巴西联邦区尼罗罗非鱼(Oreochromis niloticus)体表寄生虫的季节发生及变化

Q3 Agricultural and Biological Sciences Acta Scientiarum. Biological Sciences Pub Date : 2022-03-15 DOI:10.4025/actascibiolsci.v44i1.56963
Marcela Tosta Ribeiro, Bruna Maria da Silva Caldas, G. C. Rocha, Â. P. Santana, R. D. Navarro
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引用次数: 0

摘要

本研究评估了巴西联邦区挖掘池养殖尼罗罗非鱼(Oreochromis niloticus)寄生虫的多样性和季节变化。在12个月的采集中,共采集到niloticus标本120份。检查了所有水箱的水质参数。这些动物被浸泡在麻醉溶液中,被刮去鳃,在光学显微镜下分析粘液。寄生虫学检查发现鱼鳃中有Trichodina sp.、Epistylis sp.、Ichthyophthirius multifiliis和Monogenea蠕虫。在秋季和冬季采集的单属寄生虫和在秋冬和冬夏采集的多filiis原虫之间存在统计学差异。除Epistylis sp.外,其余寄生虫在冬季均出现丰度高峰,这可能是联邦区niloticus的季节性特征。在发现的寄生虫中,单属蠕虫最普遍,在秋季流行率最高。在秋季和冬季,寄生虫的平均丰度相似。冬夏季节单基因吸虫的丰度较高。百合花在秋冬和冬夏期间表现出显著的差异。
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Seasonal occurrence and variation of ectoparasites in Nile tilapia (Oreochromis niloticus) in the Federal District, Brazil
The present study assesses the diversity and seasonal variation of parasites in Oreochromis niloticus (Nile tilapia) cultivated in excavated tanks in the Federal District, Brazil. A total of 120 specimens of O. niloticus were collected in 12 monthly collections. Water quality parameters were checked at all tanks. The animals, sacrificed by immersion into anesthetic solution, had the gills scraped, in which the mucus was analyzed under an optical microscope. Parasitological examination showed Trichodina sp., Epistylis sp., Ichthyophthirius multifiliis, and Monogenea helminths in the fish gills. We found statistically significant differences between Monogenea parasites collected in the fall and winter and between I. multifiliis protozoans collected in fall-winter and winter-summer periods. Except for Epistylis sp., all parasites showed abundance peaks in O. niloticus specimens collected during the winter, which may characterize the seasonality of these parasites in the Federal District region. Monogenea helminths were the most prevalent among the parasites found, with the highest prevalence during the fall. The mean abundance of parasites was similar between the fall and winter. However, the abundance of monogenetic trematodes was higher between the winter and summer. I. multifiliis showed significant variation between fall-winter and winter-summer periods.
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来源期刊
Acta Scientiarum. Biological Sciences
Acta Scientiarum. Biological Sciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.00
自引率
0.00%
发文量
45
审稿时长
38 weeks
期刊介绍: The journal publishes original articles in all areas of Biological Sciences, including anatomy, bacteriology, molecular biology, biochemistry, botany, cytology and cell biology, animal behavior, ecology, limnology, embryology, and histology, morpho-physiology, genetics, microbiology, parasitology and zoology.
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