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Article ; Online: Infection of Norway lobster (Nephrops norvegicus) by the parasite Hematodinium sp.

Irene Molto-Martin / Douglas M. Neil / Christopher J. Coates / Simon A. MacKenzie / David Bass / Grant D. Stentiford / Amaya Albalat

Royal Society Open Science, Vol 11, Iss

insights from 30 years of field observations

2024 Volume 1

Abstract: The Norway lobster, Nephrops norvegicus, is an important representative of the benthos and also supports valuable fisheries across Europe. Nephrops are susceptible to infection by Hematodinium sp., an endoparasitic dinoflagellate that causes morbidity ... ...

Abstract	The Norway lobster, Nephrops norvegicus, is an important representative of the benthos and also supports valuable fisheries across Europe. Nephrops are susceptible to infection by Hematodinium sp., an endoparasitic dinoflagellate that causes morbidity and mortality. From an epizootiological perspective, the Clyde Sea Area (CSA; west of Scotland) is the best-studied Hematodinium–Nephrops pathosystem, with historical data available between 1988 and 2008. We have revisited this pathosystem by curating and updating prevalence values, differentiating host traits associated with disease exposure and progression, and comparing Hematodinium sp. disease dynamics in the CSA to other locations and to other decapod hosts (Cancer pagurus, Carcinus maenas). Prevalence from a 2018/2019 survey (involving 1739 lobsters) revealed Hematodinium sp. still mounts a synchronized patent infection in the CSA; hence this pathogen can be considered as enzootic in this location. We highlight for the first time that Nephrops size is associated with high severity infection, while females are more exposed to Hematodinium sp. More generally, regardless of the host (Norway lobster, brown and shore crabs) or the geographical area (Ireland, Wales, Scotland), Hematodinium sp. patent infections peak in spring/summer and reach their nadir during autumn. We contend that Hematodinium must be considered one of the most important pathogens of decapod crustaceans in temperate waters.
Keywords	marine parasite ; dinoflagellate ; fisheries ; decapod crustaceans ; disease connectivity ; long-term datasets ; Science ; Q
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	The Royal Society
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Ultimate opportunists-The emergent Enterocytozoon group Microsporidia.

Grant D Stentiford / David Bass / Bryony A P Williams

PLoS Pathogens, Vol 15, Iss 5, p e

2019 Volume 1007668

Keywords	Immunologic diseases. Allergy ; RC581-607 ; Biology (General) ; QH301-705.5
Language	English
Publishing date	2019-05-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A novel nudivirus infecting the invasive demon shrimp Dikerogammarus haemobaphes (Amphipoda)

Thomas W. Allain / Grant D. Stentiford / David Bass / Donald C. Behringer / Jamie Bojko

Scientific Reports, Vol 10, Iss 1, Pp 1-

2020 Volume 13

Abstract: Abstract The Nudiviridae are a family of large double-stranded DNA viruses that infects the cells of the gut in invertebrates, including insects and crustaceans. The phylogenetic range of the family has recently been enhanced via the description of ... ...

Abstract	Abstract The Nudiviridae are a family of large double-stranded DNA viruses that infects the cells of the gut in invertebrates, including insects and crustaceans. The phylogenetic range of the family has recently been enhanced via the description of viruses infecting penaeid shrimp, crangonid shrimp, homarid lobsters and portunid crabs. Here we extend this by presenting the genome of another nudivirus infecting the amphipod Dikerogammarus haemobaphes. The virus, which infects cells of the host hepatopancreas, has a circular genome of 119,754 bp in length, and encodes a predicted 106 open reading frames. This novel virus encodes all the conserved nudiviral genes (sharing 57 gene homologues with other crustacean-infecting nudiviruses) but appears to lack the p6.9 gene. Phylogenetic analysis revealed that this virus branches before the other crustacean-infecting nudiviruses and shares low levels of gene/protein similarity to the Gammanudivirus genus. Comparison of gene synteny from known crustacean-infecting nudiviruses reveals conservation between Homarus gammarus nudivirus and Penaeus monodon nudivirus; however, three genomic rearrangements in this novel amphipod virus appear to break the gene synteny between this and the ones infecting lobsters and penaeid shrimp. We explore the evolutionary history and systematics of this novel virus, suggesting that it be included in the novel Epsilonnudivirus genus (Nudiviridae).
Keywords	Medicine ; R ; Science ; Q
Subject code	570
Language	English
Publishing date	2020-09-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Genomic and developmental characterisation of a novel bunyavirus infecting the crustacean Carcinus maenas

Jamie Bojko / Kuttichantran Subramaniam / Thomas B. Waltzek / Grant D. Stentiford / Donald C. Behringer

Scientific Reports, Vol 9, Iss 1, Pp 1-

2019 Volume 10

Abstract: Abstract Carcinus maenas is in the top 100 globally invasive species and harbours a wide diversity of pathogens, including viruses. We provide a detailed description for a novel bunyavirus (Carcinus maenas Portunibunyavirus 1) infecting C. maenas from ... ...

