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  1. 3201
    “…Frenulate species were identified from a high Arctic methane seep area on Vestnesa Ridge, western Svalbard margin (79°N, Fram Strait) based on mitochondrial cytochrome oxidase subunit I (mtCOI). Two species were found: Oligobrachia haakonmosbiensis, and a new, distinct, and undescribed Oligobrachia species. …”
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    Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution
  2. 3202
    “…We demonstrated that restriction fragment length polymorphisms (RFLPs) targeting the 16S ribosomal RNA and the cytochrome c oxidase subunit I (COI) can be used to differentiate H. longicornis from the other Haemaphysalis species found in North America. …”
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    Molecular Characterization of Haemaphysalis Species and a Molecular Genetic Key for the Identification of Haemaphysalis of North America
  3. 3203
    “…To evaluate how these changes have influenced speciation processes in octopods, fragments of two mitochondrial (Cytochrome oxidase subunit I, COI and 16S rDNA) and two nuclear (Rhodopsin and Elongation Factor-1α, EF-1α) genes were amplified from samples from the Atlantic and Pacific oceans. …”
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    A biogeographic framework of octopod species diversification: the role of the Isthmus of Panama
  4. 3204
    por Nakamura, Kenichi
    Publicado 2019
    “…Also, even minor changes of site information in jRCT should be submitted to certified review board and the hospital directors of all participating sites, which is one of the most serious burden for investigators. Confirmation of COI declaration in participating sites is another burden for investigators/sites. …”
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    EL2 CHANGES IN JAPANESE ACADEMIC CLINICAL TRIALS AND FRAMEWORKS FOR PLANNING CLINICAL TRIALS
  5. 3205
    “…Molecular comparisons were conducted on the DNA of LEM specimens from India, Hawaii, Brazil, Taiwan, Australia and Florida. The amplified COI fragment showed very low nucleotide variation among the locations and thus, could be used for accurate LEM identification. …”
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    Detection of the Lychee Erinose Mite, Aceria litchii (Keifer) (Acari: Eriophyidae) in Florida, USA: A Comparison with Other Alien Populations
  6. 3206
    “…Comparative molecular analysis reveals that the new species demonstrates significant genetic divergence in the mitochondrial COI gene from the morphologically similar H. japapigu and H. pontohi (estimated uncorrected p-distances of 16.3% and 15.2%, respectively). …”
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    Hippocampus nalu, a new species of pygmy seahorse from South Africa, and the first record of a pygmy seahorse from the Indian Ocean (Teleostei, Syngnathidae)
  7. 3207
    “…Polyps and podocysts were identified to species level by 18S rDNA and mitochondrial COI sequencing. The three polyps found on Dogger Bank all belonged to the compass jellyfish Chrysaora hysoscella. …”
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    Here are the polyps: in situ observations of jellyfish polyps and podocysts on bivalve shells
  8. 3208
    “…The phylogeographic structure of T. erytreae was assessed using genetic clustering and pairwise distances, based on a dataset of public COI sequences recorded as T. erytreae. The dataset revealed ten haplotypes with strong phylogeographic structure in Africa and Europe. …”
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    Mitochondrial genetic variation reveals phylogeographic structure and cryptic diversity in Trioza erytreae
  9. 3209
    “…Molecular identification used the partial nucleotide sequences of the mitochondrial cytochrome c oxidase I (COI) gene. The results of both identification methods identified the parasitic Diptera as the scuttle fly, Megaselia scalaris (Loew) (Diptera: Phoridae). …”
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    Parasitism of Soldiers of the Termite, Macrotermes gilvus (Hagen), by the Scuttle Fly, Megaselia scalaris (Loew) (Diptera: Phoridae)
  10. 3210
    “…Here we performed population genetic analyses on the northwestern Pacific chiton Acanthochitona cf. rubrolineata (Lischke, 1873) using two mitochondrial gene fragments (COI and 16S) from 180 individuals sampled from 11 populations among the coastal waters of Korea, Japan, and China. …”
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    Life-history features and oceanography drive phylogeographic patterns of the chiton Acanthochitona cf. rubrolineata (Lischke, 1873) in the northwestern Pacific
  11. 3211
    “…D. citri mitochondrial cytochrome oxidase subunit I gene (mtCOI) were more divergent between D. citri populations that were infected with different wDi strains or had different infection statuses (single infection vs. coinfection). …”
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    Genetic variation and potential coinfection of Wolbachia among widespread Asian citrus psyllid (Diaphorina citri Kuwayama) populations
  12. 3212
    “…This study addresses these issues using the European free‐tailed bat Tadarida teniotis, involving high‐throughput sequencing of a small fragment of the COI gene in 15 separate faecal pellets and a 15‐pellet pool per each of 20 bats. …”
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    How much is enough? Effects of technical and biological replication on metabarcoding dietary analysis
  13. 3213
    “…In the current study, we comprehensively assessed the performance of ten COI and two 16S primer pairs for eDNA metabarcoding, including novel and previously published primers. …”
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    In silico and empirical evaluation of twelve metabarcoding primer sets for insectivorous diet analyses
  14. 3214
    “…For the FIA IgG test, all patients in the pneumonia group exhibited a high COI value (≥15.0), while 89.8% of mild symptomatic and 73.3% of asymptomatic/anosmia groups showed a high value (p = 0.049). …”
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    Neutralizing Antibody Production in Asymptomatic and Mild COVID-19 Patients, in Comparison with Pneumonic COVID-19 Patients
  15. 3215
    “…In this study, we used COI and ITS sequence polymorphism to assess (1) the genetic divergence between the two morphotypes, (2) their connectivity patterns and (3) their phylogenetic position within the Parazoanthidae. …”
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    Evidence of genetic isolation between two Mediterranean morphotypes of Parazoanthus axinellae
  16. 3216
    “…A further 236 and 62 barcoding baits were designed for COI and histone H3 genes respectively for quality and contamination checks. …”
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    Transcriptome‐based target‐enrichment baits for stony corals (Cnidaria: Anthozoa: Scleractinia)
  17. 3217
    “…Sequencing variation in the mitochondrial cytochrome c oxidase I (COI) region has been proven to be useful for the identification of species of many groups of insect pests. …”
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    DNA Barcoding: A Reliable Method for the Identification of Thrips Species (Thysanoptera, Thripidae) Collected on Sticky Traps in Onion Fields
  18. 3218
    “…We assembled individual mitochondrial cytochrome c oxidase subunit 1 (COI) sequences (n = 866) and found high levels of sequence divergence at both small (<10 km) and large (>600 km) spatial scales for four of the six Collembola species. …”
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    Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet
  19. 3219
    “…We also found that available reference datasets from GenBank and BOLD for the animal marker gene cytochrome oxidase I (COI) can be complementary, and we discuss methods to improve existing databases to include versioned releases. …”
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    A total crapshoot? Evaluating bioinformatic decisions in animal diet metabarcoding analyses
  20. 3220
    “…Our analyses using mitochondrial COI-gene sequences and shell morphometric traits suggest a panmictic population structure throughout its geographic and bathymetric ranges, spanning 4,000 km from the westernmost Manus Basin (151ºE; 1,300 m deep) to the easternmost Lau Basin (176ºE; 2,720 m). …”
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    Population connectivity of the hydrothermal-vent limpet Shinkailepas tollmanni in the Southwest Pacific (Gastropoda: Neritimorpha: Phenacolepadidae)
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