Salinity tolerance of six adults (<i>Inversiunio jokohamensis</i>, <i>Hyriopsis schlegeli</i>, <i>Pronodularia japanensis</i>, <i>Cristaria plicata</i>, <i>Cristaria tenuis</i>, and <i>Sinanodonta</i> sp.) and two glochidia (<i>Cristaria plicata</i> and <i>Cristaria tenuis</i>) of unionid mussels
-
- ITOH Toshishige
- Enoshima Aquarium
-
- KAKINO Wataru
- Kitasato University School of Veterinary Medicine
-
- KITANO Tadashi
- Course of environment and resources department of human development, Tokai University
-
- KOHNO Hiroyoshi
- Okinawa regional research center, Tokai University
Bibliographic Information
- Other Title
-
- イシガイ科淡水二枚貝の成貝6種と幼生2種の塩分耐性
Abstract
<p> The salinity tolerance of freshwater unionid mussels species Inversiunio jokohamensis, Hyriopsis schlegeli, Pronodularia japanensis, Cristaria plicata, C. tenuis, and Sinanodonta sp. reared in tanks was investigated. For adult mussels, the water in the tanks was adjusted to various brackish water salinity levels (3, 6, 10, and 12 psu). All adult individuals of I. jokohamensis died at salinities above 6 psu. When the salinity was gradually raised from 3-6 to 6-8 psu, almost all adult individuals of I. jokohamensis, H. schlegeli, C. tenuis, and Sinanodonta sp. died, but those of P. japanensis and C. plicata survived. When the salinity was raised from 8 to 10 psu, all adult individuals died.<br> On the other hand, when the salinity levels in tanks were raised from 0-3 to 11-33 psu and lowered from 11-33 to 0 psu until the juveniles fell off from the host (186-236 h), several glochidia of C. plicata and C. tenuis on the host fish survived and metamorphosed. Thus, the results of the present study show that adult mussels cannot survive in brackish water above salinity levels of 6-8 psu; however, glochidia on a host can survive at high salinities. We also considered the possibility of migration of mussels to other geographical areas via brackish water or the sea.</p>
Journal
-
- Japanese Journal of Limnology (Rikusuigaku Zasshi)
-
Japanese Journal of Limnology (Rikusuigaku Zasshi) 78 (1), 87-96, 2016
The Japanese Society of Limnology
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679039574912
-
- NII Article ID
- 130006405245
-
- ISSN
- 18824897
- 00215104
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed