• shareshare
  • link
  • cite
  • add
Publication . Article . 1989

A modification of DeLury method to abalone fishery.

Nobuo Hirayama; Sakutaro Yamada; Hiromu Kikuchi; Jun-ichi Yamada;
Open Access
Published: 01 Jan 1989 Journal: NIPPON SUISAN GAKKAISHI, volume 55, pages 409-416 (issn: 0021-5392, eissn: 1349-998X, Copyright policy )
Publisher: Japanese Society of Fisheries Science

Analysis using a modified DeLury model to represent daily variation of the catchability coefficient was undertaken. The data utilized were from abalone Haliotis discus hannai fisheryof Kisakata, Akita prefecture in July 1985 and 1986.A multiplier for the catchability coefficient was expressed in a nonlinear term based on the ratio of operating hours spent for catching abalone to the total fishing hours. The exponent of the nonlinear term, additional parameter to DeLury model, was evaluated by mutliple regression coefficient. Results of the estimates were as follows; abundance is about 3-4t, the catchability coefficient is about 3×10-4h-1, and the daily fishing rate is 3-4%.

Subjects by Vocabulary

Microsoft Academic Graph classification: Abalone Fishery Fishing Haliotis discus biology.organism_classification biology Linear regression


Aquatic Science

Download fromView all 2 sources