993 results match your criteria recognition taxa

The seven ways eukaryotes produce repeated colour motifs on external tissues.

Biol Rev Camb Philos Soc 2021 May 6. Epub 2021 May 6.

Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, 57 rue Cuvier, CP39, Paris, 75005, France.

The external tissues of numerous eukaryote species show repeated colour patterns, usually characterized by units that are present at least twice on the body. These dotted, striped or more complex phenotypes carry out crucial biological functions, such as partner recognition, aposematism or camouflage. Very diverse mechanisms explaining the formation of repeated colour patterns in eukaryotes have been identified and described, and it is timely to review this field from an evolutionary and developmental biology perspective. Read More

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Discordant Phylogenomic Placement of Hydnoraceae and Lactoridaceae Within Piperales Using Data From All Three Genomes.

Front Plant Sci 2021 12;12:642598. Epub 2021 Apr 12.

Institut für Botanik, Technische Universität Dresden, Dresden, Germany.

Phylogenetic relationships within the magnoliid order Piperales have been studied extensively, yet the relationships of the monotypic family Lactoridaceae and the holoparasitic Hydnoraceae to the remainder of the order remain a matter of debate. Since the first confident molecular phylogenetic placement of Hydnoraceae among Piperales, different studies have recovered various contradictory topologies. Most phylogenetic hypotheses were inferred using only a few loci and have had incomplete taxon sampling at the genus level. Read More

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Age and social experience induced plasticity across brain regions of the paper wasp .

Biol Lett 2021 04 14;17(4):20210073. Epub 2021 Apr 14.

Department of Neurobiology and Behaviour, Cornell University, Ithaca, NY 14853, USA.

Developmental studies of brain volumes can reveal which portions of neural circuits are sensitive to environmental inputs. In social insects, differences in relative investment across brain regions emerge as behavioural repertoires change during ontogeny or as a result of experience. Here, we test the effects of maturation and social experience on morphological brain development in paper wasps focusing on brain regions involved in visual and olfactory processing. Read More

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Molecular systematics and biogeographic history of the African climbing-mouse complex (Dendromus).

Mol Phylogenet Evol 2021 Mar 30;161:107166. Epub 2021 Mar 30.

Science and Education, Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, United States; College of Arts & Sciences, Roosevelt University, 430 S. Michigan Avenue, Chicago, IL 60605, United States.

Climbing mice in the genus Dendromus (sensu lato) are widely distributed in Africa, south of the Saharan Desert. The 17 currently recognized species in the genus range from widespread taxa to single-mountain endemics, and there is considerable variation across species with respect to habitats occupied. These habitats range from arid grasslands and savannahs to sub-alpine and alpine vegetation. Read More

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Comparative venomics and preclinical efficacy evaluation of a monospecific Hemachatus antivenom towards sub-Saharan Africa cobra venoms.

J Proteomics 2021 May 26;240:104196. Epub 2021 Mar 26.

Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica.

Cobras are the most medically important elapid snakes in Africa. The African genera Naja and Hemachatus include snakes with neurotoxic and cytotoxic venoms, with shared biochemical, toxinological and antigenic characteristics. We have studied the antigenic cross-reactivity of four sub-Saharan Africa cobra venoms against an experimental monospecific Hemachatus haemachatus antivenom through comparative proteomics, preclinical assessment of neutralization, and third generation antivenomics. Read More

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Molecular evidence for deeper diversity in Australian Tanypodinae (Chironomidae): Yarrhpelopia and related new taxa.

Zootaxa 2021 Mar 24;4949(1):zootaxa.4949.1.1. Epub 2021 Mar 24.

Evolution and Ecology, Research School of Biological Sciences, The Australian National University, Canberra, ACT 2600, Australia..

The diversity and endemism of Australian Tanypodinae (Diptera: Chironomidae) has been unclear from morphological comparisons with well-grounded northern hemisphere taxonomy. As part of a comprehensive study, here we focus on one of the few described endemic genera, Yarrhpelopia Cranston. Extensive and intensive new sampling and newly-acquired molecular data provides clarity for the type species, Yarrhpelopia norrisi Cranston and allows recognition of congeners and potential sister group(s). Read More

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A new species of cat-eyed snake (Serpentes: Dipsadinae: Leptodeirini) from the Andes of southern Ecuador.

Zootaxa 2020 Dec 16;4895(3):zootaxa.4895.3.3. Epub 2020 Dec 16.

Museo de Zoología, Departamento de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Avenida 12 de Octubre 1076 y Roca, Apartado 17-01-2184, Quito, Ecuador..

