The finding of plerocercoid
larvae of Diphyllobothriidae Luhe, 1910 (Cestoda) in Peruvian sea fish.
larvae of an unknown cestode species, and the nematode Hysterothylacium aduncum were observed too infrequently (<4% prevalence in all samples) to be considered useful as biological tags (see MacKenzie and Abaunza, 1998).
4 and 5): 1) copepods were infected by ingestion of eggs deposited in the bottom debris producing procercoid larvae (first larval stage) in the hemocoel of these hosts and 2) tadpoles ingested these infected copepods and plerocercoid
larvae (second larval stage) developed in the body cavity and associated tissues of these hosts.
To the Editor: Sparganosis is a parasitic zoonosis caused by invasion of the spargana, the plerocercoid
larvae of various diphyllobothroid tapeworms belonging to the genus Spirometra (1).
To the Editor: Sparganosis is a worldwide parasitic zoonosis caused by infection with spargana, the plerocercoid
larvae of various diphyllobothroid tapeworms belonging to the genus Spirometra (1-3).
To the contrary, an investigation of mature masu salmon captured in the rivers in Hokkaido showed a plerocercoid
infection rate of 20%, although no plerocercoids
were found in masu salmon juveniles that stayed in the rivers for 1.
larvae in the fish muscles are easily missed during food preparation.
latum is transmitted to humans by plerocercoid
larvae present in fish meat and visceral organs (www.
Concentrations of some heavy metals in Ligula intestinalis plerocercoids
(Cestodes) and Philometra ovate (nematodes) compared to some of their hosts (Osteichthyes).