Molecular signatures reveal intra-species divergence, undetectable by traditional morphology, in the deadly box jellyfish, Chironex yamaguchii (Cubozoa; Chirodropidae) of Western Pacific

Regional Studies in Marine Science, Год журнала: 2025, Номер unknown, С. 104033 - 104033

Опубликована: Янв. 1, 2025

Язык: Английский

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How we study cryptic species and their biological implications: A case study from marine shelled gastropods

Ecology and Evolution, Год журнала: 2023, Номер 13(9)

Опубликована: Сен. 1, 2023

Methodological and biological considerations are intertwined when studying cryptic species. A potentially large component of modern biodiversity, the frequency species among taxonomic groups is not well documented. The term "cryptic species" imprecisely used in scientific literature, causing ambiguity interpreting their evolutionary ecological significance. This study reviews how have been defined, discussing implications for taxonomy biology, explores these with a case based on recently published literature extant shelled marine gastropods. Reviewed gastropods were recorded by Records presented authors variable levels confidence but difficult to disentangle from inherent biases effort. These complexities notwithstanding, most gastropod discussed

Язык: Английский

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A comprehensive DNA barcoding of Indian freshwater fishes of the Indus River system, Beas

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Фев. 2, 2024

The Beas River is one of the important rivers Indus system located in Himachal Pradesh, India, that harbors a diverse range freshwater fish species. present study employed COI gene to investigate ichthyofaunal diversity river Beas. Through sequencing 203 specimens from River, we identified 43 species, belonging 31 genera, 16 families, and 10 orders. To analyze genetic divergence phylogeny 485 sequences Indian origin were retrieved BOLD, resulting dataset 688 sequences. Our findings consistently revealed hierarchical increase mean K2P within species (0.80%), genus (9.06%), families (15.35%). Automated Barcode Gap discovery, Neighbour Joining, Bayesian inference consensus tree methodologies determine putative their phylogeny, successfully delimiting most with only few exceptions. results unveiled six exhibiting high intra-species (> 2%), suggesting presence sibling falsely on online databases. established first DNA barcoding-based inventory providing comprehensive insights into economically exploited endangered vulnerable In order ensure sustainable use aquatic resources recommend implementation measures protect biodiversity resources.

Язык: Английский

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How cryptic animal vectors of fungi can influence forest health in a changing climate and how to anticipate them

Applied Microbiology and Biotechnology, Год журнала: 2025, Номер 109(1)

Опубликована: Март 15, 2025

Abstract Fungal spores are usually dispersed by wind, water, and animal vectors. Climate change is accelerating the spread of pathogens to new regions. While well-studied vectors like bark beetles moths contribute pathogen transmission, other, less-recognized species play a crucial role at different scales. Small-scale dispersers, such as mites, rodents, squirrels, woodpeckers, facilitate fungal within trees or entire forest On larger scale, birds significantly long-distance dispersal, potentially aiding establishment invasive across continents. These remain underexplored often overlooked in disease studies therefore called cryptic Understanding full range dispersal mechanisms critical climate drive shifts distributions increases vector activity. Expanding monitoring detection tools include these hidden carriers will improve our ability track distribution pathogens. Integrating targeted research, innovative technologies, collaborative efforts disciplines borders essential for enhancing management mitigating disease’s ecological economic impacts. Key points • Cryptic spore forests accelerates altering distributions, increasing activity, facilitating dispersal. Innovative tools, eDNA sampling predictive modelling, uncover contributions mitigate

Язык: Английский

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Cold, creeping things: deep phylogeographic structure in a naturally fragmented cool-adapted skink (Scincidae; Anepischetosia) from south-eastern Australia

Conservation Genetics, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Abstract The temperate forests of eastern Australia have been extensively fragmented over the last 200 years and are now increasingly threatened by fire climate change. To understand manage impacts these threats, there is a need to patterns endemism diversity across an array ecologically divergent taxa. Anepischetosia monotypic genus scincid lizards that adapted cool, wet forest habitats in far south-eastern mainland Australia. Here we use reduced representation genomic data sequencing mitochondrial ND4 locus from museum tissue samples characterise phylogeographic structure population-level genetic this taxon. These reveal novel deep geographically localised structuring, including at least six ESUs spanning several candidate species. Many lineages associated with patches mesic habitat, especially north range, suggesting long histories persistence through major environmental change Plio-Pleistocene, similar observed some taxa non-glaciated landscapes northern hemisphere. Two putative ESUs, whose ranges overlap areas impacted recent high-intensity bushfires, low may be conservation concern. Additional seemingly isolated populations western Victoria remain poorly sampled comprise yet further or results highlight how analyses can overlooked concern leveraging collections – as well-sampled accessible even considered comparatively “well known”.

Язык: Английский

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Punctuated equilibrium: state of the evidence

Paleobiology, Год журнала: 2025, Номер unknown, С. 1 - 10

Опубликована: Май 21, 2025

Abstract Despite its many extensions and implications, we argue that punctuated equilibrium itself has two core, empirical claims: (1) stasis dominates within fossil species; (2) morphological change is concentrated in pulses occur associated with speciation. Here assess the state of evidence for these claims, 50 years after equilibrium’s foundational paper. Spurred by controversy, paleontologists have amassed a large number case studies which morphology species-level lineages tracked over time. Modern, likelihood-based methods been used to fit data models stasis, random walks, directional trends, as well more complex dynamics. Compilations reveal trends predicted gradualist expectations are infrequent. Although commonly observed, it favored less than half cases, meandering walks or generally account majority cases. The second claim received much scrutiny first. speciational plausible theory, only few paleontological integrate ancestor–descendant time series into phylogenetic framework needed estimate cladogenetic compare anagenesis. These studies, indirect analyses extant clades, suggest can occur, but cannot yet confidence frequency importance compared anagenetic changes.

