The Biological Rulebook Was Just Rewritten—by Ants

A study described in the page says Iberian harvester ant queens produce offspring from two species by cloning males from another lineage. The article presents this as a reproductive strategy called xenoparity and says it helps maintain worker production and a supply of male mates.

It also summarizes other studies on NASA’s exoplanet travel posters, new JWST observations of Saturn, and an algorithm for estimating which ancient river sections were navigable.

Reading notes

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• Iberian harvester ant queens mate within their own species and with M. structor males.
• The queens store and clone that sperm to produce hybrids with M. structor genomes and M. ibericus mitochondria.
• The study says this behavior is unlike anything previously documented in nature and calls it xenoparity.
• The researchers say the queens depend on M. structor males for the worker caste.
• A separate study analyzes NASA’s 2015 Exoplanet Travel Bureau posters as a public-facing way to imagine exoplanets.
• The page says those posters were scientifically informed without pretending to be direct astronomical images.
• JWST observations found dark beads and dark arms in Saturn’s stratosphere and ionosphere.
• The researchers say they do not yet understand how or why those Saturn features are generated.
• Another study builds an algorithm to find flat, calm river stretches and estimate ancient river navigability.
• The method is presented as a first approximation that could guide future research on ancient trade, migration, and social connections.