<論文>佐渡島真野湾の藻場に出現した魚類と十脚甲殻類 (1992年7月〜10月)

概要

論文の詳細を見る
Fish and Decapod crustacean in Sargassum Zone and Zostera Zone were collected and identified in Mano Bay, in July-October 1992. Mano Bay is located in Sado Island (38°33'N : 138°20' E), in the central part of the Japan Sea. The bay is shallow and faces directly the open ocean. The water temperature and salinity record highest in August (26-29℃, 35‰), and minimum in February (6-8℃) and December (33.7‰). Samples were obtained using a shrimp tow net (1.0x0.4m rectangular net with a 2.5mm mesh size). A total of 29 fish species and 18 decapod crustacean were identified. Among fish species obtained, Rudarius ercodes, Vellitor centropomus, and Pseudoblennius cottoides occurred at all samplings. The abundance of Hypodytes rubripinnis and R. ercodes was large, occupying 64.3% and 21.6% of total number of individuals, respectively. Among 18 decapod crustacean, Metacrangon angusticauda, Galathea orientalis and Metapenaeopsis lamellata were the first record from this bay. Three species such as Heptacarpus geniculatus, Eualus leptognathus, and Hippolyte ventricosa were found throughout the four months. H. geniculatus and E. leptognathus occupied the largest part of total number of the crustacean. Seasonal change in species composition was remarkable in fish species, but not in decapoda crustacean. The abundance was 1.5-7.5 times greater in night time samples than in the day time samples in the crustacean.
北海道東海大学の論文
1994-03-25