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Journal article
A molecular assessment of species boundaries and relationships in the Australian brine shrimp Parartemia (Anostraca: Parartemiidae)
Invertebrate systematics, Vol.38(11), IS24044
2024
Abstract
Australian salt lakes contain a diverse range of endemic invertebrates. The brine shrimp Parartemia is among the most speciose and salt-tolerant of these invertebrates. The morphotaxonomy of Parartemia is well established but there has only been limited molecular assessment of the phylogenetic relationships and boundaries of the morphospecies. We used multiple genetic markers (nuclear 28S and mitochondrial 16S and COI ) and tree-building methods (Bayesian inference and maximum likelihood) to investigate the phylogeny of Parartemia . We also used species delimitation methods to test the validity of morphological species designations. The data set included all but 2 of the 18 described Parartemia morphospecies, collected from a total of 93 sites from across southern Australia plus some sequences from GenBank. The results identified large amounts of molecular divergence (e.g. COI P- values of up to 25.23%), some groups of closely related species (which also usually shared some morphological similarities) and some distinctive species, although the relationships among divergent lineages were generally not well resolved. The most conservative set of results from the species delimitation analyses suggests that the morphotaxonomy is largely accurate, although many morphospecies comprised divergent genetic lineages separated by COI P- values of up to 17.02%. Two putative new morphospecies, three cryptic species and one synonymy were identified. Our findings improve the knowledge of Parartemia taxonomy and will facilitate the development of future studies and conservation of this taxon.Australian salt lakes contain a diverse range of endemic invertebrates. The brine shrimp Parartemia is among the most speciose and salt-tolerant of these invertebrates. The morphotaxonomy of Parartemia is well established but there has only been limited molecular assessment of the phylogenetic relationships and boundaries of the morphospecies. We used multiple genetic markers (nuclear 28S and mitochondrial 16S and COI ) and tree-building methods (Bayesian inference and maximum likelihood) to investigate the phylogeny of Parartemia . We also used species delimitation methods to test the validity of morphological species designations. The data set included all but 2 of the 18 described Parartemia morphospecies, collected from a total of 93 sites from across southern Australia plus some sequences from GenBank. The results identified large amounts of molecular divergence (e.g. COI P- values of up to 25.23%), some groups of closely related species (which also usually shared some morphological similarities) and some distinctive species, although the relationships among divergent lineages were generally not well resolved. The most conservative set of results from the species delimitation analyses suggests that the morphotaxonomy is largely accurate, although many morphospecies comprised divergent genetic lineages separated by COI P- values of up to 17.02%. Two putative new morphospecies, three cryptic species and one synonymy were identified. Our findings improve the knowledge of Parartemia taxonomy and will facilitate the development of future studies and conservation of this taxon.
Details
- Title
- A molecular assessment of species boundaries and relationships in the Australian brine shrimp Parartemia (Anostraca: Parartemiidae)
- Authors/Creators
- Md Aminul Islam - Murdoch UniversityJennifer Chaplin - Murdoch University, School of Environmental and Conservation SciencesAngus D'Arcy Lawrie - Murdoch UniversityMahabubur Rahman - Murdoch UniversityAdrian Pinder
- Publication Details
- Invertebrate systematics, Vol.38(11), IS24044
- Publisher
- CSIRO Publishing
- Number of pages
- 20
- Grant note
- Australian GovernmentStantec Australia Pty Ltd in Western Australia
The authors express their gratitude to the Department of Biodiversity, Conservation and Attractions, the Western Australian Museum and the Stantec Australia Pty Ltd in Western Australia, as well as the Tasmanian Museum and Art Gallery, Hobart, for generously providing some specimens. The authors thank Brian V. Timms for his invaluable suggestions during this study. We also thank two reviewers for their constructive criticisms that have improved the quality of the manuscript.
- Identifiers
- 991005717665407891
- Copyright
- © 2024 The Author(s) (or their employer(s)).
- Murdoch Affiliation
- School of Environmental and Conservation Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.216 Lake Ecosystems
- Web Of Science research areas
- Evolutionary Biology
- Zoology
- ESI research areas
- Plant & Animal Science