Chemical Deterrence of a Cyanobacterial Metabolite against Generalized and Specialized Grazers

Pitipeptolide A is the major secondary metabolite in a persistent population of the cyanobacterium Lyngbya majuscula from Guam. Because this cyanobacterium is of low preference to many sympatric consumers, we tested the hypothesis that this compound acted as a chemical defense. Pitipeptolide A was d...

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Bibliographic Details
Published in:Journal of chemical ecology 2007-01, Vol.33 (1), p.213-217
Main Authors: Cruz-Rivera, Edwin, Paul, Valerie J
Format: Article
Language:English
Subjects:
Algae
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Aplysia
Autoecology
Biological and medical sciences
Chemical defense
Coral reefs
Crustaceans
Cyanobacteria
Cyanobacteria - metabolism
Cyanophyta
Decapoda
Depsipeptides - pharmacology
Deterrence
Feeding Behavior
Fundamental and applied biological sciences. Psychology
Lyngbya majuscula
Metabolites
Plants and fungi
Secondary metabolites
Stylocheilus striatus
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Summary:Pitipeptolide A is the major secondary metabolite in a persistent population of the cyanobacterium Lyngbya majuscula from Guam. Because this cyanobacterium is of low preference to many sympatric consumers, we tested the hypothesis that this compound acted as a chemical defense. Pitipeptolide A was deterrent to urchins, two species of amphipods, and small herbivorous crabs, whereas it did not deter feeding by the sea hare Stylocheilus striatus, which readily consumes cyanobacteria. Although our comparison included various small invertebrates, which are often tolerant to algal chemical defenses, this cyanobacterial compound proved deterrent at natural concentrations to all but one of the consumer species tested. Thus, the production of defensive secondary metabolites is likely related to the common occurrence of L. majuscula on this coral reef despite the abundance of diverse grazers.
ISSN:0098-0331
1573-1561
DOI:10.1007/s10886-006-9212-y