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Invasion and the evolution of speed in toads
Cane toads (Bufo marinus) are large anurans (weighing up to 2 kg) that were introduced to Australia 70 years ago to control insect pests in sugar-cane fields. But the result has been disastrousExpand
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Life-history evolution in range-shifting populations.
Most evolutionary theory does not deal with populations expanding or contracting in space. Invasive species, climate change, epidemics, and the breakdown of dispersal barriers, however, all createExpand
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An evolutionary process that assembles phenotypes through space rather than through time
In classical evolutionary theory, traits evolve because they facilitate organismal survival and/or reproduction. We discuss a different type of evolutionary mechanism that relies upon differentialExpand
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Reid’s Paradox Revisited: The Evolution of Dispersal Kernels during Range Expansion
Current approaches to modeling range advance assume that the distribution describing dispersal distances in the population (the “dispersal kernel”) is a static entity. We argue here that dispersalExpand
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Measurement versus estimation of condition in snakes
Because variation in fat reserves (i.e., condition) is expected to contribute to variation in survival and reproductive success, zoologists often wish to estimate the condition of the animals theyExpand
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Body size, age distribution, and reproduction in a northern population of wood turtles (Clemmys insculpta)
A population of the wood turtle (Clemmys insculpta) was studied on the east side of Algonquin Provincial Park, Ontario, from 1987 to 1990. A total of 77 adults (56 females, 21 males) and 13 juvenilesExpand
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Evolutionarily accelerated invasions: the rate of dispersal evolves upwards during the range advance of cane toads
Human activities are changing habitats and climates and causing species’ ranges to shift. Range expansion brings into play a set of powerful evolutionary forces at the expanding range edge that actExpand
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Parasites and pathogens lag behind their host during periods of host range advance.
The process of rapid range expansion (as seen in many invasive species, and in taxa responding to climate change) may substantially disrupt host-parasite dynamics. Parasites and pathogens can haveExpand
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Measuring amphibian immunocompetence: validation of the phytohemagglutinin skin-swelling assay in the cane toad, Rhinella marina
Summary 1. Measuring the degree of skin-swelling induced by intradermal injection of phytohemagglutinin (PHA) is simple, quick and inexpensive, does not require specialized equipment and isExpand
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THERMAL ECOLOGY AND SEXUAL SIZE DIMORPHISM IN NORTHERN WATER SNAKES, NERODIA SIPEDON
We used more than 326 000 observations of temperature collected by radio telemetry from 38 individuals over three years to investigate thermoregulation and thermal relations of northern water snakesExpand
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