Diel feeding rhythms, daily ration, and seasonal changes thereof in marbled flounder Pseudopleuronectes yokohamae
| Autor: | Takeshi Tomiyama, Satoshi Takahashi, Yutaka Kurita, Hiroyuki Togashi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Stock assessment biology 010604 marine biology & hydrobiology 04 agricultural and veterinary sciences Aquatic Science biology.organism_classification 01 natural sciences Fishery Agency (sociology) 040102 fisheries Pseudopleuronectes 0401 agriculture forestry and fisheries Marbled flounder Fisheries Research Diel vertical migration |
| Zdroj: | Journal of Applied Ichthyology. 34(4):888-895 |
| Popis: | This paper aims to assess the diel feeding pattern and seasonal variation in the daily ration of immature and mature marbled flounder (Pseudopleuronectes yokohamae ). A day‐night collection by bottom trawls was conducted in Sendai Bay in July 2014. Marbled flounder (131–493 mm total length; Number of collected individuals = 1830, Number of analyzed individuals = 497) fed mainly on polychaetes during the day. At night, stomach content weight decreased with time, but the weight and proportion of bivalve siphons were consistently higher at night than during the day, suggesting nocturnal feeding by the flounder on bivalve siphons. Daily ration was greater in females ( This work was partly supported by the Stock Assessment Program of Fisheries Agency and Fisheries Research and Education Agency of Japan and the program “Project on Clarifying the Impact of Nuclear Substances” of the Fisheries Agency of Japan. |
| Databáze: | OpenAIRE |
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