Abstract	Abstract Carcinus maenas is in the top 100 globally invasive species and harbours a wide diversity of pathogens, including viruses. We provide a detailed description for a novel bunyavirus (Carcinus maenas Portunibunyavirus 1) infecting C. maenas from its native range in the Faroe Islands. The virus genome is tripartite, including large (L) (6766 bp), medium (M) (3244 bp) and small (S) (1608 bp) negative sense, single-stranded RNA segments. Individual genomic segments are flanked by 4 bp regions of similarity (CCUG). The segments encode an RNA-dependent RNA-polymerase, glycoprotein, non-structural protein with a Zinc-Finger domain and a nucleoprotein. Most show highest identity to the ‘Wenling Crustacean Virus 9’ from an unidentified crustacean host. Phylogenomics of crustacean-infecting bunyaviruses place them across multiple bunyavirus families. We discuss the diversity of crustacean bunyaviruses and provide an overview of how these viruses may affect the health and survival of crustacean hosts, including those inhabiting niches outside of their native range.
Keywords	Medicine ; R ; Science ; Q
Language	English
Publishing date	2019-09-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A new Progressive Management Pathway for improving seaweed biosecurity

Elizabeth J. Cottier-Cook / Jennefe P. Cabarubias / Janina Brakel / Juliet Brodie / Alejandro H. Buschmann / Iona Campbell / Alan T. Critchley / Chad L. Hewitt / Jie Huang / Anicia Q. Hurtado / Cicilia S. B. Kambey / Phaik Eem Lim / Tao Liu / Jonalyn P. Mateo / Flower E. Msuya / Zizhong Qi / Louise Shaxson / Grant D. Stentiford / Melba G. Bondad-Reantaso

Nature Communications, Vol 13, Iss 1, Pp 1-

2022 Volume 6

Abstract: The rapid expansion and globalization of the seaweed production industry, combined with rising seawater temperatures and coastal eutrophication, has led to an increase in infectious diseases and pest outbreaks. Here, we propose a novel Progressive ... ...

Abstract	The rapid expansion and globalization of the seaweed production industry, combined with rising seawater temperatures and coastal eutrophication, has led to an increase in infectious diseases and pest outbreaks. Here, we propose a novel Progressive Management Pathway for improving Seaweed Biosecurity.
Keywords	Science ; Q
Language	English
Publishing date	2022-12-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: New Paradigms to Help Solve the Global Aquaculture Disease Crisis.

Grant D Stentiford / Kallaya Sritunyalucksana / Timothy W Flegel / Bryony A P Williams / Boonsirm Withyachumnarnkul / Orn Itsathitphaisarn / David Bass

PLoS Pathogens, Vol 13, Iss 2, p e

2017 Volume 1006160

Keywords	Immunologic diseases. Allergy ; RC581-607 ; Biology (General) ; QH301-705.5
Language	English
Publishing date	2017-02-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Parasites, pathogens and commensals in the “low-impact” non-native amphipod host Gammarus roeselii

Bojko, Jamie / Karolina Bącela-Spychalska / Paul D. Stebbing / Alison M. Dunn / Michał Grabowski / Michał Rachalewski / Grant D. Stentiford

Parasites & vectors. 2017 Dec., v. 10, no. 1

2017

Abstract: BACKGROUND: Whilst vastly understudied, pathogens of non-native species (NNS) are increasingly recognised as important threats to native wildlife. This study builds upon recent recommendations for improved screening for pathogens in NNS by focusing on ... ...

