Dallia

{{Short description|Genus of fishes}} {{Automatic taxobox | fossil_range = {{fossil range|Late Miocene|present}} | image = Dallia pectoralis (line art).jpg | image_caption = '' Dallia pectoralis'' | parent_authority = Jordan, 1885 | taxon = Dallia | authority = 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.''<ref>{{Cite journal|last1=López|first1=J. Andrés|last2=Chen|first2=Wei-Jen|last3=Ortí|first3=Guillermo | name-list-style = vanc |date=2004|title=Esociform Phylogeny |journal=Copeia |volume=2004|issue=3|pages=449–464|doi=10.1643/cg-03-087r1 |s2cid=198150295|doi-access=free}}</ref><ref name=":0">{{cite journal | vauthors = Campbell MA, López JA, Sado T, Miya M | title = Pike and salmon as sister taxa: detailed intraclade resolution and divergence time estimation of Esociformes + Salmoniformes based on whole mitochondrial genome sequences | journal = Gene | volume = 530 | issue = 1 | pages = 57–65 | date = November 2013 | pmid = 23954876 | doi = 10.1016/j.gene.2013.07.068 }}</ref> ''Dallia'' diverged from ''Novumbra'' + ''Esox'' approximately 66 million years ago.<ref name=":0" /> The genus was named after American naturalist William Healey Dall.<ref>{{Cite web |date=2024-10-04 |title=Family ESOCIDAE Rafinesque 1815 (Pikes and Mudminnows) |url=https://etyfish.org/esocidae/ |access-date=2025-04-14 |website=The ETYFish Project |language=en-US}}</ref>

==Species== Three species in this genus are recognized:<ref>{{FishBase genus | genus = Dallia| month = February | date = 2012}}</ref>

* ''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.<ref>{{cite journal | vauthors = Campbell MA, Lopéz JA | title = Mitochondrial phylogeography of a Beringian relict: the endemic freshwater genus of blackfish Dallia (Esociformes) | journal = Journal of Fish Biology | volume = 84 | issue = 2 | pages = 523–38 | date = February 2014 | pmid = 24490938 | doi = 10.1111/jfb.12314 | bibcode = 2014JFBio..84..523C }}</ref><ref>{{Cite journal|last1=Campbell|first1=Matthew A.|last2=Sage|first2=George K.|last3=DeWilde|first3=Rachel L.|last4=López|first4=J. Andrés|last5=Talbot|first5=Sandra L. | name-list-style = vanc |date=2013-12-05|title=Development and characterization of 16 polymorphic microsatellite loci for the Alaska blackfish (Esociformes: Dallia pectoralis) |journal=Conservation Genetics Resources|language=en|volume=6|issue=2|pages=349–351|doi=10.1007/s12686-013-0091-6|s2cid=16876417|issn=1877-7252}}</ref><ref>{{cite journal | vauthors = Campbell MA, Takebayashi N, López JA | title = Beringian sub-refugia revealed in blackfish (Dallia): implications for understanding the effects of Pleistocene glaciations on Beringian taxa and other Arctic aquatic fauna | language = En | journal = BMC Evolutionary Biology | volume = 15 | issue = 1 | pages = 144 | date = July 2015 | pmid = 26187279 | pmc = 4506597 | doi = 10.1186/s12862-015-0413-2 | doi-access = free | bibcode = 2015BMCEE..15..144C }}</ref><ref>{{Cite journal | vauthors = Crossman E, Ráb P | date = 1996 | title=Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes|journal=Canadian Journal of Zoology|volume=74|issue=1|pages=147–156|doi=10.1139/z96-019 | bibcode = 1996CaJZ...74..147C }}</ref>

Fossil remains of ''Dallia'' are known from the Late Miocene near Homer, Alaska, suggesting they were found further south in the past. Pleistocene-aged fossil remains also suggest they ranged significantly more west in Siberia as well.<ref>{{Cite journal |last1=Campbell |first1=Matthew A. |last2=Takebayashi |first2=Naoki |last3=López |first3=J. Andrés |date=2015-07-19 |title=Beringian sub-refugia revealed in blackfish (Dallia): implications for understanding the effects of Pleistocene glaciations on Beringian taxa and other Arctic aquatic fauna |journal=BMC Evolutionary Biology |language=en |volume=15 |issue=1 |pages=144 |doi=10.1186/s12862-015-0413-2 |doi-access=free |issn=1471-2148 |pmc=4506597 |pmid=26187279|bibcode=2015BMCEE..15..144C }}</ref>

==References== {{Reflist}}

Category:Umbridae Category:Actinopterygii genera Category:Taxa named by Tarleton Hoffman Bean