INBIOSUR   25013
INSTITUTO DE CIENCIAS BIOLOGICAS Y BIOMEDICAS DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Lernaeosis in Cnesterodon decemmaculatus (Cyprinodontiformes, Poecilidae) and observations on the lethal effect in small sized species of hosts
Autor/es:
TANZOLA RD; GUAGLIARDO SE
Revista:
Neotropical Helminthology
Editorial:
Asociación Peruana de Helmintología e Invertebrados Afines (APHIA)
Referencias:
Lugar: Lima; Año: 2016 vol. 10 p. 275 - 280
Resumen:
Lernaea cyprinacea is one of the best known species in the genus, with a wide global distribution, that causes lesions on the skin of fresh water fish that foster secondary infections in the host. The aim of the present study was to record the presence of L. cyprinacea on Cnesterodon decemmaculatus and to study the lethal effect of this copepod on a host species of small size. The specimens were parasitized by post-metamorphic stages of females. The ulcerous lesions rapidly became contaminated with dense Saprolegnia sp. mycelia and they were associated with Epistylis, a ciliated peritrichid. Histological examination showed invasion of the visceral mass which excerted mechanical compression on the muscle, kidney, spleen and gonad. Fibrous encapsulation and inflammatory infiltrate were observed as a response. The intense visceral invasion provoked in C. decemmaculatus in the reproductive stages makes the fish potentially susceptible to lethal consequences, with consequent damage at the populational level.