アフリカ北西岸水域におけるヨーロッパコウイカ2亜種の地理的分布について
1979 年 45 巻 5 号 p. 557-560
詳細
1979 年 45 巻 5 号 p. 557-560
The geographical distribution of two subspecies belonging to Sepia officinalis LINNAEUS off the northwest coast of Africa was examined, using the materials collected by Japaese trawlers. Results obtained are as follows:
(1) The southern boundary of Sepia oficinalis oficinalis is in the vicinity of the Cap Vert.
(2) The northern boundary of S. o. hierredda is at the latitude of Cap Blanc.
(3) S. o. hierredda is found mainly in waters shallower than 50 meters and S. o. officinalis is found in every depth until at least 110 meters off the coast of Mauritania where both subspecies have been inhabiting commonly.
