ArticleScientific reports2016
Stiffness gradient of the beetle penis facilitates propulsion in the spiraled female spermathecal duct.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 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
10 citing papers in PubMed.
- Correlated evolution of elaborate intromission mechanics during copulation between the sexes in leaf beetles.Journal of the Royal Society, Interface · 2025Article
- The evolution of conglobation in Ceratocanthinae.Communications biology · 2022Article
- Mechanical properties of a female reproductive tract of a beetle and implications for penile penetration.Proceedings. Biological sciences · 2021Article
- Penetration mechanics of elongated female and male genitalia of earwigs.Scientific reports · 2021Article
- Resilin Distribution and Sexual Dimorphism in the Midge Antenna and Their Influence on Frequency Sensitivity.Insects · 2020Article
- Functional significance of graded properties of insect cuticle supported by an evolutionary analysis.Journal of the Royal Society, Interface · 2020Article
- Material stiffness variation in mosquito antennae.Journal of the Royal Society, Interface · 2019Article
- A simple, high-resolution, non-destructive method for determining the spatial gradient of the elastic modulus of insect cuticle.Journal of the Royal Society, Interface · 2018Article
- Penetration mechanics of a beetle intromittent organ with bending stiffness gradient and a soft tip.Science advances · 2017Article
- Stiffness distribution in insect cuticle: a continuous or a discontinuous profile?Journal of the Royal Society, Interface · 2017Article
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.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It is well known that sexual selection is the main driving force of substantial diversity of genitalia found in animals. However, how it facilitates the diversity is still largely unknown, because genital morpho/physical features and motions/functional morphology of the structures in sexual intercourse are not linked for the vast majority of organisms. Here we showed the presence of material gradient and numerically studied an effect of stiffness gradient of the beetle penis during its propulsion through the female duct. We found that stiffness gradient on the penis essentially affects its propulsion. Microscopic investigation suggests the possibility that the tip of the hyper-elongated penis is softer than the rest of it, and our numerical model confirms that this type of distribution of stiffness gradient aids in faster propulsion than other types. This result indicates that previously ignored physical properties of genital materials are of crucial importance in evolutionary studies of genitalia.
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.