Although Clostridium perfringens Type B is not considered a significant problem in the U.S.A., immunity may be provided against the beta and epsilon toxins elaborated by Cl. perfringens Type B. The immunity is derived from the combination of Type C (beta) and Type D (epsilon) fractions.
What do sea lampreys eat? A: Sea lampreys feed off the blood of large fish, including trout, salmon, whitefish, carp, catfish and sturgeon. The sea lamprey is native to the Atlantic Ocean but infiltrated the Great Lakes region in the 1920s and '30s during canal construction.
October 25, 2006. Add the lamprey to the list of living fossils.. A 1.7-inch (4.2-centimeter) fossilized specimen found in an ancient South African lagoon shows that the bloodsucking, eel-like fish hasn't changed much in 360 million years, according to a new study to be published tomorrow in the journal Nature. Enlarge Photo.