Settlement performance of the Mediterranean reef-builders Dendropoma cristatum (Biondi 1859) in response to natural bacterial films

Valentina Catania, Renato Chemello, Marco Milazzo, Paola Quatrini, Emanuela Claudia La Marca, Emanuela Claudia La Marca, Renato Chemello, Marco Milazzo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The gastropod Dendropoma cristatum is a biogenic engineer of the central Mediterranean, forming reefs along the lower rocky intertidal fringe with a remarkable ecological role. To understand whether reef-associated biofilm cultivable bacterial and biofilm ageing may trigger the settlement of the juvenile snails, a combination of laboratory techniques and field experiments was used. Reef-associated biofilm cultivable bacteria were isolated, and a settlement-choice experiment was performed in situ on artificial biofilms composed of i) a mixture of six biofilm-forming selected isolates, ii) all the cultivable bacteria, and iii) 13-, 23-, 32-day old biofilms formed under naturalconditions. Overall,settlement ratesignificantlydifferedamong biofilmtreatments(p < 0.0001). A significant positive correlation between biofilm ageing and juvenile D. cristatum settlement was assessed (r=0.69 (p < 0.001), whereas the biofilm bacterial composition (relatively to the cultivable fraction) did not show any effect on the vermetid's settlement rate.
Original languageEnglish
Number of pages8
JournalMarine Environmental Research
Volume137
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

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