Abstract	BACKGROUND: Whilst vastly understudied, pathogens of non-native species (NNS) are increasingly recognised as important threats to native wildlife. This study builds upon recent recommendations for improved screening for pathogens in NNS by focusing on populations of Gammarus roeselii in Chojna, north-western Poland. At this location, and in other parts of continental Europe, G. roeselii is considered a well-established and relatively ‘low-impact’ invader, with little understanding about its underlying pathogen profile and even less on potential spill-over of these pathogens to native species. RESULTS: Using a combination of histological, ultrastructural and phylogenetic approaches, we define a pathogen profile for non-native populations of G. roeselii in Poland. This profile comprised acanthocephalans (Polymorphus minutus Goese, 1782 and Pomphorhynchus sp.), digenean trematodes, commensal rotifers, commensal and parasitic ciliated protists, gregarines, microsporidia, a putative rickettsia-like organism, filamentous bacteria and two viral pathogens, the majority of which are previously unknown to science. To demonstrate potential for such pathogenic risks to be characterised from a taxonomic perspective, one of the pathogens, a novel microsporidian, is described based upon its pathology, developmental cycle and SSU rRNA gene phylogeny. The novel microsporidian Cucumispora roeselii n. sp. displayed closest morphological and phylogenetic similarity to two previously described taxa, Cucumispora dikerogammari (Ovcharenko & Kurandina, 1987), and Cucumispora ornata Bojko, Dunn, Stebbing, Ross, Kerr & Stentiford, 2015. CONCLUSIONS: In addition to our discovery extending the host range for the genus Cucumispora Ovcharenko, Bacela, Wilkinson, Ironside, Rigaud & Wattier, 2010 outside of the amphipod host genus Dikerogammarus Stebbing, we reveal significant potential for the co-transfer of (previously unknown) pathogens alongside this host when invading novel locations. This study highlights the importance of pre-invasion screening of low-impact NNS and, provides a means to document and potentially mitigate the additional risks posed by previously unknown pathogens.
Keywords	Acanthocephala ; Digenea (Trematoda) ; Dikerogammarus ; Gammarus roeselii ; Microsporidia ; Rotifera ; bacteria ; genes ; gregarines ; histology ; host range ; introduced species ; pathogens ; phylogeny ; protists ; ribosomal RNA ; risk ; screening ; wildlife ; Poland
Language	English
Dates of publication	2017-12
Size	p. 193.
Publishing place	BioMed Central
Document type	Article
ZDB-ID	2409480-8
ISSN	1756-3305
ISSN	1756-3305
DOI	10.1186/s13071-017-2108-6
Database	NAL-Catalogue (AGRICOLA)

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Article: Parahepatospora carcini n. gen., n. sp., a parasite of invasive Carcinus maenas with intermediate features of sporogony between the Enterocytozoon clade and other microsporidia

Bojko, Jamie / Alison M. Dunn / David Bass / Fraser Clark / Grant D. Stentiford / Paul D. Stebbing / Sarah Stewart-Clark

Journal of invertebrate pathology. 2017 Feb., v. 143

2017

Abstract: Parahepatospora carcini n. gen. n. sp., is a novel microsporidian parasite discovered infecting the cytoplasm of epithelial cells of the hepatopancreas of a single Carcinus maenas specimen. The crab was sampled from within its invasive range in Atlantic ... ...

Abstract	Parahepatospora carcini n. gen. n. sp., is a novel microsporidian parasite discovered infecting the cytoplasm of epithelial cells of the hepatopancreas of a single Carcinus maenas specimen. The crab was sampled from within its invasive range in Atlantic Canada (Nova Scotia). Histopathology and transmission electron microscopy were used to show the development of the parasite within a simple interfacial membrane, culminating in the formation of unikaryotic spores with 5–6 turns of an isofilar polar filament. Formation of a multinucleate meront (>12 nuclei observed) preceded thickening and invagination of the plasmodial membrane, and in many cases, formation of spore extrusion precursors (polar filaments, anchoring disk) prior to complete separation of pre-sporoblasts from the sporogonial plasmodium. This developmental feature is intermediate between the Enterocytozoonidae (formation of spore extrusion precursors within the sporont plasmodium) and all other Microsporidia (formation of spore extrusion precursors after separation of sporont from the sporont plasmodium). SSU rRNA-based gene phylogenies place P. carcini within microsporidian Clade IV, between the Enterocytozoonidae and the so-called Enterocytospora-clade, which includes Enterocytospora artemiae and Globulispora mitoportans. Both of these groups contain gut-infecting microsporidians of aquatic invertebrates, fish and humans. According to morphological and phylogenetic characters, we propose that P. carcini occupies a basal position to the Enterocytozoonidae. We discuss the discovery of this parasite from a taxonomic perspective and consider its origins and presence within a high profile invasive host on the Atlantic Canadian coastline.
Keywords	Carcinus maenas ; crabs ; cytoplasm ; Enterocytozoon ; epithelial cells ; extrusion ; genes ; hepatopancreas ; histopathology ; new species ; parasites ; phylogeny ; spores ; sporogony ; transmission electron microscopy ; Nova Scotia
Language	English
Dates of publication	2017-02
Size	p. 124-134.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	390885-9
ISSN	1096-0805 ; 0022-2011
ISSN (online)	1096-0805
ISSN	0022-2011
DOI	10.1016/j.jip.2016.12.006
Database	NAL-Catalogue (AGRICOLA)

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Article: Diseases of dab (Limanda limanda): Analysis and assessment of data on externally visible diseases, macroscopic liver neoplasms and liver histopathology in the North Sea, Baltic Sea and off Iceland

Lang, Thomas / A. Dick Vethaak / Grant D. Stentiford / John P. Bignell / Stephen W. Feist / Werner Wosniok

Marine environmental research. 2017 Mar., v. 124

2017

Abstract: In the framework of the ICON project (Integrated Assessment of Contaminant Impacts on the North Sea), common dab (Limanda limanda) from seven offshore sampling areas in the North Sea, Icelandic waters and the western Baltic Sea were examined in 2008 for ... ...

