Nematode parasites of rockfish (Sebastes spp.) and cod (Gadus spp.) from waters near Kodiak Island Alaska, USA ...

• Main Authors: Belk, Mark, Oguz, Mehmet, Bennett, Samuel, Campbell, Andrea
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS Biological sciences; Cramer; Pacific; alaska pollock; Kodiak; Alaska
• Online Access: https://dx.doi.org/10.5061/dryad.rbnzs7hc0; https://datadryad.org/stash/dataset/doi:10.5061/dryad.rbnzs7hc0

Distribution and abundance of common parasitic nematodes in marine fishes is not well documented in many geographic regions. Understanding the influence of large-scale environmental changes on infection rates of fish by nematodes requires quantitative assessments of parasite abundance for multiple host species. We collected samples of two species of cod and eight species of rockfish (total of 232 specimens) from waters near Kodiak Island, Alaska, USA during Spring and Summer of 2015, and dissected and recorded all internal nematode parasites. We quantified the prevalence and intensity of nematode parasites in the ten host species, and tested for differences in prevalence among host species. We found three species of nematode: Anisakis simplex, sensu lato (Van Thiel), Pseudoterranova decipiens, sensu lato (Krabbe), and Hysterothylacium sp. (Ward and Magath). Eighty-two percent of the examined fish were infected with at least one parasitic nematode. The overall prevalence of P. decipiens, A. simplex, and ... : Kodiak Island is a large island off the coast of southeastern Alaska, USA. The island is home to the largest fishing port in Alaska, and is one of the largest fishery ports in the USA. We examined a total of 232 fish of ten species as follows: Pacific ocean perch, Sebastes alutus (Gilbert; n = 20; May 2015); silvergray rockfish, S. brevispinis (Bean; n = 20; June 2015); dark rockfish, S. ciliatus (Tiliesius; n = 49; May, August, September 2015); black rockfish, S. melanops (Girard; n = 23; June 2015); northern rockfish, S. polyspinis (Taranets and Mosiev; n = 20; May, June 2015); redstripe rockfish, S. proriger (Jordan and Gilbert; n = 20; June, July 2015); yelloweye rockfish, S. ruberrimus (Cramer; n = 20; June, July 2015); harlequin rockfish, S. variegatus (Quast; n = 20; June 2015); Pacific cod, Gadus macrocephalus (Tilesius; n = 20; September 2015); and Alaska pollock, Gadus chalcogrammus (Pallas; n = 20; September 2015). We purchased specimens of nine of the ten species from the local fish processing ...