Results 41 to 50 of about 1,833 (169)

Morphological and Ontogenetic Skin Color Changes in the American Alligator (Alligator mississippiensis)

open access: yesAnimals, 2023
To assess skin color change in alligators, we maintained animals in differently lighted environments and also measured skin colors in an ontogenetic series of wild animals. Juvenile alligators maintained in black enclosures exhibited a gradual lightening
Cadre Francis   +4 more
doaj   +1 more source

Age and Appearance Shape Behavioral Responses of Phasmids in a Dynamic Environment

open access: yesFrontiers in Ecology and Evolution, 2022
Although morphological adaptations leading to crypsis or mimicry have been studied extensively, their interaction with particular behaviors to avoid detection or recognition is understudied.
Sebastian Pohl   +7 more
doaj   +1 more source

Beyond Sexual Selection: Natural Selection Related Camouflage and Thermoregulation Shape Sexual Color Dimorphism in Diploderma Lizards

open access: yesIntegrative Zoology, EarlyView.
Integrating comparative spectrometry, image analysis, and thermal modeling, we reveal that (1) females optimize crypsis via background matching, (2) males prioritize high‐contrast disruptive patterning at a significant thermoregulatory cost (reduced solar heat gain), and (3) habitat‐specific monomorphism in Diploderma slowinskii underscores ecological ...
Yuning Cao, Lin Shi, Yin Qi
wiley   +1 more source

Managing the Threat of Subsidized Predators for a Threatened Shorebird

open access: yesAnimal Conservation, EarlyView.
Subsidized predators—native predators that have become more common due to human activities—challenge the persistence of many at‐risk prey species and require creative solutions beyond lethal predator control. In an 8‐year study, we placed small wire cages over western snowy plover nests that allow passage of plovers, but not their predators, and ...
R. R. Swaisgood   +4 more
wiley   +1 more source

Shell color polymorphism in marine gastropods

open access: yesEvolutionary Applications, 2023
Marine gastropods are characterized by an incredible variation in shell color. In this review, we aim to introduce researchers to previous studies of shell color polymorphism in this group of animals, trying to provide an overview of the topic and ...
Juan Gefaell   +2 more
doaj   +1 more source

Dynamic colour change predicts movement behaviour in a diadromous fish

open access: yesJournal of Fish Biology, EarlyView.
Abstract Dynamic changes in colour and pattern facilitate key behavioural functions in animals, particularly camouflage for predator avoidance. However, the benefits of colour change depend on the environmental and behavioural contexts. We tested how colour change interacts with movement behaviour in a freshwater fish by filming individuals in an open ...
Joshua S. Barrow, John R. Morrongiello
wiley   +1 more source

A hypothesis to explain accuracy of wasp resemblances

open access: yesEcology and Evolution, 2017
Mimicry is one of the oldest concepts in biology, but it still presents many puzzles and continues to be widely debated. Simulation of wasps with a yellow‐black abdominal pattern by other insects (commonly called “wasp mimicry”) is traditionally ...
Michael Boppré   +2 more
doaj   +1 more source

Continuous Variation in an Aposematic Pattern Affects Background Contrast, but Is Not Associated With Differences in Microhabitat Use

open access: yesFrontiers in Ecology and Evolution, 2022
Variation in aposematic signals was once predicted to be rare, yet in recent years it has become increasingly well documented. Despite increases in the frequency with which polytypism and polymorphism have been suggested to occur, population-wide ...
Justin Yeager, James B. Barnett
doaj   +1 more source

The state of knowledge on four families of Syngnathoidei fishes (Teleostei: Syngnathiformes): Aulostomidae, Centriscidae, Fistulariidae and Solenostomidae

open access: yesJournal of Fish Biology, EarlyView.
Abstract Knowledge on the ecology and life‐history traits of coastal marine species is vital to inform their conservation and management, especially as their coastal habitats come under increasing threats. However, such data have never been collated for four of the five families in the suborder Syngnathoidei—the close relatives of the better‐studied ...
Syd J. Ascione   +3 more
wiley   +1 more source

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

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