Abstract	In the framework of the ICON project (Integrated Assessment of Contaminant Impacts on the North Sea), common dab (Limanda limanda) from seven offshore sampling areas in the North Sea, Icelandic waters and the western Baltic Sea were examined in 2008 for the presence of externally visible diseases and parasites (EVD), macroscopic liver neoplasms (tumours) (MLN) and histopathological liver lesions (LH). Methodologies applied followed standardised ICES and BEQUALM protocols. The EDV results revealed pronounced spatial variation, with dab from the central and northern North Sea sampling areas showing the highest disease prevalence. MLN were recorded only in North Sea dab from the German Bight, Firth of Forth and Ekofisk at a low prevalence. LH results revealed a dominant prevalence of non-specific, mostly inflammatory, lesions and a low prevalence of early toxicopathic non-neoplastic lesions, tumour pre-stages (foci of cellular alteration) and liver tumours. For the analysis and assessment of spatial variation of EVD, a Fish Disease Index (FDI) was calculated for individual dab, summarising data on the presence/absence of EDV, their severity grades, effects on the host and compensating for effects of length, sex and season. FDI data confirmed that the health status of North Sea dab from the offshore areas Dogger Bank, Ekofisk and Firth of Forth was significantly worse than in dab from the German Bight, Icelandic areas and the western Baltic Sea. An assessment of the disease data following ICES/OSPAR criteria was accomplished by applying established numeric background (BAC) and ecological assessment criteria (EAC) for EDV, MLN and LH. The combined assessment of the three disease categories indicated that health effects classified as unacceptable were rare and mainly affected dab from the North Sea.Based on the findings of the present study, it is recommended to monitor wild fish diseases in the context of assessing the impact of hazardous substances and other stressors on the marine environment. The Fish Disease Index (FDI) is regarded as a strong tool for disease data analysis and assessment, suitable as ecosystem health indicator.
Keywords	disease prevalence ; environmental health ; fish diseases ; health status ; histopathology ; Limanda limanda ; liver ; liver neoplasms ; marine environment ; parasites ; toxic substances ; wild fish ; Baltic Sea ; Iceland ; North Sea
Language	English
Dates of publication	2017-03
Size	p. 61-69.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	1502505-6
ISSN	1879-0291 ; 0141-1136
ISSN (online)	1879-0291
ISSN	0141-1136
DOI	10.1016/j.marenvres.2015.12.009
Database	NAL-Catalogue (AGRICOLA)

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Article: Hepatocellular adenoma in a European flatfish (Limanda limanda): Genetic alterations in laser-capture micro-dissected tissue and global transcriptomic approach

Lerebours, Adélaïde / Brett P. Lyons / Emma Chapman / Grant D. Stentiford / Jeanette M. Rotchell / John P. Bignell

Marine pollution bulletin. 2017 June 30, v. 119, no. 2

2017

Abstract: Liver tumours in flatfish have been diagnosed using histopathology for decades to monitor the impacts of marine pollution. Here we describe the application of specific gene (retinoblastoma, Rb) profiling in laser capture micro-dissected samples, and a ... ...

Abstract	Liver tumours in flatfish have been diagnosed using histopathology for decades to monitor the impacts of marine pollution. Here we describe the application of specific gene (retinoblastoma, Rb) profiling in laser capture micro-dissected samples, and a suppression subtractive hybridization (SSH) approach to isolate differentially expressed genes in hepatocellular adenoma (HCA) samples from dab, Limanda limanda.The Rb profiles from apparently normal and HCA micro-dissected samples of fish from the North Sea showed no significant difference, and genotypic heterogeneity within defined histological phenotypes was observed. In the SSH, sequences associated with cell signalling, cell cycle, gene expression regulation, protein transport and protein degradation were isolated. These included up-regulation of arrestin domain containing 3 (arrdc3), Rac-1 and tribbles, and down-regulation of ankyrin repeat/sterile alpha-motif domain-containing protein 1B-like (ANKS1B-like), c-fos, CDKN1B and RhoA-like sequences, previously implicated in mammalian HCA. This study offers new candidates involved in fish liver tumour development.
Keywords	adenoma ; cell communication ; cell cycle ; fish ; gene expression regulation ; genes ; genetic heterogeneity ; histology ; histopathology ; Limanda limanda ; liver neoplasms ; mammals ; phenotype ; pollution ; protein degradation ; suppression subtractive hybridization ; transcriptomics ; North Sea
Language	English
Dates of publication	2017-0630
Size	p. 120-127.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2017.04.052
Database	NAL-Catalogue (AGRICOLA)

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