Biology Department, Clark University, Worcester, Massachusetts, USA.
Department of Biological Sciences, University of Massachusetts - Lowell, Lowell, Massachusetts, USA.
Parasitology. 2022 Aug;149(9):1173-1178. doi: 10.1017/S0031182022000567. Epub 2022 May 16.
The cestode is a common parasite in freshwater threespine stickleback populations, imposing strong fitness costs on their hosts. Given this, it is surprising how little is known about the timing and development of infections in natural stickleback populations. Previous work showed that young-of-year stickleback can get infected shortly after hatching. We extended this observation by comparing infection prevalence of young-of-year stickleback from 3 Alaskan populations (Walby, Cornelius and Wolf lakes) over 2 successive cohorts (2018/19 and 2019/20). We observed strong variation between sampling years (2018 2019 2020), stickleback age groups (young-of-year 1-year-old) and sampling populations.
绦虫是淡水三刺鱼种群中的一种常见寄生虫，对其宿主造成了严重的适应代价。考虑到这一点，人们对自然环境中三刺鱼种群的感染时间和发展过程知之甚少就令人惊讶了。之前的研究表明，当年孵化的幼鱼在孵化后不久就可能被感染。我们通过比较 2018/19 年和 2019/20 年 3 个阿拉斯加种群（Walby、Cornelius 和 Wolf 湖）的当年孵化幼鱼的感染率，扩展了这一观察结果。我们发现，在采样年份（2018 年、2019 年和 2020 年）、三刺鱼年龄组（当年孵化幼鱼和 1 龄鱼）和采样种群之间存在很强的变异性。
