100-million-year-old fairy shrimp reproduced with out intercourse, uncommon fossils reveal

Ancient feminine fairy shrimp could have gotten alongside simply nice with out males. Researchers learning Cretaceous-period freshwater fossils within the Koonwarra fossil mattress in southern Australia have described a brand new species of now-extinct freshwater shrimp (Koonwarrella peterorum) whose females seemingly reproduced with out intercourse — a phenomenon often known as parthenogenesis, which is a kind of asexual copy.

Parthenogenesis is the spontaneous improvement of an embryo from an unfertilized egg. It’s recognized to happen in each vegetation and animals, though it’s regarded as extraordinarily uncommon. Some species, similar to whiptail lizards, reproduce solely by way of parthenogenesis, however some sexually reproducing species have been recognized to breed parthenogenetically, as within the case of two fatherless California condors reported within the Journal of Heredity in 2021. 

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