Multilocus sequence data reveal dozens of putative cryptic species in a radiation of endemic Californian mygalomorph spiders (Araneae, Mygalomorphae, Nemesiidae)

Molecular Phylogenetics and Evolution, Journal Year: 2015, Volume and Issue: 91, P. 56 - 67

Published: May 27, 2015

Language: Английский

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Phylogenomics and species delimitation for effective conservation of manta and devil rays

Molecular Ecology, Journal Year: 2020, Volume and Issue: 29(24), P. 4783 - 4796

Published: Nov. 9, 2020

Abstract Practical biodiversity conservation relies on delineation of biologically meaningful units. Manta and devil rays (Mobulidae) are threatened worldwide, yet morphological similarities a succession recent taxonomic changes impede the development an effective strategy. Here, we generate genome‐wide single nucleotide polymorphism (SNP) data from geographically taxonomically representative set manta ray samples to reconstruct phylogenetic relationships evaluate species boundaries under general lineage concept. We show that nominal units supported by alternative sources constitute independently evolving lineages, find robust evidence for putative new in Gulf Mexico. Additionally, uncover substantial incomplete sorting indicating rapid speciation together with standing variation ancestral populations has driven uncertainty within Mobulidae. Finally, detect cryptic diversity distinct populations, demonstrating management below level may be warranted certain species. Overall, our study provides framework molecular genetic delimitation is relevant wide‐ranging taxa concern, highlights potential genomic support management, law enforcement strategies.

Language: Английский

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The Tara Pacific expedition—A pan-ecosystemic approach of the “-omics” complexity of coral reef holobionts across the Pacific Ocean

PLoS Biology, Journal Year: 2019, Volume and Issue: 17(9), P. e3000483 - e3000483

Published: Sept. 23, 2019

Coral reefs are the most diverse habitats in marine realm. Their productivity, structural complexity, and biodiversity critically depend on ecosystem services provided by corals that threatened because of climate change effects—in particular, ocean warming acidification. The coral holobiont is composed animal host, endosymbiotic dinoflagellates, associated viruses, bacteria, other microeukaryotes. In mandatory photosymbiosis with microalgae family Symbiodiniaceae its consequences evolution, physiology, stress resilience have yet to be fully elucidated. functioning as a whole largely unknown, although bacteria viruses presumed play roles metabolic interactions, immunity, tolerance. context anthropogenic threats reef ecosystems, Tara Pacific project aims provide baseline "-omics" complexity across Ocean for various oceanographically distinct defined areas. Inspired previous Oceans expeditions, expedition (2016–2018) has applied pan-ecosystemic approach throughout Ocean, drawing an east–west transect from Panama Papua New Guinea south–north Australia Japan, sampling 32 island systems local replicates. developed state-of-the-art technologies very-high-throughput genetic sequencing molecular analysis reveal entire microbial chemical diversity well functional traits holobionts, together measures environmental forcing. This ambitious at revealing massive amount novel biodiversity, shedding light complex links between genomes, transcriptomes, metabolomes, organisms, functions providing reference biological state modern Anthropocene.

Language: Английский

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A paradigm shift in our view of species drives current trends in biological classification

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2020, Volume and Issue: 96(2), P. 731 - 751

Published: Dec. 23, 2020

ABSTRACT Discontent about changes in species classifications has grown recent years. Many of these are seen as arbitrary, stemming from unjustified conceptual and methodological grounds, or leading to that less distinct than those recognised the past. We argue current trends classification result a paradigm shift toward which systematics population genetics have converged regards phylogenetic lineages form branches Tree Life. Species delimitation now consists determining populations belong individual lineage. This requires inferences on process lineage splitting divergence, we only partial access through incidental evidence assumptions themselves subject refutation. approach is not free problems, horizontal gene transfer, introgression, hybridisation, incorrect assumptions, sampling biases can mislead lineages. Increasing precision demanded identification both sister relationships processes blurring mimicking phylogeny, triggered, one hand, development methods explicitly address such and, other an increase geographical character data necessary infer/test processes. Although our resolving power increased, knowledge – what designate resolution remains poor for many taxa areas, limits perceptions how divergent ought be. attribute this demise trinominal nomenclature witnessing with rise subspecies their rejection altogether; raised if they found correspond lineages, while rejected fabricated reflect arbitrary partitions continuous non‐hereditary variation. Conservation strategies, based taxa, should emphasise reduce use avoid preserving variation; local variation best preserved by focusing biological generating ecosystem resilience diversity rather formally naming diagnosable units any kind. Since binomials still complexes species, been discovered but named, sparse, mistaken plenty remain untested, groups areas lack adequate resolution, cannot frequent problems. Changes will affect neglected also popular ones regions where taxonomic research remained dormant decades old were taken granted.

Language: Английский

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Taxonomy of Aspergillus series Versicolores: species reduction and lessons learned about intraspecific variability

Studies in Mycology, Journal Year: 2022, Volume and Issue: 102(1), P. 53 - 93

Published: June 30, 2022

Language: Английский

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