Haplosporidium pinnae sp. nov., a haplosporidan parasite associated with mass mortalities of the fan mussel, Pinna nobilis, in the Western Mediterranean Sea

Catanese, Gaetano; Grau, Amàlia; Valencia, José María; García‐March, José Rafael; Vázquez‐Luis, Maite; Álvarez, Elvira; Deudero, Salud; Darriba, Susana; Carballal, Marı́a J.; Villalba, António

doi:10.1016/j.jip.2018.07.006

Cited by 121 publications

(181 citation statements)

References 54 publications

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“…In brackish environments the causative agent of MSX disease Haplosporidium nelsoni has contributed to major mortalities in the eastern oyster populations (Crassostrea virginica) along the coast of the United States (Burreson and Ford, 2004). The new haplosporidian species, H. pinnae is reported associated to mass mortality events of P. nobilis in Balearic Islands (Catanese et al, 2018), Greece (Lesvos Island) (Katsanevakis et al, 2019) also reported in Italy (Panarese et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…In order to define the presence of Mycobacterium sp. and the possible co-existence of Haplosporidium pinnae in the same individual, in all the animals belonging to the different locations DNA was amplified by PCR using the 16S rRNA for Mycobacterium (Böddinghaus et al, 1990), and for and the small subunit ribosomal DNA (SSU rDNA) for H. pinnae (Catanese et al, 2018; Table 1). Moreover, in Catalunya samples, specific primers for V. mediterranei were also used (Andree et al, under review).…”

Section: Dna Isolation and Pcr Diagnosis Of Common P Nobilis Pathogensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Since 2016, numerous mortality events of P. nobilis have been reported in the Mediterranean Sea reaching up to 100% of the population in many areas like Italy, Greece and Spain (Catanese et al, 2018;Carella et al, 2019;Katsanevakis et al, 2019). At first, an Haplosporidian parasite, named Haplosporidium pinnae, was designated as the solely responsible for the mortality (Catanese et al, 2018). After that, a mycobacterial infection has been also associated to the disease outcome (Carella et al, 2019), while Vibrio mediterranei appears to cause major mortality among stabled individuals in Spain, possibly associated to animal stress in captivity (Prado et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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In the Wake of the Ongoing Mass Mortality Events: Co-occurrence of Mycobacterium, Haplosporidium and Other Pathogens in Pinna nobilis Collected in Italy and Spain (Mediterranean Sea)

et al. 2020

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Following the Mass Mortality Events (MMEs) of the pen shell P. nobilis in Campania region and Sicily, a survey of moribund P. nobilis specimens was also conducted in other Italian regions (Campania, Tuscany, Sardinia, and Apulia) and Spain (Catalunya). Histopathological and molecular examination of 27 specimens of P. nobils revealed different types of pathogens associated with tissue lesions, morbidity and mortality. Presence of Mycobacterium, Vibrio species, Haplosporidium pinnae and Perkinsus sp. were detected, differently distributed into the areas. The Mycobacterium sp., previously reported in Campania and Sicily samples, was observed in all the analyzed areas and individuals, associated to systemic inflammatory lesions. In Spain, H. pinnae was observed in 36% of cases, always associated to the Mycobacterium sp. Molecular study using hsp65 genes and Internal Transcriber Spacer ITS support that a new species of Mycobacteria is infecting P. nobilis, close to M. triplex and belonging to the group of M. simiae complex with M. sherrisi. Presence of Perkinsus spp. resembling P. mediterraneus was observed in 2 out of 13 Italian individuals whose presence should be addressed as potential risk for shellfish aquaculture of the area. Vibrio spp. were also detected in some case. The preliminary results of this study suggest that Mycobacterium sp., Vibrio spp., H. pinnae and Perkinsus sp. cooperate to disease pathogenesis, being Mycobacterium and Haplosporidium most of the time involved. Vigilant inspection of those areas where MME is now starting, along with continuous systematic surveys, are crucial to define the spatiotemporal progress of mortality and the role of every single pathogen in the disease outcome.

