Moreira J, Paschoal F, Cezar A D, Luque J L
Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, BR.
Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, BR.
Braz J Biol. 2015 Aug;75(3):736-41. doi: 10.1590/1519-6984.00114. Epub 2015 Aug 25.
Between March 2010 and August 2011 were necropsied 100 specimens of Sardinella brasiliensis (Steindachner, 1879), from the coast of the State of Rio de Janeiro, Brazil (22°51'S, 43°56'W), to study their community of metazoan parasites. All specimens of S. brasiliensis were parasitized by at least one species of metazoan parasite, with mean of 68.7 ± 71.2 parasites/fish. Eleven species were collected: 3 digeneans, 1 monogenean, 2 cestodes, 3 nematodes and 2 copepods. The digenean Myosaccium ecaude Montgomery was the most abundant, prevalent, and dominant species, representing 72.7% of metazoan parasites collected, showing positive correlation between host's total length and parasite abundance. Total parasite abundance was positively correlated with host's total length. Three pairs of adult endoparasites showed significant positive association and covariation. The parasite community of S. brasiliensis showed dominance by digeneans. Sardinella brasiliensis represents new host record for most found parasite species.
2010年3月至2011年8月期间，对100份巴西小沙丁鱼（Sardinella brasiliensis，Steindachner，1879）标本进行了尸检，这些标本采自巴西里约热内卢州海岸（南纬22°51′，西经43°56′），以研究其后生动物寄生虫群落。所有巴西小沙丁鱼标本均被至少一种后生动物寄生虫寄生，每条鱼体内寄生虫的平均数量为68.7 ± 71.2条。共采集到11个物种：3种复殖吸虫、1种单殖吸虫、2种绦虫、3种线虫和2种桡足类。复殖吸虫蒙氏肌囊吸虫（Myosaccium ecaude Montgomery）是数量最多、感染率最高且占主导地位的物种，占所采集后生动物寄生虫的72.7%，宿主的全长与寄生虫数量呈正相关。寄生虫的总数量与宿主的全长呈正相关。三对成年体内寄生虫呈现出显著的正相关和协变关系。巴西小沙丁鱼的寄生虫群落以复殖吸虫为主导。巴西小沙丁鱼是大多数已发现寄生虫物种的新宿主记录。
