INVESTIGATIONS OF ICHTHYOPLANKTON CARRIED OUT BY THE KURILE-SAKHALIN EXPEDITION,
Abstract
The areas investigated by the Kurile-Sakhalin expedition are used as spawning grounds by commercial fishes, such as cryophilic navaga, cod, walleye pollock and herring in winter and spring and yellowfin sole, long-snouted flounder and partly by Glyptocephalus sp., mackerel, redfish and ling cod in summer and autumn. In summer and autumn, the spawning grounds off the west and south coasts of Sakhalin are used by the schools coming from the west and southwest; the east coast of Sakhalin is visited by schools coming from the east. The spawning grounds off the Kurile Islands are occupied by local schools and by fishes migrating from the coast of Hokkaido. Thus, the spawning grounds off the west and south coast of Sakhalin are occupied mainly by the species of the Sea of Japan and partly by the species migrating from the west coast of Hokkaido. The spawning grounds off the east coast of Sakhalin are utilized by the Okhotsk ichthyofauna; the spawning grounds off the Kurile Islands are utilized by the local species as well as by the thermophilic species migrating from the east coast of Hokkaido. The travel routes of spawning schools of some of the species are presented by charts. Data on some of the samples obtained by the expedition are presented in special tables, pointing out the time, area, species and their quantity. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0657293
Entities
People
- T. S. Rass
Organizations
- Naval Oceanographic Office