Oceans of hypotheses – comprehensive alpha-taxonomic accounts and integrative taxonomic revisions in <i>Marine Biology Research</i>

Uiblein, Franz

doi:10.1080/17451000.2016.1228979

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Uiblein & Gouws (2015) provided an overview of the factors leading to the failure of DNA barcoding to successfully or accurately delineate species (e.g., misidentifications, pseudogenes, hybridization and introgression, or recent radiation and the retention of ancestral polymorphism). As in Uiblein & Gouws (2015), the intensive and rigorous nature of an integrated, comprehensive taxonomic approach (Uiblein 2016), coupled with the clear morphological distinction of the species concerned, argues against misidentifications, while the retained functionality of the COI gene region suggests that pseudogenes are not a pervasive concern. This leaves hybridization and introgression or a recent radiation and speciation as alternatives.…”

Section: Discussionmentioning

confidence: 99%

“…These specimens and the associated photographs were then studied and compared with the published (see above) and newly generated data. Specific focus was on japonicus-group species from the SWIO and adjacent areas by means of a combined comprehensive and integrative taxonomy approach using a large comparative set of morphological data and molecular methods (Uiblein 2016).…”

Section: Introductionmentioning

confidence: 99%

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Upeneus floros, a new goatfish from South Africa and Mozambique, with updated taxonomic accounts for U. guttatus and U. pori and a key to Western Indian Ocean Upeneus species (Mullidae)

Uiblein

Gouws

Lisher

et al. 2020

Zootaxa

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The highly diverse goatfish genus Upeneus (Mullidae) requires enhanced attention regarding the possible occurrence of undescribed species in insufficiently explored regions. This study focuses on the South-Western Indian Ocean region (SWIO), and on the so-called japonicus-group, a taxonomic species group of Upeneus. Based on in-situ observations and collections in Sodwana Bay, KwaZulu-Natal, South Africa, the Floros goatfish, U. floros n. sp., is described. Detailed comparative studies of colour patterns and morphological characters of all other 13 japonicus-group species were undertaken as well as COI barcoding. The new species occurs in the coastal area between Angoche, N Mozambique and KwaZulu-Natal and partly overlaps in distribution with two similar species, U. guttatus, widely distributed in the Indo-W Pacific, and U. saiab, assumed to be endemic in a small area off Angoche. Two additional japonicus-group species occurring in the SWIO, U. seychellensis from the Seychelles Bank and U. pori from the Mediterranean Sea (as Lessepsian migrant), Northern Red Sea and Madagascar, were also compared. Because specimens as well as in-situ photographs of U. floros have been erroneously identified as either U. guttatus or U. pori during previous studies, updated taxonomic accounts and diagnoses are provided for these species taking size-related and population differences into account. For U. pori, of which a single preserved specimen from SW Madagascar was known so far, a new record from NE Madagascar is reported based on three specimens and a fresh-colour photo. Upeneus floros can be distinguished from U. guttatus and U. pori by a combination of three characters: head length, first dorsal-fin height and number of gill rakers. Upeneus guttatus can be distinguished from the other two species by disproportionally higher anterior dorsal-fin spines vs. a proportional decrease of dorsal-fin spines in height, barbels mostly yellow vs. white or creamy-white, and slightly fewer pectoral-fin rays. COI barcoding detected a clear distinction between U. guttatus and U. floros and U. pori, respectively, but no significant divergence between the two latter species. COI barcoding also failed to differentiate several other Upeneus species which are clearly distinguished morphologically. Possible interrelationships between species distribution patterns and physical oceanography are discussed. An identification key for the 22 WIO Upeneus species is provided.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Upeneus floros, a new goatfish from South Africa and Mozambique, with updated taxonomic accounts for U. guttatus and U. pori and a key to Western Indian Ocean Upeneus species (Mullidae)

Uiblein

Gouws

Lisher

et al. 2020

Zootaxa

Self Cite

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Revisiting the description of Atractoscion macrolepis (Perciformes: Sciaenidae): Another argument for comprehensive taxonomy

GOUWS,

KRUGER,

SMALE

et al. 2024

Zootaxa

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Atractoscion macrolepis was described as a species separate to A. aequidens, distinguished by a geographically-separated distribution, genetic evidence and a diagnostic meristic character: the number of pored lateral line scales. However, the distinction of these species and description of A. macrolepis were based on the examination of a limited number of specimens, some of which were incorrectly catalogued and possibly wrongly identified. Moreover, earlier data, demonstrating the overlap of the supposedly diagnostic character, were overlooked or not considered fully. The present study aimed to reconsider the distinction of these two species and to highlight characters for identification, using a more extensive representation of specimens, additional character sets and multivariate analyses. Seven meristic characters, 24 morphometric measurements and nine otolith variables were examined from up to 33 specimens of A. aequidens and 52 specimens of A. macrolepis. These were compared among the species and subjected to univariate and multivariate analyses, including Principal Component Analyses (PCAs) and Discriminant Function Analyses (DFAs). No meristic characters, including the number of lateral line scales, could distinguish the species, with modes being identical or with nodes differing, but ranges overlapping. While the PCA of size-transformed morphometric data revealed some separation of the two species, the DFA indicated significant and reliable discrimination. Considering the otolith variables, the PCA showed weak separation of the two species, while fair discrimination was observed in the DFA. ANOVAs indicated a number of significant differences for some transformed otolith measurements, but there were no clear trends with respect to proportions that would discriminate the species. Further exploration of those morphometric variables highlighted as contributing to separation in the PCA and DFA provided a number of variables that, when expressed as a proportion of SL and used in combination, discriminate A. aequidens and A. macrolepis: HL, MCL, PFL, AFL and PLFL. The present study does not contest the taxonomic status of A. macrolepis, the distinction of which has been demonstrated repeatedly, but does refute the characters regarded as diagnostic. In light of this, an updated key is provided for the five species of the genus. The study demonstrates the value of increased specimen representation and having data fully available rather than in summary.

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Oceans of hypotheses – comprehensive alpha-taxonomic accounts and integrative taxonomic revisions in Marine Biology Research

Cited by 2 publications

References 6 publications

Upeneus floros, a new goatfish from South Africa and Mozambique, with updated taxonomic accounts for U. guttatus and U. pori and a key to Western Indian Ocean Upeneus species (Mullidae)

Upeneus floros, a new goatfish from South Africa and Mozambique, with updated taxonomic accounts for U. guttatus and U. pori and a key to Western Indian Ocean Upeneus species (Mullidae)

Revisiting the description of Atractoscion macrolepis (Perciformes: Sciaenidae): Another argument for comprehensive taxonomy

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