Analysis of Phytoplankton Structure Community, Water Quality and Cultivation Performance in Litopenaeus vannamei Intensive Pond Located in Tembokrejo Village, Muncar, Banyuwangi

Abstract

Phytoplankton plays an important role in Litopenaeus vannamei cultivation. It plays a role as natural feed, water quality control, and indicator of shrimp cultivation success. The community structure of phytoplankton can be influenced by organic matter concentration in ponds. On the other hand, water quality and phytoplankton community structure also influence the productivity of shrimp cultivation. The research aimed to analyze the phytoplankton structure community, cultivation performance and the water quality in one of vananmei shrimp cultivation located in Muncar District. The research used the descriptive method. The research was conducted in two shrimp intensive system ponds in Tembokrejo Village, Muncar District, Banyuwangi, on February-March 2020. Parameters observed were composition, diversity, and density of phytoplankton, water quality parameters, and production performance in each pond. Based on the results, five phytoplankton classes was found: Bacillariophyceae (12 genera), Chlorophyceae (4 genera), Cyanophyceae (8 genera), Dinophyceae (2 genera), and Euglenophyceae (1 genus). Based on the density, Cyclotella and Chlorella were dominated in both ponds. Diversity index values on ponds 1 and ponds 2 were 1.64 and 1.71, respectively. The productivity of both ponds was 10.794 kg.ha -1 and 11.698 kg.ha -1 , FCR (Feed Conversion Ratio) were 0.99 and 1.18, and ADG (Average Daily Growth) on both ponds were 0.16 g.day -1 . Water quality parameters in both ponds showed an optimal range for vannamei cultivation, except phosphate, which is quite high. Overall, the cultivation performance of both ponds in our research showed good results. However, cultivation performance obtained in this research was not on its best performance yet due to Infectious Myonecrosis (IMNV) infection.

Growth of Vannamei Shrimp (Litopenaeus vannamei) in Intensive Cultivation Systems

“…Daily growth yield (ADG) ranges from 0.10-0.41 grams (Figure 3), which is quite good for vaname shrimp cultivation. ADG values between 0.12-0.17 grams/day are still considered good for vaname shrimp cultivation, with an ideal value of 0.22 grams/day (Katmoko et al, 2021). The ADG value increased from week 8 to week 10 but decreased at week 11.…”

“…Light is used by phytoplankton in the photosynthesis process (Musa et al, 2023). Low brightness can also indicate that the particles and phytoplankton in the pond are too dense so water changes need to be carried out (Katmoko et al, 2021).…”

Community structure of periphyton on bamboo substrate in whiteleg shrimp (Litopenaeus vannamei Boone, 1931) pond with semi-biofloc system

“…The low brightness value is presumably because of suspended particles in the waters, such as aquaculture organisms and organic materials (plankton, feed residues, and feces). Based on Katmoko et al (2021), pond brightness is affected by plankton (phytoplankton and zooplankton) and dissolved materials. The low brightness results in low dissolved oxygen levels.…”

Short Communication: Efficiency economic of whiteleg shrimp Litopenaeus vannamei (Boone 1931) cultivation with a household scale biofloc system

“…Semi-intensive shrimp ponds with a high abundance of plankton at the time of fry stocking had a better survival rate (Katmoko et al 2021), which was 92.5% with a feed conversion value of 1.3. While the abundance of plankton is low, the survival rate is 40.13%, and feed conversion is 1.9 (Pratama et al 2017).…”