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INDONESIA
Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan
Published by Universitas Lampung
ISSN : 2301816X     EISSN : 25797638     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 7 Documents
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Search results for , issue "Vol 13, No 2 (2025): March 2025" : 7 Documents clear
EFFECTIVENESS OF THE AQUATIC PLANT Azolla microphylla FOR REDUCING CONTAMINANTS IN TOFU LIQUID WASTE Fahriansyah, Rifan; Hasan, Zahidah; Rochima, Emma; Arief, Mochamad Candra W.
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1661-1675

Abstract

One of the industrial activities that produces a lot of liquid waste is the tofu industry. Most of the liquid waste from industry flows directly into the sewer without prior treatment. This research aimed to determine the best plant biomass for reducing contaminants in tofu liquid waste. This research used an experimental method with a completely randomized design with 4 treatments and 3 replications, namely A (without addition of Azolla), B (addition of Azolla 250 grams), C (addition of Azolla 3000 grams), and D (addition of Azolla 350 grams). Tofu waste samples were obtained from the Cheese Tofu Factory located in the Cibuntu Tofu Industrial Center, Bandung City. The results of research for 15 days showed that the addition of Azolla microphylla could reduce the levels of contaminants in tofu liquid waste. The addition of 300 grams of Azolla microphylla plants to the phytoremediation process provided the best reduction in contaminants in tofu liquid waste by reducing BOD concentrations by 61%, nitrate by 77.49%, and phosphate by 68.44%.Keywords: Azolla microphylla, phytoremediation, tofu industry.
COMPARATIVE STUDY OF THE EFFECTS OF PROBIOTIC FEED IN CONVENTIONAL AND BIOFLOC CULTURE SYSTEMS ON THE GROWTH OF CATFISH (Clarias sp.) Syaifullah, Mohammad Mimbri; Martini, Ni Nyoman Dian; Yudasmara, Gede Ari
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1676-1689

Abstract

This research was carried out to determine the effect of probiotic feed on the growth of catfish (Clarias sp.) in two different culture systems. This research was carried out for 30 days using a randomized block design method, namely K (conventional group) and B (biofloc group), each with 3 replications. The data studied were catfish growth, survival, feed conver-sion and feed efficiency. Data collection was carried out 3 times, namely at the beginning, middle and end of the research. Growth and survival data were tested using the non-parametric Mann-Whitney U-test. The results showed that there were differences in catfish growth (P<0.05) in conventional and biofloc culture systems. The con-ventional group produced an average absolute weight of 5.9 grams and the biofloc group produced 6.3 grams. The absolute length of catfish in the conventional group averaged 10.1 cm and in the biofloc group it was 11.1 cm. Catfish survival data showed there was a significant difference (P<0.05). The survival value in the conventional group was 83%, while in the biofloc group it was 93.3%. The FCR value in the conventional group was 1.4 and in the biofloc group was 1.3. Catfish in the conventional group got a feed efficiency of 49% and in the biofloc group it was 51%.Keywords: Biofloc, Catfish, Conven-tional.
STRUCTURE OF THE MOLLUSK COMMUNITY IN THE INTERTIDAL ZONE OF TIRTAYASA BEACH, WAY TATAAN VILLAGE, TELUK BETUNG TIMUR DISTRICT, BANDAR LAMPUNG Trias, Silke; Yulianto, Herman; Kartini, Nidya
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1632-1642

Abstract

Tirtayasa Beach is a coastal tourism attraction in Bandar Lampung City, located in Way Tataan Village, East Teluk Betung District. The waters of Tirtayasa Beach have significant tourism potential due to their natural beauty. However, a decline in water quality, caused by increased human activities and domestic waste input around the beach, has affected the physical, chemical, and biological conditions of the waters. Mollusks can serve as indicators of water quality. Therefore, the structure of the mollusk community can be used to assess the condition of these waters. This study aimed to evaluate the structure of mollusk populations and analyze the influence of water quality on mollusk communities in the intertidal zone of Tirtayasa Beach, East Teluk Betung District, Lampung. The selection of study locations/stations and observation points was carried out using the purposive sampling method. The mollusks identified in the waters of Tirtayasa Beach belong to two classes: Gastropoda and Bivalvia. The Gastropoda class, with eight species, dominated across the three stations, with Cerithium kobelti being the most prevalent species. The parameter that significantly affected mollusk abundance at Station 1 was pH. At Station 2, depth, brightness, dissolved oxygen (DO), and salinity were influential. At Station 3, total suspended solids (TSS) and temperature were the key influencing factors.  Keywords: Abundance, biodiversity, evenness index, principal component analysis.
THE LESSON LEARNED FROM MENTAWAI TSUNAMI, OCTOBER 25th, 2010 Mutmainah, Herdiana
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1690-1698

