Bear Creek is a tributary of the Tennessee River in northwestern Alabama and northeastern Mississippi. The watershed supports diverse freshwater mussel assemblage including several species conservation concern. We conducted survey at 55 sites Mississippi portions its largest tributary, Cedar Creek, during September October 2020. found total 30 species, which 25 were represented by live individu...

Little is known about the current state of freshwater biodiversity in Canada, one countries with greatest amount surface waters world. To address this knowledge gap, we compiled a list all available assessments conservation status for species (over 3000 taxa) and further evaluated overall six distinct taxonomic groups, focusing on organisms reliant fresh (i.e., aquatic plants, invertebrates (wi...

The present study examined the effect of dissolved organic carbon (DOC), both added and inherent, on Cu toxicity in glochidia, the larvae of freshwater mussels. Using incremental additions of natural DOC concentrate and reconstituted water, a series of acute copper toxicity tests were conducted. An increase in DOC from 0.7 to 4.4 mg  C/L resulted in a fourfold increase (36-150 µg Cu/L) in the 2...

Recent freshwater mussel research has resulted in rediscovery of several species presumed extinct. We report the Amblema plicata (Say, 1817) 2019 from Choctawhatchee River, Florida, USA. not been reported river basin since 1958, more than 61 years ago. This was collected during long-term monitoring mussels Florida streams. provide genetic confirmation our voucher identification using a DNA barc...

The overuse of pesticides has been increasing since the 20th century. Depending on this use, non-target organisms are also affected apart from target organisms. Cyfluthrin is a synthetic pyrethroid pesticide used in agriculture, domestic and veterinary medicine against insects. It may affect aquatic as result mixing with ecosystems. This study was aimed to investigate effect cyfluthrin freshwat...

Freshwater mussel species with doubly uniparental inheritance (DUI) of mtDNA are unique because they are naturally heteroplasmic for two extremely divergent mtDNAs with ~50% amino acid differences for protein-coding genes. The paternally-transmitted mtDNA (or M mtDNA) clearly functions in sperm in these species, but it is still unknown whether it is transcribed when present in male or female so...

Conservation of ecosystem engineers, which modulates the surrounding habitat by causing physical state changes in biotic or abiotic materials, is important for maintaining functional integrity ecosystems. This study examined effects endangered freshwater pearl mussels (Margaritifera laevis and M. togakushiensis) on channel morphology flow a low-gradient sandy river. For this, we performed field...

Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and...

The use of aquatic invertebrates in biomedical research and as environmental sentinels has dramatically grown in recent decades, with an increased need in understanding of comparative pathology. The Unionids freshwater mussels are a group of worldwide distributed bivalves residing small ditches and ponds, lakes, canals and rivers, often used as animal test in eco-toxicological studies. Once one...