Rodríguez-Santiago M A, Ramos-Colorado L, García-Magaña L, Grano-Maldonado M I, Iannacone J, Vázquez-Caballero A
Consejo Nacional de Ciencia y Tecnología (CONACYT), Ciudad de México, México.
Centro de Investigaciones en Ciencias Ambientales, Facultad de Ciencias Naturales, Universidad Autónoma del Carmen, C.P. 24155 Ciudad del Carmen, Campeche, México.
Helminthologia. 2022 May 4;59(1):94-103. doi: 10.2478/helm-2022-0003. eCollection 2022 Mar.
The gray snapper is a commercially important fish species along its distribution range in the western Atlantic Ocean. However, despite its importance, there is still little knowledge about its parasitic fauna for the Mexican coasts of the Gulf of Mexico. The aims of this research were to generate a list of the parasitic fauna present in juvenile gray snapper from a coastal lagoon located in southeastern Mexico, to evaluate the infection levels of parasites and to determine the relationship between the abundance of parasites and the fish size and condition factor. Samples of (12 - 29.2 mm) were obtained in two periods of the year (dry and rainy seasons) to examine the intra-annual variability of its parasitic fauna. A total of 17 parasite species were recorded belonging to six taxonomic groups (Myxozoa, Monogenea, Digenea, Cestoda, Nematoda and Acanthocephala). The highest levels of infection (abundance, prevalence and intensity of infection) were found for the monogeneans and . There were no significant correlations between the total abundance of parasites and the fish condition and size (total length) in not any of the two seasons studied, suggesting that the body size and the biological condition index of the host did not directly influence the abundance of parasites in early life stages of . Moreover, the species of parasites found that could be zoonotic for humans through the consumption of raw or inadequately cooked fish were the nematodes sp. type 1, sp. type 2, and sp. The presence of the monogeneans and was also highlighted because these ectoparasite species are known to cause harm to fish under culture systems. All the parasite species found in this study, except nematodes, were new records of geographic distribution.
灰笛鲷是西大西洋分布范围内具有重要商业价值的鱼类。然而，尽管其具有重要性，但对于墨西哥湾墨西哥沿岸的寄生动物群仍知之甚少。本研究的目的是列出墨西哥东南部沿海泻湖幼年灰笛鲷体内存在的寄生动物群清单，评估寄生虫的感染水平，并确定寄生虫丰度与鱼的大小和状况因子之间的关系。在一年中的两个时期（旱季和雨季）采集体长为12 - 29.2毫米的样本，以研究其寄生动物群的年内变化。总共记录了17种寄生虫，分属于六个分类群（粘孢子虫、单殖吸虫、复殖吸虫、绦虫、线虫和棘头虫）。单殖吸虫类的[具体单殖吸虫名称1]和[具体单殖吸虫名称2]感染水平最高（感染丰度、感染率和感染强度）。在所研究的两个季节中，寄生虫的总丰度与鱼的状况和大小（全长）之间均无显著相关性，这表明宿主的体型和生物状况指数并未直接影响灰笛鲷幼体阶段寄生虫的丰度。此外，发现通过食用生鱼或未煮熟的鱼可能对人类具有人畜共患性的寄生虫有线虫类的[线虫名称1]1型、[线虫名称2]2型、[线虫名称3]和[线虫名称4]。单殖吸虫类的[具体单殖吸虫名称1]和[具体单殖吸虫名称2]的存在也受到关注，因为已知这些外寄生虫会对养殖系统中的鱼类造成危害。本研究中发现的所有寄生虫种类，除线虫外，均为地理分布新记录。
