Hyalophysa lynni n. sp. (Ciliophora, Apostomatida), a new pathogenic ciliate and causative agent of shrimp black gill in penaeid shrimp.
Eur J Protistol
; 73: 125673, 2020 Apr.
Article
in En
| MEDLINE
| ID: mdl-32007803
ABSTRACT
The parasitic ciliate causing shrimp black gill (sBG) infections in penaeid shrimp has been identified. The sBG ciliate has a unique life cycle that includes an encysted divisional stage on the host's gills. The ciliature of the encysted trophont stage has been determined and is quite similar to that of the closely related apostomes Hyalophysa bradburyae and H. chattoni. Hyalophysa bradburyae is a commensal ciliate associated with freshwater caridean shrimp and crayfish, while H. chattoni is a common commensal found on North American marine decapods. Based on 18S rRNA gene sequence comparisons, the sBG ciliate is more closely related to the marine species H. chattoni than to the freshwater species H. bradburyae. The unique life cycle, morphology, 18S rRNA gene sequence, hosts, location, and pathology of the sBG ciliate distinguish this organism as a new species, Hyalophysa lynni n. sp.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oligohymenophorea
/
Penaeidae
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Eur J Protistol
Journal subject:
BIOLOGIA
Year:
2020
Type:
Article