Evidence map›Paper›PMID 29558491›Full record

ArticlePloS one2018

Limitations of learning in the proboscis reflex of the flower visiting syrphid fly Eristalis tenax.

Klaus Lunau, Lina An, Miriam Donda, Michele Hohmann, Leonie Sermon, Vanessa Stegmanns

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
6.6field-weighted citation impact, top 4% of its field
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

13 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Article
  3. Reproductive strategies of two color morphs ofFrontiers in plant science · 2025
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  5. Review
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  9. Nectar mimicry: a new phenomenon.Scientific reports · 2020
    Article
  10. Article
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  12. Article
  13. 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

6 authors at 2 institutions in 2 countries.

Klaus LunauInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.ORCID 0000-0001-5184-4201
Lina AnInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.
Miriam DondaInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.
Michele HohmannInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.
Leonie SermonInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.
Vanessa StegmannsInstitute of Sensory Ecology, Biology Department, Heinrich-Heine-University, Düsseldorf, Germany.
Heinrich Heine University Düsseldorf · DEHebei Agricultural University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flower visiting Eristalis hoverflies feed on nectar and pollen and are known to rely on innate colour preferences. In addition to a preference for visiting yellow flowers, the flies possess an innate proboscis reflex elicited by chemical as well as yellow colour stimuli. In this study we show that the flies' proboscis reflex is only triggered by yellow colour stimuli and not altered by conditioning to other colours. Neither in absolute nor in differential conditioning experiments the flies learned to associate other colours than yellow with reward. Even flies that experienced only blue nutrients during the first four days after hatching could not be trained to extend the proboscis towards other colours than yellow. The natural targets of the visually elicited proboscis reflex are yellow pollen and yellow anthers. One consequence of our findings is that flowers might advertise nectar and pollen rewards for Eristalis hoverflies by a yellow colour hue of nectar guides, nectaries, stamens or pollen. Alternatively, flowers might protect their pollen against Eristalis by displaying other pollen colours than yellow or direct flies by yellow pollen-mimicking floral guides towards nectar resources. Testing the proboscis extension of various hoverfly species in the field showed that only Eristalis hoverflies possess the proboscis reflex elicited by yellow colour hues.

Indexed as

FlowersAnimalsDipteraLearningReflex

Identifiers

PMID29558491
PMCPMC5860702
OpenAlexW2790772387

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.