Bellingham Owen, Leung Tommy L F
Zoology, School of Environmental and Rural Science, University of New England, Armidale, NSW, Australia.
Parasitol Res. 2024 Oct 3;123(10):339. doi: 10.1007/s00436-024-08359-y.
This study investigated the role of host traits, habitat, and sampling season on the prevalence and intensity of parasites in three species of platycephalid fishes. Three host species sampled were dusky flathead (Platycephalus fuscus, n = 3), blue-spotted flathead (Platycephalus caeruleopunctatus, n = 38), and tiger flathead (Platycephalus richardsoni, n = 59). A total of 14 metazoan parasite species were collected over 15 months, between July 2020 and September 2021. The parasites found included a chondracanthid copepod, adult hemiuroidean trematodes, cestode plerocercoids, larval and adult acanthocephalans, larval and adult nematodes, and an unknown species of helminth. General linear models were used to assess the relationship between host traits and sampling season with parasite infection intensity. The infection intensity of an unidentified plerocercoid species in P. caeruleopunctatus was found to be significantly associated with both sampling season and the interaction of host mass with sex. In P. richardsoni the infection intensity of the acanthocephalan, Corynosoma sp. was found to correlate with sampling season. The highest richness of parasite taxa was recorded from P. richardsoni, which may be due to the wide depth range of P. richardsoni, coupled with its generalist diet.
本研究调查了宿主特征、栖息地和采样季节对三种鲉科鱼类寄生虫流行率和感染强度的影响。所采样的三种宿主鱼类分别为暗体鲉（Platycephalus fuscus，n = 3）、蓝点鲉（Platycephalus caeruleopunctatus，n = 38）和李氏鲉（Platycephalus richardsoni，n = 59）。在2020年7月至2021年9月的15个月期间，共收集到14种后生动物寄生虫。所发现的寄生虫包括一种软刺鱼虱桡足类、成年半尾吸虫、绦虫裂头蚴、幼虫和成年棘头虫、幼虫和成年线虫，以及一种未知种类的蠕虫。使用一般线性模型来评估宿主特征和采样季节与寄生虫感染强度之间的关系。发现蓝点鲉体内一种未鉴定的裂头蚴种类的感染强度与采样季节以及宿主体重与性别的相互作用均显著相关。在李氏鲉中，棘头虫Corynosoma sp.的感染强度与采样季节相关。李氏鲉的寄生虫类群丰富度最高，这可能是由于李氏鲉的深度分布范围广，且食性多样。
