Higher Level Relationships of Leeches (Annelida: Clitellata: Euhirudinea) Based on Morphology and Gene Sequences

Apakupakul, Kathleen; Siddall, Mark E.; Burreson, Eugene M.

doi:10.1006/mpev.1999.0639

Cited by 236 publications

(184 citation statements)

References 26 publications

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“…The cladogram from the combined data set of two nuclear genes (12S and 28S) and mitochondrial COI strongly corroborates H. ottae as a previously undescribed haemopid species, and further resolves other ambiguous relationships within the genus Haemopis. For example, the monophyly of Haemopis is strongly supported and the tree topology agrees with higher level taxonomic analyses (Borda and Siddall, 2004a;Borda and Siddall, 2004b;Apakupakul et al, 1999). kingi) further supports terrestrialism as a synapomorphy within the genus.…”

Section: Evolutionary Considerationssupporting

confidence: 71%

A new species of Haemopis (Annelida: Hirudinea): Evolution of North American terrestrial leeches

Wirchansky

Shain

2010

Molecular Phylogenetics and Evolution

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Section: Evolutionary Considerationssupporting

confidence: 71%

A new species of Haemopis (Annelida: Hirudinea): Evolution of North American terrestrial leeches

Wirchansky

Shain

2010

Molecular Phylogenetics and Evolution

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“…However, there was strong support for a sister relationship between Acanthobdellida and euhirudinids, which has been corroborated by morphological evidence (Purschke et al 1993;Brinkhurst 1999a;Ferraguti & Erse¨us 1999) but challenged by other classi¢cations (Brusca & Brusca 1990;Siddall & Burreson 1998;Apakupakul et al 1999). In the COI-based phylogeny of Siddall & Burreson (1998), Acanthobdellida was the sister taxon to a branchiobdellidans plus leech clade.…”

Section: (B) Phylogenetic Relationships Within the Clitellatamentioning

confidence: 94%

“…No leeches were discarded from the ¢nal alignment since they constitute a homogeneous cluster of long-branched taxa, leaving no possibility of eliminating possible biases due to long-branch attraction. The new sequence of Acanthobdella peledina (Apakupakul et al 1999) (AF115978) was also removed from subsequent analyses, as its aberrant clustering with a mollusc (Acanthopleura japonica), which was far removed from the other representative of the species (Trontelj et al 1999) (AF099948), as well as from all other clitellates, strongly suggested that the sequence available from the EMBL databank is inaccurate.…”

Section: (D) Phylogenetic Analysesmentioning

confidence: 99%

On the origin of the Hirudinea and the demise of the Oligochaeta

Martin

2001

Proc. R. Soc. Lond. B

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The phylogenetic relationships of the Clitellata were investigated with a data set of published and new complete 18S rRNA gene sequences of 51 species representing 41 families. Sequences were aligned on the basis of a secondary structure model and analysed with maximum parsimony and maximum likelihood. In contrast to the latter method, parsimony did not recover the monophyly of Clitellata. However, a close scrutiny of the data suggested a spurious attraction between some polychaetes and clitellates. As a rule, molecular trees are closely aligned with morphology-based phylogenies. Acanthobdellida and Euhirudinea were reconciled in their traditional Hirudinea clade and were included in the Oligochaeta with the Branchiobdellida via the Lumbriculidae as a possible link between the two assemblages. While the 18S gene yielded a meaningful historical signal for determining relationships within clitellates, the exact position of Hirudinea and Branchiobdellida within oligochaetes remained unresolved. The lack of phylogenetic signal is interpreted as evidence for a rapid radiation of these taxa. The placement of Clitellata within the Polychaeta remained unresolved. The biological reality of polytomies within annelids is suggested and supports the hypothesis of an extremely ancient radiation of polychaetes and emergence of clitellates.

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“…Methods of leech DNA extraction, COX1 amplification and sequencing have been described elsewhere (Apakupakul et al 1999;Borda and Siddall 2004). Sequences of 42 species of Helobdella from previous studies were also included in the present analyses for comparative purposes.…”

Section: Specimen Collectionmentioning

confidence: 99%

DNA barcoding reveals Mexican diversity within the freshwater leech genusHelobdella(Annelida: Glossiphoniidae)

2010

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We investigated the genetic distances and taxonomic status among species of Helobdella, a genus of non-blood-feeding leeches, based on mitochondrial cytochrome c oxidase subunit I sequences. Sampling included 20 specimens representing nine nominal species collected in 11 states in Mexico as well as previously published sequences of different species of Helobdella from several places. A neighbor-joining tree, as well as identification of diagnostic nucleotides, was used to suggest the presence of seven species of Helobdella in Mexico including potentially two undescribed forms.

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Higher Level Relationships of Leeches (Annelida: Clitellata: Euhirudinea) Based on Morphology and Gene Sequences

Cited by 236 publications

References 26 publications

A new species of Haemopis (Annelida: Hirudinea): Evolution of North American terrestrial leeches

A new species of Haemopis (Annelida: Hirudinea): Evolution of North American terrestrial leeches

On the origin of the Hirudinea and the demise of the Oligochaeta

DNA barcoding reveals Mexican diversity within the freshwater leech genusHelobdella(Annelida: Glossiphoniidae)

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