Khalaman V.V., Flyachinskaya L.P., Lezin P.A. 2009. [Impact of excretory-secretory products of some fouling organisms on settling of mussel’s larvae (Mytilus edulis L., Bivalvia, Mollusca)] // Invertebrate Zoology. Vol.6. No.1: 65–72 [in Russian, with English summary].

The White Sea Biological Station of Zoological Institute RAS, Universitetskaya nab., 1, S.-Petersburg, 199034 Russia. E-mail: Kartesh@gmail.com

KEY WORDS: fouling community, Mytilus edulis, Halichondria panicea, Hiatella arctica, Molgula citrina, Styela rustica, chemically-mediated interactions, larvae, settlement, the White Sea.

ABSTRACT: Complexity of succession of fouling communities in the White Sea induce to search some mechanisms that can be important in formation and recruitment of mussel fouling community as blue mussel is the object of cultivation. The impact of excretory-secretory products (ESP) of some fouling organisms (Halichondria panicea, Hiatella arctica, Molgula citrina, Mytilus edulis, Styela rustica) on settling of mussel’s larvae Mytilus edulis L. was estimated by means of laboratory experiments. Chemical cues of all tested animals accelerate the settling of larvae. The effect of ESP increases in following order: Hiatella arctica < Styela rustica £  Molgula citrina < Mytilus edulis < Halichondria panicea. ESP of sponge Halichondria panicea sharply stimulate settling, but conduce most part of larvae to death. Under the influence of chemical cues of adult conspecific animals most part of just settled mussel’s juveniles goes to float again.

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