Southern Hemisphere coasts are biologically connected by frequent, long-distance rafting events

Fraser, Ceridwen I.; Dutoit, Ludovic; Morrison, Adele K.; Pardo, Luis Miguel; Smith, Stephen; Pearman, William S; Parvizi, Elahe; Waters, Jonathan M.; Macaya, Erasmo C.

doi:10.1016/j.cub.2022.05.035

Cited by 24 publications

(22 citation statements)

References 48 publications

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“…Rapid dispersal (geologically speaking) has been considered less likely in explaining Cambrian trilobite biogeographic patterns than a cryptic history requiring invocations of rampant convergence or rarity 16 . In fact, marine invertebrates can generally disperse rapidly across large distances 66 , either by planktonic larval dispersal, or other measures almost certainly present during the Cambrian, such as transport on semi-submerged substrates such as floating macroalgal or pumice rafts 68 , 69 . For example, even in the last few hundred years, pumice rafts have occurred frequently in all major oceans, and have been shown to develop diverse assemblages and transfer organisms vast distances (e.g., in a recent incident >80 species and >5000 km 70 ).…”

Section: Introductionmentioning

confidence: 99%

“…For example, even in the last few hundred years, pumice rafts have occurred frequently in all major oceans, and have been shown to develop diverse assemblages and transfer organisms vast distances (e.g., in a recent incident >80 species and >5000 km 70 ). Southern Hemisphere coastal communities are also biologically linked by frequent, long-distance dispersal on macroalgal rafts 69 . Such rafts have helped to confirm that marine invertebrate distributions are strongly controlled by ocean currents 70 – 72 .…”

Section: Introductionmentioning

confidence: 99%

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Reassessing a cryptic history of early trilobite evolution

Holmes

Budd

2022

Commun Biol

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Trilobites are an iconic Paleozoic group of biomineralizing marine euarthropods that appear abruptly in the fossil record (c. 521 million years ago) during the Cambrian ‘explosion’. This sudden appearance has proven controversial ever since Darwin puzzled over the lack of pre-trilobitic fossils in the Origin of Species, and it has generally been assumed that trilobites must have an unobserved cryptic evolutionary history reaching back into the Precambrian. Here we review the assumptions behind this model, and suggest that a cryptic history creates significant difficulties, including the invocation of rampant convergent evolution of biomineralized structures and the abandonment of the synapomorphies uniting the clade. We show that a vicariance explanation for early Cambrian trilobite palaeobiogeographic patterns is inconsistent with factors controlling extant marine invertebrate distributions, including the increasingly-recognized importance of long-distance dispersal. We suggest that survivorship bias may explain the initial rapid diversification of trilobites, and conclude that the group’s appearance at c. 521 Ma closely reflects their evolutionary origins.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reassessing a cryptic history of early trilobite evolution

Holmes

Budd

2022

Commun Biol

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“…Phylogenetic and phylogenomic methods [64], ancestral distribution reconstruction, and fossil calibration now provide increasing explanatory power for this approach.…”

Section: Challenges and Opportunities For Future Researchmentioning

confidence: 99%

The establishment of plants following long-distance dispersal

Milne

Liu

et al. 2023

Trends in Ecology & Evolution

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“…Generally, using a reference genome will yield more loci with more accurate genotyping and less missing data than a de novo assembly (Fraser et al, 2022; Maroso et al, 2018; Shafer et al, 2017). However, it is crucial to consider the quality of a reference genome and evolutionary relatedness, as it acts as a filter for loci.…”

Section: Identifying Locimentioning

confidence: 99%

Genotyping‐by‐sequencing for biogeography

Vaux

Dutoit

Fraser

et al. 2022

Journal of Biogeography

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Aim: Genotyping-by-sequencing (GBS) and similar reduced-representation sequencing methods, such as restriction site-associated DNA sequencing (RADseq), have been revolutionary for genetic analyses in biogeography. However, navigating the many different methodological and analytical approaches and numerous sources of potential error can be overwhelming. We provide an overview of key considerations for biogeographical research using GBS, from sample design through data filtering to the sharing of data, which should particularly assist new users.Taxon: All taxa. Location: Worldwide. Methods:We review recent advances for GBS and compare differences among GBS methods and analytical approaches. We highlight the concerns most relevant for biogeographical research, and emphasise practical limitations for studies on non-model organisms.Results: GBS methods vary substantially and recent literature demonstrates the need for careful study design and data filtering relevant to the study organism and hypothesis under investigation. Biogeographical research using non-model organisms or long-term sampling are likely to face some practical limitations compared to ideal GBS study designs. The methodological information recorded in published manuscripts often varies. We outline a general framework for planning and undertaking biogeographical research using GBS.Main conclusions: GBS and similar approaches have grown rapidly in popularity for biogeographical research. Evaluating, recording and justifying decisions throughout a GBS workflow-across sampling, library preparation and sequencing, identifying and filtering samples and loci, biogeographical analyses, and sharing data-is crucial for improving scientific reproducibility and compatibility among GBS datasets. This review outlines ways to improve and simplify GBS research, thereby enhancing our capacity to use genomic data to address broad-scale biogeographical questions.

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Southern Hemisphere coasts are biologically connected by frequent, long-distance rafting events

Cited by 24 publications

References 48 publications

Reassessing a cryptic history of early trilobite evolution

Reassessing a cryptic history of early trilobite evolution

The establishment of plants following long-distance dispersal

Genotyping‐by‐sequencing for biogeography

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