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  • Küçük Resim
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    The evaluation of gnathiid (Crustacea: Isopoda: Gnathidae) parasitism in goldblotch grouper (Epinephelus costae Staindahner, 1878) in the northeastern Mediterranean Sea using the self-organizing map (SOM)
    (Springer, 2011) Genc, Ercument; Oral, Mustafa; Erol, Cavit
    The self-organizing map (SOM), which is widely used in economics and engineering applications, is a type of artificial neural network trained without supervision. SOM is used to represent multidimensional data in much lower dimensional spaces-usually in two dimensions (2D)-while preserving the topological properties of the input space. In this study, 2D maps were produced by using SOM to display the relationship between seasons, length, weight, and isopod infestation of goldblotch grouper (Epinephelus costae Staindahner, 1878). This is first study of gnathiid isopod praniza larvae infesting goldblotch grouper (E. costae Staindahner, 1878) in the northeast Mediterranean Sea (36A degrees 36' N-36A degrees 07' E, 35A degrees 52' N-36A degrees 25' E) in Iskenderun Bay. Fish were sampled monthly from Iskenderun Bay for a period of 12 months from 2006 May to 2007 April (Nt = 331, Wt +/- SD (range) = 392.92 +/- 72.76g (169 - 927g), TLt +/- SD(range) = 30.85 +/- 3.88 cm (17 - 48.3 cm). Gnathia sp. was only extracted from the epithelium of the buccal cavity and internal side of the gills arch. The monthly patterns in infested fish samples (Np = 109, Wp +/- SD (range) - 349.25 +/- 182.79g (169 - 853g), TLt +/- SD(range) - 26.05 +/- 12.68cm (18.2 - 45.0cm)) infestation rates (mean prevalence, P = 28.12% (0-60) and mean intensity (MI +/- SD - 23.69 +/- 14.78(4 - 82), the relationship between length-weight and infested/non-infested fish were calculated. Although the gnathiid parasite high intensities were observed in fish, there was no significant effect on the growth and general health condition of infested fish.
  • Küçük Resim
    Öğe
    Kuzey Doğu Akdeniz'den avlanan ziber (Epinephelus costae staindahner, 1878)'in gnathiid parazit varlığı yönünden incelenmesi
    (Hatay Mustafa Kemal Üniversitesi, 2007) Erol, Cavit; Genç, Ercüment
    Bu çalısma skenderun Körfezi (Kuzey Dogu Akdeniz 36°36N?36°07E, 35°52N?36°25E)'ndeki ziber (Epinephelus costae)'lerin gnathiid isopod praniza larvası ile infeste olduklarını gösteren ilk kayıt niteligindedir. Balık örnekleri Mayıs 2006-Nisan 2007 tarihleri arasında skenderun Körfezi'nden aylık olarak 12 ay boyunca (Nt= 331, CAt ± SD (aralık)= 392,92 ± 72,76 g (169?927 g), TBt ± SD (aralık)= 30,85 ± 3,88 cm (17 ? 48.3 cm)) elde edilmistir. Gnathia sp. agız boslugu epitelinden ve solungaç kemerlerinin iç kısmından (solungaç dikenleri) elde edilmistir. Parazitli (infeste) balık örneklerinin aylık degerleri (Np= 109, CAp ± SD (aralık)= 349,25 ± 182,79 g (169 ? 853 g), TBt ± SD (aralık)= 26,05 ± 12,68 cm (18,2 ? 45,0 cm)), parazitlenme oranları (ortalama parazitlenme oranı, P= 28.12% (aralık) (0 - 60)) ile parazitin bir balıkta bulunma sıklıgı (MI ± SD= 23,69 ± 14,78 (aralık) (4 - 82)), toplam boy (TB) ve canlı agırlık (CA) iliskisi lee parazitli/parazitsiz balıkların oranları hesaplanmıstır. Bu çalısma ile gnathiid parazit varlıgına ve yüksek infestasyon yogunluguna karsın, ziberlerin büyüme ve genel saglık kosullarına belirgin bir etkisinin olmadıgı ileri sürülmüstür. 2007, 47 sayfa
  • Küçük Resim
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    Occurrence of Trypanosoma sp in wild African sharptooth catfish (Clarias gariepinus Burchell, 1822) in the River Asi (north-eastern Mediterranean), Turkey
    (Tubitak Scientific & Technological Research Council Turkey, 2010) Konas, Egemen; Genc, Ercuement; Kaya, Galip; Erol, Cavit
    Fifteen African sharptooth catfish (Clarias gariepinus Burchell, 1822) were collected from the River Asi (River Orontes) in Antakya (Hatay, Turkey) in November 2007, and fish blood samples were examined for the presence of blood parasites. The existence of infection with Trypanosoma (hemoparasite) was identified in 13 out of the 15 fish specimens. Currently there are no records of the presence of any species of Trypanosoma infecting Clarias gariepinus in Anatolia. Thus this study is the first report of Trypanosoma sp. infections in Clarias gariepinus in Turkey.
