Effects of ocean acidification driven by elevated CO2 on larval shell growth and abnormal rates of the venerid clam, Mactra veneriformis SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Effects of ocean acidification driven by elevated CO2 on larval shell growth and abnormal rates of the venerid clam, Mactra veneriformis
Author(s)
Kim, Jee-Hoon; Yu, Ok Hwan; Yang, Eun Jin; Kang, Sung-Ho; Kim, Won; Choy, Eun Jung
KIOST Author(s)
Yu, Ok Hwan(유옥환)
Alternative Author(s)
유옥환
Publication Year
2016-11
Abstract
The venerid clam (Mactra veneriformis Reeve 1854) is one of the main cultured bivalve species in intertidal and shallow subtidal ecosystems along the west coast of Korea. To understand the effects of ocean acidification on the early life stages of Korean clams, we investigated shell growth and abnormality rates and types in the D-shaped, umbonate veliger, and pediveliger stages of the venerid clam M. veneriformis during exposure to elevated seawater pCO(2). In particular, we examined abnormal types of larval shell morphology categorized as shell deformations, shell distortions, and shell fissures. Specimens were incubated in seawater equilibrated with bubbled CO2-enriched air at (400 +/- 25)x10(-6) (ambient control), (800 +/- 25)x10(-6) (high pCO(2)), or (1 200 +/- 28)x10(-6) (extremely high pCO(2)), the atmospheric CO2 concentrations predicted for the years 2014, 2084, and 2154 (70-year intervals; two human generations), respectively, in the Representative Concentration Pathway (RCP) 8.5 scenario. The mean shell lengths of larvae were significantly decreased in the high and extremely high pCO(2) groups compared with the ambient control groups. Furthermore, under high and extremely high pCO(2) conditions, the cultures exhibited significantly increased abundances of abnormal larvae and increased severity of abnormalities compared with the ambient control. In the umbonate veliger stage of the experimental larvae, the most common abnormalities were shell deformations, distortions, and fissures; on the other hand, convex hinges and mantle protuberances were absent. These results suggest that elevated CO2 exerts an additional burden on the health of M. veneriformis larvae by impairing early development.
ISSN
0254-4059
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40374
DOI
10.1007/s00343-016-5159-1
Bibliographic Citation
CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY, v.34, no.6, pp.1191 - 1198, 2016
Publisher
SCIENCE PRESS
Subject
OYSTER SACCOSTREA-GLOMERATA; EMBRYONIC-DEVELOPMENT; CARBON-DIOXIDE; CORAL-REEFS; SURVIVAL; FERTILIZATION; PCO(2); TEMPERATURE; MUSSELS
Keywords
abnormality; larval shell growth; Mactra veneriformis; ocean acidification; pCO(2)
Type
Article
Language
English
Document Type
Article
Publisher
SCIENCE PRESS
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