Free Content Paralarval distribution of the ommastrephid squid Todarodes pacificus during fall in the southern Sea of Japan, and its implication for locating spawning grounds

 Download
(PDF 806.8kb)
 
Download Article:

Abstract:

Annual fall surveys have been conducted since 1972 to determine the paralarval distribution of the ommastrephid squid Todarodes pacificus in the southern Sea of Japan. Small ring nets (45 cm diameter, 0.34 mm mesh) were towed vertically from a depth of ca 150 m to the surface to collect the paralarvae. Samples for a study covering the southern part of the Sea of Japan were collected once a month during September–November from 1974 to 1991. Samples for a separate study focusing on a smaller area near the Korea Strait were collected during October–November from 1973 to 1999. The results of both studies indicate that the paralarval distribution range expanded when stock levels were high during the early 1970s and after the late 1980s, and contracted when stock levels were low. After the stock increase that occurred in the mid-1980s, the paralarval distribution range expanded southward in October and November. We conclude that paralarval distribution patterns might be used to estimate the adult stock size.

Document Type: Research Article

Publication date: July 1, 2002

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more