  • Küçük Resim
    Öğe
    Occurrence of Trypanosoma sp. in wild African sharptooth catfish (Clarias gariepinus Burchell, 1822) in the River Asi (north-eastern Mediterranean), Turkey
    (2010) Konaş, Egemen; Genç, Ercüment; Kaya, Galip; Erol, Cavit
    Fifteen African sharptooth catfish (Clarias gariepinus Burchell, 1822) were collected from the River Asi (River Orontes) in Antakya (Hatay, Turkey) in November 2007, and fish blood samples were examined for the presence of blood parasites. The existence of infection with Trypanosoma (hemoparasite) was identified in 13 out of the 15 fish specimens. Currently there are no records of the presence of any species of Trypanosoma infecting Clarias gariepinus in Anatolia. Thus this study is the first report of Trypanosoma sp. infections in Clarias gariepinus in Turkey.
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    Öğe
    Parasitological Investigation on Commercially Important Fish and Crustacean Species Collected from the TIGEM (Dortyol Turkey) Ponds
    (Medwell Online, 2010) Yildirim, Yasemin Bircan; Zeren, Alaeddin; Genc, Ercumet; Erol, Cavit; Konas, Egemen
    This study has been conducted in Dortyol TIGEM (General Directorate of Agricultural Enterprises) ponds where Mustafa Kemal University, Faculty of Fisheries, Dortyol-Yeniyurt,Turkey, Fishery Products Research and Application Unit is established. In this field which has a potential for fishery product farming, no pervious study has been detected on parasite existence. In order to determine the existence of parasite organisms in. the fishery products living in TIGEM ponds in Dortyol district where local fishing activities are being conducted within the borders of Hatay province and it is expected to project and implement advanced level of farming activities in the near future, 550 fish and 32 arthropod samples (167 gray mullets (Mugil cephalus Linnaeus, 1758), 188 tilapias (Tilapia zilli Gervais, 1848), 70 sea bass (Dicentrarchus labrax Linnaeus, 1758), 125 marmid (Acanthabrama marmid Heckel, 1843), 32 blue crab (Callinectes sapidus Rathbun, 1896)) have been taken and examined during the year between April 16th, 2007 and March 17th, 2008. In this study, from Dortyol TIGEM ponds, Diplozoon paradoxum (Nordman, 1832) and Tetraonchus sp. (Diesing; 1858) have been detected in Tilapia zilli (Gervais, 1848) and Diplozoon paradoxum (Nordman, 1832) and Tetraonchus sp. (Diesing, 1858), which is a Monogenean parasite has been detected in Acanthobrama marmid (Heckel, 1843) as a new host and is being reported for the first time.
  • Küçük Resim
    Öğe
    Parasitological investigation on commercially important fish and crustacean species collected from the TIGEM (Dortyol Turkey) ponds
    (2010) Yildirim, Yasemin Bircan; Zeren, Alaeddin; Gene, Ercumet; Erol, Cavit; Konas, Egemen
    This study has been conducted in Dortyol TIGEM (General Directorate of Agricultural Enterprises) ponds where Mustafa Kemal University, Faculty of Fisheries, Dortyol-Yeniyurt,Turkey, Fishery Products Research and Application Unit is established. In this field which has a potential for fishery product farming, no pervious study has been detected on parasite existence. In order to determine the existence of parasite organisms in the fishery products living in TIGEM ponds in Dortyol district where local fishing activities are being conducted within the borders of Hatay province and it is expected to project and implement advanced level of farming activities in the near future, 550 fish and 32 arthropod samples (167 gray mullets (Mugil cephalus Linnaeus, 1758), 188 tilapias {Tilapia zilli Gervais, 1848), 70 sea bass (Dicentrarchus labrax Linnaeus, 1758), 125 marmid (Acanthabrama marmid Heckel, 1843), 32 blue crab (Callinectes sapidus Rathbun, 1896)) have been taken and examined during the year between April 16th, 2007 and March 17th, 2008. In this study, from Dortyol TIGEM ponds, Diplozoon paradoxum (Nordman, 1832) and Tetraonchus sp. (Diesing, 1858) have been detected in Tilapia zilli (Gervais, 1848) said Diplozoon paradoxum (Nordman, 1832) and Tetraonchus sp. (Diesing, 1858), which is a Monogenean parasite has been detected in Acanthobrama marmid (Heckel, 1843) as a new host and is being reported for the first time. © Medwell Journals, 2010.