{"refrec":{"BRefID":435570,"RR":"<b>Germán-Gómez, A.; Aponte, H.; Iannacone, J.</b> (2025). Analysis of the index of host specificity in metazoan parasites of Peruvian fish, <b><i>in</i></b>: Larrondo Petrie, M.M <i>et al.</i> <i>Proceedings of the 23rd LACCEI International Multi-Conference for Engineering, Education, and Technology: “Engineering, Artificial Intelligence, and Sustainable Technologies in service of society”. Hybrid Event, Mexico City, July 16 - 18, 2025.</i> pp. 1-7. <a href=\"https://dx.doi.org/10.18687/LACCEI2025.1.1.1231\" target=\"_blank\">https://dx.doi.org/10.18687/LACCEI2025.1.1.1231</a>","BEntID":433400,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Larrondo Petrie, M.M <i>et al.</i> <i>Proceedings of the 23rd LACCEI International Multi-Conference for Engineering, Education, and Technology: “Engineering, Artificial Intelligence, and Sustainable Technologies in service of society”. Hybrid Event, Mexico City, July 16 - 18, 2025.</i> pp. 1-7. <a href=\"https://dx.doi.org/10.18687/LACCEI2025.1.1.1231\" target=\"_blank\">https://dx.doi.org/10.18687/LACCEI2025.1.1.1231</a>","DocTypID":17,"DocType":"Book chapters","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Germán-Gómez, A.; Aponte, H.; Iannacone, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Germán-Gómez, A.; Aponte, H.; Iannacone, J.","Englishabstract":"Host specificity, which reflects the number of hosts a parasite can infect, is a key concept in disease ecology due to its connection with zoonotic parasites. This study assessed the specificity of metazoan parasites in marine and freshwater fish from Peru using indices such as STD, VarSTD, STD*, and βSPF. The results showed that parasites like Lecithocladium cristatum and Helicometra fasciata have low specificity (STD ≈ 5), whereas Procamallanus (Spirocamallanus) pintoi, Proleptus carvajali, and Lernanthropus huamani exhibit high specificity. The lack of correlation between the number of hosts and the indices indicates that specificity depends more on adaptation to the host than on the number of infected species. 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