Nutrient regeneration from feces and pseudofeces of mussel Mytilus edulis spat

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8 Citations (Scopus)

Abstract

Suspension-feeding mussels exert top-down grazing control on primary producers, and provide bottom-up feedback of regenerated nutrients. Besides direct excretion, an important pathway of nutrient regeneration is through the decomposition of feces and pseudofeces, of which mussels can produce large quantities. Information on mussel feces and pseudofeces quality and nutrient regeneration rates is scarce. Feces and pseudofeces, produced in varying proportions, are commonly treated as one pool. We determined nutrient regeneration rates of feces and pseudofeces decomposition in incubations using natural seawater and juvenile Mytilus edulis from spat collectors. Apart from one 1993 trial, our results are the first to present nutrient regeneration dynamics of feces and pseudofeces separately. Dissolved inorganic nitrogen (DIN) and phosphate regeneration continued at stable rates for approximately 3 wk, after which 13.1 and 12.4% of the available N and 8.7 and 7.9% of the available P was regenerated from feces and pseudofeces, respectively. Rates of silicate regeneration declined continuously, which we attribute to its accumulation in the experimental setup. Coinciding environmental levels of DIN and silicate at growth-limiting levels indicate the potential ecological relevance of biodeposit decomposition. Overall DIN regeneration rates were similar between feces and pseudofeces, but depletion of ammonia was initially more rapid for pseudofeces due to stronger nitrification. Phosphate and silicate regeneration rates were 1.1 and 1.4 times greater from feces than pseudofeces, respectively. Future research should clarify the role of bivalve suspension feeders in controlling Si and P availability in coastal ecosystems in relationship to the proportion of pseudofeces generated, which depends on food concentration.
Original languageEnglish
Pages (from-to)107-120
JournalMarine Ecology Progress Series
Volume534
DOIs
Publication statusPublished - 2015

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spit
Mytilus edulis
feces
mussels
regeneration
nutrient
nutrients
dissolved inorganic nitrogen
silicates
silicate
decomposition
degradation
phosphate
phosphates
collectors
excretion
nitrification
rate
bivalve
Bivalvia

Cite this

@article{9858008ab9fd4a79af646e1e82f8c763,
title = "Nutrient regeneration from feces and pseudofeces of mussel Mytilus edulis spat",
abstract = "Suspension-feeding mussels exert top-down grazing control on primary producers, and provide bottom-up feedback of regenerated nutrients. Besides direct excretion, an important pathway of nutrient regeneration is through the decomposition of feces and pseudofeces, of which mussels can produce large quantities. Information on mussel feces and pseudofeces quality and nutrient regeneration rates is scarce. Feces and pseudofeces, produced in varying proportions, are commonly treated as one pool. We determined nutrient regeneration rates of feces and pseudofeces decomposition in incubations using natural seawater and juvenile Mytilus edulis from spat collectors. Apart from one 1993 trial, our results are the first to present nutrient regeneration dynamics of feces and pseudofeces separately. Dissolved inorganic nitrogen (DIN) and phosphate regeneration continued at stable rates for approximately 3 wk, after which 13.1 and 12.4{\%} of the available N and 8.7 and 7.9{\%} of the available P was regenerated from feces and pseudofeces, respectively. Rates of silicate regeneration declined continuously, which we attribute to its accumulation in the experimental setup. Coinciding environmental levels of DIN and silicate at growth-limiting levels indicate the potential ecological relevance of biodeposit decomposition. Overall DIN regeneration rates were similar between feces and pseudofeces, but depletion of ammonia was initially more rapid for pseudofeces due to stronger nitrification. Phosphate and silicate regeneration rates were 1.1 and 1.4 times greater from feces than pseudofeces, respectively. Future research should clarify the role of bivalve suspension feeders in controlling Si and P availability in coastal ecosystems in relationship to the proportion of pseudofeces generated, which depends on food concentration.",
author = "{van Broekhoven}, W. and H.M. Jansen and M.C.J. Verdegem and E. Struyf and K. Troost and H.J. Lindeboom and A.C. Smaal",
year = "2015",
doi = "10.3354/meps11402",
language = "English",
volume = "534",
pages = "107--120",
journal = "Marine Ecology Progress Series",
issn = "0171-8630",
publisher = "Inter Research",

}

Nutrient regeneration from feces and pseudofeces of mussel Mytilus edulis spat. / van Broekhoven, W.; Jansen, H.M.; Verdegem, M.C.J.; Struyf, E.; Troost, K.; Lindeboom, H.J.; Smaal, A.C.

In: Marine Ecology Progress Series, Vol. 534, 2015, p. 107-120.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Nutrient regeneration from feces and pseudofeces of mussel Mytilus edulis spat

AU - van Broekhoven, W.

AU - Jansen, H.M.

AU - Verdegem, M.C.J.

AU - Struyf, E.

AU - Troost, K.

AU - Lindeboom, H.J.

AU - Smaal, A.C.

PY - 2015

Y1 - 2015

N2 - Suspension-feeding mussels exert top-down grazing control on primary producers, and provide bottom-up feedback of regenerated nutrients. Besides direct excretion, an important pathway of nutrient regeneration is through the decomposition of feces and pseudofeces, of which mussels can produce large quantities. Information on mussel feces and pseudofeces quality and nutrient regeneration rates is scarce. Feces and pseudofeces, produced in varying proportions, are commonly treated as one pool. We determined nutrient regeneration rates of feces and pseudofeces decomposition in incubations using natural seawater and juvenile Mytilus edulis from spat collectors. Apart from one 1993 trial, our results are the first to present nutrient regeneration dynamics of feces and pseudofeces separately. Dissolved inorganic nitrogen (DIN) and phosphate regeneration continued at stable rates for approximately 3 wk, after which 13.1 and 12.4% of the available N and 8.7 and 7.9% of the available P was regenerated from feces and pseudofeces, respectively. Rates of silicate regeneration declined continuously, which we attribute to its accumulation in the experimental setup. Coinciding environmental levels of DIN and silicate at growth-limiting levels indicate the potential ecological relevance of biodeposit decomposition. Overall DIN regeneration rates were similar between feces and pseudofeces, but depletion of ammonia was initially more rapid for pseudofeces due to stronger nitrification. Phosphate and silicate regeneration rates were 1.1 and 1.4 times greater from feces than pseudofeces, respectively. Future research should clarify the role of bivalve suspension feeders in controlling Si and P availability in coastal ecosystems in relationship to the proportion of pseudofeces generated, which depends on food concentration.

AB - Suspension-feeding mussels exert top-down grazing control on primary producers, and provide bottom-up feedback of regenerated nutrients. Besides direct excretion, an important pathway of nutrient regeneration is through the decomposition of feces and pseudofeces, of which mussels can produce large quantities. Information on mussel feces and pseudofeces quality and nutrient regeneration rates is scarce. Feces and pseudofeces, produced in varying proportions, are commonly treated as one pool. We determined nutrient regeneration rates of feces and pseudofeces decomposition in incubations using natural seawater and juvenile Mytilus edulis from spat collectors. Apart from one 1993 trial, our results are the first to present nutrient regeneration dynamics of feces and pseudofeces separately. Dissolved inorganic nitrogen (DIN) and phosphate regeneration continued at stable rates for approximately 3 wk, after which 13.1 and 12.4% of the available N and 8.7 and 7.9% of the available P was regenerated from feces and pseudofeces, respectively. Rates of silicate regeneration declined continuously, which we attribute to its accumulation in the experimental setup. Coinciding environmental levels of DIN and silicate at growth-limiting levels indicate the potential ecological relevance of biodeposit decomposition. Overall DIN regeneration rates were similar between feces and pseudofeces, but depletion of ammonia was initially more rapid for pseudofeces due to stronger nitrification. Phosphate and silicate regeneration rates were 1.1 and 1.4 times greater from feces than pseudofeces, respectively. Future research should clarify the role of bivalve suspension feeders in controlling Si and P availability in coastal ecosystems in relationship to the proportion of pseudofeces generated, which depends on food concentration.

U2 - 10.3354/meps11402

DO - 10.3354/meps11402

M3 - Article

VL - 534

SP - 107

EP - 120

JO - Marine Ecology Progress Series

JF - Marine Ecology Progress Series

SN - 0171-8630

ER -