Marine parasite communities can exhibit temporal and spatial changes in response to seasonal and local variations in several biotic and abiotic environmental factors. Limited attention has been given to the influence of abiotic factors, so their effects on parasite community structure remain unclear. A total of 496 specimens of Euthynnus lineatus were collected over a 7‐year period (2012–2018) from Acapulco Bay, Mexico. Their parasite communities were analyzed to determine if they experience interannual variations due to local biotic and abiotic factors. Thirty‐three metazoan parasite species were recovered and identified: four species of Monogenea (adults); 16 of Digenea (one larvae and 15 adults); two of Acanthocephala (adults); two of Cestoda (larvae); three of Nematoda (two larvae and one adult); and six of Crustacea (three Copepoda, and three Isopoda). Species richness was greatest among the digeneans, which represented 48% of the total species recovered, followed by the crustaceans (19% of total species). Species richness at the component community level (14–24 species) was similar to reported richness in other small tuna species. The component communities and infracommunities of E. lineatus exhibited a similar pattern: high species richness and diversity, and numerical dominance by a single species, mainly by one of the didymozoids Allopseudocolocyntotrema claviforme or Pseudocolocyntotrema yaito. Parasite community structure and species composition varied among sampling years. Variations were possibly caused by a combination of abiotic and biotic factors which generated notable changes in the infection levels of several component species during the study period. These communities may therefore be unpredictable in terms of structure and species composition, as has been suggested for other communities of marine parasites.

中文翻译：

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黑色skip鱼后生动物寄生虫群落年际变化的相关因素（双鱼座：Scombridae）

海洋寄生虫群落可表现出时空变化，以响应几种生物和非生物环境因素的季节性和局部变化。非生物因素的影响已得到了有限的关注，因此它们对寄生虫群落结构的影响仍不清楚。共有496个Euthynnus lineatus标本历时7年（2012-2018年）从墨西哥阿卡普尔科湾收集。对它们的寄生虫群落进行了分析，以确定它们是否由于局部生物和非生物因素而经历年际变化。回收和鉴定了33种后生寄生虫物种：四个Monogenea（成人）；第16名Digenea（一名幼虫和15名成年）两个棘头虫（成人）；Cestoda的两个（幼虫）；三个线虫（两个幼虫和一个成年）；和六个甲壳纲（三个Co足类和三个等足类）。在双基因动物中，物种丰富度最大，占所恢复物种总数的48％，其次是甲壳类动物（占总物种的19％）。组成群落水平的物种丰富度（14–24种）与其他小型金枪鱼物种的丰富度相似。的组成社区和次社区E. lineatus表现出相似的模式：物种丰富度高，物种多样性高，单个物种在数量上占优势，主要由钉状双异位类异形拟齿或伪拟变构亚通（Aseudocolocyntotrema yaito）组成。抽样年份之间的寄生虫群落结构和物种组成各不相同。变化可能是由非生物和生物因素共同导致的，这些因素在研究期间引起了几种组分物种感染水平的显着变化。因此，就其他海洋寄生虫群落而言，这些群落的结构和物种组成可能无法预测。