Enhancing opportunistic polychaete communities under fish farms: an alternative concept for integrated aquaculture

Jansen, H.M.; Hansen, Pia Kupka; Brennan, Nathan P.; Dahlgren, Thomas G.; Fang, Jinghui; Nederlof, M.A.J.; Strohmeier, Tore; Sveier, Harald; Strand, Øivind

doi:10.3354/aei00318

Cited by 13 publications

(12 citation statements)

References 28 publications

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“…m −2 . Quantitative data on polychaete abundances underneath salmon farms in Norway is limited, as the depth of fjord systems makes it a challenge to measure these abundances (Jansen et al 2019). However, in the current study, the estimated densities required for 100% waste removal (Table 5) fall within the ranges reported in the literature.…”

Section: Farm-scale Bioremediationsupporting

confidence: 65%

“…This method can be compared with suspended mussel cultivation (Smaal 2002), in which an artificial substrate is provided (ropes in case of mussels, benthic trays in case of polychaetes) on which juveniles can settle and grow and which are eventually harvested. The fast colonization of benthic production systems shown by Jansen et al (2019) in combination with the high bioremediation potential estimated in this study highlights the opportunity to boost native Ophryotrocha species as an extractive component in open water IMTA systems.…”

Section: Farm-scale Bioremediationmentioning

confidence: 74%

“…cultivated in a hatchery were introduced under a fish farm. Instead of introducing the polychaetes in coupled integrated systems, there are also opportunities to enhance native polychaete species, as shown by Jansen et al (2019) for Ophryotrocha spp. and other species.…”

Section: Farm-scale Bioremediationmentioning

confidence: 99%

“…and O. craigsmithi have potential as extractive species for cultivation in connection with Atlantic salmon Salmo salar. In addition, development of benthic cultivation methods for these polychaete species is ongoing (Jansen et al 2019). Apart from increasing the productivity of a production system, the IMTA approach also strives to reduce wastes produced by fed species via extractive species (Chopin 2013, Hughes & Black 2016.…”

Section: Introductionmentioning

confidence: 99%

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Application of polychaetes in (de)coupled integrated aquaculture: an approach for fish waste bioremediation

Nederlof

Fang

Dahlgren

et al. 2020

Aquacult. Environ. Interact.

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Development of benthic components within integrated multi-trophic aquaculture (IMTA) systems warrants more attention, and the development of polychaetes as an extractive component in IMTA systems is ongoing. This study estimates the bioremediation potential of Capitella sp. and Ophryotrocha craigsmithi for coupled and decoupled salmon-driven IMTA. In coupled IMTA, polychaetes receive fresh faeces, while in decoupled IMTA, preservation of faeces is applied. Respiration and ammonia excretion rates were measured for polychaetes fed fresh, oven-dried or acidified salmon faeces, and combined with nutrients incorporated into tissue growth, to estimate nutrient requirements. Nutrient requirements were subsequently used to evaluate bioremediation potential. Metabolic rates were highest for O. craigsmithi and contributed notably to their overall nutrient requirement (20-30%). For the 2 polychaete species, nutrient requirements ranged from 5 to 26 mg C and from 2 to 6 mg N g-1 AFDW d-1. These requirements were comparable with or higher than other polychaete species, highlighting the potential for fish waste bioremediation by Capitella sp. and O. craigsmithi. Preserved diets reduced bioremediation potential 1.5 and 3-5 times for, respectively, Capitella sp. and O. craigsmithi. Assuming that polychaetes are efficient fish-faeces convertors, the bioremediation potential indicates that benthic cultivation units containing 65000-95000 ind. m-2 of Capitella sp. or 36000-194000 ind. m-2 of O. craigsmithi can convert the daily organic waste flux deposited below an average salmon farm. These densities were within ranges reported for wild populations, indicating that, based on the bioremediation potential, development of benthic IMTA with these 2 polychaete species seems realistic and efficient for waste conversion.

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Section: Farm-scale Bioremediationsupporting

confidence: 65%

Section: Farm-scale Bioremediationmentioning

confidence: 74%

Section: Farm-scale Bioremediationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of polychaetes in (de)coupled integrated aquaculture: an approach for fish waste bioremediation

Nederlof

Fang

Dahlgren

et al. 2020

Aquacult. Environ. Interact.

Self Cite

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show abstract

“…In the current literature, mariculture bioremediation focused especially on sediment restoration and on the role of the detritivore community [9][10][11][12][13][14]. However, according to recent practical approaches, a bioremediation effect on the water column can also be corroborated, especially in environments submitted to lateral drift, where nutrient loading can be efficiently exploited directly by the filter feeders' community [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

An Innovative IMTA System: Polychaetes, Sponges and Macroalgae Co-Cultured in a Southern Italian In-Shore Mariculture Plant (Ionian Sea)

Giangrande

Pierri

Arduini

et al. 2020

JMSE

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In this paper, we report data from the first year of rearing of a set of filter feeder bioremediator organisms: macrobenthic invertebrates (sabellid polychaetes and sponges), coupled with macroalgae, realized in a mariculture fish farm. This innovative integrated multi-trophic aquaculture (IMTA) system was realized at a preindustrial level in the Gulf of Taranto (southern Italy, northern Ionian Sea), within the framework of the EU Remedia Life project. Long lines containing different collector typologies were placed around the fish breeding cages. Vertical collectors were utilized for both polychaetes and sponges, whilst macroalgae were cultivated in horizontal collectors. Data on the growth and mortality of the target species after the first year of rearing and cultivation are given together with their biomass estimation. Polychaete biomass was obtained from natural settlement on ropes previously hung in the system, while sponges and macroalgae were derived from explants and/or inocules inserted in the collectors. The description of the successional pattern occurring on collectors used for settling until reaching a “stable” point is also described, with indications of additional filter feeder macroinvertebrates other than polychaetes and sponges that are easily obtainable and useful in the system as bioremediators as well. The results demonstrate an easy, natural obtaining of large biomass of sabellid polychaetes settling especially from about a 4 to 10 m depth. Sponges and macroalgae need to be periodically cleaned from the fouling covering. The macroalgae cycle was different from that of invertebrates and requires the cultivation of two different species with about a 6-month cycle for each one. The present study represents one of the first attempts at IMTA in the Mediterranean area where invertebrates and macroalgae are co-cultured in an inshore fish farm. Possible utilization of the produced biomass is also suggested.

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Salmon Farming: Is It Possible to Relate Its Impact to the Waste Remediation Ecosystem Service?

Marín

Borja

Soto

et al. 2021

Ecosystem Services in Patagonia

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Enhancing opportunistic polychaete communities under fish farms: an alternative concept for integrated aquaculture

Cited by 13 publications

References 28 publications

Application of polychaetes in (de)coupled integrated aquaculture: an approach for fish waste bioremediation

Application of polychaetes in (de)coupled integrated aquaculture: an approach for fish waste bioremediation

An Innovative IMTA System: Polychaetes, Sponges and Macroalgae Co-Cultured in a Southern Italian In-Shore Mariculture Plant (Ionian Sea)

Salmon Farming: Is It Possible to Relate Its Impact to the Waste Remediation Ecosystem Service?

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