PDF(Pubmed)
Abstract：
BACKGROUND: Our investigation focused into Labeo rohita, commonly known as Rui, a freshwater aquatic species in Bangladesh. Despite their nutritional significance, these fish faced a pressing challenge: parasite infections threaten the economic stability of the aquaculture sector.
OBJECTIVE: The present study aimed to investigate the parasite and histological changes in major organs of L. rohita, collected from Khulna region - Dumuria, Paikgacha and Rupsha.
METHODS: About 180 (30/month) specimens were collected between the month of March and August 2023 to observe the parasitic status in L. rohita.
RESULTS: Through microscopic examination, a total of 323 parasites were uncovered, spanning categories including Cestode, Nematode, Acanthocephala, Trematode and Digenia, predominantly residing in the intestines of L. rohita. The highest prevalence rate (70%) was recorded in both March and May 2023, with peak mean intensity observed in July (3.73). Notably, the highest mean abundance (2.37) exhibited in July and index of infestation (45.34) in June. Histological analysis confirmed parasitic infestations in the gastrointestinal region, with displaying histological changes within major organs such as the liver, kidney, gills, spleen and testicles due to parasitic infection.
CONCLUSIONS: This study concluded that the indentified six categories of parasite and the affect of parasitic infestation in major organs of L. rohita within the study period. Urgent efforts to implement effective strategies for controlling the parasite infections in aquaculture to ensure the sustainable production of this invaluable fish species.
OBJECTIVE: The present study aimed to investigate the parasite and histological changes in major organs of L. rohita, collected from Khulna region - Dumuria, Paikgacha and Rupsha.
METHODS: About 180 (30/month) specimens were collected between the month of March and August 2023 to observe the parasitic status in L. rohita.
RESULTS: Through microscopic examination, a total of 323 parasites were uncovered, spanning categories including Cestode, Nematode, Acanthocephala, Trematode and Digenia, predominantly residing in the intestines of L. rohita. The highest prevalence rate (70%) was recorded in both March and May 2023, with peak mean intensity observed in July (3.73). Notably, the highest mean abundance (2.37) exhibited in July and index of infestation (45.34) in June. Histological analysis confirmed parasitic infestations in the gastrointestinal region, with displaying histological changes within major organs such as the liver, kidney, gills, spleen and testicles due to parasitic infection.
CONCLUSIONS: This study concluded that the indentified six categories of parasite and the affect of parasitic infestation in major organs of L. rohita within the study period. Urgent efforts to implement effective strategies for controlling the parasite infections in aquaculture to ensure the sustainable production of this invaluable fish species.
摘要：
背景：我们的调查集中在Labeorohita，俗称Rui,孟加拉国的一种淡水水生物种。尽管它们的营养意义，这些鱼类面临着紧迫的挑战:寄生虫感染威胁着水产养殖部门的经济稳定。
目的：本研究旨在研究罗氏乳杆菌主要器官的寄生虫和组织学变化，从Khulna地区-Dumria收集，Paikgacha和Rupsha.
方法：在2023年3月至8月之间收集了约180个（30个/月）标本，以观察L.rohita的寄生状态。
结果：通过显微镜检查，总共发现了323种寄生虫，跨越类别，包括Cestode，线虫,Acanthocephala,吸虫和Digenia,主要居住在L.rohita的肠道。在2023年3月和5月记录了最高的患病率（70％），在7月观察到峰值平均强度（3.73）。值得注意的是,7月平均丰度最高（2.37），6月感染指数最高（45.34）。组织学分析证实胃肠道区域有寄生虫感染，显示肝脏等主要器官的组织学变化，肾,ill,脾脏和睾丸由于寄生虫感染。
结论：本研究得出的结论是，在研究期间，确定了六类寄生虫以及寄生虫侵染对L.rohita主要器官的影响。紧急努力实施控制水产养殖寄生虫感染的有效策略，以确保这种宝贵鱼类的可持续生产。
目的：本研究旨在研究罗氏乳杆菌主要器官的寄生虫和组织学变化，从Khulna地区-Dumria收集，Paikgacha和Rupsha.
方法：在2023年3月至8月之间收集了约180个（30个/月）标本，以观察L.rohita的寄生状态。
结果：通过显微镜检查，总共发现了323种寄生虫，跨越类别，包括Cestode，线虫,Acanthocephala,吸虫和Digenia,主要居住在L.rohita的肠道。在2023年3月和5月记录了最高的患病率（70％），在7月观察到峰值平均强度（3.73）。值得注意的是,7月平均丰度最高（2.37），6月感染指数最高（45.34）。组织学分析证实胃肠道区域有寄生虫感染，显示肝脏等主要器官的组织学变化，肾,ill,脾脏和睾丸由于寄生虫感染。
结论：本研究得出的结论是，在研究期间，确定了六类寄生虫以及寄生虫侵染对L.rohita主要器官的影响。紧急努力实施控制水产养殖寄生虫感染的有效策略，以确保这种宝贵鱼类的可持续生产。
