Anisakidae of beluga (Delphinapterus leucas) from the Hudson Bay
Katarzyna Karpiej , Manon Simard , Julia Osewska , Zenon Sołtysiak , Jerzy Rokicki
AbstractBeluga (Delphinapterus leucas Pallas, 1776) is a marine mammal living in the Arctic and subarctic waters. This species feeds mainly on fish, krill and other crustaceans (Copepoda, Amphipoda, Decapoda). Beluga is the final host for nematodes of the Anisakidae family. Anisakidae are parasites of marine organisms and are found in many geographical areas. The first intermediate hosts for Anisakidae are crustaceans, the second are fish, and the parasites reach sexual maturity in birds and marine mammals. In our study 190 nematodes were collected from stomachs of 11 belugas harvested by northern Quebec Inuit. The material came from the Arctic regions of the Hudson Bay and Hudson Strait, northern Quebec. All belugas were infected, with an intensity of infection of 1–52 specimens. Morphologically, we identified three species: Pseudoterranova decipiens s. l., Anisakis simplex s. l. and Contracaecum osculatum s. l. Molecular analysis allowed us to detect sibling species. Using the PCR-RFLP method (restriction enzymes RsaI, TaqI, HhaI and XbaI), we identified four species: Pseudoterranova bulbosa, Anisakis simplex s. s. and Contracaecum osculatum C and A. We noted three developmental stages: L3 (159 individuals), L4 (16 individuals) and adults (15 individuals – 11 males and 4 females). Beluga is predominantly the definitive host for. P. decipiens s. l. (prevalence 72%), C. osculatum s. l. (45.5%) and, to a lesser extent, A. simplex s. l. (36%).
|Journal series||Annals of Parasitology, ISSN 2299-0631, e-ISSN 2300-6706, (B 15 pkt)|
|Publication size in sheets||0.3|
|Conference||XXIIIth Congress of the Polish Parasitological Society, 04-09-2013 - 07-09-2013, Szklarska Poręba-Piechowice, Polska|
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