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Effects of elevated p CO 2 on the early development of the commercially important gastropod, Ezo abalone Haliotis discus hannai
Author(s) -
KIMURA RYO,
TAKAMI HIDEKI,
ONO TSUNEO,
ONITSUKA TOSHIHIRO,
NOJIRI YUKIHIRO
Publication year - 2011
Publication title -
fisheries oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 80
eISSN - 1365-2419
pISSN - 1054-6006
DOI - 10.1111/j.1365-2419.2011.00589.x
Subject(s) - abalone , haliotis discus , hatching , human fertilization , biology , ocean acidification , fishery , seawater , larva , zoology , population , marine invertebrates , carbon dioxide , haliotis , botany , ecology , anatomy , demography , sociology
We used an up‐to‐date, a high accuracy CO 2 manipulation system to investigate the sensitivity of organisms to CO 2 acidification, rearing marine calcifiers under elevated CO 2 in running water. We evaluated the effects of elevated partial pressures of carbon dioxide ( p CO 2 ) in seawater on larvae of the commercially important marine gastropod Ezo abalone Haliotis discus hannai . In larval Ezo abalone, no effect of exposure to <1100 μatm p CO 2 seawater was observed in fertilization, malformation, or mortality rates until 15 h after fertilization. However, compared to control larvae in seawater (450 or 500 μatm p CO 2 ), the fertilization rate and the hatching rate (15 h after fertilization) decreased with increased p CO 2 exposure (1650 and 2150 μatm p CO 2 ) and the malformation rate increased significantly, with the larval shell length being smaller 75 h after hatching. These results suggest that ocean acidification will potentially impact the marine population of Ezo abalone as a human food source in the future.