Leptodeira is one of the most widespread and taxonomically problematic snake taxa in the Americas. Here we describe a new species of Leptodeira from the Andes of southern Ecuador based on morphological and molecular data. The new species is geographically close and morphologically similar to L. Read More

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December 2020

Revision of the subgenus Stigmatophorella of Chalcophorella (Coleoptera: Buprestidae: Chrysochroinae).

David Frank

Zootaxa 2020 Dec 17;4895(4):zootaxa.4895.4.1. Epub 2020 Dec 17.

Kotorská 22, 140 00 Praha 4, Czech Republic..

The subgenus Stigmatophorella Tôyama, 1986 of Chalcophorella Kerremans, 1903 is revised based on comparative study of extensive material including types of all described taxa. One new subspecies is described: Chalcophorella (Stigmatophorella) bagdadensis wandalii subsp. nov. Read More

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December 2020

One, two or three? Integrative species delimitation of short-range endemic Hemicycla species (Gastropoda: Helicidae) from the Canary Islands based on morphology, barcoding, AFLP and ddRADseq data.

Mol Phylogenet Evol 2021 Mar 16;161:107153. Epub 2021 Mar 16.

Center of Natural History, Zoological Museum, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany. Electronic address:

Hemicycla mascaensis and H. diegoi are short-range endemics that occur allopatrically in small areas in the Teno Mountains in the western part of Tenerife (Canary Islands). Both taxa have been recognised as distinct species based on differences in shell morphology and genital anatomy. Read More

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Molecular phylogeny, historical biogeography and revised classification of andrenine bees (Hymenoptera: Andrenidae).

Mol Phylogenet Evol 2021 Mar 16:107151. Epub 2021 Mar 16.

Canadian National Collection of Insects, Arachnids and Nematodes, Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada. Electronic address:

The mining bee subfamily Andreninae (Hymenoptera: Andrenidae) is a widely distributed and diverse group of ground-nesting solitary bees, including numerous species known to be important pollinators. Most of the species diversity of Andreninae is concentrated in the mainly Holarctic genus Andrena, comprising ca. 1550 described species. Read More

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If horses had toes: demonstrating mirror self recognition at group level in Equus caballus.

Anim Cogn 2021 Mar 13. Epub 2021 Mar 13.

Unit of Ethology, Department of Biology, University of Pisa, Via Alessandro Volta 4bis, 56126, Pisa, Italy.

Mirror self-recognition (MSR), investigated in primates and recently in non-primate species, is considered a measure of self-awareness. Nowadays, the only reliable test for investigating MSR potential skills consists in the untrained response to a visual body mark detected using a reflective surface. Here, we report the first evidence of MSR at group level in horses, by facing the weaknesses of methodology present in a previous pilot study. Read More

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New species and records of Trichoderma isolated as mycoparasites and endophytes from cultivated and wild coffee in Africa.

Sci Rep 2021 Mar 11;11(1):5671. Epub 2021 Mar 11.

Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.

A survey for species of the genus Trichoderma occurring as endophytes of Coffea, and as mycoparasites of coffee rusts (Hemileia), was undertaken in Africa; concentrating on Cameroon and Ethiopia. Ninety-four isolates of Trichoderma were obtained during this study: 76 as endophytes of healthy leaves, stems and berries and, 18 directly from colonized rust pustules. A phylogenetic analysis of all isolates used a combination of three genes: translation elongation factor-1α (tef1), rpb2 and cal for selected isolates. Read More

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The basitarsal sulcus gland, a novel exocrine structure in ants.

Arthropod Struct Dev 2021 Mar 2;61:101041. Epub 2021 Mar 2.

California Academy of Sciences, 55 Music Concourse Dr., San Francisco, CA 94941, USA.

The basitarsus of the mid- and/or hindlegs of several Amblyoponinae ants shows a deep longitudinal groove or sulcus on its anterior face in workers and queens. Histological examination reveals this sulcus is associated with a conspicuous novel epithelial gland, which brings the number of exocrine glands in the legs of ants to 25. The ultrastructural characteristics of the gland show the presence of a well-developed smooth endoplasmic reticulum. Read More

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An integrated method for taxonomic identification of microorganisms.

Vavilovskii Zhurnal Genet Selektsii 2020 Jul;24(4):376-382

Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Kurchatov Genomic Center of the Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.

For accurate species-level identification of microorganisms, researchers today increasingly use a combination of standard microbiological cultivation and visual observation methods with molecular biological and genetic techniques that help distinguish between species and strains of microorganisms at the level of DNA or RNA molecules. The aim of this work was to identify microorganisms from the ICG SB RAS Collection using an integrated approach that involves a combination of various phenotypic and genotypic characteristics. Key molecular-genetic and phenotypic characteristics were determined for 93 microbial strains from the ICG SB RAS Collection. Read More

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Congruent microbiome signatures in fibrosis-prone autoimmune diseases: IgG4-related disease and systemic sclerosis.

