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Speciation and phylogeography in the cosmopolitan marine moon jelly, Aurelia sp
Open accessAbstract
BACKGROUND: The cosmopolitan moon jelly Aurelia is characterized by high degrees of morphological and ecological plasticity, and subsequently by an unclear taxonomic status. The latter has been revised repeatedly over the last century, dividing the genus Aurelia in as many as 12 or as little as two species. We used molecular data and phenotypic traits to unravel speciation processes and phylogeographic patterns in Aurelia. RESULTS: Mitochondrial and nuclear DNA data (16S and ITS-1/5.8S rDNA) from 66 world-wide sampled specimens reveal star-like tree topologies, unambiguously differentiating 7 (mtDNA) and 8 (ncDNA) genetic entities with sequence divergences ranging from 7.8 to 14% (mtDNA) and 5 to 32% (ncDNA), respectively. Phylogenetic patterns strongly suggest historic speciation events and the reconstruction of at least 7 different species within Aurelia. Both genetic divergences and life history traits showed associations to environmental factors, suggesting ecological differentiation forced by divergent selection. Hybridization and introgression between Aurelia lineages likely occurred due to secondary contacts, which, however, did not disrupt the unambiguousness of genetic separation. CONCLUSIONS: Our findings recommend Aurelia as a model system for using the combined power of organismic, ecological, and molecular data to unravel speciation processes in cosmopolitan marine organisms.
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“Schroth et al. (2002) defined the ARAB lineage with specimens from the Red Sea and from the Persian Gulf, the latter indicated as the type locality for Aurelia dubia.”
From The importance of molecular characters when morphological variability hinders diagnosability: systematics of the moon jellyfish genus Aurelia (Cnidaria: Scyphozoa) (2021) · cites this paper as Schroth et al., 2002
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“Only one specimen of A. aurita is from the Northwest Pacific, reported from Armani et al. (2013), from a northwestern Pacific sample that is also present in Schroth et al. (2002).”
From The importance of molecular characters when morphological variability hinders diagnosability: systematics of the moon jellyfish genus Aurelia (Cnidaria: Scyphozoa) (2021) · cites this paper as Schroth et al. (2002)
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“The 16S sequence these authors posted in GenBank from the LIM lineage, which they consider A. limbata, belongs to the Mljet lakes, Croatia, and therefore in our 16S phylogeny is part of the A. relicta clade (Fig. S4).”
From The importance of molecular characters when morphological variability hinders diagnosability: systematics of the moon jellyfish genus Aurelia (Cnidaria: Scyphozoa) (2021) · cites this paper as Schroth et al. (2002)
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Metadata
- Authors
- Schroth, W., Jarms, G., Streit, B., & Schierwater, B.
- Affiliations
- Goethe University Frankfurt (DE)
- Universität Hamburg (DE)
- Corresponding author
- Schierwater, Bernd
- Venue
- BMC Evolutionary Biology
- Published
- 2002-01-02
- Volume
- 2
- Issue
- 1
- Pages
- 1-1
- ISSN
- 1471-2148 (ISSN-L)
- PMC
- PMC64640
- OpenAlex
- W2161599300
- Cited by
- 224
- References
- 51
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 3 · 2023: 12 · 2022: 7 · 2021: 13 · 2020: 7 · 2019: 8 · 2018: 6 · 2017: 9 · 2016: 12 · 2015: 18 · 2014: 12 · 2013: 9 · 2012: 11
- FWCI
- 9.21
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- BMC Evolutionary Biology (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, other-oa)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Publication Server of Goethe University Frankfurt am Main (Goethe University Frankfurt) (submittedVersion)
- Funders
- Deutsche Bundesstiftung Umwelt
- Deutsche Forschungsgemeinschaft
- Topics
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Marine Invertebrate Physiology and Ecology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Invertebrate Taxonomy and Ecology
- Keywords
- Aurelia, speciation, phylogeography, species delimitation, genetic divergence, morphological plasticity, life-history traits, hybridization, introgression, jellyfish taxonomy
- MeSH terms
- Animals, Cell Nucleus, DNA, Mitochondrial, Ecology, Geography, Haplotypes, Molecular Sequence Data, Phenotype, Phylogeny, RNA, Ribosomal, 16S, Selection, Genetic, Genetic Variation, Evolution, Molecular, DNA, Ribosomal Spacer, Scyphozoa
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