Spiral valve parasites of blue and common thresher sharks as indicators of shark feeding behaviour and ecology.

摘要: This study documented the parasite faunas of spiral valves blue sharks Prionace glauca (L. 1758) and common thresher Alopias vulpinus (Bonnaterre, 1788) caught in California Current Large Marine Ecosystem (CCLME) north Mexican border. The 18 19 CCLME from 2009 to 2013 were examined for parasites. Seven taxa found nine threshers. tetraphyllidean cestode Anthobothrium sp. (78% prevalence) was most sharks, phyllobothriid Paraorygmatobothrium (90% An adult nematode genus Piscicapillaria threshers first time may be a new species. Adult individuals Hysterothylacium both shark acanthocephalan Rhadinorhynchus cololabis remains parasitic copepod Pennella - parasites Pacific saury, Cololabis saira intestines threshers, indicating recent feeding on saury. paves way more comprehensive examination, including samples wider variety species, provide greater understanding behaviour possibly information population biology.