SciNat Sept 2025 digest: ecology and molecular biology

Biomolecula published a September 2025 SciNat digest summarizing recent papers from Science and Nature on evolutionary ecology, molecular and cellular biology, and conservation science.

• Main summary: The digest highlights key findings from multiple papers: a global field experiment with 15,018 paper moths across 21 sites on six continents testing warning vs. cryptic coloration; a splicing regulation study identifying RPB9 interaction with U2AF1/2 and defining two cotranscriptional splicing phases; a parental-fasting longevity mechanism in Caenorhabditis elegans mediated by histone HIS-71 moving from intestine to germ cells; the dual Tn-seq (dual transposon sequencing) method (using Cre-lox) applied to Streptococcus pneumoniae to map genetic interactions; and a pollinator conservation study proposing critical habitat thresholds (lowest 6% for hoverflies to highest 37% for butterflies) in agricultural landscapes.
• Background and concrete details: The digest cites primary sources (Science and Nature) and Biomolecula’s related explanatory posts; specifics include 21 experimental sites on six continents, the exact sample size 15,018 for the coloration experiment, the biochemical actors RPB9, U2AF1, U2AF2, the histone HIS-71 translocation in C. elegans, method details dual Tn-seq with Cre-lox for generating double mutants, and the pollinator threshold range 6%–37% for natural habitat required in agricultural landscapes.