FN Archimer Export Format
PT J
TI Effect of low pH on growth and shell mechanical properties of the Peruvian scallop Argopecten purpuratus (Lamarck, 1819)
BT 
AF Córdova-Rodríguez, Kathy
   Flye-Sainte-Marie, Jonathan
   Fernández, Ernesto
   Graco, Michelle
   Rozas, Anibal
   Aguirre-Velarde, Arturo
AS 1:1;2:2;3:3;4:1,3;5:;6:2;
FF 1:;2:;3:;4:;5:;6:;
C1 Ciencias del Mar, Universidad Peruana Cayetano Heredia, Honorio Delgado 444, Lima, Peru
   LEMAR, UMR 6539 (UBO/CNRS/IRD/Ifremer), IUEM, Rue Dumont d'Urville, 29280, Plouzané, France
   Instituto del Mar del Perú (IMARPE), Esq. General Valle y Gamarra s/n, Chucuito, Callao, Peru
   Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima, Peru
C2 UNIV PERUANA CAYETANO HEREDIA, PERU
   UBO, FRANCE
   IMARPE, PERU
   UNIV PONTIFICIA CATOLICA PERU, PERU
UM LEMAR
IN WOS Cotutelle UMR
   copubli-int-hors-europe
   copubli-sud
IF 3.3
TC 1
UR https://archimer.ifremer.fr/doc/00769/88094/94921.pdf
LA English
DT Article
DE ;Ocean acidification;Low pH;Pectinid;Growth;Shell;Microhardness;Crushing force;Calcification;Upwelling systems
AB 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. 
PY 2022
PD MAY
SO Marine Environmental Research
SN 0141-1136
PU Elsevier BV
VL 177
UT 000800111000007
DI 10.1016/j.marenvres.2022.105639
ID 88094
ER

EF