Spawning rhythm, egg number, and spawning time of wild caught three-lined tonguefish, <I>Cynoglossus abbreviatus</I>, reared in tanks
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- Kusaka Koji
- Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries Research Institute for Fisheries Science
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- Tada Koshiro
- Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries Research Institute for Fisheries Science
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- Yoshida Sohei
- Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries Research Institute for Fisheries Science
Bibliographic Information
- Other Title
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- 水槽で飼育したコウライアカシタビラメ天然魚の産卵間隔,産卵数,産卵時刻
- スイソウ デ シイク シタ コウライアカシタビラメ テンネンギョ ノ サンラン カンカク,サンランスウ,サンラン ジコク
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Abstract
Spawning rhythm, number of eggs spawned, and spawning time were examined in wild caught three-lined tonguefish, Cynoglossus abbreviatus. Four females (total length: 312-355 mm) were reared separately with three males in each tank under natural temperature. The start of spawning and the spawning period differed between individuals. One female spawned 14-22 times during a single spawning season. During the spawning period, which began in late April and ended in early June, all females continued to spawn with frequencies of 44-81% across all days. The total number of eggs spawned during the entire spawning season and the maximum number of eggs spawned in 1 day were 334,000-521,000 and 45,000-53,000, respectively. These results indicate that the three-lined tonguefish is a multiple spawner. Mean egg diameter was 0.96-1.10 mm, and egg diameter decreased as the spawning season progressed. A significant correlation was detected between mean egg diameter and water temperature on the day of spawning. Moreover, spawning time in three-lined tonguefish maintained in tanks was estimated to occur between 14:00 and 0:00.
Journal
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- Aquaculture Science
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Aquaculture Science 64 (1), 87-95, 2016
Japanese Society for Aquaculture Science
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Details 詳細情報について
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- CRID
- 1390282679697523840
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- NII Article ID
- 130005464563
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- NII Book ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- NDL BIB ID
- 027244890
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed