Scud
Guides
Gammarus locusta
scud
Gammarus locusta is a marine amphipod crustacean in the family Gammaridae, commonly known as a scud. It inhabits coastal and estuarine environments with a cosmopolitan distribution in European waters. The species has been extensively studied as a model organism for ecotoxicology, particularly regarding responses to ocean acidification, warming, deoxygenation, and pharmaceutical contaminants. Research indicates it possesses the ability to biosynthesize or retain essential long-chain polyunsaturated fatty acids, making it of interest for aquaculture applications.
Gammarus mucronatus
scud
Gammarus mucronatus is a small amphipod crustacean first described in 1818. It is a dominant species in salt marsh and estuarine habitats along the North American Atlantic coast and Gulf of Mexico. The species is multivoltine, producing multiple broods per season with overlapping cohorts. It serves as an important food source for fish and other predators while contributing significantly to energy flow and nutrient cycling in coastal ecosystems.
Gammarus seideli
Seidel's Scud
Gammarus seideli is a species of freshwater amphipod in the family Gammaridae, described in 2018. It is one of numerous Gammarus species found in North American freshwater systems. The species is recognized by iNaturalist with the common name "Seidel's Scud" and has been documented in a small number of observations. As a relatively recently described species, detailed ecological and biological information remains limited.