Resource allocation in Mytilus edulis on the shore and in suspended culture

Rodhouse, P. G.; Roden, C. M.; Hensey, M. P.; Ryan, T. H.

doi:10.1007/bf00394523

Cited by 70 publications

(48 citation statements)

References 23 publications

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“…It seems probable that spawning loss not only consists of the loss of gametes, but also of losses due to cell damage of reproductive tissue and loss of dissolved organic material. This could explain the large difference we found between SFG and tissue content during spawning: integrated over the spawning period, the difference between SFG and growth was 2132 m g C, 285 mg N and 43 m g P; loss ratios were 8.7 for C:N and 14.7 for N:P. Rodhouse et al (198413) give a C : N ratio of 3.19 for spermatozoa and 4.34 for eggs. These ratios are lower than our calculated C:N loss ratios, suggesting that there was additional loss, particularly of C .…”

Section: Discussionmentioning

confidence: 77%

Seasonal variation in C, N and P budgets and tissue composition of the mussel Mytilus edulis

Smaal¹,

Vonk²

1997

Mar. Ecol. Prog. Ser.

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Net C , N and P budgets of mussels were measured monthly in a field laboratory for a year. The calculated scope for growth was compared with the observed growth rates per month, for each element. Assuming ambient food, scope for growth was calculated and compared with changes in the tissue composition of mussels from a n estuarine field population. When total organic material was used as food, the calculated scope for growth overestimated the actual growth rates throughout the year. When phytoplankton was considered to be the main food source, the scope for growth provided by each element compared well with observed changes in tissue content, except during the spawning period. Durlng spawning, the difference between growth and scope for growth indicated a considerable loss of C, N and P. These losses exceeded estimated loss through gametes, indicating additional loss, ascnbed to tissue damage. Good correspondence was found between the predicted and observed C:N:P stoichiometry of mussels. Compared with phytoplankton, mussels contained relatively more N The absorption efficiencies of C, N and P were not significantly different, but in most cases the excretion ratios of C:N and N:P showed that N accumulated more than C and P. Average annual net growth efficiency was higher for P than for C and N. Elemental residence time in tissue, however, was highest for N. It is concluded that mussels are able to use N more efficiently than C and P, because they retain it better.

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Section: Discussionmentioning

confidence: 77%

Seasonal variation in C, N and P budgets and tissue composition of the mussel Mytilus edulis

Smaal¹,

Vonk²

1997

Mar. Ecol. Prog. Ser.

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“…Rodhouse et al (1984b) have also presented evidence for increased expenditures on growth and consequently lower RE in cultured Mytdus edulis.…”

Section: Discussionmentioning

confidence: 86%

Production and resource partitioning in the giant scallop Placopecten magellanicus grown on the bottom and in suspended culture

MacDonald¹

1986

Mar. Ecol. Prog. Ser.

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Growth rates of shell and somahc tlssue plus quantities of energy invested in the production of gametes, soma, and shell were determ~ned for cultured Placopecten mageUanjcus and compared to slmilar estimates for a natural population in Newfoundland. Cultivated scallops < ? yr old displayed faster shell growth, heavier somatic weights, greater annual reproductive output and total production than wild scallops of eqmvalent age but placed less emphasis on shell production and had lower turnover ratios (P/B). In response to enhanced conditions associated wlth suspended culture these scallops allocated more of their available energy to somatic growth and there were also indications that maximum slze and longevity were reduced. The potential consequences of less emphasis on reproduction, reduced maximum slze, and longevity include an overall reduchon in gamete producbon throughout the lifespan and an apparent decline in fltness.

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“…Predicted impacts of cultured mussels on the concentration of chlorophyll_a (a), zooplankton (b), DIN (c) and detritus (d) shown as the percentage change from the scenario without mussels and averaged over the simulation period, 14 July 2010 -29 June 2011. Krishnakumar et al (1994) h van Haren and Kooijman (1993) i Gnaiger and Forstner (1983) j Fasham et al (1990) k Guyondet et al (2010) l Platt and Irwin (1973) m Rodhouse et al (1984) T H -upper boundary of tolerance range …”

Section: Discussionmentioning

confidence: 99%

“…M fC and M fN constitute 92% and 88% of the total allocation of C and N, in the biomass, respectively (Rodhouse et al, 1984). An additional 8% of C, M shC , and 12% of N, M shN , are allocated in the shell organic fraction (Rodhouse et al, 1984). Finally, the ingested food that has not been egested in faeces or allocated in flesh or shell is respired as CO 2 in the case of C,…”

Section: Coupling Between Ecophysiological and Biogeochemical Modelmentioning

confidence: 99%

Numerical modelling of spatio-temporal variability of growth of Mytilus edulis (L.) and influence of its cultivation on ecosystem functioning

Dabrowski

Lyons

Cure³

et al. 2013

Journal of Sea Research

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Resource allocation in Mytilus edulis on the shore and in suspended culture

Cited by 70 publications

References 23 publications

Seasonal variation in C, N and P budgets and tissue composition of the mussel Mytilus edulis

Seasonal variation in C, N and P budgets and tissue composition of the mussel Mytilus edulis

Production and resource partitioning in the giant scallop Placopecten magellanicus grown on the bottom and in suspended culture

Numerical modelling of spatio-temporal variability of growth of Mytilus edulis (L.) and influence of its cultivation on ecosystem functioning

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