New tools (<scp>DNA</scp> barcoding), old hypothesis: the case of the taxonomic identity of the Argentine hakes (Actinopterygii: <i>Merluccius</i>)

Antoni, Mariana Y. Deli; González‐Castro, Mariano; Astarloa, Juan Martín Díaz de

doi:10.1111/jfb.12745

Cited by 2 publications

(4 citation statements)

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“…For instance, the six clones of the M. hubbsi paratype from the Beagle Channel (HUBBM91 and HUBBM92) shared ITS1Nes variants with all other morphotypes, including M. patagonicus (PATAM101 and PATAM111). After the description of the M. patagonicus 23 some additional analyses suggested its synonymy with M. hubbsi 29,31 . However, the three paratypes of M. patagonicus did not share any sequence variant with true specimens of M. hubbsi (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…hubb153.2) but branched between the clusters of Austral hakes and Pacific hakes. Likewise, M. tasmanicus 24 and M. polylepis from the Southern Ocean 32 had been proposed as synonymous of M. australis 6,29,30 . However, their phylogenetic status was much like the rest of morphotypes, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…the paratypes of M. australis from Chile and from New Zealand. It is probable that those rare morphotypes resemble extant species when analyzed with more conservative markers such as the mtDNA Cytochrome c oxidase subunit I (COI) 29 . However, less conservative regions such as the ITS1-rDNA suggest that the morphotypes examined are the result of recurrent hybridization between adjacent M. gayi and M. australis or M. hubbsi in the Southern Cone.…”

Section: Discussionmentioning

confidence: 99%

“…Also, meristic (see Fig. 1 from 23 ) and molecular analyses 29,30 showed that M. patagonicus could be synonymous with M. hubbsi and that M. tasmanicus could be synonymous with M. australis 31 . Taxonomic uncertainties are expected in closelyrelated species that show extensive overlap in morphological and meristic traits.…”

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confidence: 98%

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Phylogenetic prospecting for cryptic species of the genus Merluccius (Actinopterygii: Merlucciidae)

Pérez

Fernández-Míguez

Matallanas

et al. 2021

Sci Rep

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Hakes of the genus Merluccius include 11 valid species as well a number of rare morphotypes suspected to be “cryptic species”. Concatenated nucDNA ITS1-rDNA and mtDNA cyt b sequences plus nested ITS1Nes sequences allowed to ascribe 14 specimens of nine rare morphotypes from the South Pacific and the South Atlantic to the phylogenetic backbone of this genus. Bayesian analyses pointed to M. bilinearis and M. albidus as the oldest species of the genus and the New World cluster, respectively. The phylogenetic status of M. angustimanus from the upper Gulf of California suggests its hybrid origin between M. gayi and M. productus from about 0.25 MYA, although an ever since confinement of a subset of those species cannot be ruled out. The molecular phylodiagnostic test suggests a common origin of all rare morphotypes and the absence of cryptic hake species in the Southern Cone. The molecular background of the morphotypes distributed between the Western Pacific South of New Zealand and the western Atlantic South of Argentina is compatible with their hybrid origin between M. gayi and both, M. australis or M. hubbsi, respectively.

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Section: Discussionmentioning

confidence: 99%