Response of two species of clams, Ruditapes decussatus and Venerupis pullastra, to starvation: Physiological and biochemical parameters

Albentosa, Marina; Fernández‐Reiriz, María José; Labarta, Uxío; Pérez-Camacho, A.

doi:10.1016/j.cbpb.2006.10.109

Cited by 72 publications

(59 citation statements)

References 28 publications

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“…This means that protein of these species is of good quality. This agree with Albentosa et al (2007), who reported that protein and total lipids contribute significantly to the total energy supply in V. senegaleinsis. On the other hand, our findings disagree with Okuzumi and Fujii (2000), who said that lipids are highly efficient as sources of energy and they contain more than twice the energy of carbohydrates and proteins.…”

Section: Total Calorific Valuesupporting

confidence: 82%

Proximate Evaluation of some Economical Seafood as a Human Diet and as an Alternative Prospective Valuable of Fish Meal

Mohammad¹,

Yusuf²

2015

J. of Fisheries and Aquatic Science

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Biochemical studies are much more important from the nutritional point of view. This study was conducted to evaluate the difference in nutritional qualities of the commercial seafood (15.10, 14.50, 26.72 and 14.87%) contents of them on dry basis were observed, respectively. Protein was the major organic component of investigated species, followed by carbohydrate. The results elucidated that V. aurea, C. florida and T. carinifera are good sources of protein and carbohydrate, C. glaucum and T. carinifera of minerals and all of them have low fat content. Carbohydrate, lipid and ash content of C. glaucum was found to be significantly (p<0.05) lower than the other species. The present study provides not only the information about the proximate composition but also recommended the consumption of these 3 shellfishes species (V. aurea, C. florida and T. carinifera) as good quality seafood products and more suitable for marketing and consumption. In addition, the whole mount, when available with low price, may be used to push meat type producing animals especially poultry and fishes.

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Section: Total Calorific Valuesupporting

confidence: 82%

Proximate Evaluation of some Economical Seafood as a Human Diet and as an Alternative Prospective Valuable of Fish Meal

Mohammad¹,

Yusuf²

2015

J. of Fisheries and Aquatic Science

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“…In unfed larvae, in contrast, a decrease in proteins and total lipids was detected, while carbohydrates remained almost constant. These results suggest that total lipids and proteins are the major energy sources during larval development of R. decussatus, unlike the situation in adults where glycogen represents the principal energy reserves (Albentosa et al 2006). This is also evident in the unfed larvae, in which the catabolism of proteins and total lipids contributed most to the larval metabolism, especially after day 5.…”

Section: Discussionmentioning

confidence: 75%

Biochemical compounds’ dynamics during larval development of the carpet-shell clam Ruditapes decussatus (Linnaeus, 1758): effects of mono-specific diets and starvation

et al. 2010

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Successful larval growth and development of bivalves depend on energy derived from internal (endotrophic phase) and external (exotrophic phase) sources. The present paper studies survival, growth and biochemical changes in the early developmental stages (from egg to pediveliger) of the clam Ruditapes decussatus in order to characterize the nutritional requirements and the transition from the endotrophic to the exotrophic phase. Three different feeding regimes were applied: starvation and two mono-specific microalgal diets (Isochrysis aff galbana and Chaetoceros calcitrans). A comparison between fed and unfed larvae highlighted the importance of egg lipid reserves, especially neutral lipids, during a brief endotrophic phase of embryonic development (first 2 days after fertilization). Egg reserves, however, may energetically contribute to the maintenance of larvae beyond the embryonic development. In fed larvae, the endotrophic phase is followed by a mixotrophic phase extending to days 5-8 after fertilization and a subsequent exotrophic phase. Metamorphosis starts around day 20. The intense embryonic activities are supported by energy derived from lipids, mainly from neutral lipids, and the metamorphic activities are supported by energy derived essentially from proteins accumulated during the planktonic phase and depend on the nutritional value of diets. The diet of I. aff galbana proves to be more adequate to R. decussatus larval rearing. The results provide useful information for the successful production of R. decussatus aquaculture.

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“…Our study showed that exposure of C. virginica juveniles to low salinity and/or elevated P CO2 levels strongly affects their lipid and glycogen stores but does not affect the whole-body protein levels. This may reflect the fact that protein reserves in bivalves are typically used up only during extreme energy deficiency such as starvation (Baghdiguian and Riva, 1985;Albentosa et al, 2007). Hypercapnic exposure at a salinity of 30 led to a partial depletion of lipid and glycogen reserves in oyster juveniles (by 56 and 31%, respectively), indicating a mismatch between energy demand and supply.…”

Section: Effects Of P Co2 and Salinity On Energy Homeostasis Of Juvenmentioning

confidence: 99%

Interactive effects of salinity and elevated CO2 levels on juvenile eastern oysters,Crassostrea virginica

Dickinson

Ivanina

Matoo

et al. 2012

Journal of Experimental Biology

227

145

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SUMMARYRising levels of atmospheric CO 2 lead to acidification of the ocean and alter seawater carbonate chemistry, which can negatively impact calcifying organisms, including mollusks. In estuaries, exposure to elevated CO 2 levels often co-occurs with other stressors, such as reduced salinity, which enhances the acidification trend, affects ion and acid-base regulation of estuarine calcifiers and modifies their response to ocean acidification. We studied the interactive effects of salinity and partial pressure of CO 2 (P CO2 ) on biomineralization and energy homeostasis in juveniles of the eastern oyster, Crassostrea virginica, a common estuarine bivalve. Juveniles were exposed for 11weeks to one of two environmentally relevant salinities (30 or 15PSU) either at current atmospheric P CO2 (~400atm, normocapnia) or P CO2 projected by moderate IPCC scenarios for the year 2100 (~700-800atm, hypercapnia). Exposure of the juvenile oysters to elevated P CO2 and/or low salinity led to a significant increase in mortality, reduction of tissue energy stores (glycogen and lipid) and negative soft tissue growth, indicating energy deficiency. Interestingly, tissue ATP levels were not affected by exposure to changing salinity and P CO2, suggesting that juvenile oysters maintain their cellular energy status at the expense of lipid and glycogen stores. At the same time, no compensatory upregulation of carbonic anhydrase activity was found under the conditions of low salinity and high P CO2 . Metabolic profiling using magnetic resonance spectroscopy revealed altered metabolite status following low salinity exposure; specifically, acetate levels were lower in hypercapnic than in normocapnic individuals at low salinity. Combined exposure to hypercapnia and low salinity negatively affected mechanical properties of shells of the juveniles, resulting in reduced hardness and fracture resistance. Thus, our data suggest that the combined effects of elevated P CO2 and fluctuating salinity may jeopardize the survival of eastern oysters because of weakening of their shells and increased energy consumption.

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Response of two species of clams, Ruditapes decussatus and Venerupis pullastra, to starvation: Physiological and biochemical parameters

Cited by 72 publications

References 28 publications

Proximate Evaluation of some Economical Seafood as a Human Diet and as an Alternative Prospective Valuable of Fish Meal

Proximate Evaluation of some Economical Seafood as a Human Diet and as an Alternative Prospective Valuable of Fish Meal

Biochemical compounds’ dynamics during larval development of the carpet-shell clam Ruditapes decussatus (Linnaeus, 1758): effects of mono-specific diets and starvation

Interactive effects of salinity and elevated CO2 levels on juvenile eastern oysters,Crassostrea virginica

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