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Spiral valve parasites of blue and common thresher sharks as indicators of shark feeding behaviour and ecology.
Preti, Antonella; MacKenzie, Ken; Spivey, Kate A; Noble, Leslie R; Jones, Catherine S; Appy, Ralph G; Pierce, Graham J.
Affiliation
  • Preti A; Institute of Marine Studies, University of California Santa Cruz, Santa Cruz, California, USA.
  • MacKenzie K; NOAA Fisheries, Southwest Fisheries Science Center, La Jolla, California, USA.
  • Spivey KA; School of Biological Sciences (Zoology), University of Aberdeen, Aberdeen, UK.
  • Noble LR; School of Biological Sciences (Zoology), University of Aberdeen, Aberdeen, UK.
  • Jones CS; NOAA Fisheries, Southwest Fisheries Science Center, La Jolla, California, USA.
  • Appy RG; Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway.
  • Pierce GJ; School of Biological Sciences (Zoology), University of Aberdeen, Aberdeen, UK.
J Fish Biol ; 97(2): 354-361, 2020 Aug.
Article in En | MEDLINE | ID: mdl-32369188
This study documented the parasite faunas of the spiral valves of blue sharks Prionace glauca (L. 1758) and common thresher sharks Alopias vulpinus (Bonnaterre, 1788) caught in the California Current Large Marine Ecosystem (CCLME) north of the Mexican border. The spiral valves of 18 blue and 19 thresher sharks caught in the CCLME from 2009 to 2013 were examined for parasites. Seven parasite taxa were found in blue sharks and nine in threshers. The tetraphyllidean cestode Anthobothrium sp. (78% prevalence) was the most common parasite in blue sharks, and the phyllobothriid cestode Paraorygmatobothrium sp. (90% prevalence) was the most common in threshers. An adult nematode of the genus Piscicapillaria was found in threshers for the first time and may be a new species. Adult individuals of Hysterothylacium sp. were found in both shark species. The adult acanthocephalan Rhadinorhynchus cololabis and remains of the parasitic copepod Pennella sp. - both parasites of Pacific saury, Cololabis saira - were found in the intestines of threshers, indicating recent feeding on saury. This study paves the way for a more comprehensive examination, including more samples and a wider variety of shark species, to provide a greater understanding of shark feeding behaviour and possibly provide information on shark population biology.
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Full text: 1 Collection: 01-internacional Health context: 3_ND Database: MEDLINE Main subject: Parasitic Diseases, Animal / Sharks / Feeding Behavior / Fish Diseases Type of study: Risk_factors_studies Limits: Animals Country/Region as subject: Mexico Language: En Journal: J Fish Biol Year: 2020 Document type: Article

Full text: 1 Collection: 01-internacional Health context: 3_ND Database: MEDLINE Main subject: Parasitic Diseases, Animal / Sharks / Feeding Behavior / Fish Diseases Type of study: Risk_factors_studies Limits: Animals Country/Region as subject: Mexico Language: En Journal: J Fish Biol Year: 2020 Document type: Article