the most complex and least observed ecological processes in terrestrial ecosystems. Here we report two predation events of the Eastern Vinesnake (Thelotornis mossambicanus) on the Flap‐necked Chameleon (Chamaeleo dilepis) in sand‐forest habitat of the Zambezi Delta ...
Avelino R. Miguel   +5 more
wiley   +1 more source

Past Pollution Can Shape Future Climatic Vulnerability: Fungicide Exposure Alters Detritivore Performance During Heatwaves and Recovery

open access: yesFreshwater Biology, Volume 71, Issue 6, June 2026.
ABSTRACT Natural populations are increasingly exposed to multiple stressors, such as chemical pollution and climate‐change‐driven heatwaves. While it has become clear that we need to account for stressor interactions, it is less well understood how sequential exposure to different stressors influences organismal responses as well as their potential for
Akshay Mohan   +2 more
wiley   +1 more source

Arthropods on native versus alien woody plants: Understanding variation across host plant taxonomy and geography

open access: yesEcosphere, Volume 17, Issue 5, May 2026.
Abstract Alien plants have generally been shown to support reduced arthropod abundance, biomass, and diversity compared to native plant species, but inferences have typically come from studies limited in taxonomic and geographic scope. Here, we make use of data from a unique citizen science project, Caterpillars Count!, that consists of nearly 70,000 ...
Colleen Whitener, Allen H. Hurlbert
wiley   +1 more source

Sequence variation in the melanocortin-1 receptor (MC1R) pigmentation gene and its role in the cryptic coloration of two South American sand lizards

open access: yesGenetics and Molecular Biology, 2012
In reptiles, dorsal body darkness often varies with substrate color or temperature environment, and is generally presumed to be an adaptation for crypsis or thermoregulation. However, the genetic basis of pigmentation is poorly known in this group.
Josmael Corso   +2 more
doaj  

High Contrast Markings Can Negate the Benefits of Transparent Camouflage

open access: yesEcology and Evolution
Transparency is, in theory, the ultimate form of concealment allowing for perfect background matching camouflage regardless of the environment. In nature, despite some remarkable examples of highly transparent organisms, physiological constraints mean ...
Justin Yeager   +3 more
doaj   +1 more source

Incubating parents serve as visual cues to predators in Kentish plover (Charadrius alexandrinus).

open access: yesPLoS ONE, 2020
Ground-nesting birds face many challenges to reproduce successfully, with nest predation being the main cause of reproductive failure. Visual predators such as corvids and egg-eating raptors, are among the most common causes of nest failure; thus ...
Noémie Engel   +4 more
doaj   +1 more source

Crypsis in Montaigne's Essays

open access: yes, 2012
« A sauts et à gambades » : de cette formule des Essais, la critique a souvent conclu au décousu de leur écriture. Notre travail montre qu'il n'en est rien dans de nombreux chapitres des Essais, en s'appuyant sur l'idée de « cryptique » chez Ramus (Dialectique, 1555) et Canaye (L'Organe, 1589) et sur le concept rhétorique de ductus ou progression du ...
openaire   +2 more sources

Genetic and behavioural factors affecting interpopulation colour pattern variation in two congeneric chameleon species

open access: yesRoyal Society Open Science
We conducted a study on interpopulation variation of colour patterns in two congeneric chameleon species, which have an analogous life history. Both species are able to rapidly change colour pattern, and their context-dependent colour patterns often vary
Tammy Keren-Rotem   +9 more
doaj   +1 more source

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