A5080688582- Ichthyology and Marine Biology
- Marine and fisheries research
- Identification and Quantification in Food
- Fish Biology and Ecology Studies
- Marine Biology and Ecology Research
- Advanced biosensing and bioanalysis techniques
- Parasite Biology and Host Interactions
- Species Distribution and Climate Change
- Genomics and Phylogenetic Studies
- Ecology and Vegetation Dynamics Studies
- Fish Ecology and Management Studies
- Agriculture and Biological Studies
- Ocean Acidification Effects and Responses
- Marine animal studies overview
- Aquatic life and conservation
- Spider Taxonomy and Behavior Studies
- Plant and animal studies
- Marine Ecology and Invasive Species
- Genetic diversity and population structure
Japan Fisheries Research and Education Agency
2020-2024
Aomori University
2024
Fujikura (United States)
2024
ID-FISH Technology (United States)
2024
Hachinohe Gakuin University
2024
A new species of softnose skate (Arhynchobatidae), Bathyraja sexoculata Misawa, Orlov, Orlova, Gordeev and Ishihara is described on the basis five specimens collected from off east coast Simushir Island, Kuril Islands, located in western North Pacific. The conformed to genus by having anteriormost pectoral-fin skeleton almost reaching snout tip, a slender unsegmented rostral cartilage. Within Bathyraja, belongs subgenus Arctoraja (currently with four valid species) due relatively short tail...
<ns4:p>The taxon Elasmobranchii (sharks and rays) contains one of the long-established evolutionary lineages vertebrates with a tantalizing collection species occupying critical aquatic habitats. To overcome current limitation in molecular resources, we launched Squalomix Consortium 2020 to promote genome-wide array approaches, specifically targeting shark ray species. Among various bottlenecks working elasmobranchs are their elusiveness low fecundity as well large highly repetitive genomes....
The new snailfish Careproctus io is described on the basis of three specimens collected from western North Pacific, off northeastern Honshu Island, Japan. species can be distinguished congeners by following characters: vertebrae 40–42; dorsal-fin rays 36 or 37; anal-fin 30; pectoral fin deeply notched with 28 29 rays, lower lobe reaching to origin; large pelvic disk 34.2%–34.5% HL (10.3%–10.9% SL); teeth strongly trilobed both jaws, inner weakly shouldered; cephalic pore pattern 2-6-7-2,...
Abstract Distributional shifts under climate change are increasingly recognized as a biotic worldwide. However, the effects of distributional on ecosystem variability through changes in biodiversity remain to be clarified. In this study, elucidate impact population-level community structure and function ecological hierarchy, we investigated temporal alpha beta diversity, contribution individual species observed biodiversity, relationship between variability, using over 25 years data about 700...
A new snailfish, Paraliparis flammeus , is described on the basis of 18 specimens collected off Pacific coast Tohoku District, northern Japan at depths 422–890 m. The species distinguished from 28 North by following combination characters: mouth oblique; uppermost pectoral-fin base below horizontal through posterior margin maxillary; 60–63 vertebrae, 54–58 dorsal-fin rays, 50 or 51 anal-fin six principal caudal-fin and 17–20 rays. maximum likelihood tree based 106 COI gene sequences (492 bp)...
A taxonomic review of the snailfish genus Careproctus (Liparidae) with a reduced pelvic disk—the gilberti species group—from western North Pacific recognized three new from southern Sea Okhotsk, and confirmed validity gilberti, mederi, ostentum, parvidiscus. One newly described species, longibarbatus sp. nov., had been previously confused C. but was readily distinguishable on basis counts vertebrae (61–66 vs. 57–63), dorsal- (56–60 52–56) anal-fin rays (50–54 47–52), as well length pectoral...
Two genera of the poorly known family Cetomimidae (flabby whalefishes), Cetomimus Goode and Bean, 1895 Gyrinomimus Parr, 1934, are morphologically similar but differ in jaw tooth row (indistinct diagonal rows vs. distinct longitudinal Gyrinomimus) vomerine plate morphology (domed, round or rarely oval flat, rectangular oval). Three examples these genera, recently collected off Pacific coast Honshu Island, Japan, were respectively identified as hempeli Maul, 1969 (two specimens; characterized...
Collaboration), haplotype code, inclusion in morphological comparisons (Y=yes; N=no), total length (mm), and sex of specimens Okamejei kenojei examined this study.-=data unavailable; M=male; F=female.
ミトコンドリアDNAの調節領域480塩基対の配列差異と，背鰭・臀鰭・胸鰭軟条の3計数形質における形態的差異に基づき，ババガレイの集団構造を推定した。日本海と太平洋の個体間で遺伝的分化は確認されなかったが，背鰭・臀鰭条数は日本海と太平洋の個体間で有意に異なった。本種の浮遊仔魚期間は約85日と長く，生活史初期における分散によって海域間で遺伝子流動が起こっているものの，着底後の日本海と太平洋の間で移動が制限されているものと考えられたことから，管理単位としてはそれらの海域を区別する必要性が示唆された。
Two large specimens [310–476 mm standard length (SL)] of the genus Hoplostethus Cuvier in and Valenciennes, 1829, collected from Iwate Okinawa prefectures, Japan, were recently discovered identified as grandperrini Roberts Gomon, 2012 on basis following characteristics: body size, exceeding 300 SL; abdominal scutes strong; pectoral fins light red; caudal-fin tip without black pigmentation; upper margin eye almost horizontally level with lateral-line origin; predorsal scales not enlarged; fin...
Two specimens of a rare deep-sea anglerfish, Himantolophus azurlucens Beebe and Crane, 1947, were collected off the Pacific coast northern Japan, representing first records from western North Pacific. These represent second third species since original description, which was based on single specimen eastern Pacific; we determined that previous record Atlantic erroneous. We herein provide description comments intraspecific variation escal appendages. The new Japanese name...