Evidence map›Paper›PMID 31183151›Full record

ArticleRoyal Society open science2019

Quantification of migrant hoverfly movements (Diptera: Syrphidae) on the West Coast of North America.

Myles H M Menz, Brian V Brown, Karl R Wotton

Abstract read
In one paragraph

Article in Royal Society open science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

15 citing papers in PubMed.

  1. Article
  2. Article
  3. Lords of the flies: dipteran migrants are diverse, abundant and ecologically important.Biological reviews of the Cambridge Philosophical Society · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Citizen Science Mosquito Surveillance by Ad Hoc Observation Using the iNaturalist Platform.International journal of environmental research and public health · 2022
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Pollination by hoverflies in the Anthropocene.Proceedings. Biological sciences · 2020
    Article
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

3 authors.

Myles H M MenzDepartment for Migration and Immuno-Ecology, Max Planck Institute for Ornithology, 78315 Radolfzell, Germany.ORCID 0000-0002-3347-5411
Brian V BrownEntomology Section, Natural History Museum of Los Angeles County, Exposition Boulevard, Los Angeles, CA, USA.
Karl R WottonCentre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn, Cornwall TR10 9FE, UK.ORCID 0000-0002-8672-9948

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The seasonal migration of huge numbers of hoverflies is frequently reported in Europe from mountain passes or spurs of land. The movement of such large numbers of beneficial insects is thought to provide significant ecosystem services in terms of pollination and pest control. Observations from the East Coast of the USA during the 1920s indicate the presence of migratory life histories among some hoverfly species there, but 90 years have now passed since the last reported observation of hoverfly migration in the USA. Here, we analyse video footage taken during a huge northward migration of hoverflies on 20 April 2017 on the West Coast of California. The quantification of migrant numbers from this footage allows us to estimate the passage of over 100 000 hoverflies in half an hour over a 200 m section of headland in Montaña de Oro State Park (San Luis Obispo County). Field collections and analysis of citizen science data indicate different species from the previously reported

Indexed as

Dipterahoverflyinsect migrationpest controlpollinationSyrphidae

Identifiers

PMID31183151
PMCPMC6502382

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.