ArticleScientific reports2026
Assessing cranial morphology for sex determination in juvenile alpine swifts (Tachymarptis melba).
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The cranial morphology of juvenile alpine swift (Tachymarptis melba), a species adapted for an aerial lifestyle, has received limited attention. This study examined skull shape and size variation in 100 juveniles (57 females, 43 males), collected from 2020 to 2024 at Istanbul University-Cerrahpaşa after natural death. Using 3D scanning and 18 landmarks, we applied Procrustes ANOVA and principal component analysis (PCA) to assess the effects of sex, centroid size, body weight, and cranial length. Sex significantly influenced skull shape but not size. Centroid size showed no significant effect on shape in females or males. Body weight significantly impacted shape, more so in males than in females, whereas cranial length had no effect. PCA revealed minor sex-based shape differences along PC1, though not statistically significant. These results indicate subtle sexual dimorphism in juvenile skull shape, driven partly by weight, with no variation in size. This work highlights the role of early developmental factors in rapid morphological development, setting the stage for further ontogenetic studies.
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.