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Mwabvu, T.; Lamb, J.; Slotow, R.; Hamer, M.; Barraclough, D. (2015). Do cytochrome c oxidase 1 gene sequences differentiate species of spirostreptid millipedes (Diplopoda: Spirostreptida: Spirostreptidae)?. African Invertebrates. 56 (3): 651-661.
285688
10.5733/afin.056.0311 [view]
urn:lsid:zoobank.org:pub:44A0F313-09DA-484D-900E-EF0DBC33A47F [view]
Mwabvu, T.; Lamb, J.; Slotow, R.; Hamer, M.; Barraclough, D.
2015
Do cytochrome c oxidase 1 gene sequences differentiate species of spirostreptid millipedes (Diplopoda: Spirostreptida: Spirostreptidae)?
African Invertebrates
56 (3): 651-661
Publication
CIM-ID: 17117
The aim of this study was to use cytochrome c oxidase 1 (CO1) sequences to recover a phylogeny for seven morphologically described spirostreptid millipede taxa from southern Africa, and to evaluate the correspondence between morphological and molecular phylogenies. Genetic p-distance generally increased with taxonomic divergence: inter-specific mean 15.33 % (14.09 %–17.02 %), inter-generic mean 18.43 % (6.83 %–26.81 %) and inter-order mean 24.16 % (range 18.56 %–30.77 %). Congruent Bayesian, maximum parsimony and neighbour-joining analyses of 520 nucleotides of the CO1 gene resolved the orders Spirostreptida, Julida and Callipodida. Members of genera within the Spirostreptidae (Archispirostreptus, Bicoxidens, Cacuminostreptus, Doratogonus, Orthoporoides, Plagiotaphrus and Spirostreptus) formed a single clade within which a sample of Thyropygus (family Harpagophoridae) was paraphyletically nested. Phylogenetic analyses failed to recover support for the genera Doratogonus, Bicoxidens, Archispirostreptus and Spirostreptus, as representatives of these genera were not monophyletic. Samples morphologically identified as the same species (Bicoxidens flavicollis) were part of two different clades, one of which was well supported and otherwise contained members of Doratogonus. This high level of divergence (mean 12.64 %) between morphologically identified spirostreptid millipede sister species could indicate that changes in genital morphology occur rather slowly relative to CO1 sequence substitution, and may underestimate species diversity.
South Africa
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Date
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2017-10-11 15:29:18Z
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2023-06-26 10:26:03Z
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2023-10-09 12:40:35Z
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