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Section: Discussionmentioning

confidence: 99%

Section: Dna Isolation and Pcr Diagnosis Of Common P Nobilis Pathogensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In the Wake of the Ongoing Mass Mortality Events: Co-occurrence of Mycobacterium, Haplosporidium and Other Pathogens in Pinna nobilis Collected in Italy and Spain (Mediterranean Sea)

et al. 2020

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“…Despite protection, in the last decades its populations have been declining (Basso et al, 2015), due to direct threats such as trawling and anchoring , illegal collection by divers for food, decorative purposes, and for its byssus (Zavodnik et al, 1991;Katsanevakis, 2007a), and indirect threats such as habitat loss or degradation. Since autumn 2016, a mass mortality event, caused by the parasite Haplosporidium pinnae (Catanese et al, 2018) has caused, so far, an estimated loss of ~90% of the Spanish P. nobilis populations (Vázquez-Luis et al, 2017) and has raised concerns about the status of the species in the entire Mediterranean basin.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

et al. 2018

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An important population of the endemic Mediterranean fan mussel Pinna nobilis thrives in the marine protected area of Gera Gulf (Lesvos island, north-eastern Aegean Sea, Greece), and was assessed for the first time. To estimate the abundance, spatial distribution and habitat use of fan mussels in Gera Gulf, a distance sampling underwater survey was conducted. Detectability was modelled to secure unbiased estimates of population density. Two approaches were applied to analyze survey data, a design-based and a model-based approach using generalized additive models. The first approach was based on stratified random sampling on two strata, an assumed 'preferable' zone close to the coastline and an assumed unsuitable habitat, with predominantly muddy sediments, in which low sampling effort was applied. For the needs of the model-based approach, a dedicated cruise was conducted to collect bathymetric data with a single-beam echo-sounder and map the bathymetry of the study area. A very high-resolution image from the Worldview-3 satellite was processed, based on an object-based image analysis, for mapping all main habitat types in the study area. The estimated abundance using the design-based approach was low-biased as the stratum of pre-assumed unsuitable habitat proved to include patches of suitable habitats with high population densities that were missed by sampling. The model-based approach provided an abundance estimate of 213300 individuals (95% confidence interval between 97600-466000 individuals), which renders the fan mussel population of Gera Gulf the largest recorded population in Greece. Population density peaked between 1.5-8 m depth and became practically zero at depths >15 m. A bathymetric segregation of fan mussel size classes was noted, with the density of small individuals peaking in shallow waters, while that of large individuals peaked deeper. The highest population densities were observed in Posidonia oceanica meadows, followed by mixed bottoms (with reefs, rocks and sandy patches), while densities were very low on sandy and zero on muddy sediments. The current assessment provides a baseline for future monitoring of the fan mussel population in Gera Gulf. In view of the current (2017-2018) ongoing mass mortality of the species in the western Mediterranean, continuous monitoring of the main fan mussel populations, such as the one in Gera Gulf, is of utmost importance.

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Human impacts on the endangered fan mussel,Pinna nobilis

Öndes

Kaiser

Güçlüsoy

2019

Aquatic Conservation

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Pinna nobilis is a sensitive and vulnerable species and is hence considered a good indicator of anthropogenic pressures on marine ecosystems. This study provides novel data on the density and distribution of endangered P. nobilis on the Turkish coasts. Threats to the status of P. nobilis, including by‐catch and illegal collection, were assessed, as was the general awareness of people about the endangered status of fan mussels. The data sources consisted of direct observations from diving surveys and the local ecological knowledge (LEK) of fishers and scuba‐divers. Results demonstrated that the density of P. nobilis significantly changed with environmental parameters, such as depth, and among different sampling areas. The number of damaged individuals was lowest in the areas that were distant from human influences such as ports and tourist beaches. The density estimations of P. nobilis across a wide geographic area around the Turkish coasts revealed that the density of fan mussels was highest around western coasts in comparison with southern coasts. Fishers and divers indicated that the population of this species has decreased during the last decade. The main causes of this decline were suggested to be the impacts of fishing gear, poaching, pollution, and boat anchoring. The highest volume of by‐catch was estimated to be taken by trawls. In general, the knowledge and local awareness of the conservation importance and status of fan mussels was poor. The study has identified those areas where fan mussels occur at a high density, and hence may indicate areas for possible conservation protection status. Second, areas exposed to the illegal harvesting of fan mussels were highlighted. Societal concern would benefit from educational activities to raise awareness of the ecological importance and conservation needs for fan mussels in Turkey.

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Haplosporidium pinnae sp. nov., a haplosporidan parasite associated with mass mortalities of the fan mussel, Pinna nobilis, in the Western Mediterranean Sea

Cited by 121 publications

References 54 publications

In the Wake of the Ongoing Mass Mortality Events: Co-occurrence of Mycobacterium, Haplosporidium and Other Pathogens in Pinna nobilis Collected in Italy and Spain (Mediterranean Sea)

In the Wake of the Ongoing Mass Mortality Events: Co-occurrence of Mycobacterium, Haplosporidium and Other Pathogens in Pinna nobilis Collected in Italy and Spain (Mediterranean Sea)

Spatial distribution, abundance and habitat use of the endemic Mediterranean fan mussel Pinna nobilis in Gera Gulf, Lesvos (Greece): comparison of design-based and model-based approaches

Human impacts on the endangered fan mussel,Pinna nobilis

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