Podcast
Questions and Answers
What primarily limits a generalist predator's choice of prey?
What primarily limits a generalist predator's choice of prey?
- The experience of the predator in hunting
- Energy used to catch prey and calorie gain (correct)
- The number of predators in the area
- The time of year and weather conditions
What factor controls the population size of owls, according to the information provided?
What factor controls the population size of owls, according to the information provided?
- Competition with other predators
- Abundance of prey species alone
- Seasonal changes in climate
- Availability of territories (correct)
How do climatic factors affect lion populations in the Serengeti?
How do climatic factors affect lion populations in the Serengeti?
- They regulate the birth rates of the prey species
- They determine the number of available mates
- They control survival during dry seasons (correct)
- They cause migrations to new territories
What happens to a predator's feeding behavior when a particular prey type becomes abundant?
What happens to a predator's feeding behavior when a particular prey type becomes abundant?
What is the typical response of a predator when the population of its primary prey species is reduced?
What is the typical response of a predator when the population of its primary prey species is reduced?
What is a characteristic of energy maximisers among predators?
What is a characteristic of energy maximisers among predators?
Which of the following best describes time minimizers in predator strategies?
Which of the following best describes time minimizers in predator strategies?
What defines a specialist predator?
What defines a specialist predator?
Which predator relies primarily on snowshoe hares for its diet?
Which predator relies primarily on snowshoe hares for its diet?
What type of energy strategy do active hunters use?
What type of energy strategy do active hunters use?
How do antlions catch their prey?
How do antlions catch their prey?
What effect do lynxes have on snowshoe hare populations?
What effect do lynxes have on snowshoe hare populations?
Which predator is considered a key predator for controlling prey populations?
Which predator is considered a key predator for controlling prey populations?
What is a primary factor that allows different predator species to coexist?
What is a primary factor that allows different predator species to coexist?
Which predator uses its speed to specialize in catching prey?
Which predator uses its speed to specialize in catching prey?
What is one of the benefits of group living for prey animals?
What is one of the benefits of group living for prey animals?
How do crows utilize group defense against predators?
How do crows utilize group defense against predators?
What hunting strategy do hunting dogs use to catch large prey?
What hunting strategy do hunting dogs use to catch large prey?
Which prey strategy is NOT mentioned as a way to reduce predation?
Which prey strategy is NOT mentioned as a way to reduce predation?
What characteristic allows zebras to effectively participate in group defense?
What characteristic allows zebras to effectively participate in group defense?
What is a disadvantage of group living for prey animals?
What is a disadvantage of group living for prey animals?
Flashcards
Energy Maximizer Predator
Energy Maximizer Predator
Predators who actively hunt and capture prey using energy-intensive methods. They often target the weakest prey for easier capture.
Time Minimizer Predator
Time Minimizer Predator
Predator species that conserve energy by waiting for prey to come to them. They often have a wide range of prey types.
Specialist Predator
Specialist Predator
Predators that specialize in hunting a limited number of prey species, usually just one. This allows them to develop highly efficient methods for catching their preferred targets.
Key Predator
Key Predator
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Non-Key Predator
Non-Key Predator
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Predator-Prey Oscillation
Predator-Prey Oscillation
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Predator Adaptability
Predator Adaptability
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Predator Prey Selection
Predator Prey Selection
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Generalist Predator
Generalist Predator
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Generalist Predator Abundance Control
Generalist Predator Abundance Control
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Specialist Predator Abundance Control
Specialist Predator Abundance Control
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Predator-Prey Fluctuations
Predator-Prey Fluctuations
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Predator Niches
Predator Niches
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Hunting Specialization
Hunting Specialization
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Prey Strategies
Prey Strategies
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Group Living
Group Living
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Group Defense
Group Defense
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Combined Sensory Advantage
Combined Sensory Advantage
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Confusion in Group Defense
Confusion in Group Defense
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Center of the Herd
Center of the Herd
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Study Notes
Predator Strategies and Prey Populations
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Predator strategies vary in the energy used for hunting, categorized as energy maximizers (high energy) and time minimizers (low energy)
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Energy maximizers actively hunt their prey, requiring frequent catches to replenish energy
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Time minimizers are inactive predators who wait for prey to come to them
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Time minimizers use little energy and must be adaptable
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Predators also vary in the number of prey types they consume, categorized into specialists (few prey types) and generalists (many prey types)
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Specialists feed on a limited number of prey, maximizing efficiency in finding and catching that specific prey
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Generalists feed on a large variety of prey, limiting their choice due to energy expenditure and prey size.
Prey Strategies
- Prey employ various strategies to evade predators and maintain population numbers
- Prey with highly developed senses are better able to detect predators from a distance
- Speed is a crucial defensive mechanism for some prey species
- Hiding is a common defensive strategy
- Some prey possess defense mechanisms like being poisonous or venomous
- Group living, such as herds or flocks, can enhance predator avoidance due to increased predator detection capabilities.
Predator-Prey Interactions
- Predator and prey populations often fluctuate in cycles
- Lynx and snowshoe hare populations show a notable 9-11 year cycle
- Prey abundance often influences predator population size. If a prey population crashes, so will its predator
- A predator may switch to a different prey if its primary prey becomes scarce
- Competition between predators can lead to specialization of hunting strategies
- Different hunting strategies can allow coexistence of predators.
Prey Population Abundance
- Generalist predators are influenced by factors other than prey abundance, such as territory availability and survival during unfavorable seasons (e.g., dry season).
- Prey abundance can affect the predator's food choice, with predators concentrating their efforts on the most abundant prey types.
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