Effects of ocean acidification on the shells of four Mediterranean gastropod species near a CO2seep

Marco Milazzo, Alberto Pérez-Huerta, Ashley Duquette, James B. Mcclintock, Jason M. Hall-Spencer, Charles D. Amsler

Risultato della ricerca: Articlepeer review

20 Citazioni (Scopus)

Abstract

Marine CO2seeps allow the study of the long-term effects of elevated pCO2(ocean acidification) on marine invertebrate biomineralization. We investigated the effects of ocean acidification on shell composition and structure in four ecologically important species of Mediterranean gastropods (two limpets, a top-shell snail, and a whelk). Individuals were sampled from three sites near a volcanic CO2seep off Vulcano Island, Italy. The three sites represented ambient (8.15 pH), moderate (8.03 pH) and low (7.73 pH) seawater mean pH. Shell mineralogy, microstructure, and mechanical strength were examined in all four species. We found that the calcite/aragonite ratio could vary and increased significantly with reduced pH in shells of one of the two limpet species. Moreover, each of the four gastropods displayed reductions in either inner shell toughness or elasticity at the Low pH site. These results suggest that near-future ocean acidification could alter shell biomineralization and structure in these common gastropods.
Lingua originaleEnglish
pagine (da-a)917-928
Numero di pagine12
RivistaMarine Pollution Bulletin
Volume124
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • Aquatic Science
  • Oceanography
  • Pollution
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