Şule Gürkan, Burcu Taylan, Ertan Taşkavak

Determination of the swim bladder parasite Anguillicola crassus (Nematoda, Dracunculoidea) in the European Eel, Anguilla anguilla (Linnaeus, 1758) from the locality Çamalti Tuzla of Izmir Bay, Eastern Aegean Sea

We, here, aimed to determine the presence of Anguillicola crassus, a swim bladder parasite, in 89 (male: 45, female: 44) dead European eel specimens obtained seasonally between 2020-2021 from a regional fisherman, who has fished with fyke net in the locality Tuzla of Izmir Bay, Eastern Aegean Sea. Out of 21 male European eels caught in winter, only one specimen (TL: 48.5 cm and TW: 247.12 g) had 23 swim bladder parasites (adult nematodes: 15, larvae: 8) and similarly, only one parasite was found in one specimen (TL: 37.5 cm and TW: 88.47 g) of 8 eels caught in spring. No parasite was found in the female eels. At the examinations, it was determined that all adult Anguillicola crassus specimens were females and the minimum-maximum and average length values in adult and larval parasites were, respectively, 1.5-2.5 cm (1.99 ± 0.31) and 0.7-1.3 cm (1.025 ± 2.40). Consequently, the species A. crassus, a swim bladder parasite, was found in European eels from the locality Çamalti Tuzla in two seasons (winter and spring) and this parasitic nematode were only in male eels. This study is a first and remarkable one having evidential value, which shows the presence of the species A. crassus among the eel population in the locality Çamalti Tuzla of Izmir Bay. Besides, it is a population that should be monitored due to the status of Anguilla anguilla on the IUCN red list.

