Microbial communities in the biological filter and waste sludge compartments of a marine recirculating aquaculture system were examined to determine the presence and activity of anaerobic ammonium-oxidizing (anammox) bacteria. Community DNA was extracted from aerobic and anaerobic fixed-film biofilters and the anaerobic sludge waste collection tank and was analyzed by amplifying 16S rRNA genes ...

The goal of this study was to produce a detailed aquaculture production model incorporating constraints unique to closed system culture and to conduct a formal economic analysis of closed system operation. Results generated by this model indicate that less than perfect management ability can eliminate the normal advantages associated with using high protein feed. While higher protein levels pro...

Artikel ini melaporkan kegiatan pengabdian kepada masyarakat yang bertujuan meningkatkan pengetahuan dan keterampilan peserta dalam memanfaatkan maggot black soldier flies (BSF) implementasi recirculating aquaculture system (RAS) untuk efektivitas efisiensi proses budidaya lele bagi kelompok di Desa Mojo. Pengabdian dilakukan melalui 2 kegiatan, 1) pendekatan community based research (CBR) deng...

Flavobacterium branchiophilum a causative agent of Bacterial Gill Disease (BGD) is a filamentous gram-negative bacteria which produce yellow round colonies in cytophaga agar medium. The outbreak of disease were reported from different part of world. In this study we examined 75 fish sample from farms with a recirculating aquaculture system (n=25), pools with a well water source farms (n=25) and...

A recirculating aquaculture system was developed to hold native fishes for experimental pumping trails at the U.S. Bureau of Reclamation’s Tracy Fish Collection Facility (TFCF), Sacramento-San Joaquin Delta, California. The TFCF operates to prevent the entrainment of juvenile and adult fishes, including endangered species, into the Delta Mendota Canal. TFCF uses louvers to direct into the colle...

Abstract Good water quality in recirculating aquaculture systems (RAS) is crucial for ensuring the successful growth and survival of reared species. So far, there are no regulations which parameters should be measured RAS, each farmer decides to follow. Traditionally, have been at certain intervals with handheld sensors laboratory analyses, can labour intensive. Currently, a variety monitoring ...

Recirculating aquaculture systems (RAS) are promising candidates for the sustainable development of industry. A current limitation RAS is production and potential accumulation nitrogenous wastes, ammonium (NH4+), nitrite (NO2?) nitrate (NO3?), which could affect fish health welfare. In a previous experiment, we have demonstrated that marine anammox bacteria Candidatus Scalindua was candidate to...