Abstract
To stimulate catch production and wise management patterns, research is carried out on the study of ecological aspects, estimates of population dynamics and exploitation rates of crayfish (Panulirus Spp) in the Spermonde waters of the Makassar Strait. Based on the COA (Correspondence Analysis) (Ludwig and Reynold, 1988), as well as the analysis of Von Bertalanffy (1938, in Sparre et al., 1989), it was found that the micro-habitat of Panulirus spp., Generally co-exist with massive coral species Alcyonaria (Sarcophyton, Heliophora , and Tubipora), and branching reefs of the Acropora species (Goniopora and Pavona), as well as living with algal grass species of Caulerpa and Halimeda. The growth pattern of Panulirus lobster follows the equation Lt = 46.3561 (1- e -0.1738 (t + 1.7827)), which means that the length decreases at relatively old age. The total mortality coefficient (Z) of population is 0.5066/year, this is relatively the same as the ideal mortality (M) which means optimal utilization, but it is necessary to select catch sizes that are larger than 24 - 27cm (in the range of 34 - 46cm).
Highlights
Until now, the utilization of crayfish as a high economic resource has not been optimal, especially since the issuance of Presidential Decree No.39 / 80 concerning the prohibition of trawling, despite the increasing demands of domestic and foreign food needs
As the research target animal is crayfish (Panulirus spp) obtained from the catch of fishermen operating around Spermonde waters using bottom nets, bottom traps, and by diving
The ecological data for 3 lobster species are based on sample units with ecological factors around the Makassar Strait Spermonde waters (Table 1)
Summary
The utilization of crayfish as a high economic resource has not been optimal, especially since the issuance of Presidential Decree No.39 / 80 concerning the prohibition of trawling, despite the increasing demands of domestic and foreign food needs. The need for lobster exports to importing countries such as China, Hong Kong, Taiwan, Japan, Malaysia, Singapore, Australia and the United States is increasing. The decrease in catch production is indicated by 2 assumptions; first, because fishing technology that is capable of producing high production has not been attempted, secondly, the potential for resources has decreased due to unwise management so far. Budiman Yunus, and Basse Siang Parawansa fishing) and / or over-investment in lobster biota, it is necessary to study the ecological aspects, population dynamics and exploitation level of these crayfish in formulating management policies
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