Esocid lymphosarcoma
fish disease
Esocid lymphosarcoma, also known as Esox lymphosarcoma, is a transmissible tumor which affects two species of fish, northern pike (Esox lucius) and Muskellunge (Esox masquinongy), in North America and Europe. The tumors initially are found in the skin, but later in the course of the disease are also found in the internal organs. The tumors appear as colorless skin protrusions which are several centimeters in diameter. A retrovirus has been detected in affected cells by electron microscopy. The disease is spread by physical contact between fish, probably during the spring spawning season. The disease has the lowest prevalence in the summer.
The public source identifies “Esocid lymphosarcoma” as fish disease. This brief keeps that definition visible, then builds a research path around Esocid, lymphosarcoma and fish.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Esocid lymphosarcoma”, the useful work is to connect “fish disease” to the records capable of establishing context and consequence.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 18, 2026. The linked authority identifier is Q10512275. None of the 0 selected statements returned an explicit reference.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Esocid lymphosarcoma”, its source revision and the description used here.
- Expand the search: follow Esocid lymphosarcoma primary sources, Esocid lymphosarcoma archive and Esocid research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Esocid lymphosarcoma”?
- Has classification or technical consensus changed since the cited source?
- Which observation, specimen, dataset or publication supports the account?
Search terms from this dossier
This entry incorporates text from “Esocid lymphosarcoma” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.