SNP data reveals the complex and diverse evolutionary history of the blue-ringed octopus genus (Octopodidae: Hapalochlaena) in the Asia-Pacific

Whitelaw, Brooke; Finn, Julian; Zenger, Kyall R.; Cooke, Ira; Morse, Peter; Strugnell, Jan M.

doi:10.1016/j.ympev.2023.107827

Cited by 4 publications

(1 citation statement)

References 77 publications

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“…Populations initially assigned during sampling were renamed into their putative subpopulation groups on the basis of genetic data (putative species and site). SVDQuartets was run under the multi-species coalescent model, standard bootstrap method with 1000 replicates, 100,000 random quartets and population taxonomic partitioning (Potter et al 2021;Whitelaw et al 2023). The final consensus tree was rooted using B. riparia (including GDP 2).…”

Section: Relationships Among Species and Populationsmentioning

confidence: 99%

Embracing biodiversity: multispecies population genomics of leafless Bossiaea species shows novel taxa, population dynamics and conservation strategies

McMaster,

Yap,

McDougall

et al. 2024

Aust. Syst. Bot.

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Leafless Bossiaea species are a unique group of plants endemic to Australia that present intriguing challenges in taxonomy and conservation because of their morphological simplicity and often small, disjunct populations. We employed whole genome reduced representation sequencing (DArTseq) to enhance our understanding of the population dynamics, diversity and taxonomy of leafless Bossiaea species. Our dataset comprised 52,539 single-nucleotide polymorphisms across 283 samples from 7 leafless Bossiaea species, including 6 listed threatened species. We examined population structure, phylogenetic relationships, kinship and gene flow within and among populations. On the basis of our population-genomic analyses, we propose recognition of the novel taxon Bossiaea vombata subsp. orientalis and a change in status from species (B. milesiae) to subspecies for B. fragrans subsp. milesiae. Additionally, we show extensive clonal reproduction across species and limited gene flow at distances of >1 km, shedding light on the challenges faced by these species. We advocate a coordinated approach to conservation, focusing on restoring self-sustaining populations and leveraging genetic rescue strategies. By addressing the population dynamics of multiple species simultaneously in taxonomically challenging lineages, we can make informed choices to safeguard biodiversity and evolutionary potential.

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Section: Relationships Among Species and Populationsmentioning

confidence: 99%

Embracing biodiversity: multispecies population genomics of leafless Bossiaea species shows novel taxa, population dynamics and conservation strategies

McMaster,

Yap,

McDougall

et al. 2024

Aust. Syst. Bot.

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Using genomics and morphometrics to monitor data-poor and commercially exploited octopod populations

Hua,

Thomson,

Strugnell

et al. 2023

Mar Biol

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Over 150 species of benthic octopods have been described within the ‘catch-all’ Octopus genus (Family: Octopodidae) and yet, many Octopus species harvested by fisheries remain unidentified to species-level due to a lack of distinguishing traits. Within species, there is also limited information on how populations differ genetically and the level of connectivity between populations. Therefore, we sampled octopods from commercial fisheries in southeast Australia, in order to identify the species, examine the phylogeographic relationships among species and the level of population genetic structuring within species, as well as to look for any adaptive genetic variation. The mitochondrial gene, cytochrome oxidase subunit III (COIII), was sequenced in 346 octopods along with single nucleotide polymorphisms using double digest restriction site-associated DNA sequencing (ddRADseq). Morphometric traits were also measured in mature specimens. The southern keeled octopus (‘Octopus’berrima) and pale octopus (‘Octopus’pallidus) were identified using COIII data. For ‘Octopus’berrima, we found that some populations whilst being morphologically similar were genetically distinct. In contrast, ‘Octopus’pallidus populations were both morphologically and genetically distinct across the studied regions. Our results provide key information to better inform conservation and management decisions for developing octopod fisheries in southeast Australia and highlight the importance of genomics tools in the conservation management of commercially and recreationally important species.

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Past, present, and future trends in octopus research

Rosa,

Santos,

Borges

et al. 2024

Octopus Biology and Ecology

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SNP data reveals the complex and diverse evolutionary history of the blue-ringed octopus genus (Octopodidae: Hapalochlaena) in the Asia-Pacific

Cited by 4 publications

References 77 publications

Embracing biodiversity: multispecies population genomics of leafless Bossiaea species shows novel taxa, population dynamics and conservation strategies

Embracing biodiversity: multispecies population genomics of leafless Bossiaea species shows novel taxa, population dynamics and conservation strategies

Using genomics and morphometrics to monitor data-poor and commercially exploited octopod populations

Past, present, and future trends in octopus research

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