The salmon louse is a species of copepod in the genus Lepeophtheirus. It is a sea louse, a parasite living mostly on salmon, particularly on Pacific and Atlantic salmon and sea trout, but is also some
Salmonlouse
Nuclear DNA content of salmon louse. Flow cytometry histograms of fluorescent stained (Propidium Iodide, PI) cells of salmon louse mixed with chicken erythrocytes (CEN) and human mono-nucleated cells (MCN) used as internal reference standards. Fluorescence (FL) peaks values on the X-axis are reported in arbitrary units expressed as fluorescence channel numbers (FL value). Values on the Y-axis (counts) refer to the number of nuclei counted per channel. pg= picograms of DNA (haploid, 1C).
Diatoms through the microscope
Fish go through various life stages between fertilization and adulthood. The life of fish start as spawned eggs which hatch into immotile larvae. These larval hatchlings are not yet capable of feeding
Salmon louse
…fish and are not harmful to humans. Salmon lice are ectoparasites of salmon. In the 1980s, high levels of salmon lice were observed on pink salmon smolts. Salmon lice are found in the Pacific and Atlantic Oceans; they infect pink salmon, Atlantic salmon, and chum salmon. Some research has occurred on the…
Fry no longer depend on a yolk-sac and can feed themselves
A fingerling has developed scales and working fins
Salmon eggs. The growing larvae can be seen through the transparent egg envelope. The black spots are the eyes.
Salmon egg hatching into a sac fry. In a few days, the sac fry will absorb the yolk sac and become a salmon fry