feb 11 lecture

Introduction to Predator-Prey Dynamics

• Examining the relationships and interactions within ecosystems, particularly between species.

• Focus on the reed wobbler and cuckoo fledgling as case studies of behavior and selection pressures.

• Example of cannibal infanticide among lions highlights predatory behaviors.

Lion Behavior and Infanticide

• Male lions (cubs) often engage in infanticide targeting rival males' offspring.

• This behavior ensures that the male lion can sire his own young without competition.

• The necessity for control over territory and resources drives this violent action.

Arctic Wolf Family Dynamics

Family Structure and Parenting

• Snow White, an Arctic wolf, cares for her three pups in a harsh environment.

• Starvation rates are high; only 50% of the pups may survive to adulthood.

• Role of last year's pups becomes crucial as they must assist in caregiving.

Involvement of Black Spot

• Black Spot, an additional female, plays a significant role in the care of the pups.

• Her identity as either a sister or daughter figure to Snow White raises questions on pack lineage.

• The bonding seen through shared nursing is an unprecedented behavior recorded among wolves.

Den Protection and Rivalry

The Den and Its Challenges

• The den's location provides an advantage for protection during pup rearing.

• Importance of keeping pups hidden, warm, and dry to facilitate their growth and development.

Encounters with Rival Packs

• Rival packs frequently threaten established territories.

• A breeding pair from another pack conducts a raid on Snow White's den.

• The inability of Snow White to defend her pups showcases the brutal realities of wolf life.

• Demonstrates the tension and aggression inherent in animal territory disputes.