Unger Patrick, Neubert Kilian, Palm Harry W
Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany.
Acta Parasitol. 2018 Mar 26;63(1):99-105. doi: 10.1515/ap-2018-0011.
A total of 35 common garfish, Belone belone (Linnaeus, 1761), were studied for metazoan parasites on their spawning grounds in the western Baltic Sea. Nine parasite species were found, and six new locality records could be established for German coastal waters (Axine belones, Monogenea; Proteocephalus sp., Cestoda; Anisakis simplex (s.s.), Contracaecum rudolphii A and Hysterothylacium aduncum, Nematoda; Echinorhynchus gadi, Acanthocephala). For the first time, the marine ectoparasite A. belones was recorded from the gills of garfish inside the Baltic Sea, indicating its ability to survive the spawning migration as well as the brackish water conditions at its reproduction grounds. This is alike the endohelminth A. simplex (s.s.), that was identified by molecular analyses of the internal transcribed spacer (ITS-1, 5.8S, ITS-2) region. Almost all isolated metazoans were parasites commonly recorded from the northeast Atlantic Ocean and the North Sea. The lower number of typical generalist Baltic Sea parasites indicates the rapid migration of common garfish onto the spawning grounds, reducing the access and uptake of these species.
对波罗的海西部产卵场的35条欧洲长颌鱼（Belone belone，林奈，1761年）进行了后生动物寄生虫研究。共发现9种寄生虫，其中6种在德国沿海水域有新的分布记录（单殖吸虫Axine belones；绦虫Proteocephalus sp.；线虫简单异尖线虫（狭义）、鲁道夫对盲囊线虫A和钩状异唇线虫；棘头虫多棘吻棘头虫）。首次在波罗的海内部的长颌鱼鳃上记录到海洋外寄生虫Axine belones，这表明它能够在产卵洄游以及繁殖地的微咸水条件下生存。这与通过内转录间隔区（ITS-1、5.8S、ITS-2）区域的分子分析鉴定出的内寄生线虫简单异尖线虫（狭义）情况类似。几乎所有分离出的后生动物都是常见于东北大西洋和北海的寄生虫。典型的波罗的海广适性寄生虫数量较少，这表明长颌鱼迅速洄游到产卵场，减少了这些寄生虫物种的接触和感染机会。
