Results 81 to 90 of about 7,133 (207)

Cuttlefish responses to visual orientation of substrates, water flow and a model of motion camouflage [PDF]

open access: yes, 2006
Low-level mechanisms in vertebrate vision are sensitive to line orientation. Here we investigate orientation sensitivity in the cuttlefish Sepia pharaonis, by allowing animals to settle on stripe patterns.
Anderson, J C   +4 more
core   +3 more sources

A PCR–RFLP Assay for Identifying the Cryptic Australian Endemic Plutella australiana From Invasive Plutella xylostella

open access: yesAustral Entomology, Volume 65, Issue 2, May 2026.
ABSTRACT Plutella xylostella, diamondback moth, is a major invasive worldwide pest. In Australia, a local Plutella known as P. australiana is almost morphologically indistinguishable from P. xylostella. Therefore, we developed a PCR–restriction fragment length polymorphism (PCR–RFLP) assay targeting the mitochondrial COI gene to differentiate the two ...
Hareem Qazi   +2 more
wiley   +1 more source

Ineffective crypsis in a crab spider: a prey community perspective [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2009
Cryptic coloration is assumed to be beneficial to predators because of an increased encounter rate with unwary prey. This hypothesis is, however, very rarely, if ever, studied in the field. The aim of this study was to quantify the encounter rate and capture success of an ambush predator, in the field, as a function of its level of colour ...
Brechbühl, Rolf   +2 more
openaire   +4 more sources

Selection of perching site background color by Hamadryas feronia (Lepidoptera: Nymphalidae) in Costa Rica: Implications for industrial melanism

open access: yesRevista de Biología Tropical, 2012
Observations of the increased frequency of melanic forms in moths of the genus Biston in Great Britain after the industrial revolution lead to the development of the theory of industrial Melanism. Nonetheless, arguments against that interpretation of the
Luis Ricardo Murillo-Hiller
doaj   +2 more sources

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  

Recombination suppression in plant adaptation and speciation

open access: yesNew Phytologist, Volume 250, Issue 4, Page 2061-2077, May 2026.
Summary Recombination suppression is increasingly recognized as an important facilitator of genomic divergence and speciation, especially under ongoing gene flow. In plants, however, the broader evolutionary consequences and the mechanisms by which recombination suppression arises and spreads are still incompletely understood, reflecting the inherent ...
Xu Zhang   +4 more
wiley   +1 more source

Estimating the abundance of clustered and cryptic marine macro-invertebrates in the Galápagos with particular reference to sea cucumbers [PDF]

open access: yes, 2003
Estimating the abundance of marine macro-invertebrates is complicated by a variety of factors: 1) human factors, such as diver efficiency and diver error; and 2) biological factors, such as aggregation of organisms, crypsis, and nocturnal emergence ...
Edgar, G.J.   +2 more
core  

Defeating Crypsis: Detection and Learning of Camouflage Strategies

open access: yesPLoS ONE, 2013
Camouflage is perhaps the most widespread defence against predators in nature and an active area of interdisciplinary research. Recent work has aimed to understand what camouflage types exist (e.g. background matching, disruptive, and distractive patterns) and their effectiveness.
Troscianko, Jolyon   +3 more
openaire   +5 more sources

Distribution and Communities of Crypsis Aculeata and Heleochloa Schoenoides in Slovakia [PDF]

open access: yesHacquetia, 2008
Distribution and Communities ofCrypsis AculeataandHeleochloa Schoenoidesin SlovakiaThe distribution and communities of two annual grassesCrypsis aculeataandHeleochloa schoenoideswere studied in Slovakia during 2003-2007. Herbarium and field data were used to reconstruct the occurrence of both taxa. A strong decline inC. aculeatalocalities was observed.
Dítě, Daniel   +3 more
openaire   +2 more sources

Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long‐snouted dolphin

open access: yesThe Anatomical Record, Volume 309, Issue 4, Page 853-863, April 2026.
Abstract Analyses of the cetacean (whale and dolphin) inner ear provide glimpses into the ecology and evolution of extinct and extant groups. The paleoecology of the long‐snouted odontocete (toothed whale) group, Parapontoporia, is primarily marine with its depositional context also suggesting freshwater tolerance.
Joyce Sanks, Rachel Racicot
wiley   +1 more source

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