Cited by 226Marine Invertebrate Physiology and EcologyGenetic diversity and population structureInvertebrate Taxonomy and Ecology

Speciation and phylogeography in the cosmopolitan marine moon jelly, Aurelia sp

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Schroth, Werner, Jarms, Gerhard, Streit, Bruno, Schierwater, Bernd·2002·BMC Evolutionary Biology

Abstract

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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Crossref · 10.1186/1471-2148-2-1

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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.

    “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 <i>Aurelia</i> (Cnidaria: Scyphozoa) (2021) · cites this paper as Schroth et al., 2002

    The Discussion (Phylogenetic patterns and speciation; page unavailable) treats the Red Sea and Arabian Gulf specimens as separate clades, contrary to the claim that both defined ARAB. The Results (mtDNA variation, Table 2; page unavailable) lists ARAB separately from TET and labels ARAB as an unidentified Aurelia species. Our copy does not identify the Persian Gulf as the type locality of Aurelia dubia. (LLM, conf=0.86)

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  • Only one specimen of A. aurita is from the Northwest Pacific, reported from Armani et al. (2013).

    “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 <i>Aurelia</i> (Cnidaria: Scyphozoa) (2021) · cites this paper as Schroth et al. (2002)

    The Animal samples section (page unavailable) confirms that Schroth et al. included one North-Western Pacific sample, but identifies it as A. limbata, not A. aurita. The paper predates Armani et al. (2013), so our copy cannot establish that the specimen reported there is the same sample. (LLM, conf=0.85)

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  • The 16S sequence posted in GenBank from the LIM lineage by Schroth et al. (2002), which they considered A. limbata, belongs to the Mljet lakes, Croatia, and in the paper's 16S phylogeny is part of the A. relicta clade.

    “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).”

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Research works printed but not linked: 3

  1. Mayer AG The Scyphomedusae. Medusae of the world, vol. 3. pp. 603–630. Washington, D.C.: Carnegie Institution of Washington; 1910
  2. Russell FS The medusae of the British Isles. New York: Cambridge University Press 1970
  3. Schierwater B Die Bedeutung von DNA-Merkmalen für die Analyse phylogenetischer Beziehungen innerhalb der Cnidaria. Morphologie & Evolution Edited by Gutman WF, Mollenhauer D, Peters DS. pp. 435–442. Frankfurt/M: J. Senck. Naturf. Ges. Kramer Verlag; 1994

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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)
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
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
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › 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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