Cutmore Scott C, Cribb Thomas H
School of Biological Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia.
Syst Parasitol. 2018 May;95(4):325-336. doi: 10.1007/s11230-018-9784-2. Epub 2018 Feb 7.
Two species of the trematode genus Phyllodistomum Braun, 1899 (Gorgoderidae) are reported infecting teleost fishes from Moreton Bay, Queensland, Australia. Phyllodistomum hyporhamphi n. sp. is described from two species of garfishes (Hemiramphidae), Hyporhamphus regularis ardelio (Whitley) and H. australis (Steindachner). The new species differs from other marine species of Phyllodistomum in possessing a forebody length less than half that of the body, a body length to width ratio < 4:1, an oral sucker width to ventral sucker width ratio > 1:1 and < 2:1, 7-9 strong, marginal undulations on each side of the body and large, slightly lobed vitelline masses. Phyllodistomum pacificum Yamaguti, 1951 is reported, for the first time in Australian waters, from Pantolabus radiatus (MacLeay) (Carangidae). The new material agrees closely with the original description of P. pacificum, in Carangoides equula (Temminck & Schlegel) off Hamazima, Mie Prefecture, Japan, although the specimens from Moreton Bay are larger than those of the original description (4,575-5,338 × 1,111-1,328 vs 2,200-3,100 × 570-930 μm). Cetiotrema carangis (Manter, 1947) Manter, 1970 is found to be a synonym of Cetiotrema carangis (MacCallum, 1913) Williams & Bunkley-Williams, 1996 and the species is formally moved to Phyllodistomum as P. carangis (MacCallum, 1913) n. comb. Phylogenetic analyses of 28S rDNA data showed that the six marine species of Phyllodistomum for which molecular data are available form a strongly-supported clade.
据报道，1899年的叶形吸虫属（Phyllodistomum Braun，裂宫科）的两个物种感染了澳大利亚昆士兰州莫顿湾的硬骨鱼。新种叶形吸虫（Phyllodistomum hyporhamphi n. sp.）是从两种颌针鱼（颌针鱼科），即普通颌针鱼（Hyporhamphus regularis ardelio，惠特利）和澳洲颌针鱼（H. australis，施泰因达赫纳）中描述的。新物种与叶形吸虫属的其他海洋物种的区别在于，其前体长度小于身体长度的一半，体长与体宽之比小于4:1，口吸盘宽度与腹吸盘宽度之比大于1:1且小于2:1，身体两侧各有7 - 9条明显的边缘波状起伏，以及大的、略呈叶状的卵黄腺。1951年的太平洋叶形吸虫（Phyllodistomum pacificum Yamaguti）首次在澳大利亚水域被报道，来自辐射似鲹（Pantolabus radiatus，麦克利）（鲹科）。新材料与在日本三重县滨岛附近的艾氏若鲹（Carangoides equula，坦明克和施莱格尔）中对太平洋叶形吸虫的原始描述非常吻合，尽管来自莫顿湾的标本比原始描述的标本更大（4575 - 5338×1111 - 1328 vs 2200 - 3100×570 - 930μm）。发现卡氏鲸吸虫（Cetiotrema carangis，曼特，1947）曼特，1970是卡氏鲸吸虫（Cetiotrema carangis，麦卡勒姆，1913）威廉姆斯和邦克利 - 威廉姆斯，1996的同物异名，该物种正式移至叶形吸虫属，成为卡氏叶形吸虫（Phyllodistomum carangis，麦卡勒姆，1913）新组合。对28S rDNA数据的系统发育分析表明，有分子数据的六种海洋叶形吸虫物种形成了一个得到有力支持的分支。
