Insects
Researchers have discovered that distantly related butterflies and moths have used the same two genes, ivory and optix, for more than 120 million years to create similar warning colors on their wings. This finding suggests evolution can follow predictable genetic pathways rather than being entirely random. The study focused on species from South American rainforests.
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Scientists observed a rare tropical katydid changing color from bright pink to green over 11 days in Panama. The transformation helps the insect mimic young rainforest leaves that start pink before maturing green. Researchers describe it as a survival strategy rather than a mutation.
Common air pollutants like ozone alter the chemical scents that ants use to identify colony members, causing them to attack their own nest-mates as intruders. Researchers in Germany exposed ants to realistic levels of ozone and observed aggressive responses upon their return to the colony. This discovery highlights hidden ecological costs of pollution beyond human health.
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A new study shows that termites evolved complex social structures by losing genes rather than gaining them, with monogamy playing a key role. Researchers traced this evolution from cockroach ancestors to massive colonies. The findings challenge assumptions about social complexity in insects.
An international team of researchers has discovered a 151-million-year-old fossil of a non-biting midge in Australia, the oldest known from the Southern Hemisphere. This find, named Telmatomyia talbragarica, reveals freshwater adaptations previously linked only to marine species, suggesting the Chironomidae family originated in Gondwana. The discovery reshapes understanding of ancient insect biogeography.
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Researchers have discovered South America's first amber deposits preserving ancient insects in an Ecuadorian quarry. The 112-million-year-old find from the Hollín Formation offers insights into a prehistoric forest on the supercontinent Gondwana. This rare glimpse reveals a diverse ecosystem from the Cretaceous period.