Variability of shell repair in the Manila clam Ruditapes philippinarum affected by the Brown Ring Disease: A microstructural and biochemical study

Trinkler, Nolwenn; Guichard, Nathalie; Labonne, Maylis; Plasseraud, Laurent; Paillard, Christine; Marin, Frédéric

doi:10.1016/j.jip.2010.12.011

Cited by 13 publications

(5 citation statements)

References 32 publications

(29 reference statements)

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“…Homogeneous microstructures are extremely frequent in heterodont bivalves (18). Interestingly, in a recent paper (21) where we studied the shell repair process of the edible Manila clam Venerupis (Ruditapes) philipinarum after a bacterial infestation, we observed that homogeneous microstructures in the repair zone can gradually self-organize into crossed acicular microstructures, which belong to the previous 'crossed structures' type.…”

Section: Different Shell Microstructuresmentioning

confidence: 97%

The formation and mineralization of mollusk shell

2012

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In the last years, the field of mollusk biomineralization has known a tremendous mutation. The most recent advances deal with the nanostructure of shell biominerals, and with the identification of several shell matrix proteins: on one hand, the complex hierarchical organization of shell biominerals has been deciphered in few models, like nacre. On the other hand, although proteins represent a minor shell component, they are the major macromolecules that control biocrystal synthesis. Until recently, the paradigm was to consider that this control occurs by two antagonist mechanisms: crystal nucleation and growth inhibition. Emerging models try to translate a more complex reality, illustrated by the huge variety of shell proteins, characterized so far. The primary structure of many of them is composed of different functional domains, some of which exhibit enzymatic activity, while others may be involved in cell signalling. Many of them have unknown functions. Today, the shell matrix appears as a whole system, which regulates protein-mineral, protein-protein, and epithelium-mineral interactions. These aspects should be taken in account for the future models of shell formation.

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Section: Different Shell Microstructuresmentioning

confidence: 97%

The formation and mineralization of mollusk shell

2012

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“…Subsequently the bacterium colonizes the edge of the mantle and periostracum, which induces the host to synthetize brown melanized organic protein matrix, conchiolin, whose composition is different from the shell matrix (Trinkler et al, 2011). This deposit progressively extends to internal surfaces of the valves.…”

Section: Tapetismentioning

confidence: 99%

Bacterial diseases in marine bivalves

Travers

Miller

Roque

et al. 2015

Journal of Invertebrate Pathology

143

121

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Bivalve aquaculture is seriously affected by many bacterial pathogens that cause high losses in hatcheries as well as in natural beds. A number of Vibrio species, but also members of the genera Nocardia and Roseovarius, are considered important pathogens in aquaculture. The present work provides an updated overview of main diseases and implicated bacterial species affecting bivalves. This review focuses on aetiological agents, their diversity and virulence factors, the diagnostic methods available as well as information on the dynamics of the host-parasite relationship.

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“…Not only did ALP and CA participate in the formation of the shell, but CA also plays an important role in regulating the osmotic pressure and pH values (Yu et al 2006). In one case, the Manila clam-Venerupis philippinarum (A. Adams & Reeve, 1850)-can overcome an epizootic bacterial disease by mineralising a new repair shell layer (Trinkler et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Repair process and enzymatic activity associated with induction of shell regeneration in the invasive speciesPomacea canaliculata

Yang

Zhao

et al. 2016

Molluscan Research

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This study investigated the repair process and enzymatic activity responses after induction of shell regeneration in Pomacea canaliculata. The survival rates, height of regenerated shell, and activities of alkaline phosphatase (ALP) and carbonic anhydrase (CA) were investigated and recorded for 15 days. A triangular piece of shell about 8 mm wide was excised from the ventral region of the shell. On the basis of photographs and enzyme assay, it was concluded both yellow-shell apple snails and black-shell apple snails had high survival rates (100%). The regenerated new shell was initially thin, with the wound sealed 5 days after induction of shell regeneration; after that the regenerated shell thickened. Three snails were sampled at 0, 0.5, 1, 2, 3, 5, 10 and 15 days after shell excision for analysis of enzymatic activity of ALP and CA. Trends of the activity of ALP and CA in the mantle were similar. Initially they both showed a decline on the first day, then rose on following days. Activity of ALP declined to a minimum on the first day, and an activity peak in both colour forms appeared on the fifth day (P < 0.05) and was maintained for the rest of the experiment. The minimum value of CA occurred after 0.5 days, and a significant increase was also observed on the fifth day (P < 0.05). This study has revealed that apple snails have good shell regeneration abilities, and that ALP and CA probably play a crucial role in shell growth and regeneration. ARTICLE HISTORY

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Variability of shell repair in the Manila clam Ruditapes philippinarum affected by the Brown Ring Disease: A microstructural and biochemical study

Cited by 13 publications

References 32 publications

The formation and mineralization of mollusk shell

The formation and mineralization of mollusk shell

Bacterial diseases in marine bivalves

Repair process and enzymatic activity associated with induction of shell regeneration in the invasive speciesPomacea canaliculata

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