Animal Behavior What Is Behavior? • Behavior is anything an animal does in response to a stimulus. – A stimulus is an environmental change that directly influences the activity of an organism. – Example: Heat stimulates the lizard to seek shade. Behavior Patterns • Animals carry on many activities such as getting food, avoiding predators, caring for young, finding shelter, and attracting mates – that enable them to survive. – These behavior patterns, therefor have adaptive value. Inherited Behavior • Inheritance plays an important role in the way animals behave. – An animal’s genetic make-up determines how that animal reacts to certain stimuli. • Example: Birds flying south for the winter. Inherited Behaviors • Natural selection favors certain behaviors. – Individuals with behavior that makes them more successful at surviving and reproducing tend to produce more offspring than individuals without the behavior. • These offspring will inherit the genetic basis for successful behavior. Inherited Behavior • Inherited behavior of animals is called innate behavior. Two types of innate behavior: automatic and instinctive behavior – Example: As an insect moves across a toad’s line of sight, the insect detector cells in the toads retinas signal the brain, thus initiating an innate response; the toads tongue flipping out to capture the insect. Automatic Response • A fight-or-flight response mobilizes the • A reflex is a simple, body for greater automatic response to a activity. stimulus that involves – Your body is being no conscious control. prepared to fight or run (Simplest form of innate from danger behavior) – Controlled by hormones – Ex.: Touching something hot and pulling your hand back and the nervous system Instinctive Behavior • An instinct is a complex pattern of innate behavior. – Instinctive behavior begins when the animal recognizes a stimulus and continues until all parts of the behavior have been performed. Types of Instinctive Behavior • Courtship behavior ensures reproduction – Courtship behavior is the behavior that males and females of a species carry out before mating. • Territoriality reduces competition – A territory is a physical space an animal defends against other members of its species. Types of Instinctive Behavior • Aggressive behavior threatens other animals – Aggressive behavior is used to intimidate another animal of the same species. • Submission leads to dominance hierarchies – A dominance hierarchy is a form of social ranking within a group in which some individuals are subordinate than others. (pecking order) Types of Instinctive Behavior • Behavior resulting from internal and external cues – Circadian rhythms are a 24 hour, light-regulated, sleep/wake cycle of behavior. (keeps you alert during the day and helps you relax at night) – Migration is the instinctive, seasonal movement of animals. Types of Instinctive Behavior • Behavior resulting from internal and external cues continued – Hibernation is a state in which body temperature drops, oxygen consumption decreases, and breathing rates decline. – Estivation is a state of reduced metabolism that occurs in animals living in conditions of intense heat. Learned Behavior • Learning, or learned behavior, takes place when behavior changes through practice or experience. – Learning allows an animal to adapt to change, an ability that is important for animals with long life spans. Kinds of Learned Behavior • Habituation: A simple form of learning – Habituation occurs when an animal is repeatedly given a stimulus that is not associated with any type of punishment or reward. Example: horses or cows disregarding noisy cars. • Imprinting: A permanent attachment – Imprinting is a form of learning in which an animal, at a specific critical time of its life, forms a social attachment to another object. Example: duckling learning to recognize their mother and follow her for food and protection Kinds of Learned Behavior • Learning by trial and error – Trial and error learning is a type of learning in which an animal receives a reward for making a particular response. Examples: learning to ride a bike or birds using different materials to build a nest until it is just right – Motivation is an internal need that causes an animal to act, and is necessary for learning to take place. Kinds of Learned Behavior • Classical Conditioning is learning by association • Example: Ivan Pavlov’s classical conditioning experiment Kinds of Learned Behavior • Insight: the most complex type of learning – Insight is learning in which an animal uses previous experience to respond to a new situation.