发现了三角形虫Cercaria duplicata的成年人,并提供了第一个形态描述,分子识别和对宿主特异性的注释
Virmantas Stunžėnas1, Romualda Petkevičiūtė1, Katarzyna Zając2
1Nature Research Centre, Akademijos St. 2, 08412, Vilnius, Lithuania.
Scientific reports
|September 27, 2024
概括
成人形式的Cercaria duplicata是一种寄生虫在Anodonta anatina中发展,被确定为Phyllodistomum duplicatum n. comb. 这一发现澄清了这个藻类三体动物的生命周期,将其幼虫和成年阶段联系起来.
科学领域:
- 类动物学 类动物学
- 寄生虫学的寄生虫学
- 鱼类寄生虫学 鱼类寄生虫学
背景情况:
- 众所周知,Rhopalocercous Cercaria duplicata von Baer,1827年的幼虫阶段在联合体双动物Anodonta anatina中发展.
- 成人形式和C. duplicata的完整生命周期仍然是未知的.
研究的目的:
- 为了识别C. duplicata的成年形式.
- 为了阐明戈尔戈底三角动物的生命周期和遗传位置.
- 分析ITS2和28SrDNA的遗传序列,以进行遗传学分析.
主要方法:
- 在Zesławice水库和Ilmėdas湖中检查八种鱼类的寄生虫感染.
- 从鱼尿道和尿膀的孕期Phyllodistomum标本的形态鉴定.
- 使用ITS2和28SrDNA基因序列进行分子分析.
主要成果:
- 从伊德 (Leuciscus idus) 和普通 (Scardinius erythrophthalmus) 的尿道中恢复了Gravid Phyllodistomum标本.
- 遗传学分析证实,这些成年Phyllodistomum标本与C. duplicata.同属.
- 一个单独的标本从鲁德的膀被确定为Phyllodistomum folium.
结论:
- 建议C.duplicata的成年阶段被称为Phyllodistomum duplicatum n. comb.
- 关键的区别特征包括间子宫和深叶卵巢.
- 这项研究确定了鱼类中体阶段与其成年形式之间的联系,有助于对体鱼类生命周期的了解.
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