Emiliano Dell'Ampio
University of Vienna
Publications 9
#1Emiliano Dell'Ampio (University of Vienna)H-Index: 8
#2Karen Meusemann (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 21
Last.Bernhard MisofH-Index: 40
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Phylogenetic relationships of the primarily wingless insects are still considered unresolved. Even the most comprehensive phylogenomic studies that addressed this question did not yield congruent results. To get a grip on these problems, we here analyzed the sources of incongruence in these phylogenomic studies by using an extended transcriptome data set. Our analyses showed that unevenly distributed missing data can be severely misleading by inflating node support despite the absence of phyloge...
80 CitationsSource
#2Ronald A. Jenner (Natural History Museum)H-Index: 21
Last.Bernhard MisofH-Index: 40
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Remipedes are a small and enigmatic group of crustaceans, first described only 30 years ago. Analyses of both morphological and molecular data have recently suggested a close relationship between Remipedia and Hexapoda. If true, the remipedes occupy an important position in pancrustacean evolution and may be pivotal for understanding the evolutionary history of crustaceans and hexapods. However, it is important to test this hypothesis using new data and new types of analytical approaches. Here, ...
161 CitationsSource
Last.Günther PassH-Index: 20
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4 Citations
Last.Günther PassH-Index: 20
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The present analyses employ the almost complete sequence of the 28S rRNA gene to investigate phylogenetic relationships among Pancrustacea, placing special emphasis on the position of basal hexapod lineages. This study utilizes a greater number of characters and taxa of Protura, Collembola and Diplura than previous analyses to focus on conflicts in the reconstruction of the early steps in hexapod evolution. Phylogenetic trees are mainly based on Bayesian approaches, but likewise include analyses...
26 CitationsSource
#2Karen MeusemannH-Index: 21
Last.Bernhard Misof (UHH: University of Hamburg)H-Index: 40
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Whenever different data sets arrive at conflicting phylogenetic hypotheses, only testable causal explanations of sources of errors in at least one of the data sets allow us to critically choose among the conflicting hypotheses of relationships. The large (28S) and small (18S) subunit rRNAs are among the most popular markers for studies of deep phylogenies. However, some nodes supported by this data are suspected of being artifacts caused by peculiarities of the evolution of these molecules. Arth...
103 CitationsSource
#1Emiliano Dell'Ampio (UNISI: University of Siena)H-Index: 8
#2Antonio Carapelli (UNISI: University of Siena)H-Index: 21
Last.Francesco Frati (UNISI: University of Siena)H-Index: 30
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Summary A fragment of the 28S rRNA encompassing the divergent domains D1-D5 was sequenced in 14 species of Collembola Neanuridae, 12 of which belong to the subfamily Neanurinae. A slight length variation across taxa was found in the D2, D3 and D5 divergent domains, the core regions being very conserved in length and sequence. Nucleotide composition was slightly biased towards As and Ts (55.6%), with the bias being more evident in the nucleotides not involved in pairing with complementary sequenc...
8 CitationsSource
#1Francesco Frati (UNISI: University of Siena)H-Index: 30
#2Emiliano Dell'Ampio (UNISI: University of Siena)H-Index: 8
Last.Pietro Paolo Fanciulli (UNISI: University of Siena)H-Index: 13
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The phylogenetic position of two putative new species of the collembolan genus Orchesella was investigated by comparison with four other Italian species of the genus using a fragment of the mitochondrial gene encoding for subunit I of cytochrome c oxidase (COI). The gene showed the well-known A + T bias, typical of insect mitochondrial DNA, although A + T content was not as high as that observed in species belonging to more derived insect orders. The large number of variable sites in 3rd codon p...
34 CitationsSource
#1Francesco Frati (UNISI: University of Siena)H-Index: 30
#2Emiliano Dell'Ampio (UNISI: University of Siena)H-Index: 8
Summary The nuclear 28S rRNA and the mitochondrial COII gene were used to establish phylogenetic relationships among species of the family Neanuridae, with special emphasis on species of the subfamily Neanurinae. Phylogenetic analysis was conducted using genetic distances, parsimony and likelihood methods. The D3-D5 fragment of the rRNA gene was very conserved, both in sequence and in secondary structure features. This fragment supplied little information on relationships at this level. The phyl...
18 CitationsSource
#1Francesco Frati (UNISI: University of Siena)H-Index: 30
#2Pietro Paolo Fanciulli (UNISI: University of Siena)H-Index: 13
Last.Romano Dallai (UNISI: University of Siena)H-Index: 37
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Abstract The mitochondrial COII gene was shown to be a useful marker at the population level in Isotoma klovstadi, and for studying phylogenetic relationships at the family level, while the nuclear EF‐lα and 28S rRNA genes were less useful. The populations of I. klovstadi from four collecting sites in North Victoria Land appeared to be fairly isolated from one another, with the exception of one population which has probably been influenced by immigrants from others. The position of Friesea grise...
11 CitationsSource