Tyrannodoris tigris

{{Short description|Species of gastropod}}

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| genus = Tyrannodoris

| species = tigris

| authority = (Farmer, 1978)

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{{Species list

|Roboastra tigris|Farmer, 1978Farmer, W.M. (1978). "Tambja and Roboastra (Mollusca, Opisthobranchia) from the Gulf of California and the Galapagos Islands." The Veliger 20: 375-385.}}

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Tyrannodoris tigris is a species of sea slug, a polycerid nudibranch, a marine gastropod mollusc in the family Polyceridae.MolluscaBase (2018). [http://marinespecies.org/aphia.php?p=taxdetails&id=1036134 Tyrannodoris tigris (Farmer, 1978).] Accessed through: World Register of Marine Species on 2018-08-20. It is a known predator of Tambje eliora and Tambje abdere, two species of smaller nudibranchs. The chemical extracts of all three species contain tambjamines, which were traced to Sessibugula translucens, a food source of these species. It is hypothesized that tambjamines are a chemical defence mechanism against feeding by the spotted kelpfish Gibbonsia elegans.{{Cite journal | doi = 10.1021/jo00162a003| title = Defensive metabolites from three nembrothid nudibranchs| journal = The Journal of Organic Chemistry| volume = 48| issue = 14| pages = 2314| year = 1983| last1 = Carté | first1 = B. | last2 = Faulkner | first2 = D. J. }}{{cite journal |doi=10.1007/BF01012111 |title=Role of secondary metabolites in feeding associations between a predatory nudibranch, two grazing nudibranchs, and a bryozoan |year=1986 |last1=Carté |first1=Brad |last2=Faulkner |first2=D. John |journal=Journal of Chemical Ecology |volume=12 |issue=3 |pages=795–804 |pmid=24306917 |bibcode=1986JCEco..12..795C |s2cid=20245013 }}