Genome Med 2021 Feb 28;13(1):35. Epub 2021 Feb 28.

Broad Institute of MIT and Harvard, Cambridge, MA, USA.

Background: Immunoglobulin G4-related disease (IgG4-RD) and systemic sclerosis (SSc) are rare autoimmune diseases characterized by the presence of CD4+ cytotoxic T cells in the blood as well as inflammation and fibrosis in various organs, but they have no established etiologies. Similar to other autoimmune diseases, the gut microbiome might encode disease-triggering or disease-sustaining factors.

Methods: The gut microbiomes from IgG4-RD and SSc patients as well as healthy individuals with no recent antibiotic treatment were studied by metagenomic sequencing of stool DNA. Read More

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February 2021

Transcriptome profiling of Lymnaea stagnalis (Gastropoda) for ecoimmunological research.

BMC Genomics 2021 Mar 1;22(1):144. Epub 2021 Mar 1.

Center for Evolutionary and Theoretical Immunology, Department of Biology, The University of New Mexico, Albuquerque, NM, 87131, USA.

Background: Host immune function can contribute to numerous ecological/evolutionary processes. Ecoimmunological studies, however, typically use one/few phenotypic immune assays and thus do not consider the complexity of the immune system. Therefore, "omics" resources that allow quantifying immune activity across multiple pathways are needed for ecoimmunological models. Read More

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Identification of Species Native to South Korea Using Molecular and Morphological Characteristics.

Front Plant Sci 2021 9;12:608559. Epub 2021 Feb 9.

Department of Industrial Plant Science and Technology, Chungbuk National University, Cheongju, South Korea.

Recently, within the Fabaceae family, the genus has been recognized for its vital role in sustainable agriculture. species are economically important grain and forage crops. However, the presence of complex morphological characteristics makes identification and recognition of native species difficult. Read More

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February 2021

6mA-Pred: identifying DNA N6-methyladenine sites based on deep learning.

PeerJ 2021 3;9:e10813. Epub 2021 Feb 3.

School of Intelligent Manufacturing and Equipment, Shenzhen Institute of Information Technology, Shenzhen, China.

With the accumulation of data on 6mA modification sites, an increasing number of scholars have begun to focus on the identification of 6mA sites. Despite the recognized importance of 6mA sites, methods for their identification remain lacking, with most existing methods being aimed at their identification in individual species. In the present study, we aimed to develop an identification method suitable for multiple species. Read More

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February 2021

Automated detection of frog calls and choruses by pulse repetition rate.

Conserv Biol 2021 Feb 14. Epub 2021 Feb 14.

Department of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

Anurans (frogs and toads) are among the most globally threatened taxonomic groups. Successful conservation of anurans will rely on improved data on the status and changes in local populations, particularly for rare and threatened species. Automated sensors, such as acoustic recorders, have the potential to provide such data by massively increasing the spatial and temporal scale of population sampling efforts. Read More

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February 2021

Comparative Proteomic Analysis of sensu lato (Acari: Ixodidae) Tropical and Temperate Lineages: Uncovering Differences During Infection.

Front Cell Infect Microbiol 2020 29;10:611113. Epub 2021 Jan 29.

Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa (GHTM-IHMT-UNL), Lisboa, Portugal.

The tick vector is established as a complex of closely related species with high veterinary-medical significance, in which the presence of different genetic, morphological, and biological traits has resulted in the recognition of different lineages within taxa. One of the most striking differences in the "temperate" and "tropical" lineages of  (s.l. Read More

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January 2021

On , an endangered species from Ecuador, and , very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these.

PhytoKeys 2021 26;171:91-153. Epub 2021 Jan 26.

Herbario Nacional de México, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico.

Hydrangea section Cornidia, currently consisting of 19 accepted taxa, occurs from Mexico to Chile and Argentina, with one species in southeast Asia. Its representatives are root-climbing lianas which may grow up to 60 m high in the tree canopy of temperate to (sub)tropical forests. Our extensive field work throughout its distribution area, study of herbarium specimens and ongoing molecular studies have resulted in the discovery of species new to science, as well as new insights into the circumscription of many taxa. Read More

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January 2021

Leaf anatomy of two medicinal Croton species: Contribution to plant recognition.

Microsc Res Tech 2021 Feb 13. Epub 2021 Feb 13.

Laboratório de Anatomia Vegetal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.

Croton L. (Euphorbiaceae) is the second largest genus of the Euphorbiaceae s.l. Read More

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February 2021

Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China.

