Abstract
Metacercariae of the Diplostomum spp., the cause of Larval Eye Diplostomiasis (LED), are located in the lenses of the eyes of fresh water fish and cause degeneration, lens opacity and blindness as disease progresses. Feed uptake is hindered in fish with failing eyesight causing loss of apetite and mortality becomes inevitable with the onset of secondary diseases. Freshwater molluscs and waterfowl have an important role in the fast spread of the disease to nearby farms. In this work, a total of 534 trout samples obtained from 24 farms located in southeastern Turkey were examined for LED. Histopathological findings were evaluated in thirty fish with lens opacity in varying degrees. Also these fish were examined in terms of bacterial agents as well. As a result of this work, Diplostomum spp. metacercariae were found to be prevalent in the lenses of fish. In fish with marked lens opacity, focal to extensive subcapsular cataract was observed. Cataract lesions included abnormal proliferation of the lens epithelium at the site of capsular rupture, often followed by degeneration, fragmentation and liquefaction of adjacent cortical lens fibers. Additionally, Lactococcus garvieae was also isolated in 10 of 24 farms
Keywords
References
- Arda M, Seçer S, Sareyyüpoğlu M (2010): Balık Hastalıkları, 1. baskı, Medisan Yayınevi, Ankara, 104- 109.
- Austin B, Austin DA (2012): Bacterial Fish Pathogens: Disease of farmed and wild fish, 5th edition Sppringer, New York, 978-94-007-4884-2pp.
- Bykhovskaya-Pavlovskaya IE, Gusev AV, Dubinina MN, et al. (1962): Key to Parasites of Freshwater Fish of the U.S.S.R. İzdatel'stvo Akademi Nauk S.S.S.R., Moskova-Leningrad, 200-605.
- Buchmann K, Uldal A (1997): Gyrodactylus derjavini infections susceptibility and site selection of parasites. Dis Aquat Org, 28, 201-209. comparative host
- Bush AO, Lafferty KD, Lotz JL, et al. (1997): Parasitology meets ecology on its own terms: Margolis et al. revisited. J Parasitol, 83, 575-583.
- Dorucu M, Ispir Ü (2001): Seasonal variation of Diplostomum spp. infection in eyes of Acanthobrama marmid in Keban Dam Lake. EÜ Su Ürünleri Dergisi, 3, 301-305.
- Evans RS, Heckmann RA, Palmieri J (1976): Diplostomiasis in Utah. Utah Acad Proc, 53, 20-25.
- Gusev AV (1985): Class Monogenea, In: O.N. Bauer, (Ed.), Keys to Parasites of the Freshwater Fish Fauna of the USSR, (Parasitic Metazoa), Leningrad Publishing House Nauka, Leningrad, Russian, 2, 10-253.
- Gül A, İspir Ü, Türk C, et al. (2014): Investigation of Diplostomum spp. Metacercariae in Some Cyprinids from Murat River (Genç Area), Bingöl, Turkey. TurkJANS, 1, 547-551.
- Holt JG, Krieg NR, Sneathm PHA, et al. (1994): Bergey’s Manual of Determinative Bacteriology, 9th edn. Baltimore, 1994, MD: Williams and Williams.
- Karvonen A, Seppala O, Valtonen ET (2004): Eye fluke- induced cataract formation in fish: quantitative analysis using an ophthalmological microscope. Parasitology, 129, 473-478.
- Karvonen A (2012): Diplostomum spathaceum and related sppecies. In: (Eds) Woo, PTK.
- Kubota SS (1976): Cataract in fishes: Pathological changes in the lens. Fish Pathol, 10, 191-197.
- Luna LG (1968): Manual of Histologic Staining Methods of the Armed Forced Institute of Pathology, 3.rd edition, McGraw-Hill Book Company, London, Sydney. Newyork, Toronto,
- Markevic AP (1951): Parasitic fauna of freshwater fish of the Ukrainian SSR, Israel program for scientific translations, Jerusalem, 95-255.
- Menzies FD, Crockford T, Breck O, et al. (2002): Estimation of direct costs associated with cataracts in farmed Atlantic salmon (Salmo salar). Bull Eur Ass Fish Pathol, 22, 27-32. 17. Mitchell CG (1996): Diplostomum. The Information Agriculture, Environment and Fisheries Department. Marine Laboratory. Aberdeen. Scottish Office
- Ozesen Ç (2011): The helminth community of the sand smelt (Atherina boyeri Risso, 1810) from Lake Iznik, Turkey. J Helminthol, 21, 1- 6.
- Shariff M, Richards RH, Sommerville C (1980): The histopathology of acute and chronic infections of rainbow trout Salmo gairdneri Richardson with eye flukes, Diplostomum spp. J Fish Dis, 3, 455-465.
- Turgut E, Ozgul G (2012): Seasonal changes and host size-dependent variation in Diplostomum spp. infection of some Cyprinid Fish. Pak J Zool, 44, 123-128.
