Phylogenetic Analysis of Ridgewayia (Copepoda: Calanoida) from the Galapagos and of a New Species from the Florida Keys With a Reevaluation of the Phylogeny of Calanoida

Figueroa, Diego F.

doi:10.1651/10-3341.1

Cited by 23 publications

(9 citation statements)

References 45 publications

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“…The use of conservative nuclear markers such as 18S and 28S is widely applied when investigating the monophyly and reciprocal relationships of higher taxa in copepods, while it is known to have loose resolution for the discrimination of infra-generic taxa (Braga et al, 1999;Thum, 2004;Blanco-Bercial et al, 2011;Figueroa, 2011). In the frame of this study, the tree topologies based on the nuclear ribosomal DNA fragments support the monophyly of the genus Hemidiaptomus (Fig.…”

Section: Systematicsmentioning

confidence: 55%

“…Sars and Gigantodiaptomus Kiefer) and nine species belonging to other diaptomid genera were included in the molecular analyses. Calanipeda aquaedulcis Kritchagin 1873, a representative of the family Pseudodiaptomidae, was chosen as outgroup in some of the analyses because this family is closely related to the family Diaptomidae (Bradford-Grieve et al, 2010;Figueroa, 2011). The complete list of studied material and its occurrence localities is reported in Table S1.…”

Section: Taxon Sampling and Identificationmentioning

confidence: 99%

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Overlooked cryptic endemism in copepods: Systematics and natural history of the calanoid subgenus Occidodiaptomus Borutzky 1991 (Copepoda, Calanoida, Diaptomidae)

Marrone

Brutto

Hundsdoerfer

et al. 2013

Molecular Phylogenetics and Evolution

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a b s t r a c tOur comprehension of the phylogeny and diversity of most inland-water crustaceans is currently hampered by their pronounced morphological bradytely, which contributed to the affirmation of the ''Cosmopolitanism Paradigm'' of freshwater taxa. However, growing evidence of the existence of cryptic diversity and molecular regionalism is available for calanoid copepods, thus stressing the need for careful morphological and molecular studies in order to soundly investigate the systematics, diversity and distribution patterns of the group.Diaptomid copepods were here chosen as model taxa, and the morphological and molecular diversity of the species belonging to the west-Mediterranean diaptomid subgenus Occidodiaptomus were investigated with the aim of comparing the patterns of morphological and molecular evolution in freshwater copepods. Three species currently lumped under the binomen Hemidiaptomus (Occidodiaptomus) ingens and two highly divergent clades within H. (O.) roubaui were distinguished, thus showing an apparent discordance between the molecular distances recorded and Occidodiaptomus morphological homogeneity, and highlighting a noteworthy decoupling between the morphological and molecular diversity in the subgenus.Current Occidodiaptomus diversity pattern is ascribed to a combined effect of ancient vicariance and recent dispersal events. It is stressed that the lack of sound calibration points for the molecular clock makes it difficult to soundly temporally frame the diversification events of interest in the taxon studied, and thus to asses the role of morphological bradytely and of accelerated molecular evolutionary rates in shaping the current diversity of the group.

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Section: Systematicsmentioning

confidence: 55%

Section: Taxon Sampling and Identificationmentioning

confidence: 99%

Overlooked cryptic endemism in copepods: Systematics and natural history of the calanoid subgenus Occidodiaptomus Borutzky 1991 (Copepoda, Calanoida, Diaptomidae)

Marrone

Brutto

Hundsdoerfer

et al. 2013

Molecular Phylogenetics and Evolution

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“…Copepod phylogeny and species identification have been proficiently carried out using molecular markers from mitochondria (partial mitochondrial cytochrome c oxidase subunit I, mtCOI; cytochrome b, Cyt b; 12S rRNA; 16S rRNA) and regions from the nuclear ribosomal cistron (18S rRNA; 28S rRNA) (for applications and reviews see e.g. Bucklin et al 2010Bucklin et al , 2011Wyngaard et al 2010Wyngaard et al , 2011Figueroa 2011;Blanco-Bercial et al 2011a,b;Hirai et al 2013;Zagoskin et al 2014). Among them, mtCOI is currently considered a gold standard for metazoan barcoding (Hebert et al 2003;Bucklin et al 2011), even though some authors have pointed out potential technical limitations in its use (Hirai et al 2013;Zagoskin et al 2014).…”

