caa a22 4500 445342285 CHVBK 20180317142817.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00436-010-2188-0 doi (NATIONALLICENCE)springer-10.1007/s00436-010-2188-0 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) [Elektronische Daten] [Ercument Genc, Mustafa Oral, Cavit Erol] 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 (36°36′ N-36°07′ E, 35°52′ N-36°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, $$ {\hbox{Wt}}\pm {\hbox{SD}}\left( {\hbox{range}} \right) = {392}.{92}\pm {72}.{76}\,{\hbox{g}}\left( {{169} - {927}\,{\hbox{g}}} \right) $$,$$ {\hbox{TLt}}\pm {\hbox{SD}}\left( {\hbox{range}} \right) = {3}0.{85}\pm {3}.{88}\,{\hbox{cm}}\left( {{17} - {48}.{3}\,{\hbox{cm}}} \right) $$). 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, $$ {\hbox{Wp}}\pm {\hbox{SD}}\left( {\hbox{range}} \right) = {349}.{25}\pm {182}.{79}\,{\hbox{g}}\left( {{169} - {853}\,{\hbox{g}}} \right) $$, $$ {\hbox{TLt}}\pm {\hbox{SD}}\left( {\hbox{range}} \right) = {26}.0{5}\pm {12}.{68}\,{\hbox{cm}}\left( {{18}.{2} - {45}.0\,{\hbox{cm}}} \right) $$) infestation rates (mean prevalence, P = 28.12% (0-60) and mean intensity $$ \left( {{\hbox{MI}}\pm {\hbox{SD}} = {23}.{69}\pm {14}.{78}\left( {{4} - {82}} \right)} \right. $$, 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. Springer-Verlag, 2010 Genc Ercument Fish Disease Laboratory, Department of Aquaculture, Faculty of Fisheries, Mustafa Kemal University, 31200, Meydan Mh. 512 Sk., Iskenderun, Hatay, Turkey aut Oral Mustafa Department of Computer Engineering, Faculty of Engineering and Architecture, Cukurova University, 01330, Balcali, Adana, Turkey aut Erol Cavit Fish Disease Laboratory, Department of Aquaculture, Faculty of Fisheries, Mustafa Kemal University, 31200, Meydan Mh. 512 Sk., Iskenderun, Hatay, Turkey aut Parasitology Research Springer-Verlag 108/6(2011-06-01), 1417-1424 0932-0113 108:6<1417 2011 108 436 https://doi.org/10.1007/s00436-010-2188-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00436-010-2188-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Genc Ercument Fish Disease Laboratory, Department of Aquaculture, Faculty of Fisheries, Mustafa Kemal University, 31200, Meydan Mh. 512 Sk., Iskenderun, Hatay, Turkey aut NATIONALLICENCE 700 1- Oral Mustafa Department of Computer Engineering, Faculty of Engineering and Architecture, Cukurova University, 01330, Balcali, Adana, Turkey aut NATIONALLICENCE 700 1- Erol Cavit Fish Disease Laboratory, Department of Aquaculture, Faculty of Fisheries, Mustafa Kemal University, 31200, Meydan Mh. 512 Sk., Iskenderun, Hatay, Turkey aut NATIONALLICENCE 773 0- Parasitology Research Springer-Verlag 108/6(2011-06-01), 1417-1424 0932-0113 108:6<1417 2011 108 436 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer