Alosa[2] is a genus of fish, the river herrings, in the family Alosidae. Along with other genera in the subfamily Alosinae, they are generally known as shads. [3][4] They are distinct from other herrings by having a deeper body and spawning in rivers. Several species can be found on both sides of the Atlantic Ocean and the Mediterranean Sea.

River herring (Alosa spp.) are anadromous fish that enter North American Atlantic coastal rivers and lakes each spring to spawn. Anthropogenic structures such as dams and tide gates serve as physical obstacles that limit river herring access to spawning habitat.

Jan 29, 2021 · River herring (Alosa spp.) are anadromous fish that enter North American Atlantic coastal rivers and lakes each spring to spawn. Anthropogenic structures such as dams and tide gates serve as physical obstacles that limit river herring access to spawning habitat.

Jan 25, 2019 · Populations of the European shads Alosa alosa (Linnaeus, 1758) and Alosa fallax Lacépède, 1800 (Alosa spp.) are protected under legislation because of their vulnerability to human disturbances. In particular, river impoundments block their upstream migration, preventing access to spawning areas.

Nov 19, 2024 · USGS is working to identify an improved fishway entrance design for two at-risk species, blueback herring (Alosa aestivalis) and alewife (Alosa pseudoharengus).

The allis shad (Alosa alosa) is a widespread Northeast Atlantic species of fish in the Alosidae family. It is an anadromous fish which migrates into fresh water to spawn. [1] [3] It is found in the eastern Atlantic Ocean, the western Baltic Sea and the western Mediterranean Sea.

Nov 19, 2024 · Fish Passage Research to Identify the Ideal Fishway Entrance for River Herring (Alosa spp) USGS is working to identify an improved fishway entrance design for two at-risk species, blueback herring ( Alosa aestivalis) and alewife ( Alosa pseudoharengus).

It has been suggested that members of the genus Alosa are hearing specialists with the American shad (Alosa sapidissima) having been found to detect and respond to sounds up to at least 180 kHz (Ref. 89631).

Jan 25, 2019 · Consequently, the aim here was to assess the impact of human disturbances on genetic introgression and population structure of shad in Great Britain through genotyping 119 Alosa spp. using 24...

Jan 1, 2001 · three species (Alosa alosa, Alosa fallax fallax and Alosa fallax rhodanensis) and from several different countries ranging from the eastern Atlantic to the western Mediterranean, were examined...