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Records of Cestodes from Chilean Sharks

1974; American Society of Parasitologists; Volume: 60; Issue: 1 Linguagem: Inglês

10.2307/3278674

1937-2345

Juan Carvajal,

Aquatic life and conservation

Thirteen species of cestodes, including a new species of Prochristianella, are recorded from 6 of 11 species of Chilean sharks. Most of the cestodes were found in the same or closely related hosts as those previously reported from other localities. Several new host records are presented. Knowledge of cestodes from Chilean sharks is limited to only two references, Yafiez (1950) and Carvajal (1971), both concerning trypanorhynchans. In this report 13 species from Chilean sharks are recorded. Among these, Prochristianella musteli is new, whereas the remaining species have been reported in the literature from the same or closely related hosts. The sharks examined were collected from 1967-72, either by trawl nets of commercial fishing boats, operating from Papudo to Talcahuano, Chile, or from fishermen at San Antonio, Coquimbo, Antofagasta, and Archipielago de los Chonos. MATERIALS AND METHODS Whenever possible, the specimens were examined alive in seawater and relaxed in 10% magnesium chloride solution; they were then fixed and stained by methods already described (Carvajal and Goldstein, 1969, 1971). Drawings were made with the aid of a Leitz drawing tube. The tetraphyllideans from Mustelus mento were examined by Dr. Louis Euzet at the University of Montpellier, who corroborated my identifications. Measurements of the new species are in microns, unless otherwise indicated.