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Effect of Air Exposure on Acid-Base Balance of Hemolymph in Hard-shelled Mussel Mytilus coruscus

水産大学校研究報告 Volume 68 Issue 2 Page 65-70
published_at 2020-01
68-2-65-70.pdf
[fulltext] 761 KB
Title
イガイ血リンパの酸塩基平衡に及ぼす大気曝露の影響
Effect of Air Exposure on Acid-Base Balance of Hemolymph in Hard-shelled Mussel Mytilus coruscus
Creators Handa Takeshi
Creators Araki Akira
Creators Yamamoto Ken-ichi
Source Identifiers
Creator Keywords
Mytilus coruscus hemolymph acid-base balance air exposure normoxia respiratory physiology
We investigated the hemolymph acid–base status of the hard-shelled mussel Mytilus coruscus exposed to air for 24–48 h at 24℃. M. coruscus exposed to air showed a decrease in hemolymph pH from 7.625 to 7.118 after 24 h and to 6.702 after 48 h. The hemolymph total CO_2 concentration increased from 1.43 mM/L to 3.12 mM/L during the first 24 h of air exposure, and increased to 6.32 mM/L after 48 h. The hemolymph CO_2 partial pressure increased from 1.50 torr to 9.48 torr during the first 24 h of air exposure, and increased to 41.8 torr for 48 h. The hemolymph [HCO_3^–] increased to 2.74 mM/L at 24 h and to 4.62 mM/L at 48 h. These results indicated that during prolonged air exposure M. coruscus showed hemolymph acidosis with partial compensation. M. coruscus were immersed in seawater after air exposure for 24 h, and the acid–base status recovered to initial levels within 3–24 h.
Languages eng
Resource Type departmental bulletin paper
Publishers 水産大学校
Date Issued 2020-01
File Version Version of Record
Access Rights open access
Relations
[ISSN]0370-9361