Evidence map›Paper›PMID 33168068›Full record

ArticleBMC research notes2020

Using pollen DNA metabarcoding to profile nectar sources of urban beekeeping in Kōtō-ku, Tokyo.

Keisuke Tanaka, Akinobu Nozaki, Hazuki Nakadai, Yuh Shiwa, Mariko Shimizu-Kadota

Abstract read
In one paragraph

Article in BMC research notes, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Authentication of the Botanical Origin of Honey:Journal of agricultural and food chemistry · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Keisuke TanakaNODAI Genome Research Center, Tokyo University of Agriculture, Setagaya, Tokyo, 156-8502, Japan.
Akinobu NozakiGraduate School of Environmental Sciences, Musashino University, Kōtō-ku, Tokyo, 135-8181, Japan.
Hazuki NakadaiDepartment of Environmental Sciences, Musashino University, Kōtō-ku, Tokyo, 135-8181, Japan.
Yuh ShiwaDepartment of Molecular Microbiology, Faculty of Life Sciences, Tokyo University of Agriculture, Setagaya, Tokyo, 156-8502, Japan.
Mariko Shimizu-KadotaDepartment of Environmental Systems Sciences, Faculty of Engineering, Musashino University, Kōtō-ku, Tokyo, 135-8181, Japan. mskadota@musashino-u.ac.jp.ORCID http://orcid.org/0000-0003-1050-1207

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveApis mellifera is a species of honeybee that has been introduced around the world as an industrial beekeeping species. Recently, urban beekeeping has attracted attention as a means of ecosystem protection and urban greening. This study aimed to investigate nectar sources of urban beekeeping in Kōtō-ku, Tokyo using pollen DNA metabarcoding.

resultsWe extracted DNA from pollen collected by the honeybees of a local urban beekeeping operation. DNA metabarcoding analysis was carried out by sequencing a part of the rbcL region of the chloroplast genome. A total of 31 samples collected between mid-March, 2018 and mid-October, 2018 yielded 54 operational taxonomic units (OTUs) comprising 14 families, 32 genera, and 8 species. Whereas 5 OTUs were profiled throughout all seasons, 38 OTUs were season-specific (spring, summer, or autumn). Therefore, we were able to infer seasonal nectar sources for the beekeeping operation at the family or genus level, as well as at the species level to a lesser extent. Our pollen-sampling strategy was effective for profiling season-specific nectar sources, with the exception of a few anomalies that can be accounted for by out-of-season flowering associated with artificial gardening and/or pollen accumulation over multiple seasons.

Indexed as

BeekeepingPlant NectarAnimalsBeesDNADNA Barcoding, TaxonomicEcosystemHumansPollenTokyoDNAPlant NectarChloroplastDNA metabarcodingHoneybeeMetagenomeNectar sourceNext generation sequencingPollenRibulose 1,5-bisphosphate carboxylase/oxygenaseUrban beekeeping

Identifiers

PMID33168068
PMCPMC7653823

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.