Fishery research
Research conducted in Sapporo, Japan, has explored the use of fatty acid markers to differentiate between hatchery and wild chum salmon fry in natural environments. The study found significant differences in the fatty acid compositions of hatchery and wild fish, with levels of 18:2n-6 (linoleic acid) being higher in
Fishes
Scientists have long been fascinated by the diversity of body sizes in gobies, with some species reaching lengths of up to a foot and others remaining under an inch. University of Michigan postdoctoral researcher Emily Troyer led a groundbreaking study to investigate the genetic mechanisms controlling body size in these
Fishes
Researchers from the University of Gothenburg have made significant progress in understanding the properties of mucins, a main component of the mucus layer on fish epithelial surfaces. The study found that the glycan-on-membrane assay is the most versatile method for estimating mucin concentration, and that swabs are the most efficient
Fishes
Research conducted by scientists from Northwest A&F University has identified a compound called chlorchinaldol as a potent antiviral agent against fish iridoviruses, including the largemouth bass virus (LMBV) and Singapore grouper iridovirus (SGIV). These viruses pose significant threats to aquaculture industries, resulting in substantial economic losses. The study
Fishes
Recent research has highlighted a concerning rate of Salmonella infection in fish samples from the Pahandut Seberang River in Indonesia. The study, conducted by Universitas Palangka Raya researchers, found that all 14 water, tilapia, and catfish samples tested positive for Salmonella sp. bacteria. This alarming discovery raises concerns about the
Natural resources
Efforts to mitigate the environmental threat posed by historic copper mine tailings, known as stamp sands, to Buffalo Reef in Lake Superior's Grand Traverse Bay have been ongoing for years. Dredging crews initially removed a 25-foot-high bank from the Lake Superior shoreline in 2019, and subsequent harbor dredging
Natural resources
The City of Portland, Michigan's Municipal Dam has submitted a document to the Federal Energy Regulatory Commission, notifying them that the City will not prepare a 2025 report to summarize the activities related to the smolt passage. This decision is based on the fact that there was no
Natural resources
Research conducted by the National Museum of Natural History has provided a comprehensive overview of the species composition and number of specimens of the wrasse family (Labridae) housed in their ichthyological collection. The report highlights the taxonomy of the family, following Nelson (2006), and provides information on the current species
Natural resources
The nearly 300-mile-long Rock River, flowing through Illinois' northwest corner, is home to an unusually robust sturgeon population, specifically the shovelnose sturgeon, which boasts record weights year after year. The Illinois Natural History Survey, led by fisheries ecologist Stefan Tucker, has been studying this phenomenon, with remarkable findings that
Fishes
A new perspective on marine life has emerged through blackwater photography, offering a glimpse into the early life stages of marine fishes and their interactions with other animals. Every night, a massive migration takes place, as deep-sea creatures rise to the surface to feed, providing blackwater divers with an opportunity
Fishes
A new perspective on marine life has emerged through blackwater photography, offering a glimpse into the early life stages of marine fishes and their interactions with other animals. Every night, a massive migration takes place, as deep-sea creatures rise to the surface to feed, providing blackwater divers with an opportunity
Natural resources
The Minnesota Department of Natural Resources (DNR) is currently reviewing the protected slot limit for walleye on Sand Lake, near Squaw Lake, and is seeking public input on whether to modify or extend the existing regulation. The protected slot limit was implemented in 2016 with the goal of creating a
