10. Population Bio

10. Population Bio - Eggs laid on stalks Larva feeding On...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Green Lacewing Order: Neuroptera (Nerve Wing) Larvae Predatory Adult – feeds on pollen; nectar Holometabolous Larva feeding On caterpillar Eggs laid on stalks
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Defoliation of forest by gypsy moth caterpillars
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lecture 10 Population Biology A. What is a population? 1. Group of potentially interbreeding individuals (individuals make up population) 2. Continuity over time 3. Groups of populations that actually or potentially interbreed with each other = species
Background image of page 4
Population Biology B. Characteristics of populations 1. Size (numbers) 2. Density (numbers per unit area or host) 3. Distribution (clumped, random, uniform) 4. Variation (size, density, distribution) 5. Social behavior (interaction among members)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Population Biology 6. Genetics (gene pool) a. Genotype - genetic makeup b. Phenotype - interaction between genotype and the environment Genotype - the set of genes that an organism carries. Phenotype - all of its observable characteristics which are influenced both by its genotype and by the environment.
Background image of page 6
Genotype vs. Phenotype What is the genotype and what is the phenotype?
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Population Biology 7. Evolution (isolation = speciation) 8. Extinction
Background image of page 8
A. Study of changes in population size (measurements of population density) over time. B. Exponential growth curve - no limits to population size (house fly example). Two flies (female and male); female lays 100 eggs with sex ratio of 50 female:50 male 25 generations/year under ideal situation No mortality until “old age”
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/07/2009 for the course ECON 19993 taught by Professor Helms during the Spring '09 term at UC Davis.

Page1 / 27

10. Population Bio - Eggs laid on stalks Larva feeding On...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online