Ƙirƙirar wani nau'i mai rikitarwa na wannan jumla Tun daga shekarun 1970s, yawan haɓakawa tsakanin pallid da shovelnose ya karu.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Tun daga shekarun 1970s, yawan nau'in hybridization tsakanin pallid da shovelnose sun karu kuma wannan ya danganta da canje-canje a cikin Mississippi da Missouri Rivers, tilasta wa sturgeons zuwa yankunan da suke da damar da za su fuskanci shovelnose sturgeons. "