Japanese sand lance , sand eel [1][2][3][4]

The Soya Straight Subpopulation
Scientific name: Ammodytes personayus Girard, Ammodytes hexapterus


Photo by [1]


1: Distribution
Japanese sand lance is widely found around Japanese coastal waters excluding Okinawa area, the Korean peninsula and Shandong peninsula. They live in sandy bottom areas of 40-80 m deep and often under the sand below the sea bottom at night in habit. In the Soya Straight area, they migrate to the north in summer according to the rise of water temperature, and then back to the south for spawning. They are a very important food for ichthyophagous fishes and sea birds.


2:Fishing ground
The catch of Japanese sand lance is abundant in the Soya Straight area. In Hokkaido, the primary fishing season is from April to June for coastal fishery and from June to October for trawl fishery. Japanese sand lance is regarded as an important fishing resource in summer season.

GIS MAP: Fishing Ground of Japanese sand lance the Soya Straight Subpopulation[1]


3:Annual catch
Since 1988, the annual catch by trawl fishery has increased and reached to 52,000 tons in 1995, and then it began to fall. In 2000's, it fluctuates between 11,000 tons and 15,000 tons. The annual catch by coastal fishery is fluctuates from hundreds to thousands tons, and it was 1,181 tons in 2003.


Fig. Annual Catch of Japanese sand lance the Soya Straight Subpopulation[2]


4:Stock condition
It is estimated that the resource level of Japanese sand lance is low and the amount of resource trend is decreasing according to the CPUE in recent years. It is necessary to take account of the stock condition in Russian waters in order to clarify the precise resource condition.


5:Reference
[1] Fisheries Agency and Fisheries Research Agency of Japan, "Marine fisheries stock assessment and evaluation for Japanese waters (Digest for fiscal year 2004)", 2004, (In Japanese, also available from http://abchan.job.affrc.go.jp/digests16/html/1654.html)
[2] Fisheries Agency and Fisheries Research Agency of Japan, "Marine fisheries stock assessment and evaluation for Japanese waters (Details for fiscal year 2004)", 2004, (In Japanese, also available from http://abchan.job.affrc.go.jp/digests16/details/1654.pdf)
[3]"Fisheries and Aquatic Life in Hokkaido,New Edition(Edited by Mizushima,T.,Torisawa,M.)"(in Japanese),The Hokkaido Shimbun Press,2003
[4] The Japan Fisheries Resource Conservation Association, "The Data Book on Ecology of Aquatic Life"(in Japanese), 1981