Processing of an antibacterial peptide from hemocyanin of the freshwater crayfish Pacifastacus leniusculus.

Intensive removal of signal crayfish (Pacifastacus leniusculus) from rivers increases numbers and taxon richness of macroinvertebrate species

Invasive species are a major cause of species extinction in freshwater ecosystems, and crayfish species are particularly pervasive. The invasive American signal crayfish Pacifastacus leniusculus has impacts over a range of trophic levels, but particularly on benthic aquatic macroinvertebrates. Our study examined the effect on the macroinvertebrate community of removal trapping of signal crayfis...

Crayfish occupancy and abundance in lakes of the Pacific Northwest, USA

Crayfish are ecologically important in freshwater ecosystems, but few investigators have evaluated landscape patterns of their prevalence and abundance in temperate lakes. We report results of a crayfish survey for 100 lakes in the Puget Sound lowlands of Washington State (USA) serving as a census of the distributions of the signal crayfish Pacifastacus leniusculus and previously unknown popula...

Experimental infection of white spot syndrome virus in freshwater crayfish Pacifastacus leniusculus.

The signal freshwater crayfish Pacifastacus leniusculus was found to be susceptible to infection with white spot syndrome virus (WSSV). Histopathological observations of various tissues of virus-injected crayfish showed similar symptoms to those from WSSV-infected penaeid shrimp, but no appearance of white spots on the cuticle or reddish body colour were observed, although these are the promine...

Phylogenetic species delimitation for crayfishes of the genus Pacifastacus.

Molecular genetic approaches are playing an increasing role in conservation science by identifying biodiversity that may not be evident by morphology-based taxonomy and systematics. So-called cryptic species are particularly prevalent in freshwater environments, where isolation of dispersal-limited species, such as crayfishes, within dendritic river networks often gives rise to high intra- and ...

Pacifastacus leniusculus Freshwater Crayfish Protein, a Masquerade-Like Protein, in the Characterization of a Pattern Recognition