Skip to main content

Free Content Estimates of Spawning Stock Size of Blue Crab, Callinectes Sapidus, in Chesapeake Bay, 1986–1987

Download Article:
 Download
(PDF 637.3818359375 kb)
 

Abstract:

We present the first estimates of female spawning stock size for the blue crab, Callinectes sapidus Rathbun, in Chesapeake Bay. Using trawl surveys based upon simple and stratified random sampling, we made abundance and density estimates for 1986 and 1987. The 1986 spawning stock exhibited a single abundance peak, increasing from 1.0⋅105 individuals in early July to 9.3⋅106 in late July, maintaining high levels throughout the summer, and declining in the fall to 7.4⋅105 individuals. The 1987 spawning stock showed two peaks of abundance. The population reached the lesser peak, 1.0⋅106 individuals, in late July; the greater peak, 1.5⋅106, in late August. By late September, the population had declined to 6.5⋅105 individuals. The peak abundance of the 1987 female spawning stock was only 16% as great as the peak abundance in 1986; the 1987 spawning stock size (measured in crab-days spent on the spawning grounds) was only 29% of the stock size in 1986. Variability of this magnitude calls for continued monitoring and watchful management, to prevent fishing pressure from exceeding the reproductive capacity of the stock.

Document Type: Research Article

Publication date: 1990-01-01

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
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect 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