Moravec František, Barton Diane P
Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, 370 05, České Budějovice, Czech Republic.
Department of Primary Industries and Resources, Northern Territory Government, Berrimah, Northern Territory, 0801, Australia.
Syst Parasitol. 2018 Jan;95(1):55-64. doi: 10.1007/s11230-017-9764-y. Epub 2017 Nov 22.
Based on light and scanning electron microscopical studies, a new nematode parasite, Capillaria appendigera n. sp. (Capillariidae), is described from the intestine of the goldbanded jobfish Pristipomoides multidens (Day) (Perciformes, Lutjanidae) from the Arafura Sea West, off the northern coast of Australia. The new species, belonging to the subgenus Procapillaria Moravec, 1987, differs from other congeneric species from fishes mainly in the length (0.92-1.13 mm), shape and structure of the spicule, obtuse spines on the spicule sheath and the structure of eggs. It is characterised, in the male, by the presence of two well-developed dorsolateral caudal lobes, a pair of lateral papillae, a heavily sclerotised spicule with many rough transverse grooves covering almost the entice spicule surface (except for spicule ends), a spinose spicule sheath, and in the female, by a subterminal anus, mostly the presence of a large vulval appendage and by eggs (size 54-69 × 27-33 µm) encapsulated by a conspicuous light-coloured superficial layer. Capillaria appendigera n. sp. is the 12th nominal species of capillariids recorded from fishes in Australian waters and the second known capillariid species parasitising fishes of the perciform family Lutjanidae. In addition, four unidentifiable, morphologically different types of capillariid females, probably representing undescribed species, were recorded from the intestines of marine fishes off the northern coast of Australia: Capillariidae gen. sp. 1 and Capillariidae gen. sp. 2 from Lutjanus johnii (Bloch) and L. malabaricus (Bloch & Schneider), respectively (both Lutjanidae), Capillariidae gen. sp. 3 from Protonibea diacanthus (Lacépède) (Sciaenidae) and Capillariidae gen. sp. 4 from Rachycentron canadum (Linnaeus) (Rachycentridae).
基于光学显微镜和扫描电子显微镜研究，从澳大利亚北部海岸以西阿拉弗拉海的多斑锯鳃石鲈（Pristipomoides multidens (Day)，鲈形目，笛鲷科）肠道中描述了一种新的线虫寄生虫——附鳃毛细线虫（Capillaria appendigera n. sp.）（毛细科）。该新物种属于1987年的原毛细线虫亚属（Procapillaria Moravec），与鱼类的其他同属物种主要在长度（0.92 - 1.13毫米）、交合刺的形状和结构、交合刺鞘上的钝刺以及卵的结构方面存在差异。其特征在于，雄性有两个发育良好的背外侧尾叶、一对侧乳突、一根高度硬化且带有许多粗糙横向凹槽的交合刺，这些凹槽几乎覆盖整个交合刺表面（交合刺末端除外）、一个具刺的交合刺鞘；雌性有一个亚末端肛门、大多有一个大的阴门附属物以及被明显浅色表层包裹的卵（大小为54 - 69×27 - 33微米）。附鳃毛细线虫是在澳大利亚水域鱼类中记录的第12个毛细科命名物种，也是已知寄生笛鲷科鱼类的第二个毛细科物种。此外，从澳大利亚北部海岸海洋鱼类肠道中记录到四种形态不同、无法鉴定的毛细科雌性，可能代表未描述的物种：分别来自约氏笛鲷（Lutjanus johnii (Bloch)）和马拉巴笛鲷（L. malabaricus (Bloch & Schneider)）（均为笛鲷科）的毛细科属种1和毛细科属种2，来自双棘原黄姑鱼（Protonibea diacanthus (Lacépède)）（石首鱼科）的毛细科属种3以及来自军曹鱼（Rachycentron canadum (Linnaeus)）（军曹鱼科）的毛细科属种4。
