| 1. |
- Norlinder, Erika, 1977, et al.
(författare)
-
Phylogeny of scale-worms (Aphroditiformia, Annelida), assessed from 18SrRNA, 28SrRNA, 16SrRNA, mitochondrial cytochrome c oxidase subunit I (COI), and morphology
- 2012
-
Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier BV. - 1055-7903. ; 65:2, s. 490-500
-
Tidskriftsartikel (refereegranskat)abstract
- The phylogeny of scale-worms, benthic polychaetes carrying dorsal scales (elytra), including taxa from Acoetidae, Aphroditidae, Eulepethidae, Pholoidae, Pholoididae, Polynoidae and Sigalionidae (Aphroditiformia), is assessed from the nuclear markers 18SrRNA and 28SrRNA, and mitochondrial 16SrRNA and cytochrome c oxidase subunit I (COI), and 24 morphological characters. The data sets are analyzed both separately and combined, with Bayesian analyses, maximum likelihood and parsimony. In total, 56 terminal taxa are examined, including 48 taxa from all scale-worm families, and eight out-group species. The results indicate that Aphroditidae and Eulepethidae are the most basally placed families among the scale-worms. The Pholoididae and Pisionidae are positioned within and synonymized with the Sigalionidae, and Pholoidae may be part of the same group. The subfamily Iphioninae falls out as sister group to a clade consisting of Polynoidae and Acoetidae and is elevated to Iphionidae. The families now included in the Aphroditiformia are Acoetidae, Aphroditidae, Eulepethidae, Pholoidae, Polynoidae, Iphionidae and Sigalionidae, and the subfamily name Harmothoinae and Acholoinae are treated as a junior synonyms of Polynoinae. (C) 2012 Published by Elsevier Inc.
|
|
| 2. |
- Nygren, Arne, 1971, et al.
(författare)
-
Bertil Åkesson (1928-2013) obituary.
- 2014
-
Ingår i: Memoires of Museum Victoria. - 1447-2546 .- 1447-2554. ; 71, s. 343-345
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
|
|
| 3. |
- Pleijel, Fredrik, 1955, et al.
(författare)
-
Vrijenhoekia balaenophila, a new hesionid polychaete from a whale fall off CaliforniaVrijenhoekia balaenophila, a new hesionid polychaete from a whale fall off California
- 2008
-
Ingår i: Zoological Journal of the Linnean Society. - : Oxford University Press (OUP). - 0024-4082 .- 1096-3642. ; 152:4, s. 625-634
-
Tidskriftsartikel (refereegranskat)abstract
- Vrijenhoekia balaenophila gen. nov., sp. nov. (Polychaeta, Hesionidae) is described from a whale carcass at near 3000 m depth in Monterey Canyon off the coast of California. The phylogenetic relationships of V. balaenophila are assessed in a parsimony analysis of morphological data together with nucleotide data from 28S rDNA, 16S rDNA and cytochrome oxidase I genes. Within the hesionids V. balaenophila belongs to Psamathini, where it is the sister group to Sirsoe. Among psamathins it is morphologically distinguished by having six glandular lip pads around the mouth opening, papilla-shaped neuropodial lobes on segment 3, extreme length of the dorsal cirri, and by a characteristic growth pattern in which the maximum number of segments is already formed in subadults, and further growth takes place through size increase of the segments.
|
|
| 4. |
- Ravara, A., et al.
(författare)
-
Phylogenetic relationships within Nephtyidae (Polychaeta, Annelida)
- 2010
-
Ingår i: Zoologica Scripta. - : Wiley. - 0300-3256 .- 1463-6409. ; 39:4, s. 394-405
-
Tidskriftsartikel (refereegranskat)abstract
- We present the first phylogeny of nephtyids, a common, soft-bottom living polychaete family comprising five genera and over 100 species. Characters used to distinguish nephtyid genera are a matter of controversy and considerable confusion remains as to the generic delineations. The phylogeny is estimated with molecular data from the mitochondrial genes cytochrome oxidase I and 16S rDNA, the nuclear genes 18S rDNA and 28S rDNA and morphological data. The results reveal two well-supported major clades, corresponding in part to the two main genera of the family, Aglaophamus and Nephtys. The species Nephtys pulchra and Nephtys australiensis are transferred to Aglaophamus, and new diagnoses for the genera are provided. Dentinephtys is synonymized with Nephtys, and Nephtys cornuta is sister to the remaining nephtyids and is referred to the new genus Bipalponephtys, together with Nephtys danida and Micronephthys neotena. Micronephthys is sister to Nephtys and Inermonephtys is of uncertain position.
|
|
| 5. |
- Ruta, C., et al.
(författare)
-
Phylogeny of Hesionidae (Aciculata, Polychaeta), assessed from morphology, 18S rDNA, 28S rDNA, 16S rDNA and COI
- 2007
-
Ingår i: Zoologica Scripta. - : Wiley. - 0300-3256 .- 1463-6409. ; 36:1, s. 99-107
-
Tidskriftsartikel (refereegranskat)abstract
- We assess phylogenetic relationships within the polychaete family Hesionidae from morphological data combined with nucleotide data from 18S rDNA, 28S rDNA, 16S rDNA and COI. Parsimony and Bayesian analyses were performed on two data sets; the first was based on a more restricted set of terminals with both morphological and molecular data (17 ingroup terminals), while the second included additional taxa with morphological data only (25 ingroup terminals). The different sets of terminals yielded fully congruent results, as did the parsimony and the Bayesian analyses. Our results indicate high levels of homoplasy in traditionally used morphological characters in the group, and that Hesioninae, Gyptini and Gyptis are nonmonophyletic. Hesionini (mainly Hesione and Leocrates), Psamathini (mainly Hesiospina, Micropodarke, Nereimyra, Psamathe and Syllidia), Ophiodrominae (Gyptini and Ophiodromini) and Ophiodromini (mainly Heteropodarke, Ophiodromus and Podarkeopsis) are monophyletic and agree with previous classifications, and Hesionini is probably the sister to all other hesionids. The placements of the small hesionids capricornia and Lizardia, the hydrothermal vent taxa Hesiodeira and Hesiolyra, and the newly described Hesiobranchia, remain uncertain.
|
|
| 6. |
- Wiklund, Helena, 1965, et al.