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Ashworth ST, Kennedy CR, Blanc G. 2009. Density-dependent effects of Anguillicola crassus (Nematoda) within and on its copepod intermediate hosts, CambridgeCore.
Bush AO, Lafferty KD, Lotz JM, Shostak AW. 1997. Parasitology meets ecology on its own terms: Margolis et al. revisited. J Parasitol, 83(4): 575-583. PMid:9267395. https://doi.org/10.2307/3284227
De Charleroy D, Grisez L, Thomas K, Belpaire C, Ollevier F. 1990. The life cycle of Anguillicola crassus. Dis. Aquat. Org., 8: 77-84.
De Charleroy D. 1986. Parasitologisch onderzoek van de Europese paling Anguilla Anguilla L. M. Sc. dissertation. Catholic University of Leuven, Belgium.
Evans DW, Matthews MA. 1999. Anguillicola carssus (Nematoda: Dracunculoidea): first documented record of this swimbladder parasite of eels in Ireland, J. Fish Biol., 55: 665-668.
Evans DW, Matthews MA, McClintock CA. 2002. The spread of the eel swimbladder nematode Anguillicola crassus through the Erne system, Ireland. J. Fish Biol., 59: 1416-1420.
FAO, 2009. Anguilla anguilla. In Cultured aquatic species fact sheets. Text by The Danish Aquaculture Development Group (DANAQ). Edited and compiled by Valerio Crespi and Michael New. CD-ROM (multilingual).
Kottelat M, Freyhof J. 2008. Handbook of European Freshwater Fishes. Switzerland/J. Freyhof, Berlin, 2007, 646 pp. ISBN: 9782839902984.
Froese R. 2006. Cube law, condition factor and weight-length relationships: history, meta-analysis and recommendations. J Appl Ichthyol, 22(4): 241-253.
Gargouri L, Abdallah B, Maamouri F. 2006. Spatio-temporal dynamics of the nematode Anguillicola crassus in Northeast Tunisian lagoonsDynamique spatio-temporelle du nématode Anguillicola crassus des lagunes du Nord-Est de la Tunisie, Comptes Rendus Biologies, 329(10): 785-789.
Genç E, Şahan A, Altun T, Cengizler İ, Nevşat E. 2005. Occurrence of the Swimbladder Parasite Anguillicola crassus (Nematoda, Dracunculoidea) in European Eels (Anguilla anguilla) in Ceyhan River, Turkey. Turk J Vet Anim Sci, 29:661-663.
Genç E, Sangun MK, Dural M, Can MF, Altunhan C. 2008. Element concentrations in the swimbladder parasite Anguillicola crassus (nematoda) and its host the European eel, Anguilla anguilla from Asi River (Hatay-Turkey). Environ Monit Assess, 141:59–65.
Han Qiuju, Lu Jun, Duan Jizhou, Su Dongmei, Hou Xiaozhe, Li Fen, Wang Xiuli, Huang Baiqu. 2008. Gcn5- and Elp3- induced histone H3 acetylation regulates hsp70 gene transcription in yeast. Biochem, 409(3): 779–788. doi: https://doi.org/10.1042/BJ20070578.
Heitlinger EG, Dominik RL, Weclawski U, Han Y, Taraschewski H. 2009. Massive encapsulation of larval Anguillicoloides crassus in the intestinal wall of Japanese eels, Parasites and Vectors, 2:48.
Innal I, Ozmen O, Genc E. 2018. Infection of European Eel, Anguilla anguilla with the Nematode Anguillicoloides crassus from Some Estuarine Systems in Turkey. Turk J Fish and Aquat Sci, 19(11): 899-905.
Kanjuh T, Mrdak D, Piria M, Tomljanovic T, Joksimovic A, Talevski T, Milosevic D. 2018. Relationships of otolith dimension with body length of European eel Anguilla Anguilla (Linnaeus, 1758) from Adriatic catchment of Montenegro. Acta Adriatica, 59(1): 91-96. doi: 10.32582/aa.59.1.74.
Knopf K. 2006. The swimbladder nematode Anguillicola crassus in the European eel Anguilla anguilla and the Japanes eel Anguilla japonica: differences in susceptibility and immunity between a recently colonized host and the original host. J Helminthol, 80(2):129-36.
Køie M. 1988. Parasites in European eel Anguilla Anguilla (L.) from Danish freshwater, brackish and marine localities. Ophelia, 29: 301–310.
Kottelat M, Freyhof J. 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp.
Mo TA, Steien SH. 1994. First observation of the eel swimbladder nematode Anguillicola crassus in Norway. Bull Eur Ass Fish Pathol, 14: 163.
Moravec F, Taraschewski H. 1988. Revision of the Genus Anguillicola-yamaguti, 1935 (Nematoda, Anguillicolidae) of the Swimbladder of eels, including descriptions of 2 new species, anguillicola-novaezelandiae sp-n and anguillicola- papernai sp-n. Folia Parasitologica. 35:125-46.
Moravec F. 1996. Aquatic invertebartes (snails) as new paratenic hosts of Anguillicola crassus (Nematoda: Dracunculoidea) and the role of paratenic hosts in the life cycle of this parasite. Dis. Aquat. Org., 27: 237-239
Moravec F, Škoriková B. 1998. Amphibians and larvae of aquatic insects as new paratenic hosts of Anguillicola crassus (Nematoda: Dracunculoidea), a swimbladder parasite of eels. Dis. Aquat. Org., 34: 217-222
Moravec F, Konecny R. 1994. Some new data on the intermediate and paratenic hosts of the nematode Anguillicola crassus Kuwahara, Niimi et Itagaki, 1974 (Dracunculoidea) a swimbladder parasite of eels. Folia Parasitol, 41: 65-70.
Pike C, Crook V, Gollock M. 2020. Anguilla anguilla. The IUCN Red List of Threatened Species 2020: e.T60344A152845178. https://dx.doi.org/10.2305/IUCN.UK.2020-2.rlts.t60344a15 2845178.en. Downloaded on 14 February 2021.
Pilcher MW, Moore JF. 1993. Distribution and prevalence of Anguillicola crassus in eels from tidal Thames’s catchment. J Fish Biol., 43: 339-344.
Polzer M, Tarashewski H. 1993. Identification and chairacterization of the proteolytic enzymes in the developmental stages of the eel-pathogenic nematode Anguillicola crassus. Parasitol. Res. 79:24-27.
Popielarczyk R, Robak S, Siwicki KA. 2012. Infection of European eel, Anguilla anguilla (L.), with the nematode Anguillicoloides crassus (Kuwahara, Niimi et Itagaki, 1974) in Polish waters. Pol J Vet Sci, 15(2): 253-257. https://doi.org/10.2478/v10181-011-0142-4.
Rad F, Baris M, Bozaoglu SA, Temel GO, Üstündag M. 2013. Preliminary investigation on morphometrıc and biometric characteristics of female silver and yellow, Anguilla anguilla, from eastern Mediterranean (Goksu Delta/Turkey). Journal of FisheriesSciences.com, 7(3): 253.
Rolbiecki L. 2002. On the paratenic hosts in the life cycle of the nematode Anguillicola crassus in the Vistula Lagoon, Poland. Acta Ichtyol Piscat, 32(2): 109-116.
Rolbiecki L, Rokicki J. 2005. Anguillicola crassus - An alien nematode species from the swim bladders of eel (Anguilla anguilla) in the polish zone of the southern baltic and in the waters of northern Poland. Oceanol Hydrobiol St, Vol. XXXV, 1: 121-136.
Székely CS. 1994. Paratenic hosts for the parasitic nematode Anguillicola crassus in Lake Balaton, Hungary. Dis Aquat Org, 18: 11-20
Taraschewski H, Moravec F, Lamah T, Anders K. 1987. Distribution and morphology of two helminths recently introduced into European eel populations: Anguillicola crassus (Nematoda, Dracunculoidea) and Paraten uisentis ambiguus (Acanthocephala, Tenuisentidae). Dis Aquat Org, Vol. 3: 167-176.
Terech-Majewska E, Schulz P, Siwicki AK. 2015. Influence of nematode Anguillicoloides crassus infestation on the cellular and humoral innate immunity in European eel (Anguilla anguilla L.). Experimental immunology, 40(2):127-131.
Thomas K, Ollevier F. 1992. Population biology of Anguillicola crassus in the final host Anguilla Anguilla. Dis Aquat Org, 14: 163-170.
Weclawski U, Heitlinger EG, Baust T, Klar B, Petney T, San Han Y, Taraschewski H. 2013. Evolutionary divergence of the swim bladder nematode Anguillicola crassus after colonization of a novel host, Anguilla anguilla, Weclawski et al. BMC Evolutionary Biology, 13:78.
Yalçın Özdilek Ş, Solak K. 2007. The Feeding of European eel, Anguilla anguilla L. in the River Asi, Turkey. Electronic Journal of Ichthyology, 1: 26-34