Budidaya rumput laut adalah salah satu sub-kegiatan akuakultur yang sangat potensial untuk dikembangkan di Kecamatan Banyuputih, Situbondo. Tujuan dari penelitian ini adalah untuk memetakan kesesuaian lahan budidaya di Kecamatan Banyuputih Situbondo guna dapat digunakan sebagai area budidaya rumput laut berdasarkan nilai indikator parameter kimia air yang ada. Penelitian ini dilaksanakan di perairan pesisir Kecamatan Banyuputih, Situbondo selama bulan januari-maret 2019 dengan konsep penelitian lapang dan analisa spasial dari pengambilan data kimia air (oksigen terlarut, fosfat, dan nitrat) yang kemudian dianalisis menggunakan metode Inverse Distance Weighting (IDW) dan overlay pada aplikasi GIS (Geographic Information System) guna mendapatkan model visualisasi peta tematik kesesuaian lahan. Hasil penelitian menunjukan parameter oksigen terlarut, fosfat, serta nitrat berfluktuasi secara variatif dan dinamis selama masa penelitian berlangsung, dengan kisaran konsentrasi 5.4-6.1 mg/L (DO), 0.8-1.6 mg/L (PO4), dan 2.1-3.7 mg/L (NO3). Kondisi tersebut, menandakan bahwa perairan pesisir Kecamatan Banyuputih cenderung subur dan layak untuk digunakan sebagai lahan budidaya akuakultur. Pernyataan tersebut juga bisa dilihat dari hasil visualisasi warna pada gambar kesesuaian lahan di peta tematik peneltian. Nilai konsentrasi dari parameter DO (5.4-6.1 mg/L), fosfat (0.8-1.6 mg/L), dan nitrat (2.1-3.7 mg/L) di perairan Kecamatan Banyuputih juga masih sesuai dengan ambang batas baku mutu kualitas air yang diperuntukan untuk budidaya rumput laut. Sehingga dari penelitian ini dapat disimpulkan, dari berbagai gambar peta tematik hasil analisis spasial berdasarkan indeks parameter kimia air yang ada, lokasi perairan Kecamatan Banyuputih sangat layak dan potensial untuk dikembangkan sebagai area budidaya rumput laut yang produktif.
Highlight ResearchIndicated that white feces at Vanammei appeared along with the appearance of the disease besides its main trigger that is Vibrio sp.Increase the availability of carbon for photosynthesis process of phytoplankton.Clinical symptom of shrimp attacked by white feces disease is indicated by a change in intestine.AbstractShrimp disease that currently causes economic loss to shrimp farmers is White Feces Disease (WFD). This disease appeared due to several factors, such as poor pond management, unhealthy shrimp seed, and poor water quality which resulted in the appearance of Vibrio sp. bacteria and Dinoflagellate. This study aimed to analyze the cause of WFD outbreak in vannamei shrimp pond. The study method through direct experiment was applied in shrimp pond. Sampling was performed three times in each feeding tray to collect ten shrimps. Overall, sampling was performed twice a week. The Sample Survey Method was used to collect sample in this study. Result of study showed that clinical symptom was observed through changes in pattern and behavior of vannamei shrimp during culture. However, this observation resulted in insignificant data. Vannamei shrimp infected WFD tended to swim slower and often rose to the surface with body color turned red. Moreover, total organic matter (TOM) increased on week-7 along with the increasing growth of plankton, particularly from the Dinoflagellate group. However, bacterial growth of Vibrio sp. on week-7 was insignificant, yet many shrimps were found dead with white feces during that period. The result of analysis indicated that white feces disease was caused by Dinoflagellate besides the main trigger, namely, Vibrio sp.
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