(författare)
-
Phylogeny of Aphroditiformia (Polychaeta) based on molecular and morphological data
- 2005
-
Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier BV. - 1055-7903. ; 37:2, s. 494-502
-
Tidskriftsartikel (refereegranskat)abstract
- The phylogeny of Aphroditiformia, benthic polychaetes carrying dorsal elytra, is assessed from nuclear 18S rDNA, mitochondrial cytochrome c oxidase subunit I (COI), and 31 morphological characters. Two non-elytrabearing taxa, Palmyra and Pisione, are included to assess their relationship to the elytrabearers. The data are analysed both separately and combined, with parsimony, maximum likelihood and Bayesian analyses. In total, 19 terminal taxa are examined, including 12 elytrabearing taxa from all scale-worm groups, Palmyra, Pisione, and five outgroup taxa. The results show that Palmyra and Pisione are nested within Aphroditiformia. Palmyra is sister to Aphrodita, and both Pisione and Pholoe are positioned within Sigalionidae, suggesting that both family names Pisionidae and Pholoidae should be treated as junior synonyms of Sigalionidae. (c) 2005 Elsevier Inc. All rights reserved.
|
|
| 7. |
- Wiklund, Helena, 1965, et al.
(författare)
-
The phylogenetic relationships between Amphinomidae, Archinomidae and Euphrosinidae (Amphinomida: Aciculata: Polychaeta), inferred from molecular data
- 2008
-
Ingår i: Journal of the Marine Biological Association of the UK. - 0025-3154. ; 88:3, s. 509-513
-
Tidskriftsartikel (refereegranskat)abstract
- Amphinomida is an ‘isolated’ clade within the polychaete group Aciculata and traditionally includes the families Amphinomidae, Archinomidae and Euphrosinidae. Archinomidae were erected for a single species, the hydrothermal vent polychaete Archinome rosacea. Originally, A. rosacea was assigned to Euphrosinidae although it shares more morphological similarities with Amphinomidae. In this study we assess the position of Archinome, Euphrosinidae and Amphinomidae by using molecular data from nuclear 18S rDNA and 28S rDNA. Parsimony, maximum likelihood and Bayesian analyses are performed on the nucleotide datasets covering in total 19 terminals from Amphinomidae, Euphrosinidae, Archinomidae and outgroups. Our results conclusively show that Euphrosinidae and Amphinomidae are sister taxa and that Archinome is sister to Chloeia within Amphinomidae. Based on these results the family name Archinomidae is treated as a junior synonym of Amphinomidae.
|
|
| 8. |
- Zhang, Yanjie, et al.
(författare)
-
Phylogeny, evolution and mitochondrial gene order rearrangement in scale worms (Aphroditiformia, Annelida)
- 2018
-
Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier BV. - 1055-7903 .- 1095-9513. ; 125, s. 220-231
-
Tidskriftsartikel (refereegranskat)abstract
- © 2018 Elsevier Inc. Next-generation sequencing (NGS) has become a powerful tool in phylogenetic and evolutionary studies. Here we applied NGS to recover two ribosomal RNA genes (18S and 28S) from 16 species and 15 mitochondrial genomes from 16 species of scale worms representing six families in the suborder Aphroditiformia (Phyllodocida, Annelida), a complex group of polychaetes characterized by the presence of dorsal elytra or scales. The phylogenetic relationship of the several groups of scale worms remains unresolved due to insufficient taxon sampling and low resolution of individual gene markers. Phylogenetic tree topology based on mitochondrial genomes is comparable with that based on concatenated sequences from two mitochondrial genes (cox1 and 16S) and two ribosomal genes (18S and 28S) genes, but has higher statistical support for several clades. Our analyses show that Aphroditiformia is monophyletic, indicating the presence of elytra is an apomorphic trait. Eulepethidae and Aphroditidae together form the sister group to all other families in this suborder, whereas Acoetidae is sister to Iphionidae. Polynoidae is monophyletic, but within this family the deep-sea subfamilies Branchinotogluminae and Macellicephalinae are paraphyletic. Mitochondrial genomes in most scale-worm families have a conserved gene order, but within Polynoidae there are two novel arrangement patterns in the deep-sea clade. Mitochondrial protein-coding genes in polynoids as a whole have evolved under strong purifying selection, but substitution rates in deep-sea species are much higher than those in shallow-water species, indicating that purifying selection is relaxed in deep-sea polynoids. There are positive selected amino acids for some mitochondrial genes of the deep-sea clade, indicating they may involve in the adaption of deep-sea polynoids. Overall, our study (1) provided more evidence for reconstruction of the phylogeny of Aphroditiformia, (2) provided evidence to refute the assumption that mitochondrial gene order in Errantia is conserved, and (3) indicated that the deep-sea extreme environment may have affected the mitochondrial genome evolution rate and gene order arrangement in Polynoidae.
|
|
