LIFE HISTORY STRATEGY
This presentation is the property of its rightful owner.
Sponsored Links
1 / 24

LIFE HISTORY STRATEGY PowerPoint PPT Presentation


  • 44 Views
  • Uploaded on
  • Presentation posted in: General

LIFE HISTORY STRATEGY. Life History Strategy A suite of traits that improve an individual's chances of surviving and reproducing in a particular environment. COST/BENEFIT ANALYSIS. Energy commited to one function is not available for others.

Download Presentation

LIFE HISTORY STRATEGY

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Life history strategy

LIFE HISTORY STRATEGY


Life history strategy

Life History Strategy

A suite of traits that improve an individual's chances of surviving and reproducing in a particular environment


Life history strategy

COST/BENEFIT ANALYSIS

Energy commited to one function is not available for others.

2.Every evolutionary ‘choice’ has costs and benefits

3.Every organism represents a compromise of a number of evolutionary ‘choices’


Life history strategy

Macarthur and Wilson (‘70’s) - Theory of Island Biogeography

r strategists K strategists

Opportunistic

-rapidly colonizing, fast growth

Equilibrium

-slower colonizing, slow growth


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms


Life history strategy

Attributes of r and K - selected organisms

Productivity


Life history strategy

Attributes of r and K - selected organisms

Productivity

Efficiency


Life history strategy

r - K continuum

r-strategistK-strategist


Life history strategy

r - K continuum

r-strategistK-strategist

Frequent disturbanceLess frequent disturbance


Life history strategy

Aclonal Life History

recruitment

Sexual reproduction

Death


Life history strategy

Clonal Life History

Sexual reproduction

recruitment

Fission

Fission

Fission

Death


Life history strategy

Fertilization Patterns

1. External (no copulation)


Life history strategy

Fertilization Patterns

1. External (no copulation)

Problems

Gamete output

Synchrony

Gamete dispersal

Gamete dilution


Life history strategy

Fertilization Patterns

1. External (no copulation)

Problems

100

Gamete output

% success

Synchrony

Gamete dispersal

Gamete dilution

0.5 m

Distance between individuals


Life history strategy

Fertilization Patterns

1. External (no copulation)

Allee Effect

Reproductive

rate

Number or Density


Life history strategy

Fertilization Patterns

2. Internal (no copulation)

For oyster spawning video:www.umces.edu/ 2002Session/oyster.html


Life history strategy

Fertilization Patterns

2. Internal (copulation)


  • Login