BMC Ecol Evol 2021 02 10;21(1):21. Epub 2021 Feb 10.

Institute of Evolution & Marine Biodiversity, and College of Fisheries, Ocean University of China, Qingdao, 266003, China.

Background: Ciliated protists, a huge assemblage of unicellular eukaryotes, are extremely diverse and play important ecological roles in most habitats where there is sufficient moisture for their survivals. Even though there is a growing recognition that these organisms are associated with many ecological or environmental processes, their biodiversity is poorly understood and many biotopes (e.g. Read More

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February 2021

Evolution of Chi motifs in Proteobacteria.

G3 (Bethesda) 2021 Jan;11(1)

Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27402, USA.

Homologous recombination is a key pathway found in nearly all bacterial taxa. The recombination complex not only allows bacteria to repair DNA double-strand breaks but also promotes adaption through the exchange of DNA between cells. In Proteobacteria, this process is mediated by the RecBCD complex, which relies on the recognition of a DNA motif named Chi to initiate recombination. Read More

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January 2021

Ten recent insights for our understanding of cooperation.

Nat Ecol Evol 2021 04 28;5(4):419-430. Epub 2021 Jan 28.

Department of Zoology, University of Oxford, Oxford, UK.

Since Hamilton published his seminal papers in 1964, our understanding of the importance of cooperation for life on Earth has evolved beyond recognition. Early research was focused on altruism in the social insects, where the problem of cooperation was easy to see. In more recent years, research into cooperation has expanded across the entire tree of life, and has been revolutionized by advances in genetic, microbiological and analytical techniques. Read More

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sp. nov. and sp. nov., isolated from plateau pika () on the Qinghai-Tibet Plateau of PR China.

Int J Syst Evol Microbiol 2021 Feb;71(2)

Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai 201508, PR China.

Four novel bacterial strains (ST-M6, L-033, L-031 and Z-333) were isolated from the intestinal contents of plateau pikas () collected on the QinghaiTibet Plateau, PR China. Cells were aerobic, non-motile, Gram-stain-positive, catalase-positive, oxidase-negative, capsuled and short-rod-shaped. Phylogenetic analyses based on the 16S rRNA gene sequences and 387 core genes indicated that the four isolates belong in the genus and clearly separate from recognized species. Read More

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February 2021

Greenland and Svalbard glaciers host unknown basidiomycetes: the yeast sp. nov. and the dimorphic gen. and sp. nov.

Int J Syst Evol Microbiol 2021 Feb;71(2)

Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia.

Sampling campaigns in Greenland and Svalbard were executed to explore fungal diversity in cold habitats. Three very abundant groups of strains were discovered, consisting either of recently described or of yet-undescribed psychrophilic and oligotrophic yeasts and dimorphic fungi, accounting for around 50 % of the total cultivable diversity of basidiomycetes in our studies. The occurrence of these taxa has also been demonstrated by culture-independent methods. Read More

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February 2021

Maternally derived hormones, neurosteroids and the development of behaviour.

Proc Biol Sci 2021 01 27;288(1943):20202467. Epub 2021 Jan 27.

Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA.

In a wide range of taxa, there is evidence that mothers adaptively shape the development of offspring behaviour by exposing them to steroids. These maternal effects have major implications for fitness because, by shaping early development, they can permanently alter how offspring interact with their environment. However, theory on parent-offspring conflict and recent physiological studies showing that embryos rapidly metabolize maternal steroids have placed doubt on the adaptive significance of these hormone-mediated maternal effects. Read More

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January 2021

Individual recognition is associated with holistic face processing in paper wasps in a species-specific way.

Proc Biol Sci 2021 01 20;288(1943):20203010. Epub 2021 Jan 20.

Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse; CNRS, UPS, 118 Route de Narbonne, 31062 Toulouse, France.

Most recognition is based on identifying features, but specialization for face recognition in primates relies on a different mechanism, termed 'holistic processing' where facial features are bound together into a gestalt which is more than the sum of its parts. Here, we test whether individual face recognition in paper wasps also involved holistic processing using a modification of the classic part-whole test in two related paper wasp species: , which use facial patterns to individually identify conspecifics, and , which lacks individual recognition. We show that use holistic processing to discriminate between face images but not face images. Read More

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January 2021

Biogeography of the Relationship between the Child Gut Microbiome and Innate Immune System.

mBio 2021 01 12;12(1). Epub 2021 Jan 12.

Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, Canada

The gut microbiome is a well-recognized modulator of host immunity, and its compositions differ between geographically separated human populations. Systemic innate immune responses to microbial derivatives also differ between geographically distinct human populations. However, the potential role of the microbiome in mediating geographically varied immune responses is unexplored. Read More

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January 2021