Chero Jhon D, Cruces Celso L, Sáez Gloria, Luque José L
Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil.
Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática, Universidad Nacional Federico Villarreal (UNFV), El Agustino, Lima, Código postal 15007, Peru.
Acta Parasitol. 2021 Dec;66(4):1246-1250. doi: 10.1007/s11686-021-00388-2. Epub 2021 Apr 23.
A new monogenean, Rhamnocercoides lambayequensis n. sp. (Dactylogyridea: Diplectanidae), is described based on the specimens collected from the gills of the Pacific kingcroaker Menticirrhus elongatus (Günther 1864) (Perciformes: Sciaenidae), a demersal fish endemic to Eastern Pacific, captured off the South American Pacific coast, Lambayeque Region, Peru.
Monogeneans were fixed in hot 4% formalin. Some monogeneans were transferred directly onto a slide in a drop of glycerin-ammonium picrate mixture (GAP). Others were mounted stained with Gomori's trichrome in Canada balsam. Drawings were made using of a drawing tube.
The new species is mainly characterized by its MCO, which is tubular and straight, with external (distally expanded and bifurcated) and internal tubes (distally uncovered by external tube). Rhamnocercoides lambayequensis n. sp. is also characterized by having the following features: a weakly sclerotized almost pyriform vagina; haptoral acicular spines with expanded distal portion and by having a small group of haptoral accessory spines associated with haptoral lobes arranged as spikes.
This is the first data on the parasites of M. elongatus, a little known, but popular fish in local markets. The present finding brings to two, the number of known species of Rhamnocercoides Luque and Iannacone 1991, and represents the sixth described marine diplectanid species infecting sciaenid fishes from Peru.
基于从太平洋笛鲷Menticirrhus elongatus（冈瑟，1864年）（鲈形目：石首鱼科）鳃上采集的标本，描述了一种新的单殖吸虫，兰巴耶克鼠尾铗虫Rhamnocercoides lambayequensis n. sp.。太平洋笛鲷是一种分布于东太平洋的底栖鱼类，在秘鲁兰巴耶克地区的南美太平洋沿岸捕获。
单殖吸虫用热的4%福尔马林固定。一些单殖吸虫直接转移到载玻片上的一滴甘油苦味酸盐混合物（GAP）中。其他的则用Gomori三色染色法封片于加拿大树胶中。使用绘图管进行绘图。
新物种的主要特征是其MCO，呈管状且直，有外管（远端扩张并分叉）和内管（远端未被外管覆盖）。兰巴耶克鼠尾铗虫n. sp.的其他特征还包括：阴道几近梨形且硬化程度弱；抱器针状棘远端扩张，并有一小群与抱器叶相关的抱器辅助棘呈穗状排列。
这是关于长体笛鲷寄生虫的首次数据，长体笛鲷在当地市场鲜为人知但颇受欢迎。目前的发现使1991年描述的鼠尾铗虫属已知物种数量增加到两个，并且是秘鲁描述的第六种感染石首鱼科鱼类的海洋双身虫科物种。
