In the quiet machinery of a tick's genome, scientists have found the mechanism by which one creature abandoned the ancient bargain of sex and learned to reproduce alone. The Asian longhorned tick, Haemaphysalis longicornis, exists in two coexisting forms — one sexual, one asexual — and researchers have now mapped the genetic architecture that separates them, identifying a single gene family as the apparent keystone of parthenogenetic life. This matters not merely as a curiosity of evolutionary biology, but because the asexual strain spreads a deadly hemorrhagic fever across Asia and has alread
Genomic secrets of asexual tick reproduction revealed through comparative analysis
Haemaphysalis longicornis transmits severe fever with thrombocytopenia syndrome, a disease causing significant morbidity and mortality in Asia, with parthenogenetic strains enabling rapid geographic spread.