pcb 3044 chapter 7 - Chapter 7: Life History Analyses...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 7: Life History Analyses Introduction An organism’s life history is a record of events relating to its growth, development, reproduction, and survival. Characteristics that define the life history of an organism: o Age and size at sexual maturity. o Amount and timing of reproduction. o Survival and mortality rates. Figure 7.3 Life History Strategy Life History Diversity Phenotypic plasticity: One genotype may produce different phenotypes under different environmental conditions. Morphs: Discrete types (few or no intermediate forms) Polyphenism: multiple discrete phenotypes. Figure 7.4: Plasticity of Growth Form in Ponderosa Pines o Desert: Shorter, but thicker trunks. o Allometry: Differential growth of body parts in response to changes in environment. Figure 7.5: Polyphenism in Spadefoot Toad Tadpoles in Arizona o Omnivores feed on the pond bottom on detritus o Carnivores feed in the water column on fairy shrimp. Life History Diversity: Modes of Reproduction
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/13/2009 for the course PCB PCB 3044 taught by Professor Woo during the Fall '09 term at University of Central Florida.

Page1 / 2

pcb 3044 chapter 7 - Chapter 7: Life History Analyses...

This preview shows document pages 1 - 2. Sign up to view the full document.

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