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Interannual growth differences and growth-selective survival in larvae and juveniles of marbled sole Pseudopleuronectes yokohamae

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Title: Interannual growth differences and growth-selective survival in larvae and juveniles of marbled sole Pseudopleuronectes yokohamae
Authors: Joh, Mikimasa Browse this author
Nakaya, Mitsuhiro Browse this author
Yoshida, Naoto Browse this author
Takatsu, Tetsuya Browse this author →KAKEN DB
Keywords: Flatfish
Growth-selective survival
Juveniles
Larvae
Prey density
Pseudopleuronectes yokohamae
Temperature
Issue Date: 4-Dec-2013
Publisher: Inter-Research
Journal Title: Marine Ecology Progress Series
Volume: 494
Start Page: 267
End Page: 279
Publisher DOI: 10.3354/meps10509
Abstract: Flatfishes drastically change their habitat, body form, and feeding during metamorphosis; thus, the early juvenile and larval stages are viewed as being critical for early survival. However, to the best of our knowledge, no studies have tested the growth-mortality hypothesis for both larval and juvenile stages of flatfishes. Therefore, we investigated the relationship between growth rate and environmental factors and tested the hypothesis for both larval and juvenile stages of marbled sole Pseudopleuronectes yokohamae in Hakodate Bay, Japan from 2001 to 2003. For both larval and juvenile stages, otolith growth correlated with water temperature. Eye-migrating larvae were defined as survivors of planktonic life (SV pelagic). Large juveniles captured in late June and July were defined as survivors of shrimp predation (SVjuvenile). To test the growth-mortality hypothesis, otolith growth was compared between the SV and the original population. During the pelagic larval stage, growth-selective survival was not detected in any of the 3 yr. During the early juvenile stage, fast-growing individuals survived selectively in 2002 but not in 2003. In 2002, population growth of juveniles was slow because water temperatures were low. Thus, juveniles in 2002 required time to exceed the size spectrum that is vulnerable to shrimp predation; consequently, the individuals that grew more rapidly were able to survive selectively. Our results show the importance of the early juvenile stage for the survival of flatfishes.
Rights: © 2013 Inter-Research
Type: article (author version)
URI: http://hdl.handle.net/2115/55151
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高津 哲也

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