Facts about Whale Parasites
- 09
Lernaeocera branchialis parasitic copepods can reduce oxygen absorption in whale gills by blocking water flow, potentially forcing infected cetaceans to surface more frequently for breathing.
- 08
Cryptoniscus larvae parasitize whale lice before the lice mature, with these microscopic internal parasites potentially reducing host reproduction by competing for nutrients during development.
- 07
Anisakis nematodes, acquired when whales consume infected prey fish, can perforate the intestinal walls of fin and blue whales, leading to peritonitis and fatal infections.
- 06
In 2015, researchers identified Crassicauda parasitic nematodes lodged in the blubber and muscle tissue of sperm whales, with some infections causing localized abscesses exceeding 10 centimeters in diameter.
- 05
Parasitic copepods of the genus Lepeophtheirus can reduce a wild salmon's gill function by up to 30 percent, and similar copepod species parasitizing whale calves can stunt their growth during critical nursing periods.
- 04
Stomach parasites like nematodes and cestodes infect baleen whales through their diet of krill and fish, with some individuals harboring over 100,000 individual worms in their digestive systems.
- 03
Branchellion parasitic leeches attach to whale skin and feed on blood, with some species producing anticoagulant saliva that can cause prolonged bleeding in their cetacean hosts.
- 02
Whale lice species in the genus Cyamus can number over 450,000 individual parasites on a single gray whale, weighing up to 136 kilograms collectively.
- 01
The parasitic copepod Penella infestation can penetrate whale skin up to 30 centimeters deep, creating massive external lesions on humpback and right whales.