AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Haplosporidium nelsoni [WoRMS] | |
Authority | Haskin, Stauber & Mackin, 1966 | |
Family | Haplosporiidae | |
Order | Haplosporida | |
Class | Ascetosporea | |
Phylum | Cercozoa | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Pacific |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Asexual Sexual References: Ford, S. E., Stokes, N. A., Alcox, K. A., Kraus, B. S. F., Barber, R. D., Carnegie, R. B., Burreson, E. M. 2018. Investigating the life cycle of Haplosporidium nelsoni (MSX): A review. Journal of Shellfish Research, 37(4), pp. 679-693. |
Developmental trait (?) | Unknown Comments: Not available. |
Characteristic feeding method / Life stage (?) |
Comments: Parasite. |
Mobility / Life stage (?) |
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Salinity tolerance range (?) | Exact range: 10 - 35 References: Smithsonian Environmental Research Center. "Haplosporidium nelsoni." NEMESIS - Chesapeake Bay Introduced Species Database, invasions.si.edu/nemesis/chesreport/species_summary/Haplosporidium%20nelsoni. Accessed 15 July 2024. |
Habitat modifying ability potential (?) | Unknown Comments: Not available. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Known References: Carnegie, R. B., Burreson, E. M. 2011. Declining impact of an introduced pathogen: Haplosporidium nelsoni in the oyster Crassostrea virginica in Chesapeake Bay. Marine Ecology Progress Series, 432, pp. 1-15. Comments: Haplosporidium nelsoni is a pathogen of oysters that originally caused oyster populations to experience high mortality rates in the 1950s, and still is quite prevalent today. |
Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF]. Available at: (https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf) |
Association with vessel vectors (?) | Ballast waters References: Burreson, E. M., Ford, S. E. 2004. A review of recent information on the Haplosporidia, with special reference to Haplosporidium nelsoni (MSX disease). Aquatic Living Resources, 17(4), pp. 499-517. Comments: Shipping could have introduced H. nelsoni via infected C. gigas attached to ship’s hulls or via release of H. nelsoni spores in the discharge of ballast water. |
Molecular information | Available NCBI (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?term=haplosporidium+nelsoni) |
Created by | Romualda Chuševė, 2011-11-08 |
Last update by | Sandra Gečaitė, 2024-07-17 |