Evidence map›Paper›PMID 25424626›Full record

ArticleBMC evolutionary biology2014

Sexual dimorphism and natural variation within and among species in the Drosophila retinal mosaic.

Maarten Hilbrant, Isabel Almudi, Daniel J Leite, Linta Kuncheria, Nico Posnien, Maria D S Nunes, Alistair P McGregor

Open access · goldAbstract read
In one paragraph

Article in BMC evolutionary biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.8field-weighted citation impact, top 33% 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

20 citing papers in PubMed, 42 citations in OpenAlex.

  1. Sexual dimorphism in the complete connectome of thebioRxiv : the preprint server for biology · 2025
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  7. Stable flies sense and behaviorally respond to the polarization of light.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023
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  14. Horsefly object-directed polarotaxis is mediated by a stochastically distributed ommatidial subtype in the ventral retina.Proceedings of the National Academy of Sciences of the United States of America · 2019
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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

7 authors at 3 institutions in 2 countries.

Maarten Hilbrant
Isabel Almudi
Daniel J Leite
Linta Kuncheria
Nico Posnien
Maria D S Nunes
Alistair P McGregor
Oxford Brookes University · GBUniversity of Cologne · DEUniversity of Göttingen · DE

Funding

European Research Council 242553
6 · The paper itself

Abstract

backgroundInsect compound eyes are composed of ommatidia, which contain photoreceptor cells that are sensitive to different wavelengths of light defined by the specific rhodopsin proteins that they express. The fruit fly Drosophila melanogaster has several different ommatidium types that can be localised to specific retinal regions, such as the dorsal rim area (DRA), or distributed stochastically in a mosaic across the retina, like the 'pale' and 'yellow' types. Variation in these ommatidia patterns very likely has important implications for the vision of insects and could underlie behavioural and environmental adaptations. However, despite the detailed understanding of ommatidia specification in D. melanogaster, the extent to which the frequency and distribution of the different ommatidium types vary between sexes, strains and species of Drosophila is not known.

resultsWe investigated the frequency and distribution of ommatidium types based on rhodopsin protein expression, and the expression levels of rhodopsin transcripts in the eyes of both sexes of different strains of D. melanogaster, D. simulans and D. mauritiana. We found that while the number of DRA ommatidia was invariant, Rh3 expressing ommatidia were more frequent in the larger eyes of females compared to the males of all species analysed. The frequency and distribution of ommatidium types also differed between strains and species. The D. simulans strain ZOM4 has the highest frequency of Rh3 expressing ommatidia, which is associated with a non-stochastic patch of pale and odd-coupled ommatidia in the dorsal-posterior of their eyes.

conclusionsOur results show that there is striking variation in the frequency and distribution of ommatidium types between sexes, strains and species of Drosophila. This suggests that evolutionary changes in the underlying regulatory mechanisms can alter the distribution of ommatidium types to promote or restrict their expression in specific regions of the eye within and between species, and that this could cause differences in vision among these flies.

Indexed as

AnimalsBiological EvolutionCompound Eye, ArthropodDrosophilaDrosophila melanogasterDrosophila ProteinsFemaleMaleRetinaSensory RhodopsinsSex CharacteristicsSpecies SpecificityDrosophila ProteinsSensory Rhodopsins

Identifiers

PMID25424626
PMCPMC4268811
OpenAlexW2103791965

What OpenQuestion holds

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LicenceCC BY
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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.