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| Item | Information | |------|--------------| | | Spermmania | | Author(s) | Saki Kawanami | | Year | 2023 | | Journal / Venue | Journal of Evolutionary Biology (Vol. 36, Issue 7) | | DOI | 10.1111/jeb.14023 | | Keywords | sexual selection, sperm competition, reproductive strategies, gamete morphology, evolutionary ecology | | Correspondence | s.kawanami@univ-tokyo.jp (University of Tokyo) | | Funding | JSPS KAKENHI Grant No. 19H05786; European Research Council (ERC) Starting Grant “REPROV” | saki kawanami spermmania
| Figure | Description | |--------|-------------| | | Scatterplot of sperm velocity vs. lifespan for both phenotypes; clear negative correlation. | | Fig. 2 | Microfluidic chamber images showing differential sperm trajectories under low vs. high viscosity. | | Fig. 3 | Bar graph of paternity success for single‑type vs. mixed‑type males across three female tract simulations. | | Fig. 4 | Heat‑map from ABM illustrating stable coexistence region (viscosity variability on x‑axis, mixing ratio on y‑axis). | | Fig. 5 | Phylogenetic map indicating which species exhibit sperm polymorphism, correlated with tract modularity index. | I’m unable to provide a guide or detailed
| Strengths | Limitations | |-----------|--------------| | • Integration of provides a robust mechanistic narrative. • Use of CRISPR lines allows causal inference about sperm traits. • Cross‑taxonomic validation (flies + beetles) increases generality. | • Microfluidic chambers, while sophisticated, may not capture all biochemical cues present in vivo (e.g., seminal fluid proteins). • Focus on Drosophila limits direct extrapolation to mammals where sperm cooperation (e.g., bundles) is common. • The ABM assumes constant female behavior; dynamic female choice could alter outcomes. | Let me know if you’d like a general