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致死性肝脏囊症在三个被囚禁的和一个自由的平动物中

Judy St Leger¹, Yang Chen², Kristen Sakamaki³

¹SeaWorld Parks and Entertainment, San Diego, CA, USA.

International journal for parasitology. Parasites and wildlife

|December 7, 2023

概括

一种新型的Sarcocystis寄生虫,类似于S. canis的致死性肝脏囊症在夏威夷僧和加利福尼亚海狮中被发现. 需要进一步的研究来了解它的生命周期和宿主.

科学领域:

兽医病理学兽医病理学
寄生虫学的寄生虫学
海洋哺乳动物医学海洋哺乳动物医学

背景情况:

致命的肝脏囊症已经在足动物中被诊断出.
肝细胞内的原生动物分裂细胞导致死性肝炎.

研究的目的:

为了确定致命的肝脏囊症的致病原体在足动物.
为了确定致病寄生虫与已知的Sarcocystis物种的关系.

主要方法:

进行了尸体解剖,组织病理学和传输电子显微镜 (TEM).
对18S rRNA和ITS1基因标记物的聚合酶连锁反应 (PCR) -DNA测序用于寄生虫鉴定和遗传学分析.

主要成果:

TEM揭示了类似于sarcocystis canis的分裂体在皮肝细胞中.
18S rRNA基因测序表明,该寄生虫与S. canis.无法区分.
ITS1基因测序揭示了六个单核酸多态 (SNPs),这表明一个不同的Sarcocystis变体,本文称为S. canis-like.

结论:

在足动物中发现的寄生虫代表了一种新的Sarcocystis变体,类似于S. canis.
确定的宿主和S. canis和S. canis样变体的完整生命周期仍然是未知的.
识别这种寄生虫的生命周期和宿主对于理解和管理海洋和陆地动物的囊瘤至关重要.

关键词:

肝炎是一种肝炎.僧侣海是什么意思僧侣海是什么意思这是一个Pinniped的Pinniped.原生动物原生动物囊瘤是一种囊瘤.海狮是什么意思海狮是什么意思

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