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Gregory R. Johnston

Researcher at Flinders University

Publications -  24
Citations -  693

Gregory R. Johnston is an academic researcher from Flinders University. The author has contributed to research in topics: Population & Skink. The author has an hindex of 9, co-authored 24 publications receiving 606 citations. Previous affiliations of Gregory R. Johnston include South Australian Museum & University of Adelaide.

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Evolution of color variation in dragon lizards: quantitative tests of the role of crypsis and local adaptation.

TL;DR: The results confirmed that there are real differences in crypsis conspicuousness both between populations and between sexes; that exposed body regions were significantly more cryptic than hidden ones, particularly in females; and that females, but not males, are more cryptic against their own local background than against the background of other populations.
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Recognition of Pheromones from Group Members in a Gregarious Lizard, Egernia stokesii

TL;DR: The results imply that individuals in this lizard species can discriminate between two other lizards de- pending on whether they do or do not belong to the same social group, and that an important component of social cohesion, the ability to recognize group members, is present in this gregarious lizard species.
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Vibrational Signaling in the Agonistic Interactions of Red-Eyed Treefrogs

TL;DR: It is demonstrated that plant-borne vibrations generated by the shaking (tremulation) display of male red-eyed treefrogs (Agalychnis callidryas) are a vibrational signal, necessary and sufficient to elicit tremulations in response and suggested that consideration of the vibrational modality may significantly broaden the authors' appreciation of the behavior and evolution of arboreal vertebrates.
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Group living in squamate reptiles: a review of evidence for stable aggregations.

TL;DR: It is suggested that stable aggregations have evolved multiple times in squamates, and the potential for utilising reproductive skew theory to provide insights into squamate sociality is outlined.
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Experience overrides colour in lizard contests

TL;DR: Although colour is important in opponent assessment and in determining contest outcome in C. vadnappa, previous agonistic experience can override the effects of colour and have a long-lasting influence on aggressive behaviour.