Morphology and phylogeny of Henneguya oviperda infecting oocytes of Esox lucius, with description of parasite-induced histopathology
| Autor: | A N Parshukov, E. P. Ieshko, Lebedeva Di, K A Bystrova, Svetlana A. Murzina, S. G. Sokolov |
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| Rok vydání: | 2019 |
| Předmět: |
040301 veterinary sciences
Zoology Aquatic Science 0403 veterinary science Fish Diseases medicine Animals Parasite hosting Parasites Myxozoa Ribosomal DNA Phylogeny Ecology Evolution Behavior and Systematics Esox biology Plasmodium (life cycle) Actinopterygii 04 agricultural and veterinary sciences biology.organism_classification Oocyte Myxobolidae medicine.anatomical_structure Esocidae Oocytes 040102 fisheries 0401 agriculture forestry and fisheries |
| Zdroj: | Diseases of Aquatic Organisms. 133:91-98 |
| ISSN: | 1616-1580 0177-5103 |
| DOI: | 10.3354/dao03331 |
| Popis: | Henneguya oviperda (Cohn, 1895) (Myxozoa: Myxobolidae) is a parasite infecting oocytes of the northern pike Esox lucius Linnaeus, 1758 (Actinopterygii: Esocidae). Infected oocytes are surrounded by all oocyte layers, some of them thinner and less visible than intact oocytes. A mature plasmodium of H. oviperda fills the entire internal space of the oocytes at the secondary growth phase, rendering the nucleus and organelles of the latter undetectable. Apart from the observed degradation of internal structures, alterations in the envelopes of the infected oocytes, and the deformation of the intact oocytes adjacent to them, no other developmental anomalies have been found in the reproductive products of female northern pike. Mature spores of H. oviperda have oval bodies with polar capsules of almost equal size and caudal projections that are on average equal to the spore body length. Phylogenetic analysis comparing 18S rDNA sequences placed H. oviperda into a clade of esocid-infecting species of the genus Henneguya and also supported H. psorospermica as a sister species. |
| Databáze: | OpenAIRE |
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