Exam 14: Predation and Herbivory

The crucian carp (Carassius carassius) develops a muscular hump on its back that increases its acceleration in response to predators. This is an example of

The Indian grey mongoose (Herpestes edwardsii) is a small mammal that is known for its ability to kill venomous king cobras (Ophiophagus hannah). Mongooses have evolved acetylcholine receptors that make them resistant or immune to the cobra's venom. What is likely responsible for this?

What is the driving force in the 10-year cycle of lynx and hare abundance?

Which is a warning colouration?

The introduction of the brown tree snake (Boiga irregularis) to Guam decimated the native fauna because

Australian authorities removed dingoes and feral dogs because they killed sheep. As a result

In Lotka-Volterra models, a population is stable when its rate of change is

In experiments with the backswimmer (Notonecta glauca), a predatory insect, and two types of prey species, isopods (Asellus aquaticus) and mayflies (Coeon dipterum), predator preference seemed to be affected by the percent of mayflies. What explains the results presented in the figure? What type of functional response is being demonstrated?

At the joint equilibrium point

The viceroy (Limenitis archippus) is an unpalatable North American butterfly that has colouration similar to that of another species of unpalatable butterfly, the monarch (Danaus plexippus). This is an example of

How was the invasive plant the Saint-John's-wort controlled in California?

The figure shows results of a study in which scientists observed the responses of tadpoles to a caged predator and an empty control cage in tubs of water. The caged predator emitted a chemical that alerted the tadpoles to its presence but was not able to kill tadpoles. Based on the figure, how did tadpoles respond to the experiment, and what type of defence did they exhibit?

In Lotka-Volterra predator-prey models, predator populations decrease when

The graphs show the result of experiments involving the crop pest the California red scale insect Aonidiella aurantii and the parasitoid wasp Aphytis melinus. What did the results show about the populations of wasps and scale insects on control and outbreak trees? Is the parasitoid wasp a good biocontrol candidate for reducing scale insects?

Reduced growth and development due to reduced feeding and foraging activity is a cost of

Lotka-Volterra models of predator-prey interactions show that

A type _____ functional response occurs when a predator's rate of prey consumption increases linearly with increasing prey and then satiates.

Which would be considered a mesopredator?

Plants that respond to herbivory by increasing their growth rate (compensatory growth) are using

Researchers studying production of nicotine in tobacco plants (Nicotiana sylvestris) treated some of the plants with a hormone that prevents the chemical defences from responding to herbivory. What did they find to be the cost of nicotine production?