The presence of Apicomplexan parasites in king scallops (Pecten maximus) in Scottish waters
| Autor: | Anne McLay, Sílvia M. C. Soares, Lynda Blackadder, Hannah E. B. Stagg, Eann S. Munro |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine animal structures education Zoology macromolecular substances 01 natural sciences Aequipecten 03 medical and health sciences stomatognathic system Chlamys islandica Parasite hosting Pecten maximus Animals Mortality Ecology Evolution Behavior and Systematics Shellfish Shetland Pecten biology biology.organism_classification Queen scallop 010602 entomology Pectinidae 030104 developmental biology Scotland Seafood Scallop Adductor muscles Apicomplexa Genome Protozoan geographic locations |
| Zdroj: | Journal of invertebrate pathology. 178 |
| ISSN: | 1096-0805 |
| Popis: | The king scallop (Pecten maximus) is a commercially important species found around the United Kingdom coast. The association of an Apicomplexan-like parasite with mass mortality of Icelandic scallop (Chlamys islandica) in Iceland and the presence of identical parasites in king scallop (Pecten maximus) and queen scallop (Aequipecten opercularis) in Scotland raised serious concerns regarding the health of Scottish king scallops. Marine Scotland Science (MSS) conducted a survey in 2016 to assess the prevalence and the intensity of parasite infection in king scallops. King scallops were collected and sampled during the annual scallop dredge surveys in the Shetland Isles and the east and west coast of Scotland. The king scallop adductor muscle was macroscopically examined and tissue imprints taken to grade the intensity of infection. The parasite was present in the majority of the king scallops sampled in all surveyed areas: Shetland Isles 87.1%, east coast 76.0% and west coast of Scotland 64.1%. However, the parasitic infestations were light in intensity with the majority of the king scallops graded as 1 (≤20 zoites per microscopic field). No macroscopic changes in the adductor muscle were observed and histopathology examination revealed minor localized fiber degeneration of adjacent fibers to parasite clusters. The results suggested the parasite to be widespread around the Scottish coast and it appears to be able to live within the king scallop at low intensity of infection without causing significant downgrade of the adductor muscle (in terms of colour or texture) or mortality. The partial genome sequence of the parasite in king scallops from Scottish waters was identical to the one reported by Kristmundsson and Freeman (2018) in the Icelandic scallop in Icelandic waters. |
| Databáze: | OpenAIRE |
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