Helminthofauna of Opisthonema liberate and Harengula thrissina (Osteichthyes: Clupeidae) from Chamela Bay, Jalisco, Mexico |
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Authors: | Pérez-Ponce de León G García Prieto L Rosas Villa C |
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Institution: | Laboratorio de Helmintología, Instituto de Biología, UNAM, Ap. Postal 70-153, C.P. 04510 México, D.F. ppdleon@servidor.unam.mx |
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Abstract: | We collected helminths from the "sardines" Harengula thrissina (N = 61) and Opisthonema libertate (n = 43), from Chamela Bay, Jalisco State, Mexico (12 and six species, respectively). The nematode Pseudoterranova sp., reached the highest values of prevalence and mean abundance in O. libertate (11.6% and 0.13 worms per host, respectively), while in H. thrissina the digenean Parahemiurus merus reached a prevalence of 49.1% and a mean abundance of 1.40 worms per host. Low similarity values (qualitative and quantitative) between helminths of both host species is a result of their opportunistic feeding habits (100% of the parasitic species in H. thrissina and 66% of those from O. libertate infect their host from prey) and differential exposure to helminth larvae. |
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