Ecytonucleospora hepatopenaei n. gen. et comb. (Microsporidia: Enterocytozoonidae): A redescription of the Enterocytozoon hepatopenaei (Tourtip et al., 2009), a microsporidian infecting the widely cultivated shrimp Penaeus vannamei

Wang, Yuan; Chen, Jie; Na, Ying; Li, Xin-cang; Zhou, Jun-fang; Fang, Wen-hong; Tan, Hong-xin

doi:10.1016/j.jip.2023.107988

Journal of Invertebrate Pathology

2023

DOI: 10.1016/j.jip.2023.107988

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Ecytonucleospora hepatopenaei n. gen. et comb. (Microsporidia: Enterocytozoonidae): A redescription of the Enterocytozoon hepatopenaei (Tourtip et al., 2009), a microsporidian infecting the widely cultivated shrimp Penaeus vannamei

Yuan Wang,

Jie Chen,

Ying Na

et al.

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Cited by 13 publications

(1 citation statement)

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“…Actually, microsporidia infecting aquatic animals have been reported frequently in recent years, causing huge economic losses all over the world. For instance, Ecytonucleospora hepatopenaei (EHP) is easy to infect the hepatopancreas tissue of Penaeus vannamei (Wang et al, 2023), which leads to serious growth retardation and feed consumption…”

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Establishment of aTaqManprobe‐basedqPCRassay for detecting microsporidiaEnterospora epinepheliin grouper

Liu,

Wang,

Chen

et al. 2023

Journal of Fish Diseases

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Enterospora epinepheli is an intranuclear microsporidian parasite causing serious emaciative disease in hatchery‐bred juvenile groupers (Epinephelus spp.). Rapid and sensitive detection is urgently needed as its chronic infection tends to cause emaciation as well as white faeces syndrome and results in fry mortality. This study established a TaqMan probe‐based real‐time quantitative PCR assays targeting the small subunit rRNA (SSU) gene of E. epinepheli. The relationship between the standard curve of cycle threshold (Ct) and the logarithmic starting quantity (SQ) was determined as Ct = −3.177 lg (SQ) + 38.397. The correlation coefficient (R2) was 0.999, and the amplification efficiency was 106.4%. The detection limit of the TaqMan probe‐based qPCR assay was 1.0 × 101 copies/μL and that is 100 times sensitive than the traditional PCR method. There is no cross‐reaction with other aquatic microsporidia such as Ecytonucleospora hepatopenaei, Nucleospora hippocampi, Potaspora sp., Ameson portunus. The intra‐assay and inter‐assay showed great repeatability and reproducibility. In addition, the test of clinical samples showed that this assay effectively detected E. epinepheli in the grouper's intestine tissue. The established TaqMan qPCR assays will be a valuable diagnostic tool for the epidemiological investigation as well as prevention and control of E. epinepheli.

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confidence: 99%

Establishment of aTaqManprobe‐basedqPCRassay for detecting microsporidiaEnterospora epinepheliin grouper

Liu,

Wang,

Chen

et al. 2023

Journal of Fish Diseases

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Invisible invaders: range expansion of feral Neocaridina davidi offers new opportunities for generalist intracellular parasites

Prati,

Grabner,

Hupało

et al. 2024

Biol Invasions

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The release of ornamental pets and associated pathogens outside their native range might directly or indirectly impact the recipient community. In temperate regions, e.g., central Europe, feral freshwater species of tropical and sub-tropical origins are mainly constrained to thermally polluted waters and thermal springs. However, species with high environmental plasticity and reproduction rates, such as the shrimp Neocaridina davidi, may adapt to colder water regimes over time. A widening thermal niche may eventually overcome thermal barriers, further expanding the range and enhancing transmission opportunities for host generalist parasites. This study assesses the observed (field observations) and theoretical (species distribution models) range expansion of N. davidi and associated parasites in Europe. We report three newly established N. davidi populations from thermally polluted waters in central Europe (Germany, Hungary, and Slovakia) and provide further evidence of its range expansion into colder environments. Species distribution models predict thermally suitable habitats in the Mediterranean and a foreseeable expansion into Western Europe and the Balkans by 2050. We confirm the presence of the microsporidian parasite Ecytonucleospora hepatopenaei in feral N. davidi populations across Europe and expand the list of microsporidians found in this host from two to four. Furthermore, we provide the first evidence of parasite spillover from/to the invasive crayfish Procambarus clarkii, suggesting that parasite exchange with native biota might be possible. Such possibility, coupled with an ongoing range expansion of N. davidi bolstered by human-mediated introductions and climate change, will likely exacerbate the impact on native biota.

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Ecytonucleospora hepatopenaei proliferate in Procambarus clarkii: A warning for crayfish and shrimp aquaculture

Ling,

Wu,

et al. 2024

Aquaculture

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Ecytonucleospora hepatopenaei n. gen. et comb. (Microsporidia: Enterocytozoonidae): A redescription of the Enterocytozoon hepatopenaei (Tourtip et al., 2009), a microsporidian infecting the widely cultivated shrimp Penaeus vannamei

Cited by 13 publications

References 46 publications

Establishment of aTaqManprobe‐basedqPCRassay for detecting microsporidiaEnterospora epinepheliin grouper

Establishment of aTaqManprobe‐basedqPCRassay for detecting microsporidiaEnterospora epinepheliin grouper

Invisible invaders: range expansion of feral Neocaridina davidi offers new opportunities for generalist intracellular parasites

Ecytonucleospora hepatopenaei proliferate in Procambarus clarkii: A warning for crayfish and shrimp aquaculture

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