Growth and longevity of jack-knife shrimp, Haliporoides sibogae, off Nagasaki, Japan

Abstract

The jack-knife shrimp, Haliporoides sibogae, is an unutilized fisheries resources with a population widely distributed on the continental slope in the East China Sea, southwest of Nagasaki. The growth and longevity of this shrimp were investigated based on 3,733 specimens collected by monthly beam-trawl sampling between May 2006 and March 2009. The spawning season of the H. sibogae population southwest of Nagasaki was from November to March, and the main spawning season was in January and February. The longevity of H. sibogae was estimated to be about 38 months and the growth coefficient of this shrimp population was found to be less than half that of another two populations in Japanese waters. The secondary sexual characters of H. sibogae females were also confirmed. © 2012, The Plankton Society of Japan, The Japanese Association of Benthology. All rights reserved.