Dallia

Dallia
Dallia pectoralis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Esociformes
Family:	Esocidae
Genus:	Dallia T. H. Bean, 1880

Dallia (Blackfish) is a genus of mudminnows native to Russia and Alaska. Molecular data indicates the genus is more closely related to Esox and Novumbra than Umbra.[1][2] Dallia diverged from Novumbra + Esox approximately 66 million years ago.[2]

Species

Three species in this genus are recognized:[3]

Dallia admirabilis Chereshnev, 1980 (Amguema blackfish)

Dallia delicatissima Smitt, 1881 (Pilkhykay blackfish)

Dallia pectoralis T. H. Bean, 1880 (Alaska blackfish)

Mitochondrial sequence data was examined from D. pectoralis and D. admirabilis and did not indicate that speciation within the genus in Russia; however, genetic isolation within Alaska for populations of D. pectoralis could be high and associated with karyotype differences.[4][5][6][7]

References

1. López JA, Chen WJ, Ortí G (2004). "Esociform Phylogeny". Copeia. 2004 (3): 449–464. doi:10.1643/cg-03-087r1. S2CID 198150295.
2. Campbell MA, López JA, Sado T, Miya M (November 2013). "Pike and salmon as sister taxa: detailed intraclade resolution and divergence time estimation of Esociformes + Salmoniformes based on whole mitochondrial genome sequences". Gene. 530 (1): 57–65. doi:10.1016/j.gene.2013.07.068. PMID 23954876.
3. Froese, Rainer; Pauly, Daniel, eds. (2012). "Species in genus Dallia". FishBase.
4. Campbell MA, Lopéz JA (February 2014). "Mitochondrial phylogeography of a Beringian relict: the endemic freshwater genus of blackfish Dallia (Esociformes)". Journal of Fish Biology. 84 (2): 523–38. doi:10.1111/jfb.12314. PMID 24490938.
5. Campbell MA, Sage GK, DeWilde RL, López JA, Talbot SL (2013-12-05). "Development and characterization of 16 polymorphic microsatellite loci for the Alaska blackfish (Esociformes: Dallia pectoralis)". Conservation Genetics Resources. 6 (2): 349–351. doi:10.1007/s12686-013-0091-6. ISSN 1877-7252. S2CID 16876417.
6. Campbell MA, Takebayashi N, López JA (July 2015). "Beringian sub-refugia revealed in blackfish (Dallia): implications for understanding the effects of Pleistocene glaciations on Beringian taxa and other Arctic aquatic fauna". BMC Evolutionary Biology. 15 (1): 144. doi:10.1186/s12862-015-0413-2. PMC 4506597. PMID 26187279.
7. Crossman E, Ráb P (1996). "Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes". Canadian Journal of Zoology. 74 (1): 147–156. doi:10.1139/z96-019.