Description and life-cycle of Taenia lynciscapreoli sp. n. (Cestoda, Cyclophyllidea).
Description and life-cycle of Taenia lynciscapreoli sp. n. (Cestoda, Cyclophyllidea).
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DOI：
10.3897/zookeys.584.8171
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发表时间：
2016
期刊：
影响因子：
1.3
通讯作者：
Nakao M
中科院分区：
文献类型：
--
作者：
Haukisalmi V;Konyaev S;Lavikainen A;Isomursu M;Nakao M
本文报道了芬兰和俄罗斯（西伯利亚和俄罗斯远东地区）主要终末寄主欧亚猞猁和主要中间寄主狍子（Capreolus Capreolus pygargus Capreolus）的绦虫带绦虫（Taenia lynciscapreoli sp. n.）新种。新物种也曾在狼（Canis lupus）和欧亚麋鹿/驼鹿（Alces Alces）中被发现，分别代表偶然的最终宿主和中间宿主。利用线粒体细胞色素c氧化酶亚基1基因的部分核苷酸序列，证实了不同寄主物种和地区的lynciscapreoli带带绦虫成虫和半绦虫的同一性，以及它们与带带绦虫近缘种的区别。从形态学上看，lynciscapreoli带带绦虫可以通过其大的rostellar钩的形状，特别是其典型的短、宽和强烈弯曲的叶片，与所有其他种类的带带绦虫区分开来。如果大的喙钩缺失，lynciscapreoli带绦虫可能是通过结合成熟的原语类动物的形态特征与相关物种分离出来的。在有关欧洲猞猁和山猫绦虫的出版资料中，有人认为猞猁带绦虫是存在的，但被误认为是猪带绦虫（Bloch, 1780）。在狍活动范围之外的猞猁中未发现猞猁带绦虫，这表明基于特定的捕食者-猎物关系的传播途径。本研究采用一种新颖、简单的方法来比较星钩形状的定性种间差异。
A new species of tapeworm, Taenia lynciscapreoli sp. n. (Cestoda, Cyclophyllidea), is described from the Eurasian lynx (Lynx lynx), the main definitive host, and the roe deer (Capreolus capreolus and Capreolus pygargus), the main intermediate hosts, from Finland and Russia (Siberia and the Russian Far East). The new species was found once also in the wolf (Canis lupus) and the Eurasian elk/moose (Alces alces), representing accidental definitive and intermediate hosts, respectively. The conspecificity of adult specimens and metacestodes of Taenia lynciscapreoli sp. n. in various host species and regions, and their distinction from related species of Taenia, was confirmed by partial nucleotide sequences of the mitochondrial cytochrome c oxidase subunit 1 gene. Morphologically, Taenia lynciscapreoli sp. n. can be separated unambiguously from all other species of Taenia by the shape of its large rostellar hooks, particularly the characteristically short, wide and strongly curved blade. If the large rostellar hooks are missing, Taenia lynciscapreoli may be separated from related species by a combination of morphological features of mature proglottids. It is suggested that Taenia lynciscapreoli has been present in published materials concerning the tapeworms of Lynx lynx and Lynx pardinus in Europe, but has been misidentified as Taenia pisiformis (Bloch, 1780). Taenia lynciscapreoli sp. n. has not been found in lynx outside the range of roe deer, suggesting a transmission pathway based on a specific predator–prey relationship. The present study applies a novel, simple approach to compare qualitative interspecific differences in the shape of rostellar hooks.