Behavioral Ecology

Lesson 1: Inheritance Influences Behavior

Behavior: any observable and describable action.
Nature vs Nurture: explores how genetics and environment shape behavior. There is significant evidence supporting a genetic basis for various behaviors.

Nest-Building in Lovebirds: Fischer and peach-faced lovebirds exhibit different nesting behaviors. Hybrid offspring struggle with nest material, indicating genetic influences on their behavior.
Twin Studies in Humans: Twins raised in different environments show similar preferences, suggesting a genetic basis.
Food Choices in Garter Snakes: Inland garter snakes and coastal counterparts have different food preferences; hybrids accept slugs, indicating inherited behavior.

Marine Snails (Aplysia)Egg-laying hormone (ELH) dictates behavior; produced by the ELH gene.
Maternal Care in Mice: Nurturing behavior is governed by the fosB gene.

Fixed Action Patterns (FAPs)Initially viewed as instinctive reactions to environmental stimuli; recent studies show improvements through practice.
Instinct and Learning Correlation: Durable behavioral changes occur due to experience; ex: pecking behavior improves with practice in laughing gulls.

Imprinting: Occurs when young animals associate with the first moving object they encounter; essential for survival and reproductive success. Example: Goslings following moving objects post-birth, including humans.
Social Interactions and Learning: Critical for development of behaviors, particularly in songbirds during sensitive periods.

Change in behavior due to association between two events.
- Classical Conditioning: Involves learning through the association of a neutral stimulus with a significant stimulus, exemplified by Pavlov's dogs.
- Operant Conditioning: Involves learning through the consequences of behavior, where actions are reinforced or punished, shaping future behavior.

Migration: Long-distance seasonal movement; Monarch butterflies migrate to/from Mexico annually.
Orientation: Ability to travel in specific directions based on environmental cues (e.g., sun and stars).

Communication: Sender actions intended to influence receiver behavior; can be purposeful or incidental.

Chemical Communication: Use of pheromones to send signals; e.g., territory marking in cheetahs.
Auditory Communication: Communication through sound; faster than chemical methods, used by humans and many animals.
Visual Communication: Utilized by daytime active species, including displays of dominance (e.g., baboons, fireflies).
Tactile Communication: Involves touch-based communication; e.g., honeybees' waggle dance to share food location.

Behavioral Ecology: Studies how natural selection influences behavior, often linked to increased survival and reproductive success.
Territoriality: Defending a territory provides advantages such as access to food and mates, but it also requires energy expenditure. This behavior is especially common during reproductive periods.

Animals invest effort in acquiring food that provides more energy than required.
Optimal Foraging Model: Foraging adaptations prioritize energy efficiency, which impacts both the behavior and anatomical features of animals.

One male mates with one female.
Both male and female help with raising the young.
occurs when male has limited mating opportunities, territoriality exits, and the male is sure the off-springs are his.

Sexual Selection: Natural selection based on mate preference, which may enhance mating success despite survival costs.

Societies and Fitness: Social structures improve individual fitness through collaboration and resource access.

Altruism vs. Self-Interest: