Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis

Poul S. Larsen, Kim Lundgreen, Hans Ulrik Riisgård

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Abstract

The growth rates of blue mussels Mytilus edulis on ropes in the Great Belt (Denmark) have been studied during the growth season of one year, from settling to about 30 mm shell length mussels, covering > 4 decades of body mass. Measured shell length (L, mm) and dry weight of soft parts (W, μg) for L > 10 mm followed a power-law (W = 2.15L 3.40) which supplemented an existing power-law for L < 10 mm (W = 24.7 L 2.42) to establish that somatic growth changes character at L ≈ 10 mm and W ≈ 10 mg. Results of specific growth rates based on dry weight of soft parts (μ = dlnW/dt) compared well with predictions based on a previously developed bioenergetic growth model (BEG) for W > 10 mg (μ =aW b, a = 0.871× C - 0.986; b = -0.34, with μ in % d -1 and W in g) which explicitly takes into account the prevailing chl a concentration C (μg L -1). Results for W < 10 mg also correlated well by the power-law (μ =aW b), now with exponent b = -0.13 close to the suggested value (b ≈ -0.1) from experimentally established correlations for filtration and respiration rate of post-metamorphic mussels. Using the stated W(L)-relation for L > 10 mm the growth model has been expressed in terms of shell length specific growth rate (μL ≡ dlnL/dt = αL β) by which data on shell length was well correlated, including the influence of chl a concentration. Supplementary growth data from mussels in suspended net-bags at the same site illustrated differences ascribed to lack of competition for space and food, and literature data on shell length from cage- growth of mussels in the brackish Baltic Sea support the present correlations. It is argued that the allometric transitions that take place around W ≈ 10 mg and L ≈ 10 mm during the ontogeny of M. edulis is most likely universal and not restricted to first year growth of juvenile (young) mussels during the productive season.

Original languageEnglish
Title of host publicationMussels : Ecology, Life Habits and Control
EditorsJ. Nowak , M. Kozlowski
PublisherNova Science Publishers
Publication date2013
Pages101-122
Chapter4
ISBN (Print)978-1-62618-083-3
Publication statusPublished - 2013

Fingerprint

shell (molluscs)
Mytilus edulis
energy metabolism
mussels
ontogeny
prediction
specific growth rate
growth models
ropes
respiratory rate
Baltic Sea
Denmark
bags
cages

Keywords

  • Allometric transitions
  • Energy budget
  • Mytilus edulis
  • Ontogeny
  • Specific growth rate

Cite this

Larsen, P. S., Lundgreen, K., & Riisgård, H. U. (2013). Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis. In J. Nowak , & M. Kozlowski (Eds.), Mussels: Ecology, Life Habits and Control (pp. 101-122). Nova Science Publishers.
Larsen, Poul S. ; Lundgreen, Kim ; Riisgård, Hans Ulrik. / Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis. Mussels: Ecology, Life Habits and Control. editor / J. Nowak ; M. Kozlowski. Nova Science Publishers, 2013. pp. 101-122
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abstract = "The growth rates of blue mussels Mytilus edulis on ropes in the Great Belt (Denmark) have been studied during the growth season of one year, from settling to about 30 mm shell length mussels, covering > 4 decades of body mass. Measured shell length (L, mm) and dry weight of soft parts (W, μg) for L > 10 mm followed a power-law (W = 2.15L 3.40) which supplemented an existing power-law for L < 10 mm (W = 24.7 L 2.42) to establish that somatic growth changes character at L ≈ 10 mm and W ≈ 10 mg. Results of specific growth rates based on dry weight of soft parts (μ = dlnW/dt) compared well with predictions based on a previously developed bioenergetic growth model (BEG) for W > 10 mg (μ =aW b, a = 0.871× C - 0.986; b = -0.34, with μ in {\%} d -1 and W in g) which explicitly takes into account the prevailing chl a concentration C (μg L -1). Results for W < 10 mg also correlated well by the power-law (μ =aW b), now with exponent b = -0.13 close to the suggested value (b ≈ -0.1) from experimentally established correlations for filtration and respiration rate of post-metamorphic mussels. Using the stated W(L)-relation for L > 10 mm the growth model has been expressed in terms of shell length specific growth rate (μL ≡ dlnL/dt = αL β) by which data on shell length was well correlated, including the influence of chl a concentration. Supplementary growth data from mussels in suspended net-bags at the same site illustrated differences ascribed to lack of competition for space and food, and literature data on shell length from cage- growth of mussels in the brackish Baltic Sea support the present correlations. It is argued that the allometric transitions that take place around W ≈ 10 mg and L ≈ 10 mm during the ontogeny of M. edulis is most likely universal and not restricted to first year growth of juvenile (young) mussels during the productive season.",
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Larsen, PS, Lundgreen, K & Riisgård, HU 2013, Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis. in J Nowak & M Kozlowski (eds), Mussels: Ecology, Life Habits and Control. Nova Science Publishers, pp. 101-122.

Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis. / Larsen, Poul S.; Lundgreen, Kim; Riisgård, Hans Ulrik.

Mussels: Ecology, Life Habits and Control. ed. / J. Nowak ; M. Kozlowski. Nova Science Publishers, 2013. p. 101-122.

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

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T1 - Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis

AU - Larsen, Poul S.

AU - Lundgreen, Kim

AU - Riisgård, Hans Ulrik

PY - 2013

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N2 - The growth rates of blue mussels Mytilus edulis on ropes in the Great Belt (Denmark) have been studied during the growth season of one year, from settling to about 30 mm shell length mussels, covering > 4 decades of body mass. Measured shell length (L, mm) and dry weight of soft parts (W, μg) for L > 10 mm followed a power-law (W = 2.15L 3.40) which supplemented an existing power-law for L < 10 mm (W = 24.7 L 2.42) to establish that somatic growth changes character at L ≈ 10 mm and W ≈ 10 mg. Results of specific growth rates based on dry weight of soft parts (μ = dlnW/dt) compared well with predictions based on a previously developed bioenergetic growth model (BEG) for W > 10 mg (μ =aW b, a = 0.871× C - 0.986; b = -0.34, with μ in % d -1 and W in g) which explicitly takes into account the prevailing chl a concentration C (μg L -1). Results for W < 10 mg also correlated well by the power-law (μ =aW b), now with exponent b = -0.13 close to the suggested value (b ≈ -0.1) from experimentally established correlations for filtration and respiration rate of post-metamorphic mussels. Using the stated W(L)-relation for L > 10 mm the growth model has been expressed in terms of shell length specific growth rate (μL ≡ dlnL/dt = αL β) by which data on shell length was well correlated, including the influence of chl a concentration. Supplementary growth data from mussels in suspended net-bags at the same site illustrated differences ascribed to lack of competition for space and food, and literature data on shell length from cage- growth of mussels in the brackish Baltic Sea support the present correlations. It is argued that the allometric transitions that take place around W ≈ 10 mg and L ≈ 10 mm during the ontogeny of M. edulis is most likely universal and not restricted to first year growth of juvenile (young) mussels during the productive season.

AB - The growth rates of blue mussels Mytilus edulis on ropes in the Great Belt (Denmark) have been studied during the growth season of one year, from settling to about 30 mm shell length mussels, covering > 4 decades of body mass. Measured shell length (L, mm) and dry weight of soft parts (W, μg) for L > 10 mm followed a power-law (W = 2.15L 3.40) which supplemented an existing power-law for L < 10 mm (W = 24.7 L 2.42) to establish that somatic growth changes character at L ≈ 10 mm and W ≈ 10 mg. Results of specific growth rates based on dry weight of soft parts (μ = dlnW/dt) compared well with predictions based on a previously developed bioenergetic growth model (BEG) for W > 10 mg (μ =aW b, a = 0.871× C - 0.986; b = -0.34, with μ in % d -1 and W in g) which explicitly takes into account the prevailing chl a concentration C (μg L -1). Results for W < 10 mg also correlated well by the power-law (μ =aW b), now with exponent b = -0.13 close to the suggested value (b ≈ -0.1) from experimentally established correlations for filtration and respiration rate of post-metamorphic mussels. Using the stated W(L)-relation for L > 10 mm the growth model has been expressed in terms of shell length specific growth rate (μL ≡ dlnL/dt = αL β) by which data on shell length was well correlated, including the influence of chl a concentration. Supplementary growth data from mussels in suspended net-bags at the same site illustrated differences ascribed to lack of competition for space and food, and literature data on shell length from cage- growth of mussels in the brackish Baltic Sea support the present correlations. It is argued that the allometric transitions that take place around W ≈ 10 mg and L ≈ 10 mm during the ontogeny of M. edulis is most likely universal and not restricted to first year growth of juvenile (young) mussels during the productive season.

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KW - Energy budget

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KW - Ontogeny

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BT - Mussels

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Larsen PS, Lundgreen K, Riisgård HU. Bioenergetic model predictions of actual growth and allometric transitions during ontogeny of juvenile blue mussels Mytilus edulis. In Nowak J, Kozlowski M, editors, Mussels: Ecology, Life Habits and Control. Nova Science Publishers. 2013. p. 101-122