Sublittoral and upper bathyal vetigastropods (Mollusca: Gastropoda) dredged from the Ogasawara Islands
Hasegawa, K. (2018). Sublittoral and upper bathyal vetigastropods (Mollusca: Gastropoda) dredged from the Ogasawara Islands. Mem. Natl. Mus. Nat. Sci., Tokyo 52: 105-152
In: Memoirs of the National Museum of Nature and Science, Tokyo. National Museum of Nature and Science: Tokyo, more
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| Keywords |
New records
Gastropoda [WoRMS]
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| Author keywords |
Ogasawara Islands; vetigastropods; sublittoral; bathyal |
| Abstract |
The sublittoral and upper bathyal vetigastropod fauna around the Ogasawara Islands is surveyed based on material collected via several dredging programs, mainly by the R/V Koyo of the Tokyo Metropolitan Fisheries Experiment Station, during the years 1976–2017 discontinuously. Ninety-three morphospecies are recognized among the material, including juvenile and incomplete specimens, and identified to at least generic level. Seventy are identified as previously named species, and 23 are considered to be probably undescribed. Fifty-one species (55%) are recorded for the first time in the Ogasawara Islands, including 22 (24%) new to Japanese waters. Twelve species (13%) are considered to be endemic to this area, and four are considered possibly endemic. Species that are new to the Ogasawara Islands as well as those with taxonomic discussion are illustrated in color, together with comparative specimens from other areas, mainly the Nansei Islands. |
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