Physiological energetics of Mytilus edulis: Scope for Growth

Widdows, J.; Johnson, Daniel L.

doi:10.3354/meps046113

Cited by 328 publications

(184 citation statements)

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“…Methods such as scope for growth (SFG) have long been used to indicate anthropogenic stress in marine and estuarine areas (e.g., Widdows and Johnson, 1988). However, Navarro (1988) and Guerin and Stickle (1992) both indicate the way in which salinity stress, through natural freshwater inputs, reduces energetic budgets.…”

Section: Recovery 14)mentioning

confidence: 99%

Classifying Ecological Quality and Integrity of Estuaries

Borja¹,

Basset²,

Bricker³

et al. 2011

Treatise on Estuarine and Coastal Science

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There is an increasing need in assessing ecological quality and integrity of estuaries and lagoons. This chapter shows the most recent efforts in assessing individual biological elements (from phytoplankton to fishes), together with the integrative tools developed in different geographical areas worldwide. However, reducing complex information from multiple ecosystem elements to a single color or value is a substantial challenge to marine scientists, and requires the integration of different disciplines (chemists, engineers, biologists, ecologists, physics, managers, etc.), to reach agreement on the final assignment of ecological status. Hence, in the near future, emphasis needs to be directed at understanding the complexities of estuarine system functioning rather than simplifying and scaling down the system into smaller components. Provided for non-commercial research and educational use.Not for reproduction, distribution or commercial use.This chapter was originally published in Treatise on Estuarine and Coastal Science, published by Elsevier, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for noncommercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who you know, and providing a copy to your institution's administrator.All other uses, reproduction and distribution, including without limitation commercial reprints, selling or licensing copies or access, or posting on open internet sites, your personal or institution's website or repository, are prohibited.For exceptions, permission may be sought for such use through Elsevier's permissions site at: Author's personal copy AbstractThere is an increasing need in assessing ecological quality and integrity of estuaries and lagoons. This chapter shows the most recent efforts in assessing individual biological elements (from phytoplankton to fishes), together with the integrative tools developed in different geographical areas worldwide. However, reducing complex information from multiple ecosystem elements to a single color or value is a substantial challenge to marine scientists, and requires the integration of different disciplines (chemists, engineers, biologists, ecologists, physics, managers, etc.), to reach agreement on the final assignment of ecological status. Hence, in the near future, emphasis needs to be directed at understanding the complexities of estuarine system functioning rather than simplifying and scaling down the system into smaller components.

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Section: Recovery 14)mentioning

confidence: 99%

Classifying Ecological Quality and Integrity of Estuaries

Borja¹,

Basset²,

Bricker³

et al. 2011

Treatise on Estuarine and Coastal Science

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“…The amount of ingested or consumed energy (C) was calculated for each individual by multiplying FR by the amount of particle organic material (POM) per liter in input water samples and assuming an energy content of algal material of water samples and assuming an energy content of algal material of 23 J·mg -1 [10].…”

Section: Filtration Rate Measurementmentioning

confidence: 99%

“…Ammonium ion concentration was plotted against time of measurement and excretion rate was calculated from the slope of the decrease of ammonium ion concentration over time (ammonium ion concentration was measured every 30 minutes). The amount of energy used in excretion (U) was calculated for each individual by multiplying ER by assuming an energy content ammonium ion of 19.4 J·mg -1 NH 4 + [10].…”

Section: F Excretion Ratementioning

confidence: 99%

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A Comparison of the Mussel Anodonta woodiana’s Acute Physiological Responses to Different Algae Diets

