Occurrence of bigheaded carps (Hypophthalmichthys spp.) in the Pearl River Drainage, Louisiana and Mississippi, USA

Transcriptomic comparison of invasive bigheaded carps (Hypophthalmichthys nobilis and Hypophthalmichthys molitrix) and their hybrids

Bighead carp (Hypophthalmichthys nobilis) and silver carp (Hypophthalmichthys molitrix), collectively called bigheaded carps, are invasive species in the Mississippi River Basin (MRB). Interspecific hybridization between bigheaded carps has been considered rare within their native rivers in China; however, it is prevalent in the MRB. We conducted de novo transcriptome analysis of pure and hybri...

Metal Speciation in Particulates in the Mississippi River in Louisiana

Cysts of unknown etiology in fresh and brackish water fishes from the Mississippi River Basin, Louisiana, USA

The prevalence of cysts of unknown etiology (CUE) in fresh/brackish water fishes in the Mississippi River Basin, Louisiana, USA are presented. This constitutes the first report of these bodies in fish outside the marine environment. Notes Cysts of unknown etiology (CUEs) have been reported in the gills of several species of marine fish, predominantly in gadids. The term cyst of unknown etiology...

Nutrient mitigation capacity in Mississippi Delta, USA drainage ditches.

Eutrophication and hypoxia within aquatic systems are a serious international concern. Various management practices have been proposed to help alleviate nutrient loads transported to the Gulf of Mexico and other high-profile aquatic systems. The current study examined the nutrient mitigation capacity of a vegetated (V) and non-vegetated (NV) agricultural drainage ditch of similar size and landf...

Persistence of DNA in Carcasses, Slime and Avian Feces May Affect Interpretation of Environmental DNA Data

The prevention of non-indigenous aquatic invasive species spreading into new areas is a goal of many resource managers. New techniques have been developed to survey for species that are difficult to capture with conventional gears that involve the detection of their DNA in water samples (eDNA). This technique is currently used to track the invasion of bigheaded carps (silver carp and bighead ca...