Saga Prefectural Genkai Fisheries Research and Development Center

Karatsu, Japan

Saga Prefectural Genkai Fisheries Research and Development Center

Karatsu, Japan
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Aoki K.,Japan National Research Institute of Fisheries Science | Kameda T.,Japan National Research Institute of Fisheries Science | Yamatogi T.,Nagasaki Prefectural Institute of Fisheries | Ishida N.,Nagasaki Prefectural Tsushima District Fisheries Extension Advisory Center | And 3 more authors.
Marine Pollution Bulletin | Year: 2017

A massive bloom of the dinoflagellate Karenia mikimotoi appeared in 2014 in Imari Bay, Japan. Bloom dynamics and hydrographical conditions were examined by field survey. The bloom initially developed in the eastern area of Imari Bay, subsequently after rainfall during the neap tides, cell density exceeded over 10,000cellsml. Vertical distribution of K. mikimotoi was primarily controlled by the light intensity and secondarily by the water quality during the daytime. Almost all cell-density maxima occurred in depths with weak daytime light intensities of <300μmolm-2 s-1. In some cases of weak light intensity, cell-density maxima occurred in depths with favorable hydrodynamic conditions for the growth. Spatially classified areas were identified by cluster analysis using the growth rate calculated from seawater temperature and salinity. This study quantitatively evaluated the environmental factors of the eastern area, where the bloom initially occurred, during the development of the bloom. © 2017 Elsevier Ltd.


Rodhouse P.G.K.,British Antarctic Survey | Pierce G.J.,University of Aberdeen | Pierce G.J.,University of Aveiro | Sauer W.,Rhodes University | And 49 more authors.
Reviews in Fisheries Science and Aquaculture | Year: 2015

Some 290 species of squids comprise the order Teuthida that belongs to the molluscan Class Cephalopoda. Of these, about 30-40 squid species have substantial commercial importance around the world. Squid fisheries make a rather small contribution to world landings from capture fisheries relative to that of fish, but the proportion has increased steadily over the last decade, with some signs of recent leveling off. The present overview describes all substantial squid fisheries around the globe. The main ecological and biological features of exploited stocks, and key aspects of fisheries management are presented for each commercial species of squid worldwide. The history and fishing methods used in squid fisheries are also described. Special attention has been paid to interactions between squid fisheries and marine ecosystems including the effects of fishing gear, the role of squid in ecosystem change induced by overfishing on groundfish, and ecosystem-based fishery management. Copyright © Taylor & Francis Group, LLC.


Noguchi K.,Saga Prefectural Genkai Fisheries Research and Development Center | Maeda M.,University of Miyazaki
Mer | Year: 2010

This research has aimed for establishing the stable production of flat fish larvae in aquaculture, adopting a marine bacterium, EKZ-2 strain, isolated from the macro algae Ecklonia kurome zoospore, that mainly has the pathogen-static activities. When EKZ-2 strain was fed to flat fish juvenile, the increased body weight was observed. And also in situ the sur vival rates of flat fish larvae was improved using EKZ-2 strain in the aquaculture facility of mass production, where the larval mortality had been high because of the pathogenic Vibrio in fection.

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