<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo Kusukela ngawo-1970, izinga lokuhlanganiswa phakathi kwe-pallid ne-shovelnose liye landa.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yalesi sigwebo ithi Kusukela ngawo-1970, amazinga okuhlanganiswa phakathi kwe-pallid ne-shovelnose akhuphukile futhi lokhu kubangelwa izinguquko eMifula iMississippi neMissouri, okuphoqa ama-pallid sturgeon ezindaweni lapho anethuba elikhulu lokuhlangana nama-shovelnose sturgeon. 