Physiological responses and scope for growth of &lt;i&gt;Ruditapes decussatus&lt;/i&gt; from Ria Formosa, southern Portugal, exposed to increased ambient ammonia

Sobral, Paula; Fernandes, Sandra

doi:10.3989/scimar.2004.68n2219

Cited by 17 publications

(13 citation statements)

References 21 publications

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“…In this case, a high mortality of R . decussatus was registered especially in the intertidal mudflats, which could be related with high summer temperatures at low tide 46 , 47 , resulting in the accumulation of ammonia in the sediment surface due to the enhancement of mineralization. In fact, Falcão & Vale 48 found a sharp release rate of ammonium from sediment in the presence of R .…”

Section: Discussionmentioning

confidence: 96%

Functional traits of a native and an invasive clam of the genus Ruditapes occurring in sympatry in a coastal lagoon

Lopes

Rodrigues

Crespo

et al. 2018

Sci Rep

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The main objective of this study was to evaluate the functional traits regarding bioturbation activity and its influence in the nutrient cycling of the native clam species Ruditapes decussatus and the invasive species Ruditapes philippinarum in Ria de Aveiro lagoon. Presently, these species live in sympatry and the impact of the invasive species was evaluated under controlled microcosmos setting, through combined/manipulated ratios of both species, including monospecific scenarios and a control without bivalves. Bioturbation intensity was measured by maximum, median and mean mix depth of particle redistribution, as well as by Surface Boundary Roughness (SBR), using time-lapse fluorescent sediment profile imaging (f-SPI) analysis, through the use of luminophores. Water nutrient concentrations (NH4-N, NOx-N and PO4-P) were also evaluated. This study showed that there were no significant differences in the maximum, median and mean mix depth of particle redistribution, SBR and water nutrient concentrations between the different ratios of clam species tested. Significant differences were only recorded between the control treatment (no bivalves) and those with bivalves. Thus, according to the present work, in a scenario of potential replacement of the native species by the invasive species, no significant differences are anticipated in short- and long-term regarding the tested functional traits.

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Section: Discussionmentioning

confidence: 96%

Functional traits of a native and an invasive clam of the genus Ruditapes occurring in sympatry in a coastal lagoon

Lopes

Rodrigues

Crespo

et al. 2018

Sci Rep

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“…), environmental effects (Gonzalez et al . ; Sobral & Fernandes ; Helson & Gardner ; Sarà et al . ; Wang et al .…”

Section: Modelling Performance Measures Of Cultured Speciesmentioning

confidence: 99%

“…For many SFG applications, however, growth accuracy prediction may be unimportant, as SFG is often used as a relative performance measure to compare different dietary or environmental outcomes, rather than a metric that aims to predict actual growth. SFG measures have been very common in shellfish studies to investigate feeding physiology (Bayne et al 1978;MacDonald et al 1998;Stead et al 2003;Wong & Cheung 2003;Shin et al 2009;Arrieche et al 2011;Albentosa et al 2012a), environmental effects (Gonzalez et al 2002;Sobral & Fernandes 2004;Helson & Gardner 2007;Wang et al 2011;Albentosa et al 2012b;Guzman-Agueero et al 2013;Navarro et al 2013;Sanders et al 2014) and ecotoxicology (Widdows et al 2002;Halldorsson et al 2005;El-Shenawy et al 2006;Burt et al 2007;Mubiana & Blust 2007;Munari & Mistri 2007;Neuberger-Cywiak et al 2007). SFG has also been applied to other aquatic invertebrates such as crabs (Mcglaun & Withers 2012) and sea urchins (Stumpp et al 2011).…”

Section: Scope For Growth (Sfg)mentioning

confidence: 99%

Performance measures and models for open‐water integrated multi‐trophic aquaculture

Reid

Lefebvre

Filgueira

et al. 2018

Reviews in Aquaculture

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Qualifying and quantifying nutrient flows within open‐water Integrated Multi‐Trophic Aquaculture (IMTA) systems is necessary to determine transfer efficiencies and to assess overall system performance. There are numerous empirical performance metrics, such as spatially defined growth and nutrient sequestration, which may have application. When used in combination with modelling techniques, empirical approaches can be a powerful tool for system assessment or prediction. Simple empirical growth models, such as the thermal‐growth coefficient (TGC) and scope for growth (SFG), are applicable to aquatic animals and can include nutritional mass‐balance approaches to estimate nutrient loads. Comparable empirical growth models exist for seaweeds. Mechanistic‐based dynamic growth and reproduction models, such as Dynamic Energy Budget (DEB), are more complex, but have application beyond site‐specific empirical models and can, therefore, be included into larger ecosystem models for application to IMTA. Proximity, ecological transfer efficiencies, particle dynamics, species culture ratios and the timing of multi‐species production cycles can have profound implications for IMTA effectiveness and require careful consideration for system assessment. This review provides a pragmatic evaluation of performance measures and models to assess nutrient transfer and growth in open‐water IMTA systems.

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“…, 1994; Kligen et al. , 2001), but studies on Clams ( Ruditapes decussatus ) are rather limited in spite of its abundance (Sobral & Fernandes, 2004). The aim of this study was the evaluation of irradiation effect on microbiological quality, mortality rate, chemical and biochemical features of alive clams ( R. decussatus ) during chilled storage.…”

Section: Introductionmentioning

confidence: 99%

The potential use of irradiation to extend the shelf‐life of clams (Ruditapes decussatus) during live storage: effect on bacterial and biochemical profiles

Mbarki

Nahdi

Barkallah

et al. 2009

Int J of Food Sci Tech

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Changes in microbiological and biochemical quality of clams (Ruditapes decussatus) subjected to low doses of gamma irradiation (0.5 and 1 kGy) were investigated during alive storage, at 5°C. The mortality rate was significantly lower for irradiated clams compared with the control. In the same way, ammonia content was lower for irradiated clams (especially 1 kGy irradiated group). Considerable levels of total mesophiles, coliforms, staphylococcus, faecal streptococcus and Escherichia coli were detected in the control and irradiation had immediately reduced these charges; all bacteria studied experienced a 1-to 3-log reduction following 1 kGy irradiation. At the last day of storage, irradiated groups showed a noticeable reduction in the bacterial counts, whereas the mesophiles, staphylococcus and coliform germs were abundant in the control group (6.3, 2 and 1.7 log CFU g )1 , respectively). Irradiation doses up to 1 kGy had not an immediate effect on fatty acids composition (P > 0.05) and lipid profile was better in irradiated samples, where polyunsaturated fatty acid fraction was maintained throughout storage using irradiation. Also, sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed minor changes in proteins bands between different samples. These results demonstrated that 1 kGy irradiation appeared to be the optimum dose for treating alive clams (R. decussatus), through improving the microbial quality and alleviating biochemical changes during refrigerated storage.

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Physiological responses and scope for growth of <i>Ruditapes decussatus</i> from Ria Formosa, southern Portugal, exposed to increased ambient ammonia

Cited by 17 publications

References 21 publications

Functional traits of a native and an invasive clam of the genus Ruditapes occurring in sympatry in a coastal lagoon

Functional traits of a native and an invasive clam of the genus Ruditapes occurring in sympatry in a coastal lagoon

Performance measures and models for open‐water integrated multi‐trophic aquaculture

The potential use of irradiation to extend the shelf‐life of clams (Ruditapes decussatus) during live storage: effect on bacterial and biochemical profiles

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