2005
DOI: 10.1093/molbev/msi148
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The Phylogenetic Positions of Three Basal-Hexapod Groups (Protura, Diplura, and Collembola) Based on Ribosomal RNA Gene Sequences

Abstract: This study combined complete 18S with partial 28S ribosomal RNA gene sequences ( approximately 2,000 nt in total) to investigate the relations of basal hexapods. Ten species of Protura, 12 of Diplura, and 10 of Collembola (representing all subgroups of these three clades) were sequenced, along with 5 true insects and 8 other arthropods, which served as out-groups. Trees were constructed with maximum parsimony, maximum likelihood, Bayesian analysis, and minimum-evolution analysis of LogDet-transformed distances… Show more

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Cited by 90 publications
(93 citation statements)
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“…Odonata evolve more slowly than their neighbours in the tree. Ribosomal RNA analyses frequently recover Nonoculata [74,75,107,117,239,[242][243][244][245] Chiastomyaria [117,141,239], Dermaptera sister to Plecoptera [107,117,239], and mecopteran paraphyly [74,75,77,107,117,141,246]. The consistency of these results despite the differences in alignment and optimality criteria indicate that rRNA supports these relationships when analysed with existing methods, even though much larger datasets now contradict Nonoculata and mecopteran paraphyly.…”
Section: The Dominance Of Ribosomal Rnamentioning
confidence: 92%
“…Odonata evolve more slowly than their neighbours in the tree. Ribosomal RNA analyses frequently recover Nonoculata [74,75,107,117,239,[242][243][244][245] Chiastomyaria [117,141,239], Dermaptera sister to Plecoptera [107,117,239], and mecopteran paraphyly [74,75,77,107,117,141,246]. The consistency of these results despite the differences in alignment and optimality criteria indicate that rRNA supports these relationships when analysed with existing methods, even though much larger datasets now contradict Nonoculata and mecopteran paraphyly.…”
Section: The Dominance Of Ribosomal Rnamentioning
confidence: 92%
“…Molecular data do not support the monophyletic taxon Entognatha (Protura, Collembola and Diplura), and instead indicate a position for Collembola outside of Insecta (Nardi et al 2003;Kjer 2004;Giribet et al 2004; 123 Regier et al 2004;Carapelli et al 2006), while Protura seem to be related to Diplura (Wheeler et al 2001;Luan et al 2005;Kjer et al 2006;Mallat and Giribet 2006;Dell'Ampio et al 2009) to form the taxon Nonoculata. However, based on embryological results, Fukui and Machida (2006) and Machida (2006) agree that Entognatha are not a monophyletic taxon and that Protura are neither related to Collembola nor to Diplura, but hypothesize instead that they have some aYnity with Myriapoda or Crustacea.…”
Section: Introductionmentioning
confidence: 94%
“…Recently, however, molecular data have proposed a new scenario, with Collembola outside Insecta (Nardi et al 2003;Giribet et al 2004;Kjer et al 2006;Regier et al 2004) and Diplura closely related to Protura (Giribet et al 2004;Luan et al 2005;Kjer et al 2006;Mallat and Giribet 2006;Dell'Ampio et al 2009). From a spermatological point of view, the earlier data agree with the peculiarities of the collembolan sperm (Dallai et al 2004): the proposal based on molecular data is more diYcult to accept, as Diplura have an insect-type sperm with a 9 + 2 Xagellar axoneme surrounded by 9 accessory microtubules ( Table 1).…”
Section: Sperm Windingmentioning
confidence: 99%
“…The 18S rDNA gene fragments were amplified in a standard PCR (polymerase chain reaction) using 50 ng isolated genomic DNA, GoTaq ® polymerase (Promega, Mannheim/Germany) and primer set 18S_FW (5'-AGGAATTGACGGAAGGGCAC-3') and 18S_RV (5'-GGACATCTAAGGGCAT-CACA-3') (Luan et al 2005). Reaction mixtures were incubated in a PT-100 thermal cycler ® (MJ Research Inc., Waltham, USA) at 94 C for 5 min, followed by 30 cycles at 94 C for 30 s, 50 C for 45 s, and 72 C for 30 s, resulting in a 324 bp PCR fragment.…”
Section: Isolation Of Genomic Dna and 18s Rdna Analysismentioning
confidence: 99%