来自南非东南部的八种虫虫物种的长期宿主寄生虫动态
Inge A Adams1,2, Natasha Roussouw3, Cecile Reed1,4
1Department of Biological Sciences, University of Cape Town, South Africa.
International journal for parasitology. Parasites and wildlife
|October 2, 2025
概括
这项研究在南非鱼中发现了寄生虫,在浅动物和近年来发现了更高的感染率. 博物馆藏品对于了解海洋哺乳动物健康和保护至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 寄生虫学的寄生虫学
- 野生动物保护 野生动物保护
背景情况:
- 有限的知识存在于寄生虫影响在南非的25个odontocete (牙) 种类.
- 鱼浅和副捕获提供了研究海洋哺乳动物健康的机会.
研究的目的:
- 列出感染南非虫的寄生虫物种.
- 检查与宿主年龄,性别,时间和采集方法相关的寄生虫感染模式.
- 突出博物馆藏品对生物研究的价值.
主要方法:
- 寄生虫的回顾性分析来自2599个浅和被捕获的odontocetes (1970-2015).
- 寄生虫的形态识别.寄生虫的形态识别.
- 双项逻辑回归用于分析感染模式.
主要成果:
- 在192个个体中发现了寄生虫;在几种虫物种中发现了新的寄生虫物种.
- 浅和离岸的牙周细胞通常表现出更高的寄生虫患病率.
- 寄生虫在浅的海豚 (Delphinus delphis) 中的存在率较高,在年轻的海豚 (Tursiops aduncus) 和海豚 (Stenella coeruleoalba) 中的寄生虫存在率较低.
- 近年来 (2000-2015年) 寄生虫的流行率在一半的物种中增加.
结论:
- 博物馆藏品对于发现和编目海洋哺乳动物中的寄生虫至关重要.
- 了解寄生虫流行病学对于评估鱼健康和告知保护战略至关重要.
相关概念视频
Convergent Evolution
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
Diversity of Protists I
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Rabies
Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...
Toxoplasmosis
Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...


