ArticleCells2021
Apical Sperm Hook Morphology Is Linked to Sperm Swimming Performance and Sperm Aggregation in
Article in Cells, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 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
12 citing papers in PubMed, 21 citations in OpenAlex.
- Testis-specific lncRNA Teshl regulates acrosome biogenesis to maintain sperm structure and function.Cell & bioscience · 2026Article
- PRSS38 Is a Novel Sperm Serine Protease Involved in Human and Mouse Fertilization.International journal of molecular sciences · 2025Article
- Mating system variation and gene expression in the male reproductive tract of Peromyscus mice.Molecular ecology · 2025Article
- Sperm competition intensity shapes divergence in both sperm morphology and reproductive genes across murine rodents.Evolution; international journal of organic evolution · 2024Article
- Article
- The evolution of centriole degradation in mouse sperm.Nature communications · 2024Article
- Article
- Evolution in reproductive tempo and investment across the Peromyscus radiation.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2023Review
- On the Origin and Evolution of Sperm Cells.Cells · 2022Article
- Flagellum tapering and midpiece volume in songbird spermatozoa.Journal of morphology · 2022Article
- Energy Metabolism and Hyperactivation of Spermatozoa from Three Mouse Species under Capacitating Conditions.Cells · 2022Article
- Postcopulatory sexual selection is associated with sperm aggregate quality inBehavioral ecology : official journal of the International Society for Behavioral EcologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Mammals exhibit a tremendous amount of variation in sperm morphology and despite the acknowledgement of sperm structural diversity across taxa, its functional significance remains poorly understood. Of particular interest is the sperm of rodents. While most Eutherian mammal spermatozoa are relatively simple cells with round or paddle-shaped heads, rodent sperm are often more complex and, in many species, display a striking apical hook. The function of the sperm hook remains largely unknown, but it has been hypothesized to have evolved as an adaptation to inter-male sperm competition and thus has been implicated in increased swimming efficiency or in the formation of collective sperm movements. Here we empirically test these hypotheses within a single lineage of
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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.