Positivity and Intensity of Gnathostoma spinigerum Infective Larvae in Farmed and Wild-Caught Swamp Eels in Thailand
2
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
From July 2008 to June 2009, livers of the swamp eels (Monopterus alba) were investigated for advanced third-stage larvae (AL3) of Gnathostoma spinigerum. Results revealed that 10.2% (106/1,037) and 20.4% (78/383) of farmed eels from Aranyaprathet District, Sa Kaeo Province and those of wild-caught eels obtained from a market in Min Buri District of Bangkok, Thailand were infected, respectively. The prevalence was high during the rainy and winter seasons. The infection rate abruptly decreased in the beginning of summer. The highest infection rate (13.7%) was observed in September and absence of infection (0%) in March-April in the farmed eels. Whereas, in the wild-caught eels, the highest rate (30.7%) was observed in November, and the rate decreased to the lowest at 6.3% in March. The average no. (mean±SE) of AL3 per investigated liver in farmed eels (1.1±0.2) was significantly lower (P=0.040) than those in the caught eels (0.2± 0.03). In addition, the intensity of AL3 recovered from each infected liver varied from 1 to 18 (2.3±0.3) in the farmed eels and from 1 to 47 (6.3±1.2) in the caught eels, respectively. The AL3 intensity showed significant difference (P=0.011) between these 2 different sources of eels. This is the first observation that farmed eels showed positive findings of G. spinigerum infective larvae. This may affect the standard farming of the culture farm and also present a risk of consuming undercooked eels from the wild-caught and farmed eels.
Abstract
From July 2008 to June 2009, livers of the swamp eels (Monopterus alba) were investigated for advanced third-stage larvae (AL3) of Gnathostoma spinigerum. Results revealed that 10.2% (106/1,037) and 20.4% (78/383) of farmed eels from Aranyaprathet District, Sa Kaeo Province and those of wild-caught eels obtained from a market in Min Buri District of Bangkok, Thailand were infected, respectively. The prevalence was high during the rainy and winter seasons. The infection rate abruptly decreased in the beginning of summer. The highest infection rate (13.7%) was observed in September and absence of infection (0%) in March-April in the farmed eels. Whereas, in the wild-caught eels, the highest rate (30.7%) was observed in November, and the rate decreased to the lowest at 6.3% in March. The average no. (mean±SE) of AL3 per investigated liver in farmed eels (1.1±0.2) was significantly lower (P=0.040) than those in the caught eels (0.2± 0.03). In addition, the intensity of AL3 recovered from each infected liver varied from 1 to 18 (2.3±0.3) in the farmed eels and from 1 to 47 (6.3±1.2) in the caught eels, respectively. The AL3 intensity showed significant difference (P=0.011) between these 2 different sources of eels. This is the first observation that farmed eels showed positive findings of G. spinigerum infective larvae. This may affect the standard farming of the culture farm and also present a risk of consuming undercooked eels from the wild-caught and farmed eels.
참고문헌 (28)
- Waikagul J, "Gnathostomiasis, In Food-Borne Parasitic Zoonoses", pp.235~261 (2007), Springer
- Moorhouse DE, "Suspected human gnathostomiasis in Queensland", Med J Aust, 2, pp.250~ (1970)
- Chhuon H, "Mobile edema of the face and neck followed by intraocular localization of Gnathostoma spinigerum", Bull Soc Pathol Exot Filiales, 69, pp.347~351 (1976)
- Daengsvang S, "Gnathostomiasis in Southeast Asia", Southeast Asian J Trop Med Public Health, 12, pp.319~332 (1981)
- Ollague W, "Human gnathostomiasis in Ecuador (nodular migratory eosinophilic panniculitis). First finding of the parasite in South America", Int J Dermatol, 23, pp.647~651 (1984)
- Rusnak JM, "Clinical gnathostomiasis: case report and review of the English-language literature", Clin Infect Dis, 16, pp.33~50 (1993)
- Ogata K, "Short report: gnathostomiasis in Mexico", Am J Trop Med Hyg, 58, pp.316~318 (1998)
- Edward KM, "Gnathostoma spinigerum, In Medical Parasitology", pp.1~2 (1989), WB Saunders company
- Montero E, "Human gnathostomosis in Spain: first report in humans", Acta Trop, 78, pp.59~62 (2001)
- Baquera-Heredia J, "Case report: Ocular gnathostomiasis in northwestern Mexico", Am J Trop Med Hyg, 66, pp.572~574 (2002)
- Ligon BL, "Gnathostomiasis: a review of a previously localized zoonosis now crossing numerous geographical boundaries", Semin Pediatr Infect Dis, 16, pp.137~143 (2005)
- Herman JS, "Gnathostomiasis, another emerging imported disease", Clin Microbiol Rev, 22, pp.484~492 (2009)
- 윤희정, "Review of Zoonotic Parasites in Medical and Veterinary Fields in the Republic of Korea", The Korean Journal of Parasitology, 47, pp.133~141 (2009), 대한기생충학회
- Daengsvang S, "Gnathostoma spinigerum and human gnathostomiasis, In The 25th Anniversary of the Faculty of Tropical Medicine Mahidol University", pp.124~147 (1986), Krung Siam press
- Nawa Y, "Ocular Gnathostomiasis: a comprehensive review", J Trop Med Parasitol, 33, pp.77~86 (2010)
- Katchanov J, "Neurognathostomiasis, a neglected parasitosis of the central nervous system", Emerg Infect Dis, 17, pp.1174~1180 (2011)
- Rojekittikhun W, "On the biology of Gnathostoma spinigerum", J Trop Med Parasitol, 25, pp.91~98 (2002)
- Setasuban P, "Gnathostomiasis in Thailand: a survey on intermediate hosts of Gnathostoma spp. with special reference to a new type of larvae found in Fluta alba", Southeast Asian J Trop Med Public Health, 22(Suppl), pp.220~224 (1991)
- Rojekittikhun W, "Seasonal variation in the intensity of Gnathostoma larvae in swamp eels (Fluta alba) sold in a local market in Bangkok", Southeast Asian J Trop Med Public Health, 29, pp.148~153 (1998)
- Saksirisampant W, "A survey of the infective larvae of Gnathostoma spinigerum in swamp eels bought in a local market in Bangkok, Thailand", Ann Trop Med Parasitol, 96, pp.191~195 (2002)
- Rojekittikhun W, "Gnathostoma infection in fish caught for local consumption in Nakhon Nayok Province, Thailand. II. Deasonal variation in swamp eels", Southeast Asian J Trop Med Public Health, 35, pp.786~791 (2004)
- Sieu TP, "Prevalence of Gnathostoma spinigerum infection in wild and cultured swamp eels in Vietnam", J Parasitol, 95, pp.246~248 (2009)
- Akahane H, "Three cases of human gnathostomiasis caused by Gnathostoma hispidum, with particular reference to the identification of parasitic larvae", Southeast Asian J Trop Med Public Health, 29, pp.611~614 (1998)
- Daengsvang S, "A Monograph on the Genus Gnathostoma and Gnathostomiasis in Thailand", pp.77~85 (1980), SEAMIC publication
- "The Inter-annual Report of Thai Meteorological Department Ministry of Information and Communication Technology"[URL]
- "Bangkok Map"[URL]
- Liem KL, "Larvae of air-breathing fishes as countercurrent flow devices in hypoxic environments", Science, 211, pp.1177~1179 (1981)
- Smith HM, "The fresh-water fishes of Siam or Thailand", Bull U S National Museum, 188, pp.1~622 (1945)