A proposed model for "environmentally clean" land-based culture of fish, bivalves and seaweeds

Muki Shpigel, Amir Neori, Dan M. Popper, Hillel Gordin

Research output: Contribution to journalArticlepeer-review


A model system is proposed, in which particulate and dissolved metabolites from the effluents of fish culture are removed by biofilters of bivalves (Crassostrea gigas and/or Tapes semidecussatus) and seaweeds (Ulva lactuca). The design utilizes ecological principles and the results of long-term pilot-scale trials with each of the four components of the system. Fresh sea water enters the fishponds, drains through an earthen sedimentation pond, a bivalve filtration unit and a seaweed filtration/production unit, and is finally discharged back into the sea. An additional loop recirculates water from the sedimentation pond through a bivalve production unit. The performance of each of the different components of the system is assessed in terms of total nitrogen budgets, which yield the following results: fish yield, 26% of the N introduced in the feed; bivalve yield, 14.5%; seaweed yield, 22.4%; settled feces, 32.8%; suspended and dissolved discharge back into the sea, only 4.25%. The harvested yields contain 63% of the N budget. The production of 1 kg of fish, requiring 3 kg of feed, is accompanied by the production of 3 kg of bivalves and 7.8 kg of seaweed. Each 100 m2 of fishponds requires 50 m2 of sedimentation ponds, 33 m3 of bivalve troughs and 42 m2 of seaweed ponds.

Original languageEnglish
Pages (from-to)115-128
Number of pages14
Issue number1-2
StatePublished - 1 Nov 1993
Externally publishedYes

ASJC Scopus subject areas

  • Aquatic Science


Dive into the research topics of 'A proposed model for "environmentally clean" land-based culture of fish, bivalves and seaweeds'. Together they form a unique fingerprint.

Cite this