Per Sundberg

University of Gothenburg

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Malin Strand

Swedish University of Agricultural Sciences

Urban Olsson

University of Gothenburg

Ray Gibson

Liverpool John Moores University

Per Alström

Institute of Zoology

Hiroshi Kajihara

Hokkaido University

Fredrik Pleijel

University of Gothenburg

Shichun Sun

Ocean University of China

Ulrich Technau

University of Vienna

Yehu Moran

Hebrew University of Jerusalem

Bob Zimmermann

Cornell University

Cooperative Institutions

University of Gothenburg

Swedish Museum of Natural History

Universidade de São Paulo

University of Vienna

Ocean University of China

Natural History Museum

Marine Biological Laboratory

Stockholm University

Swedish University of Agricultural Sciences

Uppsala University

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Phylogenetic Analysis of the Cytochrome P450 3 (CYP3) Gene Family

Journal of Molecular Evolution (2003)

Andrew G. McArthur Tove Hegelund Rachel Cox John J. Stegeman Mette Liljenberg

CYP3A

Subfamily

Gene cluster

Fundulus

10.1007/s00239-003-2466-x

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Citations (75)

Willi Hennig’s legacy in the Nordic countries

Cambridge University Press eBooks (2016)

Ole Seberg Torbjørn Ekrem Jaakko Hyvönen Per Sundberg

A summary is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.

10.1017/cbo9781316338797.005

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Citations (2)

Molecular Phylogeny of Some European Heteronemertean (Nemertea) Species and the Monophyletic Status ofRiseriellus, Lineus,andMicrura

Molecular Phylogenetics and Evolution (1998)

Per Sundberg Marianne Saur

Monophyly

10.1006/mpev.1998.0543

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Citations (32)

Nemertean taxonomy—Implementing changes in the higher ranks, dismissing Anopla and Enopla

Zoologica Scripta (2018)

Malin Strand Jon L. Norenburg José E. F. Alfaya Fernando Ángel Fernández‐Álvarez Håkan S. Andersson

Biological sciences

10.1111/zsc.12317

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Citations (31)

Multivariate analysis of polymorphism in the hoplonemertean Oerstedia dorsalis (Abildgaard, 1806)

Journal of Experimental Marine Biology and Ecology (1984)

Per Sundberg

Optimal distinctiveness theory

10.1016/0022-0981(84)90068-6

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Citations (21)

BUILD-UP OF THE HIMALAYAN AVIFAUNA THROUGH IMMIGRATION: A BIOGEOGRAPHICAL ANALYSIS OF THEPHYLLOSCOPUSANDSEICERCUSWARBLERS

Evolution (2007)

Ulf S. Johansson Per Alström Urban Olsson Per G. P. Ericson Per Sundberg

The Himalayan mountain range is one of the most species-rich areas in the world, harboring about 8% of the world's bird species. In this study, we compare the relative importance of immigration versus in situ speciation to the build-up of the Himalayan avifauna, by evaluating the biogeographic history of the Phylloscopus/Seicercus warblers, a speciose clade that is well represented in Himalayan forests. We use a comprehensive, multigene phylogeny in conjunction with dispersal-vicariance analysis to discern patterns of speciation and dispersal within this clade. The results indicate that virtually no speciation has occurred within the Himalayas. Instead, several speciation events are attributed to dispersal into the Himalayas followed by vicariance between the Himalayas and China/Southeast Asia. Most, perhaps all, of these events appear to be pre-Pleistocene. The apparent lack of speciation within the Himalayas stands in contrast to the mountain-driven Pleistocene speciation suggested for the Andes and the East African mountains.

Vicariance

Genetic algorithm

Early Pleistocene

10.1111/j.1558-5646.2007.00024.x

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Citations (112)

Microgeographic variation in shell characters of Littorina saxatilis Olivi-a question mainly of size?

Biological Journal of the Linnean Society (1988)

Per Sundberg

Journal Article Microgeographic variation in shell characters of Littorina saxatilis Olivi—a question mainly of size? Get access PER SUNDBERG PER SUNDBERG 1University of Göteborg, Department of Zoology, P.O. Box 250 59, S-400 31 Göteborg, Sweden Search for other works by this author on: Oxford Academic Google Scholar Biological Journal of the Linnean Society, Volume 35, Issue 2, October 1988, Pages 169–184, https://doi.org/10.1111/j.1095-8312.1988.tb00464.x Published: 14 January 2008 Article history Received: 06 December 1987 Accepted: 06 April 1988 Published: 14 January 2008

Variation (astronomy)

Littorina

10.1111/j.1095-8312.1988.tb00464.x

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Citations (39)

Character-matrix based descriptions of two new nemertean (Nemertea) species

Zoological Journal of the Linnean Society (2009)

Per Sundberg Alexei V. Chеrnyshev Hiroshi Kajihara Tobias Kånneby Malin Strand

Ribbon worms (phylum Nemertea) have traditionally been described and classified based on a combination of internal and external morphological characters.The extent, and wealth of details, of these descriptions vary both over time and amongst authors.In addition, definitions of characters and character states are in many cases vague, causing problems both for identification and in phylogenetic analyses.Here, we suggest a system of describing nemerteans based on a list of characters and their states with the actual description in the form of a vector of character state symbols.We argue that this system makes it easier for other systematists to extract the necessary characters/character states for comparative and phylogenetic analyses.The proposed list of characters can also act as a checklist for nemertean description, whereby hopefully ambiguities (such as does the nonmentioning of a character actually mean 'missing' or just not looked for) can be avoided in the future.We describe two new species and one new genus Carinina ochracea sp.nov.and Raygibsonia bergi gen.et sp.nov.using this concept in combination with molecular analyses based on 18S and cytochrome oxidase I (COI) DNA sequences.

Matrix (chemical analysis)

10.1111/j.1096-3642.2008.00514.x

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Citations (37)

A Transcriptomic Approach to Ribbon Worm Systematics (Nemertea): Resolving the Pilidiophora Problem

Molecular Biology and Evolution (2014)

Sónia C. S. Andrade Horácio Montenegro Malin Strand Megan L. Schwartz Hiroshi Kajihara

Resolving the deep relationships of ancient animal lineages has proven difficult using standard Sanger-sequencing approaches with a handful of markers. We thus reassess the relatively well-studied phylogeny of the phylum Nemertea (ribbon worms)—for which the targeted gene approaches had resolved many clades but had left key phylogenetic gaps—by using a phylogenomic approach using Illumina-based de novo assembled transcriptomes and automatic orthology prediction methods. The analysis of a concatenated data set of 2,779 genes (411,138 amino acids) with about 78% gene occupancy and a reduced version with 95% gene occupancy, under evolutionary models accounting or not for site-specific amino acid replacement patterns results in a well-supported phylogeny that recovers all major accepted nemertean clades with the monophyly of Heteronemertea, Hoplonemertea, Monostilifera, being well supported. Significantly, all the ambiguous patterns inferred from Sanger-based approaches were resolved, namely the monophyly of Palaeonemertea and Pilidiophora. By testing for possible conflict in the analyzed supermatrix, we observed that concatenation was the best solution, and the results of the analyses should settle prior debates on nemertean phylogeny. The study highlights the importance, feasibility, and completeness of Illumina-based phylogenomic data matrices.

Monophyly

Supermatrix

Phylogenomics

Supertree

10.1093/molbev/msu253

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Citations (72)

Phylogeny, natural groups and nemertean classification

Springer eBooks (1993)

Per Sundberg

10.1007/978-94-011-2052-4_8

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Citations (22)