ArticleThe Journal of experimental biology2010
Molecular evidence for color discrimination in the Atlantic sand fiddler crab, Uca pugilator.
Article in The Journal of experimental biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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.
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.
Who cites it
16 citing papers in PubMed, 48 citations in OpenAlex.
- Claw coloration in the fiddler crabCurrent zoology · 2025Article
- Secondary not subordinate: Opsin localization suggests possibility for color sensitivity in salticid secondary eyes.Vision research · 2024Article
- The diversity of invertebrate visual opsins spanning Protostomia, Deuterostomia, and Cnidaria.Developmental biology · 2022Review
- Crustacean conundrums: a review of opsin diversity and evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Review
- The visual pigment xenopsin is widespread in protostome eyes and impacts the view on eye evolution.eLife · 2020Article
- Exceptional diversity of opsin expression patterns inProceedings of the National Academy of Sciences of the United States of America · 2020Article
- Co-expression of xenopsin and rhabdomeric opsin in photoreceptors bearing microvilli and cilia.eLife · 2017Article
- Determination of the Genetic Architecture Underlying Short Wavelength Sensitivity in Lake Malawi Cichlids.The Journal of heredity · 2017Article
- Unique Temporal Expression of Triplicated Long-Wavelength Opsins in Developing Butterfly Eyes.Frontiers in neural circuits · 2017Article
- Extraordinary diversity of visual opsin genes in dragonflies.Proceedings of the National Academy of Sciences of the United States of America · 2015Article
- Opsins in Limulus eyes: characterization of three visible light-sensitive opsins unique to and co-expressed in median eye photoreceptors and a peropsin/RGR that is expressed in all eyes.The Journal of experimental biology · 2015Article
- How aquatic water-beetle larvae with small chambered eyes overcome challenges of hunting under water.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2014Review
- Systematic variations in microvilli banding patterns along fiddler crab rhabdoms.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2013Article
- The Antarctic krill Euphausia superba shows diurnal cycles of transcription under natural conditions.PloS one · 2013Article
- Coexpression of three middle wavelength-absorbing visual pigments in sexually dimorphic photoreceptors of the butterfly Colias erate.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2012Article
- Opsin evolution and expression in arthropod compound eyes and ocelli: insights from the cricket Gryllus bimaculatus.BMC evolutionary biology · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
Fiddler crabs are intertidal brachyuran crabs that belong to the genus Uca. Approximately 97 different species have been identified, and several of these live sympatrically. Many have species-specific body color patterns that may act as signals for intra- and interspecific communication. To understand the behavioral and ecological role of this coloration we must know whether fiddler crabs have the physiological capacity to perceive color cues. Using a molecular approach, we identified the opsin-encoding genes and determined their expression patterns across the eye of the sand fiddler crab, Uca pugilator. We identified three different opsin-encoding genes (UpRh1, UpRh2 and UpRh3). UpRh1 and UpRh2 are highly related and have similarities in their amino acid sequences to other arthropod long- and medium-wavelength-sensitive opsins, whereas UpRh3 is similar to other arthropod UV-sensitive opsins. All three opsins are expressed in each ommatidium, in an opsin-specific pattern. UpRh3 is present only in the R8 photoreceptor cell, whereas UpRh1 and UpRh2 are present in the R1-7 cells, with UpRh1 expression restricted to five cells and UpRh2 expression present in three cells. Thus, one photoreceptor in every ommatidium expresses both UpRh1 and UpRh2, providing another example of sensory receptor coexpression. These results show that U. pugilator has the basic molecular machinery for color perception, perhaps even trichromatic vision.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.