Chapter 14 Flashcards
Migration
movements to a from mating/feeding sites
Obligatory vs Irruptive migration
regularly
only when conditions are poor
Costs of migration
dangerous, weight loss, adapt to different environments, habitat loss
Benefits of migration
avoid bad environments and starving, avoid predation and competition,
Migration effects on reproductive fitness
can produce more offspring with lower predation if stays, migration reduces time to reproduce, fewer young, high predation/competition if goes
Migration effects on adult survival
endure winter, migration allows for better winter survival, always favorable environment migrated to
Nomadic
moving around based on resource availability
Navigation
using cues to determine where you are in relation to where you’re going
Piloting
locating resources based on its relationship to fixed cues
Tinbergen wasp study
arrangement matters more than the object