Abstract
Larval Göz Diplostomias (LED)’in etkeni olan Diplostomum spp.'nin metaserkerleri tatlı su balıklarının göz lenslerinde yerleşerek hastalık ilerledikçe dejenerasyon, lenslerde opasite (katarakt) ve körlüğe yol açmaktadır. Görme yetisini kaybeden balıklarda yem alımı engellenmektedir ve bu durum iştah kaybına yol açmakta ve sekonder enfeksiyonların da gelişmesi ile birlikte mortalite kaçınılmaz hale gelmektedir. Tatlı su yumuşakçaları ve su kuşları hastalığın yakın çiftliklere hızla yayılmasında önemli role sahiptir. Bu çalışmada, Türkiye'nin güneydoğusunda bulunan 24 balık çiftliğinden toplanan 534 alabalık örneği LED açısından muayene edilmiştir. Değişen derecelerde lens opasitesi gösteren 30 balıkta histopatolojik bulgular değerlendirilmiştir. Ayrıca, bu balıklar bakteriyel etkenler açısından da incelenmiştir. Bu çalışmanın sonucunda, Diplostomum spp. metaserkerleri balıkların lenslerinde yaygın olarak tespit edilmiştir. Belirgin lens opaklığı görülen balıklarda fokalden yaygına değişen subkapsüler katarakt gözlemlenmiştir. Katarakt lezyonları lens epitelinin kapsüler ruptur bölgesinde anormal proliferasyonu ile sıklıkla bunu izleyen dejenerasyon, fragmentasyon ve bitişik kortikal lens liflerinde sıvılaşma belirtilerini içermektedir. Buna ek olarak, 24 çiftliğin 10'unda Lactococcus garvieae de izole edilmiştir
Keywords
References
- Arda M, Seçer S, Sareyyüpoğlu M (2010): Balık Hastalıkları, 1. baskı, Medisan Yayınevi, Ankara, 104- 109.
- Austin B, Austin DA (2012): Bacterial Fish Pathogens: Disease of farmed and wild fish, 5th edition Sppringer, New York, 978-94-007-4884-2pp.
- Bykhovskaya-Pavlovskaya IE, Gusev AV, Dubinina MN, et al. (1962): Key to Parasites of Freshwater Fish of the U.S.S.R. İzdatel'stvo Akademi Nauk S.S.S.R., Moskova-Leningrad, 200-605.
- Buchmann K, Uldal A (1997): Gyrodactylus derjavini infections susceptibility and site selection of parasites. Dis Aquat Org, 28, 201-209. comparative host
- Bush AO, Lafferty KD, Lotz JL, et al. (1997): Parasitology meets ecology on its own terms: Margolis et al. revisited. J Parasitol, 83, 575-583.
- Dorucu M, Ispir Ü (2001): Seasonal variation of Diplostomum spp. infection in eyes of Acanthobrama marmid in Keban Dam Lake. EÜ Su Ürünleri Dergisi, 3, 301-305.
- Evans RS, Heckmann RA, Palmieri J (1976): Diplostomiasis in Utah. Utah Acad Proc, 53, 20-25.
- Gusev AV (1985): Class Monogenea, In: O.N. Bauer, (Ed.), Keys to Parasites of the Freshwater Fish Fauna of the USSR, (Parasitic Metazoa), Leningrad Publishing House Nauka, Leningrad, Russian, 2, 10-253.
- Gül A, İspir Ü, Türk C, et al. (2014): Investigation of Diplostomum spp. Metacercariae in Some Cyprinids from Murat River (Genç Area), Bingöl, Turkey. TurkJANS, 1, 547-551.
- Holt JG, Krieg NR, Sneathm PHA, et al. (1994): Bergey’s Manual of Determinative Bacteriology, 9th edn. Baltimore, 1994, MD: Williams and Williams.
- Karvonen A, Seppala O, Valtonen ET (2004): Eye fluke- induced cataract formation in fish: quantitative analysis using an ophthalmological microscope. Parasitology, 129, 473-478.
- Karvonen A (2012): Diplostomum spathaceum and related sppecies. In: (Eds) Woo, PTK.
- Kubota SS (1976): Cataract in fishes: Pathological changes in the lens. Fish Pathol, 10, 191-197.
- Luna LG (1968): Manual of Histologic Staining Methods of the Armed Forced Institute of Pathology, 3.rd edition, McGraw-Hill Book Company, London, Sydney. Newyork, Toronto,
- Markevic AP (1951): Parasitic fauna of freshwater fish of the Ukrainian SSR, Israel program for scientific translations, Jerusalem, 95-255.
- Menzies FD, Crockford T, Breck O, et al. (2002): Estimation of direct costs associated with cataracts in farmed Atlantic salmon (Salmo salar). Bull Eur Ass Fish Pathol, 22, 27-32. 17. Mitchell CG (1996): Diplostomum. The Information Agriculture, Environment and Fisheries Department. Marine Laboratory. Aberdeen. Scottish Office
- Ozesen Ç (2011): The helminth community of the sand smelt (Atherina boyeri Risso, 1810) from Lake Iznik, Turkey. J Helminthol, 21, 1- 6.
- Shariff M, Richards RH, Sommerville C (1980): The histopathology of acute and chronic infections of rainbow trout Salmo gairdneri Richardson with eye flukes, Diplostomum spp. J Fish Dis, 3, 455-465.
- Turgut E, Ozgul G (2012): Seasonal changes and host size-dependent variation in Diplostomum spp. infection of some Cyprinid Fish. Pak J Zool, 44, 123-128.
Details
| Primary Language | English |
|---|---|
| Subjects | Veterinary Surgery |
| Other ID | JA65MP87RK |
| Journal Section | Research Article |
| Authors | |
| Publication Date | December 1, 2016 |
| Published in Issue | Year 2016Volume: 63 Issue: 4 |