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The Indonesian blue swimming crab fishery developed rapidly during the 1990s to become an important source of income for coastal communities. The blue swimming crab (BSC) in 2015 is the third highest export commodity in Indonesia, primarily to USA markets. Southeast (SE) Sulawesi is a relatively minor area for blue swimming crab production (approximately 1200-2000 mt per annum), in which only a subset of Asosiasi Pengelolaan Rajungan Indonesia (APRI) members are active, and it may be a conducive region in which to conduct a pilot activity to form a fisheries management structure that demonstrates the benefits that can be achieved via collaboration. The control document (CD) is a traceability and documentation process to be implemented by all of the segments of the supply chain (collectors/cooking stations, miniplants, and processors) in order to promote compliance to new Ministry and Marine Affair (MMAF) regulations and generate the records and documents of the supply chain application and verification of the new regulations. The self-recorded logbook by the fishermen and miniplant, as the point in the supply chain, could help with a meaningful and long-term solution to the fishery management in Southeast Sulawesi. This is the first trial of CD in Indonesia and could be a good model for BSC fishery in other region in Indonesia.

The blue swimming crab (Portunus pelagicus Linnaeus, 1758) inhabits coastal waters with sandy or muddy substrates of Southeast Asia. Aquatic environment and fishing intensity might influence the variation in morphometric characters of species as a form of adaptation and might characterize the stock unit as well. This study was aimed to analyze the morphometric variation of the blue swimming crab (BSC) population in western and eastern parts of Java Sea as part of Fisheries Management Area (FMA 712) of Indonesia. The representative crab sample for both males and females were taken randomly from three different locations, i.e. East Lampung, Rembang, and Southern Madura Island. Those samples were analyzed with a method called “conventional morphometric method”. Result of the Kruskal-Wallis test showed that 10 characters were significantly different between male and female crabs. The cluster analysis also showed that the crabs in East Lampung and Rembang had high similarities which tended to be close population, while Southern Madura’s crabs were seemed to be dissimilar. In addition, discriminant analyses also showed that the BSC population in Southern Madura was different from the other two populations, indicating that the BSC population of Southern Madura is a different stock unit.

Mantis shrimp is one of the fishery resources with a high species variation and wide distribution area that cause differences in morphometric characteristics and population mixing. This study purposed to identify and compare the morphometric characters of mantis shrimp (Stomatopods) as well species kindship in South Madura waters, Indonesia. The study was conducted from October 2019 until January 2020 with specimen collecting from three locations south of Madura. Three types of dominant mantis shrimps caught were chosen for the investigation of morphometric differentiation. Morphometric characters were observed with the standard method and truss network analysis (TNA). Based on certain morphological characters, those mantis shrimp species were Harpiosquilla harpax, Miyakella sp., and Oratosquillina sp. Kruskal Wallis analysis resulted in a difference of 14 from 15 characters with the standard method, and 47 from 56 characters with truss network analysis. Cluster analysis showed that Miyakella sp. and Oratosquillina sp. have a close relationship compared to Harpiosquilla harpax. Moreover, the dominant mantis shrimp populations in the south of Madura formed two species of kindship groups.

Spiny lobsters (Panulirus spp.) are an economically important species in the fishery industry and continuously being exploited, particularly in the South of Java. Lobsters in Wonogiri Regency waters have decreased in number, and the average size lobsters caught is also getting smaller. Double-spined rock lobster (Panulirus penicillatus) is the dominant species caught by the fishermen but has limited biological information. The objective of this study is to identify several factors affecting double-spined rock lobster (P. penicillatus) population in terms of growth parameters, mortality rates, and exploitation rates. This study was conducted in August 2018-January 2019. The analysis uses the FAO-ICLARM Stock Assessment Tool (FISAT II) program. The growth rates (K) of P. penicillatus male and female lobsters are 0.32 year-1 and 0.37 year-1. The mortality rates (Z) 2.35 year-1 for males and 2.84 year-1 for females. The exploitation rate of males 0.77 and females 0.77 and 0.78, respectively. It has exceeded the optimal level (0.5) and reached overfishing value. The management of lobster fisheries needs to be done by several approaches, including a reduction of fishing efforts and prohibited from catching lobster in berry (with eggs) conditions to sustain their population naturally.

Flying fish (Exocoetidae) is one important small pelagic fisheries commodity in border areas of Indonesia and Timor Leste. However, the data of population parameters in Ombai Strait are not yet known, which is important to inform unit stock management and sustainable fisheries. This study aimed to provide information about growth and mortality parameters, recruitment pattern, and exploitation rate of flying fish. Data collection was carried out during May 2018-June 2019 by measuring and observing the flying fish landed at the fish landing sites in Belu Indonesia and Bobonaro Timor Leste. Data analysis used the FAO-ICLARM Stock Assessment Tools (FiSAT) program. The results showed that the asymptotic length (L∞) was 330.5 mm, growth constant (K) was 0.99 per year, and growth performance indices (Φ) was 0.50. The natural mortality (M) was 0.92 per year, fishing mortality (F) was 0.12 per year, and total mortality (Z) was 1.04 per year. The highest recruitment occurs in May to September with peak season in June (14.82%) and September (15.16%). Exploitation rate (E) flying fish in the border area of Indonesia and Timor Leste in Ombai Strait is relatively low about 0.11 and still at a rational and sustainable utilization range (E < 0.5).

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