Язык: Английский

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Review of research trends and gaps in the biology of freshwater shrimps of the genus Caridina H. Milne Edwards, 1837 (Decapoda: Caridea: Atyidae)

Journal of Crustacean Biology, Год журнала: 2025, Номер 45(2)

Опубликована: Апрель 1, 2025

Abstract We utilized the Scopus and Web of Science databases, along with Biblioshiny package in R, to conduct a bibliometric analysis analyse gaps studies on species freshwater shrimp Caridina H. Milne Edwards, 1837. The maps bibliographic materials into graphical representation using input data downloaded from respective databases. covered 1930 2024. By applying relevance filtering adhering PRISMA (Preferred Reporting Items for Systematic Reviews Meta-Analysis) guidelines, 475 articles were selected. key research topics highlighting advancements included amphidromy, biogeography, cryptic species, integrative taxonomy, climate change, ornamental trade. absence change trade strongly suggests gap research. study aims provide valuable insights strategic implications regulatory considerations, offering guidance policymakers crafting effective policies sustainability conservation. It also aimed serve as resource researchers, identifying further exploration suggesting avenues innovative Cardinia.

Язык: Английский

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Scientific history, biogeography, and biological traits predict presence of cryptic or overlooked species

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2023, Номер 99(2), С. 546 - 561

Опубликована: Дек. 4, 2023

ABSTRACT Genetic data show that many nominal species are composed of more than one biological species, and thus contain cryptic in the broad sense (including overlooked species). When ignored, generate confusion which, beyond biodiversity or vulnerability underestimation, blurs our understanding ecological evolutionary processes may impact soundness decisions conservation medicine. However, very few hypotheses have been tested about factors predispose a taxon to species. To fill this gap, we surveyed literature on free‐living marine metazoans built two sets, 187,603 another 83 classes phyla, test several hypotheses, correcting for sequence availability, size phylogenetic relatedness. We found strong effect scientific history: probability containing was highest earliest described varied among time periods potentially consistently with an influence prevailing theories. The being present also increased large distribution ranges. They were frequent north polar south zones, contradicting previous predictions tropics, supporting hypothesis diverged recently. number classes, excess hydrozoans polychaetes, deficit actinopterygians, example, but precise class ranking relatively sensitive statistical model used. For all models, traits, rather phylum, appeared responsible variation classes: there fewer expected hard skeletons (perhaps because they provide good characters taxonomy) image‐forming vision (in which selection against heterospecific mating enhance morphological divergence), internal fertilisation. estimate metazoans, thousand additional complexes could be identified as become available. important animal likely other biomes taxa should aid areas biology rely accurate identification.

Язык: Английский

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Highly Resolved Genomes of Two Closely Related Lineages of the Rodent Louse Polyplax serrata with Different Host Specificities

Genome Biology and Evolution, Год журнала: 2024, Номер 16(3)

Опубликована: Март 1, 2024

Abstract Sucking lice of the parvorder Anoplura are permanent ectoparasites with specific lifestyle and highly derived features. Currently, genomic data only available for a single species, human louse Pediculus humanus. Here, we present genomes two distinct lineages, different host spectra, rodent Polyplax serrata. Genomes these ecologically lineages closely similar in gene content display conserved order genes, exception translocation. Compared P. humanus, serrata noticeably larger (139 vs. 111 Mbp) encode higher number genes. Similar to they reduced sensory-related categories such as vision olfaction. Utilizing genome-wide data, perform phylogenetic reconstruction evolutionary dating lineages. Obtained estimates reveal their relatively deep divergence (∼6.5 Mya), comparable split between chimpanzee humanus schaeffi. This supports view that likely represent cryptic species spectra. Historical demographies show glaciation-related population size (Ne) reduction, but recent restoration Ne was seen less host-specific lineage. Together genomes, analyze bacterial symbiont Legionella polyplacis evaluate potential complementarity synthesis amino acids B vitamins. We both systems, Polyplax/Legionella Pediculus/Riesia, almost identical patterns, symbionts involved vitamins not acids.

Язык: Английский

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Cryptic Taxa Revealed through Combined Analysis of Chromosomes and DNA Barcodes: The Polyommatus ripartii Species Complex in Armenia and NW Iran

Insects, Год журнала: 2024, Номер 15(7), С. 545 - 545

Опубликована: Июль 19, 2024

The detection of cryptic species in complexes that have undergone recent speciation is often difficult, since many standard nuclear markers not yet accumulated differences between closely related taxa, and mitochondrial can be leveled out due to introgressions. In these cases, the use derived chromosomal characters such as non-ancestral numbers and/or unusual karyotype features may a solution delimitation problem. However, but similar karyotypes arise secondarily result homoplastic evolution, their interpretation homologies lead incorrect taxonomic conclusions. our study, we show combined DNA barcodes helps solve this problem identifies situations where each does work individually. Using approach, fauna Armenia adjacent Iran includes following taxa Polyommatus ripartii complex (haploid chromosome number, n parentheses): P. paralcestis (n = 90), kalashiani, subsp. nov close emmeli, sp. nov. 77–79), keleybaricus, 86), demavendi belovi 73–75), antonius, 71–73), admetus anatoliensis 79) eriwanensis 29–34). yeranyani synonymized with anatoliensis.

Язык: Английский

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