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Species composition and hybridisation of mussel species (Bivalvia: Mytilidae) in Australia
journal contribution
posted on 2016-01-01, 00:00 authored by Emi Sherizan Ab Rahim, T T T Nguyen, B Ingram, C Riginos, Kim Weston, Craig ShermanCraig ShermanMussels belonging to the Mytilus edulis species complex have been the focus of numerous studies exploring the systematics and origin of this commercially and ecologically important genus. Species have wide geographical ranges and hybridise where their distributions overlap, making identification difficult. Several molecular markers have been used to distinguish between the species within the M. edulis species complex; however, no single marker system has been found to be completely diagnostic, and a combination of markers are used. Here, we used a combination of three nuclear genes and a mitochondrial gene region to assess the species composition of Mytilus mussels collected across its geographical range in Australia. Our results show that the majority (98.5%) of individuals sampled from Australian populations are Mytilus galloprovincialis, with 56.2% of them displaying a southern hemisphere haplotype, 10.3% displaying a putatively northern hemisphere haplotype, and 32% having M. galloprovincialis genotypes consistent with either northern or southern hemisphere M. galloprovincialis lineages. The taxonomic origin of the remaining 1.5% of samples (n=3) could not be conclusively determined. Our results suggest that there have been significant introductions of non-native M. galloprovincialis lineages into both southern and northern hemisphere populations.
History
Journal
Marine and Freshwater ResearchVolume
67Issue
12Pagination
1955 - 1963Publisher
CSIRO PUBLISHINGPublisher DOI
ISSN
1323-1650eISSN
1448-6059Language
EnglishPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, CSIROUsage metrics
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No categories selectedKeywords
Science & TechnologyLife Sciences & BiomedicinePhysical SciencesFisheriesLimnologyMarine & Freshwater BiologyOceanographybiogeographydiversitygene flowgenetic identificationhybridisationspeciationspecies complexMYTILUS-GALLOPROVINCIALIS BIVALVIADOUBLY UNIPARENTAL INHERITANCETRANSMITTED MITOCHONDRIAL-DNACHILEAN BLUE MUSSELPCR-BASED NUCLEARSOUTHERN-HEMISPHEREHYBRID ZONETAXONOMIC STATUSSPP. MUSSELSEDULIS
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