Section: Introductionmentioning

confidence: 99%

ITS2 in calanoid copepods: reconstructing phylogenetic relationships and identifying a newly introduced species in the Mediterranean

Sabia

Capua

Percopo

et al. 2017

The European Zoological Journal

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Phylogenetic inference and molecular taxonomy are becoming increasingly important approaches to classical morphological systematics and marine ecology. The number of molecular markers suitable for such goals is quite high, but general use restricts the list to a few of them, mainly mitochondrial (namely cytochrome c oxidase subunit I, COI and Cytochrome b), especially in copepods. The ribosomal cistronic regions have been widely used for broad phylogenetic analyses in different taxa. Among them, the internal transcribed spacers (ITS rDNA) are powerful tools for phylogenetic reconstructions at the different taxonomic levels, although not yet extensively used for copepods. In the present work, we tested the suitability of ITS2 rDNA marker to reconstruct the phylogenetic relationships of calanoid copepods using sequences retrieved from GenBank, complementing the phylogenetic positions of the species studied with their morphological and ecological traits. Through ITS2 rDNA we provided the first molecular evidence for the invasive calanoid Pseudodiaptomus marinus from the Mediterranean Sea (Lake Faro, Sicily, Italy), and compared it with the GenBank ITS2 sequences for P. marinus from Korea and other calanoid species. The divergence of the sequences of our P. marinus from those of Korean specimens was quite prominent (4.4%) and allowed us to hypothesise either a new forma living in the Mediterranean or a cryptic species. This study highlights the appropriateness of ITS2 for phylogenetic reconstructions and species identification, as well as for barcoding, meta-barcoding and phylogeographic approaches, and evidences the need for a more thorough knowledge of ribosomal regions in copepods from different sites.

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“…Various calanoid copepods showing plesiomorphic features, belonging to the families Boholinidae, Ridgewayiidae (now both synonyms of the family Pseudocyclopidae) and Epacteriscidae were discovered from several anchialine environments in tropical and subtropical waters around the world (e.g., Fosshagen and Iliffe 1989, 2004a, 2004bFosshagen et al 2001;Jaume and Humphreys 2001;Jaume 2003, 2012;Suárez-Morales and Iliffe 2007;Figueroa 2011;Moon and Soh 2014). However, stygobiotic Calanoida have never been recorded in Thailand to date.…”

Section: Introductionmentioning

confidence: 99%

A new species of Boholina (Crustacea, Copepoda, Calanoida) and a first record for stygobiotic calanoid fauna from a cave in Thailand

Boonyanusith¹,

Athibai²

2020

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A new species of Calanoida belonging to the genus Boholina Fosshagen & Iliffe, 1989 was found in a freshwater pool within a cave of the Satun province, South Thailand. It is the first record of the genus and of a stygobiotic representative of calanoid fauna in this country. The new species is most similar to B. crassicephala Fosshagen & Iliffe, 1989, based on position of genital pores, structures of P4 and P5 in both sexes, relative length of subapical spine vestige on the male right P5, and shape of the male left P5 endopods. However, this new species is distinguished from its known congeners by: (1) relatively longer distal outer spines on the male right P5 exopods, (2) smaller endopods of the male left P5 and (3) elongated apical spines on the distal exopodal segment of the female P4 and P5. Furthermore, the distinctive characteristic of the Thai Boholina is the presence of inner minute seta on the distal segment of the male right P5 exopod. Detailed descriptions of the new species and a key to all six known species of the genus Boholina is provided.

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Phylogenetic Analysis of Ridgewayia (Copepoda: Calanoida) from the Galapagos and of a New Species from the Florida Keys With a Reevaluation of the Phylogeny of Calanoida

Cited by 23 publications

References 45 publications

Overlooked cryptic endemism in copepods: Systematics and natural history of the calanoid subgenus Occidodiaptomus Borutzky 1991 (Copepoda, Calanoida, Diaptomidae)

Overlooked cryptic endemism in copepods: Systematics and natural history of the calanoid subgenus Occidodiaptomus Borutzky 1991 (Copepoda, Calanoida, Diaptomidae)

ITS2 in calanoid copepods: reconstructing phylogenetic relationships and identifying a newly introduced species in the Mediterranean

A new species of Boholina (Crustacea, Copepoda, Calanoida) and a first record for stygobiotic calanoid fauna from a cave in Thailand

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