Jurnal Sumberdaya Akuatik Indopasifik

Analysis of Soil Quality Parameters on the Production of Tiger Shrimp in Mangkudulis Island, Tana Tidung

Sun, 16 Feb 2025 00:00:00 +0000

Mangkudulis Island is one of the regions in the Tana Tidung Regency, North Kalimantan Province, which has significant potential in fisheries, particularly traditional shrimp pond aquaculture for tiger shrimp (Penaeus monodon). In general, environmental factors, such as soil quality, will affect the quality of pond water. The issue of water quality in shrimp ponds generally begins with soil quality, including pH, redox potential, organic carbon content, total nitrogen, C/N ratio, Fe, Mn, Al, and soil texture. This study aims to analyze soil quality parameters in relation to tiger shrimp pond production. The research was conducted over two months, from August to September 2022, in the tiger shrimp ponds on Mangkudulis Island. Soil samples were analyzed in a laboratory for parameters such as pH, redox potential, organic matter, texture, and heavy metals. The results of the soil quality measurements from Mangkudulis Island shrimp ponds indicate that the soil quality, based on parameters such as pH, redox potential, organic matter, and texture, does not meet the standard quality criteria. However, the levels of heavy metals (Al, Fe, and Mn) are within the acceptable standards. The average results for each parameter were: pH 5.5, redox potential -293 mV, organic carbon 2.26%, total nitrogen 0.18%, C/N ratio 13.15, sand 12.20%, silt 52.72%, clay 35.08%, Al 11.14 ppm, Fe 36.26 ppm, and Mn 17.42 ppm. These results were compared with shrimp production data obtained through interviews with pond owners. The average pond production is 300 kg/hectare, with 70,000 seed shrimp stocked at a density of 40 shrimp per kg. This result is not optimal due to the soil quality in the Mangkudulis ponds. Proper soil management needs to be implemented before the ponds are reused.

Biological Aspects of the Jerbung Shrimp (Penaeus merguiensis de Man 1888) in the Waters of Teluk Bintuni Regency, West Papua

Sun, 16 Feb 2025 00:00:00 +0000

The waters of Bintuni Bay have abundant natural resources, especially aquatic biota. One of the aquatic biota with high economic value is the Jerbung shrimp (Penaeus merguiensis). Currently, information about the biological aspects of shrimp in the waters of Bintuni Bay is still very lacking. Specifically, the aim of this research is to examine the size structure, first caught size (L50%), infinity size (L∞), growth patterns, condition factors and gonad maturity level (TKG) of Jerbung shrimp in the waters of Bintuni Bay. The research method used is the survey method. The research was carried out from March to April 2023. The results showed that the average carapace length and weight of male shrimp were 4.6 cm and 14.8 gr. Meanwhile, the average shell length and weight of female shrimp are 5.4 cm and 25.8 grams. The L50% value of male and female shrimp is 5.3 cm and 5.8 cm, the ½ L∞ value of male and female shrimp is 3.4 cm and 3.5 cm. If L50% > ½ L∞ means the size of the shrimp caught is quite large. The growth pattern of male and female shrimp is negative allometry (b = 0.1035 and b = 0.7424). The condition factor values for male and female shrimp are 0.31 and 1.73. The results of TKG observations showed that 75.2% of female shrimp were in TKG I and II, meaning that 50% of the shrimp caught had not yet reached TGK III and IV at the time of the research.

Mapping the Role and Collaboration of Stakeholders in Ecotourism Management and Creative Economic Development of the Tapis Lampung Center in the Lugusari Tourist Village, Lampung Province

Meyliana Astriyantika, Enggar Dwi Cahyo — Sun, 16 Feb 2025 00:00:00 +0000

The latest tourism development is focused on the attraction of living activities and rural resources by highlighting various potential regional authenticity. As a derivative of the concept of sustainable tourism development, the development of tourism villages directly contributes to the preservation and introduction of local culture, superior agricultural and plantation activities, as well as triggering the creation of various creative ideas to support the local economy. The selection of this research location was based on research that the Governor of Lampung Province had issued a 2022 decree determining 3 tourism villages focused on developing Lampung Tapis centers, one of which was Lugusari Tourism village, Pagelaran District, Pringsewu Regency. This was welcomed very positively by various welcome who involved themselves directly in developing and promoting various potentials and attractions in the Lugusari Tourism village. Seeing the large number of contributes entering, it is important to identify each stakeholder and carry out role mapping so that the direction of effective and optimal collaboration can be seen. Data were collected by observation, interviews, and literature studies, then analyzed descriptively qualitatively. Based on the research results, it was identified that the tourism pentahelix plays an active role in the management of the Lugusari Tourism village which includes government, private, academic, media, and especially the community stakeholders. The flow of stakeholder coordination in the Lugusari Tourism village is centered on the village government which is at the lead of control regarding regulatory direction, ideas, concepts and program implementation as well as controlling the management conditions of the Lugusari Tourism village. Furthermore, the role of stakeholders in Lugusari Tourism village is divided into 5, namely policy creator (government), Regulator (government), Facilitator (government, academics, business and media), Accelerator (Business and Media), and Implementer (Community).