Biogeography of the Antarctic dragonfishes Acanthodraco dewitti and Psilodraco breviceps with re-description of Acanthodraco dewitti larvae (Notothenioidei: Bathydraconidae)
Biogeography of the Antarctic dragonfishes Acanthodraco dewitti and Psilodraco breviceps with re-description of Acanthodraco dewitti larvae (Notothenioidei: Bathydraconidae)
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南极龙鱼 Acanthodraco dewitti 和 Psilodraco breviceps 的生物地理学以及对 Acanthodraco dewitti 幼虫的重新描述(Notothenioidei:BatHydraconidae)
DOI:
10.1007/s00300-020-02661-y
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发表时间:
2020
期刊:
影响因子:
1.7
通讯作者:
Konstantinidis, Peter
中科院分区:
文献类型:
--
作者:
Desvignes, Thomas;Postlethwait, John H.;Konstantinidis, Peter
Antarctic dragonfishes (Bathydraconidae) of the suborder Notothenioidei are found only in the Southern Ocean where they diversified in habitats from the surface to the bathypelagic zone thousands of meters deep. Among dragonfishes, the pelagic Gymnodraconinae sister speciesAcanthodraco dewittiandPsilodraco brevicepsremain poorly known. AlthoughA. dewittiis thought to be restricted to Antarctic waters andP. brevicepsto be endemic to South Georgia Island, severalP. brevicepsspecimens have occasionally been reported in coastal Antarctica. Here we investigated the molecular genetic identity of the two species and their geographic distribution. Three mitochondrial genetic markers (mt-cyb,mt-co1, andmt-nd2) identified two dragonfish larvae collected on the West Antarctic Peninsula asA. dewittiand showed that all six specimens with available genetic data and reported to beP. brevicepscollected in Antarctic waters were alsoA. dewitti. These results support the allopatric distribution of the two species, withP. brevicepsbeing endemic to South Georgia Island andA. dewittibeing endemic to Antarctic waters, potentially with a circumpolar distribution. The biogeography of the sister speciesA. dewittiandP. brevicepsis likely similar to the allopatric distribution of the congeneric sister dragonfish speciesParachaenichthys charcotiandP. georgianus.These considerations suggest that the Antarctic Circumpolar Current may geographically isolate the sub-Antarctic and Antarctic species of both sister species pairs, limiting gene flow and promoting speciation. Furthermore, we provide a detailed description of theA. dewittilarvae to supply characteristic morphological features differentiatingA. dewittiandP. brevicepslarvae.
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DOI:
10.1016/j.dsr2.2007.11.015
发表时间:
2008
影响因子:
3
作者:
J. Donnelly;J. Torres
通讯作者:
J. Torres
影响因子:
1.6
作者:
M. La Mesa;E. Riginella;Christopher D. Jones
通讯作者:
M. La Mesa;E. Riginella;Christopher D. Jones
影响因子:
1.7
作者:
G. L. Piacentino;E. Moreira;E. Barrera
通讯作者:
E. Barrera
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
J. Eastman
通讯作者:
J. Eastman
影响因子:
1.7
作者:
M. Vacchi;M. La Mesa;C. ozouF
通讯作者:
C. ozouF