Algal Epizooism

David L. BallantineDept. Marine Sciences

University of Puerto RicoMayagüez, Puerto Rico

Schizothrix Cover

0

10

20

30

40

50

60

Sep-03 May-04 Oct-04 Mar-05 Sep-05

% Cover

Hoyo

Weinberg

Schizothrix Cover

Metapeyssonnelia effects on Millepora

at San Cristobal and Mario Reefs

Determine incidence of occurrence on live coral

Determine % of colony tissue killed

Determine rate of spreading on coral tissue

Determine toxicity effects of crude algal extracts on livingcoral tissue

SigmaScan 5.0

Metapeyssonnelia Growth

2.4

2.45

2.5

2.55

2.6

2.65

2.7

2.75

2.8

2.85

11/22/2005 12/12/2005 1/26/2006

Date

Distance (cm)

0.245 mm/period0.012 mm/day

Algal Advance

Area Increase

8.9%/period0.49%/day