First evidence for a Vibrio strain pathogenic to Mytilus edulis altering hemocyte immune capacities

Cheikh, Yosra Ben; Travers, Marie-Agnès; Morga, Benjamín; Godfrin, Yoann; Foll, Frank Le

doi:10.1016/j.fsi.2016.03.140

Cited by 10 publications

(11 citation statements)

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“…It is well known that several of the groups isolated in this study may have a role in larval mortality in cultures. In fact, several bacterial included in the Splendidus clade are considered pathogenic for bivalve molluscs (oyster, clam, scallop, mussel) (Revised by Beaz-Hidalgo et al 2009; Revised by Kwan and Bolch 2015;Vanhove et al 2015;Cheikh et al 2016) and also cephalopod molluscs (Farto et al 2003;Iehata et al 2016). Similarly, V. alginolyticus was pathogenic for carpet shell clam larval and juvenile (Gómez-León et al 2005;Mechri et al 2015), fish (Liu et al 2004;Zheng et al 2017), crustacean (Jayaprakash et al 2006;Xu et al 2013), scallop (Riquelme et al 1996), red abalone (Anguiano-Beltrán et al 1998), associated with infected Chilean octopus eggs (Iehata et al 2016), with ability to cause skin lesions to young octopus (Hanlon and Forsythe 1990), and isolated from skin ulcers and/or different organs of cultured cuttlefish (Sangster and Smolowitz 2003).…”

Section: Pathogenicity Of Culturable Bacteriamentioning

confidence: 99%

Bacteria-Affecting Cephalopods

Farto

Fichi

Gestal

et al. 2019

Handbook of Pathogens and Diseases in Cephalopods

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Bacterial pathogens contribute to obtain an unsuccessful production of cephalopods. An updated overview of the knowledge of these pathogens must be a valuable tool to improve their aquarium maintenance and aquaculture. The present work provides a description of the main bacterial pathogens associated with larval stages of cultured Octopus vulgaris, and juvenile and adults of several cephalopods. Vibrio species, reported with ability to cause vibriosis in aquaculture, are the main bacteria associated with skin lesions in adults. Different species of Pseudomonas and Aeromonas, among others, have also been detected. Furthermore, gram-positive bacteria such as Bacillus have been also described. Among them, V. alginolyticus, V. carchariae, V. parahaemolyticus, V. splendidus and V. lentus have also been isolated from sterile organs or fluids of animals and their potential as invaders proved. However, only V. alginolyticus or V. lentus has the ability to cause lesions, and, in addition, the last one is proved as the causative agent of death in octopuses. Other organs such as eyes of squids are also colonized by Vibrio species or Micrococcus sp., and recently Photobacterium swingsii and Lactococcus garvieae have been reported associated with a retrobulbar lesion in octopus. Rickettsial-like organisms (RLO) are also detected in the gills of the octopus, having a detrimental effect on the respiratory gaseous exchange of the animals. Cultures of octopus paralarvae show a genetically diverse community comparable to those reported previously from other marine hatcheries. Bacteria included in the Splendidus clade is the dominant group in all conditions, except in one of them, where V. alginolyticus, V.

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Section: Pathogenicity Of Culturable Bacteriamentioning

confidence: 99%

Bacteria-Affecting Cephalopods

Farto

Fichi

Gestal

et al. 2019

Handbook of Pathogens and Diseases in Cephalopods

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“…Vibrios are among the major bacterial pathogens of marine organisms and have been identified as pathogens of several bivalve molluscs (Beaz-Hidalgo et al, 2010;Lemire et al, 2015;Eggermont et al, 2017). During mussel mortality events, different Vibrio splendidus strains were isolated from moribund mussels in France and were linked to mortality (Travers et al, 2015;Ben Cheikh et al, 2016). Of the sites studied, the Bay of Brest, located at the extremity of the Brittany Peninsula, is one of the locations where mussels suffered massive mortality in 2014 and beyond.…”

Section: Introductionmentioning

confidence: 99%

High mortality of mussels in northern Brittany – Evaluation of the involvement of pathogens, pathological conditions and pollutants

Charles

Bernard²,

Villalba

et al. 2020

Journal of Invertebrate Pathology

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A multi-parametric approach was adopted to identify mortality causes in mussels.  A 'mortality window' during the spring season was identified.  Brest, Lannion and St. Brieuc (France) have different cumulative mussel mortality rates.  Haemocytic infiltrations and Marteilia sp. are parameters linked to mortality.  There was no specific significant involvement of disseminated neoplasia or Vibrio.

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“…; Ben Cheikh et al . ). Most of these mass mortalities occur during the summer when seawater temperatures are higher than 18°C.…”

Section: Discussionmentioning

confidence: 97%

New insights into the haemo‐ and coelo‐microbiota with antimicrobial activities from Echinodermata and Mollusca

et al. 2019

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Aims: The aim of this study was to investigate the diversity of bacteria with antimicrobial activity present in the coelomic fluid and haemolymph of wild and healthy echinodermata and mollusca. Methods and Results: Collection expeditions of healthy marine molluscs and echinoderms were conducted in the Glenan archipelago in spring 2014. Members of the culturable microbiota present in the haemolymph, (haemomicrobiota) of Haliotis tuberculata (gastropoda, abalone) and Mytilus edulis (bivalvia, mussel), as well as in the coelomic fluid (coelo-microbiota) of Echinus esculentus (echinoidea, sea urchin) and Holothuria forskali (Holothuroidea, holothurian) were screened for antimicrobial activity, and further identified using 16S rRNA sequencing. Except for E. esculentus, culturable bacteria in the internal fluids of all studied organisms (mussel, abalone and holothurian) were more abundant than in seawater. The haemo-and coelo-microbiota with antimicrobial activity differed significantly between host species, in terms of abundance and diversity. Indeed, higher numbers were isolated from mussel than from abalone haemolymph. Moreover, in mussels and holothurians, bacteria with antimicrobial activities were predominantly Vibrio spp. (respectively 55 and 45%), while Pseudoalteromonas spp. were the most abundant (50%) in abalone haemolymph. Nevertheless, the activity spectra of these bacteria mainly included marine pathogens affiliated to the Vibrio genus. Conclusion: The haemo-and coelo-microbiota with antimicrobial activities were significantly related to their host species and differed in terms of abundance and diversity. These bacteria may play a key role in host homeostasis against pathogens. Significance and Impact of the Study: This study brings new knowledge on the diversity of bacteria present in the internal fluids of two marine molluscs and two echinoderms and their antimicrobial activities towards marine pathogens. Rosenberg and Rosenberg 2008). Despite still being a matter of discussion (Theis et al. 2016), advances in next generation DNA sequencing (NGS) and the development of metabolomics have shed light on the crucial role of the microbiota in host homeostasis (Heindl et al. 2010; Flemer et al. 2012).

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First evidence for a Vibrio strain pathogenic to Mytilus edulis altering hemocyte immune capacities

Cited by 10 publications

References 50 publications

Bacteria-Affecting Cephalopods

Bacteria-Affecting Cephalopods

High mortality of mussels in northern Brittany – Evaluation of the involvement of pathogens, pathological conditions and pollutants

New insights into the haemo‐ and coelo‐microbiota with antimicrobial activities from Echinodermata and Mollusca

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