寄生虫介导的操纵? 毒素菌感染增加了红鹿杀的风险行为
Matteo Nava1, Luca Corlatti2,3, Nicoletta Formenti4
1Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy.
Biology letters
|October 17, 2023
概括
红鹿 (Cervus elaphus) 中的Toxoplasma gondii感染可能会增加掠食风险. 感染的雌鹿处于良好的状态,靠近人类活动,早些时候被杀,这表明它们的冒险行为发生了改变.
科学领域:
- 寄生虫学的寄生虫学
- 野生动物生态生态学
- 行为生态学 行为生态学
背景情况:
- 寄生虫,如 *Toxoplasma gondii*,可以改变宿主行为的增强传播.
- 虽然在动物和人类中已知,但T. gondii对野生大型食草动物的行为影响不太清楚.
- 这项研究调查了T. gondii对自然环境中的红鹿行为的影响.
研究的目的:
- 为了确定红鹿 (*Cervus elaphus*) 中*Toxoplasma gondii*的血清流行率.
- 评估T. gondii感染是否影响红鹿被杀的可能性,这可能表明风险承担行为的改变.
- 探索性别,年龄,身体状况和位置等因素如何与T. gondii*感染相互作用,与除风险相关.
主要方法:
- 在意大利斯泰尔维奥国家公园的260头红鹿中进行了T. gondii*抗体的血清检测.
- 使用线性模型分析杀数据,以T. gondii*血清状况作为关键解释变量.
- 包括共变量:性别,年龄,长,骨髓脂肪和杀位置来完善模型.
主要成果:
- 在研究的红鹿种群中,T. gondii的总体血清流行率为31.5%.
- 病毒阳性鹿的屠杀时间比病毒阴性鹿的屠杀时间早.
- 这种效应在雌性,身体状况中等或良好的鹿以及在人类存在较高的地区显著.
结论:
- 毒素菌感染可能会影响红鹿等大型草食动物的冒险行为.
- 这种寄生虫可以在野生种群中起到捕食或杀风险的促进作用.
- 这些发现突出了对野生动物寄生虫与宿主行为相互作用的进一步研究的需要.
相关概念视频
01:28Toxoplasmosis
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...
01:28Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...