Robuta

https://pubmed.ncbi.nlm.nih.gov/30772562/?dopt=Abstract A tale of shells and claws: The signal crayfish as a threat to the pearl mussel Margaritifera... The freshwater pearl mussel Margaritifera margaritifera is a highly threatened species in Europe. Several mechanisms may be responsible for the decline in... https://www.usgs.gov/media/images/underwater-image-margaritifera-falcata-western-pearlshell-mussels-a-river-oregon Underwater image of Margaritifera falcata Western Pearlshell mussels in a river in Oregon | U.S.... Western Pearlshell freshwater mussels (Margaritifera falcata) in a river in Oregon, captured underwater during a long-term monitoring snorkel survey to track... https://es.wikipedia.org/wiki/Rhinella_margaritifera Rhinella margaritifera - Wikipedia, la enciclopedia libre wikipedialaenciclopedialibre https://www.fws.gov/species/alabama-pearlshell-margaritifera-marrianae/map Alabama Pearlshell (Margaritifera marrianae) | Map | U.S. Fish & Wildlife Service | FWS.gov u s https://margaritiferamargaritifera.pt/ Margaritifera margaritifera – Medidas de conservação e gestão Margaritifera margaritifera medidasde https://species.wikimedia.org/wiki/Rhinella_margaritifera Rhinella margaritifera - Wikispecies wikispecies