A5017833910- Cephalopods and Marine Biology
- Marine and fisheries research
- Marine animal studies overview
- Isotope Analysis in Ecology
- Ichthyology and Marine Biology
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Arctic and Antarctic ice dynamics
- Marine Biology and Environmental Chemistry
- Environmental Toxicology and Ecotoxicology
- Neuroendocrine regulation and behavior
- Coral and Marine Ecosystems Studies
- Underwater Acoustics Research
- Chemical synthesis and alkaloids
- Primate Behavior and Ecology
- Human-Animal Interaction Studies
- Toxic Organic Pollutants Impact
- Microplastics and Plastic Pollution
- Species Distribution and Climate Change
- Environmental DNA in Biodiversity Studies
- Mercury impact and mitigation studies
- Parasite Biology and Host Interactions
- Fish Ecology and Management Studies
- Marine Ecology and Invasive Species
- Food Industry and Aquatic Biology
National Museum of Nature and Science
2013-2024
Tokyo National Museum
1991-2012
Science Museum
1998-2006
Ehime University
1997
Hokkaido University
1980
Despite its charismatic appeal to both scientists and the general public, remarkably little is known about giant squid Architeuthis, one of largest invertebrates. Although specimens Architeuthis are becoming more readily available owing advancement deep-sea fishing techniques, considerable controversy exists with regard topics as varied their taxonomy, biology even behaviour. In this study, we have characterized mitochondrial genome (mitogenome) diversity 43 samples collected from across...
A recent study revised the generic level taxonomy of family Octopodidae, and several species groups that were previously included in Octopus are now recognized as independent genera. However, knowledge regarding phylogenetic relationships among taxa Octopodidae is still poor. The shallow-water benthic octopus Japan adjacent waters examined present using mitochondrial DNA cytochrome c oxidase subunits I III (COI COIII, respectively) sequence data, taxonomic statuses compared to those derived...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 444:289-301 (2012) - DOI: https://doi.org/10.3354/meps09371 Active hunting by deep-diving sperm whales: 3D dive profiles and maneuvers during bursts of speed Kagari Aoki1,*, Masao Amano2, Kyoichi Mori3,6, Aya Kourogi2, Tsunemi Kubodera4, Nobuyuki Miyazaki5 1International Coastal Research Centre, Atmosphere...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 266:173-184 (2004) - doi:10.3354/meps266173 Feeding habits of neon flying squid Ommastrephes bartramii in transitional region central North Pacific Hikaru Watanabe1,*, Tsunemi Kubodera2, Taro Ichii1, Shigeyuki Kawahara1 1National Research Institute Far Seas Fisheries, 5-7-1 Orido Shimizu, Shizuoka 424-8633,...
Stomach contents from a total of 439 Short-tailed Shearwaters taken at 94 stations in the Okhotsk Sea, North Pacific Ocean and Bering Sea during summer, 1970-1978, were examined order to determine food feeding habits this seabird.The diet for varied according sea area. Overall it consisted mainly small-sized organisms such as larval juvenile fish squid, euphausiids, amphipods, copepods, shrimp, Thecosomata, all which are usually abundant surface layer pelagic environment. The occurrence...
Aquatic pollution resulting from extensive usage of organotin compounds has been great concern due to their deleterious effects in organisms. However, contamination deep-sea ecosystems not yet studied. The present study was attempted determine butyltin (BTs), including mono- (MBT), di- (DBT), and tributyltin (TBT) organisms collected Suruga Bay, Japan, order elucidate the status accumulation characteristics. were between 135 980 m aphotic bathyal zone compared with those shallow waters....
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 315:187-197 (2006) - doi:10.3354/meps315187 Diel vertical migration of squid in warm core ring and cold water masses transition region western North Pacific Hikaru Watanabe1,5,*, Tsunemi Kubodera2, Masatoshi Moku3, Kouichi Kawaguchi4 1National Research Institute Far Seas Fisheries, 5-7-1 Orido Shimizu,...
The giant squid, Architeuthis , is renowned as the largest invertebrate in world and has featured an ominous sea monster novels movies. Considerable efforts to view this elusive creature its deep-sea habitat have been singularly unsuccessful. Our digital camera depth recorder system recently photographed attacking bait at 900 m off Ogasawara Islands North Pacific. Here, we show first wild images of a squid natural environment. Recovery severed tentacle confirmed both identification scale...
Our newly developed underwater high definition video camera system took the first live images of adults mesopelagic large squid, Taningia danae , between 240 and 940 m deep off Ogasawara Islands, western North Pacific. The resulting footage includes attacking bioluminescence behaviours, reveals that T. is far from sluggish neutrally buoyant deep-sea squid previously suspected. It can actively swim both forward backward freely by flapping its muscular triangular fins changes direction quickly...
Abstract Based on a comprehensive analysis of molecular sequence data, the Sepiidae genera Acanthosepion Rochebrune, 1884; Ascarosepion Aurosepina Jothinayagam, 1987; Decorisepia Iredale, 1926; Doratosepion Rhombosepion 1884 and Spathidosepion are here re-instated formally recognised as valid. Sepia Linnaeus, 1758 Sepiella Gray, 1849 retained, but Metasepia Hoyle, 1885 is placed in alternative combination with . The subgenus Digitosepia Lipiński, 2020 well supported herein elevated to...
Stomach contents of 437 age-0 year Pacific bluefin tuna Thunnus orientalis (20·3-59·4 cm fork length, L(F)) caught in the Tsushima Current and Kuroshio regions around Japan were examined to investigate their ontogenetic diet shift. Prey compositions diverse different between regions. Although seasonal growth patterns regions, shifts shared a common pattern. In region (Sea Japan), small T. (20-25 preyed upon squid (juvenile Enoploteuthis chunii), larger ones (25-35 gradually shifted...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 396:111-122 (2009) - DOI: https://doi.org/10.3354/meps08330 Feeding ecology of swordfish Xiphias gladius in subtropical region and transition zone western North Pacific Hikaru Watanabe1,*, Tsunemi Kubodera2, Kotaro Yokawa3 1National Research Institute Far Seas Fisheries (Yokohama), 2-12-4 Fukuura Kanazawa...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 523:233-241 (2015) - DOI: https://doi.org/10.3354/meps11141 Visual and behavioral evidence indicates active hunting by sperm whales Kagari Aoki1,6,*, Masao Amano2, Tsunemi Kubodera3, Kyoichi Mori4, Ryosuke Okamoto5, Katsufumi Sato1 1Atmosphere Ocean Research Institute, The University of Tokyo, 5-1-5...
Diet and sexual maturation were examined in the winter–spring cohort of neon flying squid, Ommastrephes bartramii , during its southward migration through Kuroshio–Oyashio transition region western North Pacific. The main prey items are micronektonic animals small pelagic fish, which abundantly distributed throughout study area. Among species, O. was dependent on Japanese anchovy Engraulis japonicus also migrate from northern to southern winter, squid Watasenia scintillans period. Other...