The jack mackerel, Trachurus japonicus, has a prolonged spawning season and widely spread spawning grounds. The population in the coastal waters of Japan seems to be composed of several cohorts spawned seasonally from different waters. To understand its population structure along the Tsushima Warm Current, we analysed hatchdates and growth histories of fish from Kunda Bay, the southern, central and northern East China Sea (ECS), the southern Sea of Japan, and Maizuru Bay. Seven cohorts were detected from fish collected between June 2005 and June 2006 in Kunda Bay. Comparing hatchdate distributions and growth trajectories of the seven cohorts with those of the other five regional samples, we did not find that cohorts collected in Kunda Bay originated in the southern ECS. Therefore, these coastal waters of Japan appear to be significant spawning grounds for juvenile jack mackerel. (C) 2008 Elsevier B.V. All rights reserved.
英文摘要:
The jack mackerel, Trachurus japonicus, has a prolonged spawning season and widely spread spawning grounds. The population in the coastal waters of Japan seems to be composed of several cohorts spawned seasonally from different waters. To understand its population structure along the Tsushima Warm Current, we analysed hatchdates and growth histories of fish from Kunda Bay, the southern, central and northern East China Sea (ECS), the southern Sea of Japan, and Maizuru Bay. Seven cohorts were detected from fish collected between June 2005 and June 2006 in Kunda Bay. Comparing hatchdate distributions and growth trajectories of the seven cohorts with those of the other five regional samples, we did not find that cohorts collected in Kunda Bay originated in the southern ECS. Therefore, these coastal waters of Japan appear to be significant spawning grounds for juvenile jack mackerel. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]:
EAST CHINA SEA
; ANCHOVY ENGRAULIS-JAPONICUS
; JAPANESE ANCHOVY
; EARLY GROWTH
; SAGAMI BAY
; LARVAL
; TRANSPORT
; OTOLITHS
; SURVIVAL
1.Fisheries Res Agcy, Natl Res Inst Far Seas Fisheries, Kanagawa 2368648, Japan 2.Univ Tokyo, Ocean Res Inst, Nakano Ku, Tokyo 1648639, Japan 3.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 4.Kyoto Univ, Maizuru Fisheries Res Stn, Kyoto 6250086, Japan 5.Fisheries Res Agcy, Seikai Natl Fisheries Res Inst, Nagasaki 8512213, Japan
Recommended Citation:
Kanaji, Yu; Watanabe, Yoshiro; Kawamura, Tomohiko; Xie, Songguang; Yamashita, Yoh; Sassa, Chiyuki; Tsukamoto, Youichi.Multiple cohorts of juvenile jack mackerel Trachurus japonicus in waters along the Tsushima Warm Current,FISHERIES RESEARCH,2009,95(2-3):139-145
