Spanish freshwater ecosystems are suffering great modification and some macroinvertebrates like Austropotamobius italicus, the white-clawed crayfish, are threatened. This species was once widely distributed in Spain, but its populations have shown a very strong decline over the last thirty years, due to different factors. Three Spanish populations of this crayfish--from different scenarios--wer...

In endangered crayfish conservation projects, it is paramount to map the distribution of causative agent plague, Aphanomyces astaci, in native populations. Considering inapplicability destructive cuticular sampling protocol for monitoring populations, we explored use non-invasive techniques detect this pathogen with molecular assays. present study, exploited environmental DNA (testing increasin...

The possibility of partial replacement fish meal with alfalfa flour in feeds for the Australian red-clawed crayfish (Cherax quadricarinatus) has been investigated. Crayfish were kept aquariums a volume 150 liters at temperature 24-26.5 °C. control group was fed granular feed intended sturgeon fish. In experimental feeds, partially replaced flour. An enzyme preparation, natuzyme, added to one op...

Developing an optimal diet for rearing endangered white-clawed crayfish Austropotamobius pallipes is important captive breeding success prior to wild release. Four ex situ , 40-day experiments assessed survival and growth of fed different treatment diets. Two (A B) were undertaken with hatchlings, determine if live food was essential dietary component during the first few weeks after hatching. ...

In Europe, invasive freshwater crayfish are not only changing ecosystems, but they also leading to local extinctions of native crayfish. This is particularly evident for the populations red swamp and spiny-cheek in northern Italy, which threatening last isolated white-clawed Here, we describe steps that accompanied a successful reintroduction an Italian stream (Park Monte Barro) that, although ...

The white-clawed crayfish (Austropotamobius pallipes) is an emblematic taxon of European rivers, found mainly in oxygenated streams, known to be excellent indicator river quality. Since several decades, the population A. pallipes declined relation anthropogenic pressure, habitat loss, and competition with pests (invasive crayfish, plague). This endangered species now submitted conservation stra...