Abstract

The Mentawai Tsunami, October 25th, 2010, was caused by collision between the Indian-Australian plate with the Eurasian plate that caused the fault in the Sunda subduction zone megathrust. Tsunami with magnitude 7.7 MW occurred at 21:42:22 pm which epicenter at 3.484oSL and 100.114oEL, 20.6 km depth in the Indian Ocean, 110 km from the North Pagai. Tsunami Mentawai, 2010 is started by an underwater earthquake and called as slow tsunami because the ground shaking is quite weak in long periods but produce great waves. Mentawai tsunami cesarean parameters are strike 325o, dip 11.62o and slip 101.4625o. This research aims to know the lesson learned of The Mentawai Tsunami. The impact is coastal degradation, i.e. loss of small islands, abrasion and mangrove degradation. The lessons learned are people should be aware of natural sign of tsunami, evacuate themselves to high places, avoid the inundation area, take the best decision based on situation. Tsunami mitigation must be implemented to save lives and minimize risks.Keywords: Mentawai Tsunami, tsunami impact, lesson learned.
EFFECT OF SALINITY ON SPECIFIC GROWTH RATE AND CANNIBALISM OF TAMBAQUI (Colossoma macropomum) JUVENILES IN A CONTROLLED ENVIRONMENT Ramadhani, Gilbran Muhammad; Pratiwy, Fittrie Meyllianawaty; Iskandar, ,; Herawati, Titin
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p%p

Abstract

The objective of this study was to analyze the effect of salinity on the reduction of cannibalism in tambaqui juveniles and their specific growth rate. The study lasted for 35 days. The research method used was a completely randomized design (CRD) experiment with two treatments and six replications. The treatments were (A) no salinity and (B) salinity at 5 ppt. The parameters observed in this study were specific growth rate, survival rate, cannibalism, and water quality. The results showed that using 5 ppt salinity (B) reduced cannibalism in tambaqui juveniles, while specific growth rate and survival rate did not differ significantly between treatments. Keywords: Tambaqui, cannibalism, salinity, survival rate.
THE GOBY FISH COLLECTION IN THE WATERSHED AREA OF TOLITOLI, CENTRAL SULAWESI, INDONESIA Laheng, Suardi; Paisal, Moh.; Irmawati, Irmawati; Selvi, Selvi; Nurfauzan, Malik
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1650-1660

Abstract

Central Sulawesi has a diverse diversity of ichthyofauna. Gobies are one type of fish abundant in fresh water and can be found from the upstream to the downstream of the river. The abundance and information on the types of gobies are still limited in several rivers in Central Sulawesi. Tolitoli Regency is one of the areas that still has minimal information on the diversity of gobies, so it is necessary to research collecting gobies in the watershed in Tolitoli Regency. The research was conducted from July 2020 to December 2020 in the watershed of Baolan District (Dadakitan Village, Buntuna Village, and Tambun Village), Tolitoli, Central Sulawesi. The sampling locations in the watershed are divided into 3 parts, namely the upstream, middle, and downstream. Gobies were collected using the pore sampling method by preparing eight observation stations. Specimens were collected using nets (size 20 x 20 cm) with the method of catching against the current. The caught fish were kept in a mini aquarium and then documented using a digital camera. Furthermore, the fish were preserved using 70% alcohol for identification. The results of the study showed that the collection of goby fish in the Tolitoli watershed, Central Sulawesi, was found to be 408 individuals consisting of 4 families (Butidae, Eleotridae, Gobiidae, Oxudercidae), 12 genera (Butis, Oxyeleotris, Belobranchus, Eleotris, Giuris, Redigobius, Awaous, Lentipes, Stiphodon, Sicyopus, Sicyopterus), and 16 species (Butis sp., Redigobius sp., Sicyopterus sp., Stiphodon semoni, Stiphodon sp., Awaous sp., Belobranchus sp., Schismatogobius sp.1, Schismatogobius sp.2, Eleotris fusca, Oxyeleotris sp., Giuris sp., Sicyopus zosterophorus, Sicyopus sp.1, Sicyopus sp.2, Lentipes sp.). The highest abundance of goby fish species in the Tolitoli Watershed is Stiphodon semoni (47,79%).  Keywords: Amphidromus, sustainability, aquatic organisms.
SYMBIOTIC ASSOCIATIONS IN MARINE SPONGES Harpeni, Esti
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p%p

Abstract

The characteristics of the sponge structure, homogenous, flexible, and simple, but pervaded by canals and their ability for filter-feeding, may facilitate development of intimate associations with other organisms. This study reviewed the described symbiotic associations between marine sponges and other organisms as well as among marine sponge species. Associations in marine sponges show a wide range of relationships with their symbionts. These can range from mutually beneficial, to commensal, to parasitic or pathogenic. Sponge species also vary in the types of symbionts they host from facultative sponge associates that also live in other sheltered habitats, to obligate sponge associates that occupy a variety of sponge species, to obligate specialists on particular sponge species. The associations can cause the morphological alteration of the symbionts and other adaptive behaviour. Observations of new and unique associations were also discussed.

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