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Male Spiders Sacrifice Themselves for Love | Adelaide News
Description
Male redback spiders deliberately leap into their mate’s mouth—a bizarre, self-sacrificing act that boosts sperm delivery—thanks to a genetic link tied to their sex chromosomes. This extreme mating ritual, unique among spiders, reveals how specific genes can drive dramatic evolutionary behaviors. Unlike their close relative, the katipō, which avoids such cannibalism, hybrid studies confirm the somersault is hereditary—but not every part of the ritual is. The discovery could help protect endangered katipō from extinction by understanding how hybridization threatens their survival.
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