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ANTIFEEDING DEFENSE IN BALTIC MACROALGAE: INDUCTION BY DIRECT GRAZING VERSUS WATERBORNE CUES 1
Author(s) -
Rohde Sven,
Wahl Martin
Publication year - 2008
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.2007.00451.x
Subject(s) - biology , fucus , fucus vesiculosus , algae , grazing , botany , baltica , chemical defense , palatability , allelopathy , ecology , zoology , herbivore , germination , food science , paleontology , ordovician
The prevalence of antigrazing defense induction and the cues triggering induction in marine macroalgae are generally not well understood. We examined the capacity of defense and the mechanisms of regulation in five common perennial macroalgal species from the Baltic Sea, Furcellaria lumbricalis (Huds.) J. V. Lamour. , Delesseria sanguinea (Huds.) J. V. Lamour. , Phyllophora pseudoceranoides (S. G. Gmel.) Newroth et A. R. A. Taylor , Fucus serratus L., and Fucus evanescens C. Agardh. Specifically, we investigated whether direct feeding and/or waterborne cues from feeding on neighboring conspecifics decreased the palatability of the tested algae. Direct feeding by the local isopod Idotea baltica triggered the induction of chemical defense in Fur. lumbricalis, D. sanguinea, P. pseudoceranoides , F. serratus, and F. evanescens . Conversely, we did not find any evidence for waterborne cues associated with feeding to trigger defense induction in neighboring conspecifics.