Ontogenetic changes in the optimal temperature for growth of juvenile marbled flounder Pseudopleuronectes yokohamae

Journal of Sea Research Volume 141 Page 14-20 published_at 2018-07-24
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Title ( eng )
Ontogenetic changes in the optimal temperature for growth of juvenile marbled flounder Pseudopleuronectes yokohamae
Creator
Kusakabe Kazushi
Otsuki Noriko
Yoshida Yusei
Takahashi Satoshi
Hata Masaki
Hori Masakazu
Source Title
Journal of Sea Research
Volume 141
Start Page 14
End Page 20
Abstract
We conducted a laboratory experiment and field collections of juvenile marbled flounder (Pseudopleuronectes yokohamae) to assess growth rates of juveniles. In the laboratory, cultured juveniles of approximately 31 and 46 mm standard length grew fastest at 20 °C, while juveniles of approximately 21 mm grew faster at 12–14 °C than at 20 °C. This result confirmed that optimal temperature for growth of juveniles changes ontogenetically. Juveniles were also collected from shallow estuaries during April to May, during which the water temperature increased from 13 to 22 °C. The increase in optimal temperature is advantageous for juveniles, because both juvenile size and ambient temperature increase as the season progresses. Growth rates of juveniles were nearly maximum under given temperatures in the field, although ambient temperatures are not necessarily optimal for growth.
Keywords
flatfish
nursery ground
thermal optima
specific growth rate
Descriptions
This study was partly supported by the Ministry of Agriculture, Forestry and Fisheries of Japan.
Language
eng
Resource Type journal article
Publisher
Elsevier
Date of Issued 2018-07-24
Rights
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
Publish Type Accepted Manuscript
Access Rights open access
Source Identifier
[DOI] https://doi.org/10.1016/j.seares.2018.07.010 isVersionOf