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.
Some small salamanders are known to feed on insect larvae and invertebrates including Daplmin water fleas. Larval salamanders are known to eat themselves in captivity or when theyâre present in large numbers. Ambush Feeders. Hellbender and aquatic giant salamanders primarily feed on crayfish, small salamanders, and fish. They ambush their prey from beneath the log or rock.