A new monozoic tapeworm, Parabreviscolex niepini n. g., n. sp (Cestoda: Caryophyllidea), from schizothoracine fishes (Cyprinidae: Schizothoracinae) in Tibet, China
文献类型: 外文期刊
第一作者: Xi, Bing-Wen
作者: Xi, Bing-Wen;Chen, Kai;Xie, Jun;Oros, Mikulas
作者机构:
关键词: Cestoda;Caryophyllidean;Parabreviscolex;Schizothoracine;Tibet
期刊名称:PARASITOLOGY RESEARCH ( 影响因子:2.289; 五年影响因子:2.403 )
ISSN: 0932-0113
年卷期: 2018 年 117 卷 2 期
页码:
收录情况: SCI
摘要: A new monozoic cestode, Parabreviscolex niepini n. gen. and n. sp. (Cestoda: Caryophyllidea), is described from the type-host Schizopygopsis younghusbandi Regan, 1905 (Cyprinidae: Schizothoracinae) and Schizothorax waltoni Regan, 1905 (Cyprinidae: Schizothoracinae) in the Yarlung Tsangpo River, the upper tributary of the https://en.wikipedia.org/wiki/Yarlung_Tsangpo_River River on the Tibetan Plateau. The new genus is placed in the Capingentidae because the vitellarium is situated partly in the medullary and cortical parenchyma, i.e., neither completely external nor internal to inner longitudinal muscles. Parabreviscolex n. gen. is characterized by possessing an afossate and cuneiform scolex; numerous vitelline follicles and testes present immediately after the scolex, and spread backward near the cirrus sac; the uterus does not loop anterior to the cirrus sac; genital pores separate, opening to the common genital atrium; the pre-ovarian vitelline follicles lateral and median, post-ovarian vitelline follicles present; ovary H-shaped, compact, and ovarian arms long, anteriorly reaching the cirrus sac. Homology search by the basic local alignment search tool (BLAST) showed that the partial 18S rDNA and complete mtDNA cox-1 sequences obtained in this report were not consistent with any sequences available in GenBank, and molecular phylogenetic analyses revealed Parabreviscolex formed a separated long branch within the caryophyllideans from cyprinids.
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