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Molecular systematics of European Hyalodaphnia: the role of contemporary hybridization in ancient species.
Proc Biol Sci. 2000 Sep 22; 267(1455):1833-42.PB

Abstract

We examined phylogenetic relationships among Daphnia using mitochondrial DNA (mtDNA) sequences from the small subunit ribosomal RNA (12S), cytochrome c oxidase subunit I and nuclear DNA sequences from the first and second internal transcribed spacer representing 1612 base positions. Phylogenetic analyses using several species of the three main Daphnia subgenera, Ctenodaphnia, Hyalodaphnia and Daphnia, revealed that the Hyalodaphnia are a monophyletic sister group of the Daphnia. Most Hyalodaphnia species occur on one continent, whereas only three are found in North America and Europe. Endemicity of species is associated with variation in thermal tolerance and habitat differentiation. Although many species of the Hyalodaphnia are known to hybridize in nature, mtDNA divergence is relatively high ca. 9%) compared to other hybridizing arthropods (ca. 3%). Reproductive isolation in Daphnia seems to evolve significantly slower than genetic isolation. We related these findings to what is known about the ecology and genetics of Daphnia in order to better understand the evolutionary diversification of lineages. The relationship of these data to phylogenetic patterns is discussed in the context of speciation processes in Daphnia.

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Authors+Show Affiliations

Schwenk K
Netherlands Institute of Ecology, Centre for Limnology, Vieuwersluis. k.schwenk@zoology.uni-frankfurt.de
Posada D
No affiliation info available
Hebert PD
No affiliation info available

MeSH

AnimalsBase SequenceDNA, MitochondrialDNA, Ribosomal SpacerDaphniaElectron Transport Complex IVGenetic VariationHybridization, GeneticMolecular Sequence DataPhylogenyPolymerase Chain ReactionRNA, RibosomalSequence Analysis, DNA

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

11052533

Citation

Schwenk, K, et al. "Molecular Systematics of European Hyalodaphnia: the Role of Contemporary Hybridization in Ancient Species." Proceedings. Biological Sciences, vol. 267, no. 1455, 2000, pp. 1833-42.
Schwenk K, Posada D, Hebert PD. Molecular systematics of European Hyalodaphnia: the role of contemporary hybridization in ancient species. Proc Biol Sci. 2000;267(1455):1833-42.
Schwenk, K., Posada, D., & Hebert, P. D. (2000). Molecular systematics of European Hyalodaphnia: the role of contemporary hybridization in ancient species. Proceedings. Biological Sciences, 267(1455), 1833-42.
Schwenk K, Posada D, Hebert PD. Molecular Systematics of European Hyalodaphnia: the Role of Contemporary Hybridization in Ancient Species. Proc Biol Sci. 2000 Sep 22;267(1455):1833-42. PubMed PMID: 11052533.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular systematics of European Hyalodaphnia: the role of contemporary hybridization in ancient species. AU - Schwenk,K, AU - Posada,D, AU - Hebert,P D, PY - 2000/10/29/pubmed PY - 2001/5/5/medline PY - 2000/10/29/entrez SP - 1833 EP - 42 JF - Proceedings. Biological sciences JO - Proc Biol Sci VL - 267 IS - 1455 N2 - We examined phylogenetic relationships among Daphnia using mitochondrial DNA (mtDNA) sequences from the small subunit ribosomal RNA (12S), cytochrome c oxidase subunit I and nuclear DNA sequences from the first and second internal transcribed spacer representing 1612 base positions. Phylogenetic analyses using several species of the three main Daphnia subgenera, Ctenodaphnia, Hyalodaphnia and Daphnia, revealed that the Hyalodaphnia are a monophyletic sister group of the Daphnia. Most Hyalodaphnia species occur on one continent, whereas only three are found in North America and Europe. Endemicity of species is associated with variation in thermal tolerance and habitat differentiation. Although many species of the Hyalodaphnia are known to hybridize in nature, mtDNA divergence is relatively high ca. 9%) compared to other hybridizing arthropods (ca. 3%). Reproductive isolation in Daphnia seems to evolve significantly slower than genetic isolation. We related these findings to what is known about the ecology and genetics of Daphnia in order to better understand the evolutionary diversification of lineages. The relationship of these data to phylogenetic patterns is discussed in the context of speciation processes in Daphnia. SN - 0962-8452 UR - https://www.unboundmedicine.com/medline/citation/11052533/Molecular_systematics_of_European_Hyalodaphnia:_the_role_of_contemporary_hybridization_in_ancient_species_ DB - PRIME DP - Unbound Medicine ER -