Population Dynamics of Loligo sp in the Waters of the Island of Ternate
Umar Tangke1)

1)Universitas Muhammadiyah Maluku Utara, Jl. KH. A. Dahlan No. 100, Kel. Sasa, Kec. Ternate Selatan, Terntae-Maluku Utara, Indonesia, E-mail : umbakhaka[at]gmail.com

Abstract

Abstract
Loligo sp is a group of cephalopods or mollusks that live in the sea, with a horizontal distribution area from the coast to the open sea and a vertical spread from the surface to a depth of several thousand meters in the water column. Until now, the production of squid is still dependent on natural stocks because there has been no study on technology in cultivating it, so there is a concern that if the increased production continues to threaten the sustainability of these resources. Therefore, in the interest of sustainable management, it is necessary to assess the parameters of the population and biomass of the squid resource through analysis of population dynamics including age, growth and mortality and yield per recruit. This research was conducted for 3 months from June to August 2019 with the aim of analyzing the parameters of the population of squid resources and the level of exploitation in the waters of Ternate Island using survey methods and stock assessment and population analysis. The results showed that the squid resources landed in the Hygienic Market in Ternate City had stable growth parameters including the maximum length (L&#8734-) 97.13 mm, growth coefficient (K) 0.23 per month, t0 1.26. The total mortality, natural, and catch mortality values were 0.74, 0.50, 0.24 and the level of exploitation was 0.32, respectively, where this value indicates that the exploitation rate is smaller than the estimated utilization value of 46.0%.

Keywords: Keyword : Population Dynamics, Loligo sp, Mortality, cephalopods

Topic: Engineering