Liu¹,

Hao²,

Iseri³

et al. 2014

JOCET

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Abstract-The bivalve Anodonta woodiana is widely distributed throughout Chinese freshwaters and is an important economic pearl mollusk. Recently, A. woodiana as a biomanipulation tool in Chinese lakes due to its strong suppression of phytoplankton, has been attracted increasingly more attention. In order to examine whether A. woodiana can exert grazing pressure on Microcystis and to evaluate the different effects of each algae diet on mussels' potential growth, a comparative study was carried out on the acute physiological responses to variable microalgae diets including toxic microcystin-producing cyanobacteria Microcystis aeruginosa and non-toxic green algae Scenedesmus obliquus. The values of filtration rate, absorption efficiency, oxygen consumption rate and ammonia excretion rate of A. woodiana were measured and finally the scope for growth (SFG) value as a measure of metabolic energy balance for A. woodiana was calculated and compared. The results showed that the mussel A. woodiana has a higher grazing ability on the toxic M. aeruginosa compared with the green algae S. obliquus; furthermore, the effects of different algae diets on SFG of A. woodiana demonstrated that the toxic M. aeruginosa may supply more energy for A. woodiana's potential growth. These results indicated that A. woodiana has strong adaptation ability when they were exposed to toxic Microcystis solution in this study, which implied that there is high application feasibility of A. woodiana as a toxic Microcystis-blooming controller in practice.Index Terms-Anodonta woodiana, microcystis aeruginosa, scenedesmus obliquus, scope for growth (SFG). I. INTRODUCTIONLake Taihu is the third largest freshwater lake in China and situated in the Yangtze delta. Since 1980's, however, the development of industry and agriculture in the lake region, as well as a rapid increase in the population has resulted in pollutants being produced and discharged into rivers and the lake. With the deterioration of inflow water quality, eutrophication and cyanobacterial blooms have occurred. Recently, cyanobacterial blooms have extended its coverage and persisted throughout the summer, which affected the function of the lake as a drinking water supply [1].

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“…Other physiological changes in mussels exposed to chemical contaminants have been observed, including reductions in growth rate (scope-for-growth), altered condition indices (Cappuzzo and Leavitt 1988;Widdows and Johnson 1988;Widdows et al 1990), and impaired growth and reproductive success proportional to the exposure level of chemical contaminants (Salazar and Salazar 1991).…”

mentioning

confidence: 99%

Assessment of Seasonal Variability of Cytochemical Responses to Contaminant Exposure in the Blue Mussel Mytilus edulis (Complex)

Kagley

Snider

Krishnakumar

et al. 2003

Archives of Environmental Contamination and Toxicology

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Abstract.A selected suite of cytochemical parameters in Mytilus edulis are altered in response to field and laboratory exposure to chemical contaminants. These biomarkers include lysosomal stability, nicotinamide adenine dinucleotide phosphate (NADPH)-ferrihemoprotein reductase activity, liposfuscin deposition, and accumulation of lysosomal and cytoplasmic unsaturated neutral lipid. Normal variations in physiological processes (influenced by exogenous seasonal changes in temperature, salinity, food availability, etc.) may alter the sensitivity of these biomarkers to contaminant exposure. To address this issue, M. edulis (complex) were sampled monthly from a reference nonurban site (Coupeville, Penn Cove) and a polluted urban site (Seacrest, Elliott Bay) in Puget Sound, WA, for a period of 15 months. Physiological measurements including total length, total weight, somatic and mantle weights (an indication of gonadal development and reproductive status), condition index, and the presence or absence of hemic neoplasia (HN, or leukemia) were recorded. Significant differences in lysosomal stability, lysosomal and cytoplasmic unsaturated neutral lipids, lipofuscin deposition, and NADPH-ferrihemoprotein reductase activity in cells of the digestive gland or digestive tubules were generally found in mussels taken throughout the year from Seacrest compared to mussels sampled from Coupeville, consistent with exposure to chemical contaminants. No seasonally influenced suppression of the entire suite of parameters as measures of contaminant exposure was evident. Therefore these biomarkers can be used to evaluate contaminant exposure in mussels throughout the entire year.

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Physiological energetics of Mytilus edulis: Scope for Growth

Cited by 328 publications

References 19 publications

Classifying Ecological Quality and Integrity of Estuaries

Classifying Ecological Quality and Integrity of Estuaries

A Comparison of the Mussel Anodonta woodiana’s Acute Physiological Responses to Different Algae Diets

Assessment of Seasonal Variability of Cytochemical Responses to Contaminant Exposure in the Blue Mussel Mytilus edulis (Complex)

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