NDLI: Three-dimensional mapping of red stingray (Dasyatis akajei) movement with reference to bottom topography

Content Provider	Springer Nature Link
Author	Otaki, Takayoshi Hamana, Masahiro Tanoe, Hideaki Miyazaki, Nobuyuki Shibuno, Takuro Komatsu, Teruhisa
Copyright Year	2015
Abstract	Most demersal fishes maintain strong relations with bottom substrates and bottom depths and/or topography during their lives. It is important to know these relations to for understand their lives. In Tokyo Bay, red stingray, Dasyatis akajei, classified as near-threatened species by IUCN, has increased since the 1980s. It is a top predator and engages in ecosystem engineer by mixing the sand bed surface through burring behavior, and greatly influences a coastal ecosystem. It is reported that this species invades in plage and tidal flats and has sometimes injured beachgoers and people gathering clams in Tokyo bay. Thus, it is necessary to know its behavior and habitat use to avoid accidents and to better conserve the biodiversity of ecosystems. However, previous studies have not examined its relationship with the bottom environment. This study aims to describe its behavior in relation to the bottom environment. We sounded three dimensional bottom topography of their habitat off Kaneda Cove in Tokyo Bay with interferometric sidescan sonar system and traced the movement of red stingrays by attaching a data logger system to survey their migration. The results revealed that red stingray repeated vertical movement between the surface and bottom, and used not only sand beds but also rocky beds.
Starting Page	327
Ending Page	334
Page Count	8
File Format	PDF
ISSN	17385261
Journal	Ocean Science Journal
Volume Number	50
Issue Number	2
e-ISSN	20057172
Language	English
Publisher	Korea Ocean Research and Development Institute and The Korean Society of Oceanography
Publisher Date	2015-07-09
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	red stingray movement three-dimensional bottom topography habitat use data logger interferometric sidescan sonar Oceanography Marine & Freshwater Sciences Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Oceanography

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