Your browser doesn't support javascript.
loading
Effect of low pH on growth and shell mechanical properties of the Peruvian scallop Argopecten purpuratus (Lamarck, 1819).
Córdova-Rodríguez, Kathy; Flye-Sainte-Marie, Jonathan; Fernández, Ernesto; Graco, Michelle; Rozas, Anibal; Aguirre-Velarde, Arturo.
Afiliação
  • Córdova-Rodríguez K; Ciencias del Mar, Universidad Peruana Cayetano Heredia, Honorio Delgado 444, Lima, Peru. Electronic address: kathy.cordova.r@upch.pe.
  • Flye-Sainte-Marie J; LEMAR, UMR 6539 (UBO/CNRS/IRD/Ifremer), IUEM, Rue Dumont d'Urville, 29280, Plouzané, France.
  • Fernández E; Instituto del Mar del Perú (IMARPE), Esq. General Valle y Gamarra s/n, Chucuito, Callao, Peru.
  • Graco M; Ciencias del Mar, Universidad Peruana Cayetano Heredia, Honorio Delgado 444, Lima, Peru; Instituto del Mar del Perú (IMARPE), Esq. General Valle y Gamarra s/n, Chucuito, Callao, Peru.
  • Rozas A; Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima, Peru.
  • Aguirre-Velarde A; Instituto del Mar del Perú (IMARPE), Esq. General Valle y Gamarra s/n, Chucuito, Callao, Peru.
Mar Environ Res ; 177: 105639, 2022 May.
Article em En | MEDLINE | ID: mdl-35512586
Dissolution of anthropogenic CO2 modifies seawater pH, leading to ocean acidification, which might affect calcifying organisms such as bivalve mollusks. Along the Peruvian coast, however, natural conditions of low pH (7.6-8.0) are encountered in the habitat of the Peruvian scallop (Argopecten purpuratus), as a consequence of the nearby coastal upwelling influence. To understand the effects of low pH in a species adapted to these environmental conditions, an experiment was performed to test its consequences on growth, calcification, dissolution, and shell mechanical properties in juvenile Peruvian scallops. During 28 days, scallops (initial mean height = 14 mm) were exposed to two contrasted pH conditions: a control with unmanipulated seawater presenting pH conditions similar to those found in situ (pHT = 7.8) and a treatment, in which CO2 was injected to reduce pH to 7.4. At the end of the experiment, shell height and weight, and growth and calcification rates were reduced about 6%, 20%, 9%, and 10% respectively in the low pH treatment. Mechanical properties, such as microhardness were positively affected in the low pH condition and crushing force did not show differences between pH treatments. Final soft tissue weights were not significantly affected by low pH. This study provides evidence of low pH change shell properties increasing the shell microhardness in Peruvian scallops, which implies protective functions. However, the mechanisms behind this response need to be studied in a global change context.
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Água do Mar / Pectinidae Limite: Animals País/Região como assunto: America do sul / Peru Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Água do Mar / Pectinidae Limite: Animals País/Região como assunto: America do sul / Peru Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Reino Unido