(Trematoda:Brachycoeliidae) 对其第二个中间宿主,加勒比海 (Panulirus argus) 的影响
Tomás Franco-Bodek1, Cecilia Barradas-Ortiz2, Fernando Negrete-Soto2
1Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico.
PloS one
|September 29, 2023
概括
受到Cymatocarpus solearis的感染可能会改变加勒比海的行为. 寄生虫感染增加了血清激素水平,可能增加掠食风险和寄生虫传播.
科学领域:
- 寄生虫学的寄生虫学
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
背景情况:
- 狄格尼亚三角动物通常需要多个宿主来维持它们的生命周期.
- 鱼 (Cymatocarpus solearis) 使用加勒比海棘龙 (Panulirus argus) 作为中间宿主和木头乌 (Caretta caretta) 作为最终宿主.
- 寄生虫诱导的宿主操纵可以增加向最终宿主传播的速率.
研究的目的:
- 研究Cymatocarpus solearis感染对Panulirus argus的生理和行为影响.
- 为了确定感染是否会改变龙的状况或行为,从而可能增加龙的掠食性.
主要方法:
- 在未感染和感染的龙 (轻度,中度,重度) 之间比较生理变量 (肝细胞指数,生长率,血细胞计数,血代谢物包括葡萄糖,多巴胺和血清激素).
- 评估了7个组成部分的逃生反应在龙跨感染水平.
- 统计分析以确定与感染强度,龙大小和性别相关的差异.
主要成果:
- 与感染强度相比,没有发现龙大小或性别的显著差异.
- 严重感染的龙显示葡萄糖度明显降低.
- 中度和重度感染的龙表现出显著更高的血中血胺 (5-HT) 度.
结论:
- 肌肉内感染会影响Panulirus argus的生理参数,特别是改变葡萄糖和血清素水平.
- 血清激素升高可能会改变龙的活动模式或息地使用,可能会增加它们对掠食的脆弱性.
- 这些行为变化可能会增强C. solearis对其最终宿主 - - 龙头海的食物传播.
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