SciELO - Scientific Electronic Library Online

 
vol.55 número1-2Infección por helmintos parásitos en salmón coho, Oncorhynchus kisutch, durante su retorno al río Simpson, ChileEfecto in vitro del suero de la trucha Arco Iris (Oncorhynchus mykiss) sobre metacercarias del género Tylodelphys (Trematoda, Diplostomatidae). índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Boletín chileno de parasitología

versión impresa ISSN 0365-9402

Resumen

RAMALLO, Geraldine; TERAN, Héctor  y  TEISAIRE, Ernestina. Effects produced by Spinitectus jamundensis (Nematoda, Cystidicolidae) in the stomach of the shad, Prochilodus lineatus (Pisces, Prochilodidae). Bol. chil. parasitol. [online]. 2000, vol.55, n.1-2, pp. 36-38. ISSN 0365-9402.  http://dx.doi.org/10.4067/S0365-94022000000100010.

The presence of the nematode Spinitectus jamundensis in cardial and pyloric regions of the stomach of Prochilodus lineatus is observed. Samples of the parasitated stomach were analyzed by histological techniques using Hematoxilin-Eosin and Mallory (Azan) Heidenhain's stainnigs. The macroscopical description of the inner surface of the stomach showing damages in the parasites penetration sites, were observed. Histological observations show that the parasite enters the mucous membrane reaching muscular mucous membrane of the cardial region or the epithelial plaits in the pyloric region reaching up to the muscular layer without crossing it. In this way, the parasite reamins confined by a thin layer of connective tissue and in almost direct contact with tissue liquids. Sometimes, in host tissues as responde to the parasite presence, an increased level in the amount of lymphocytes in the surrounding tissues is observed.

Palabras llave : stomach; tissues damage.

        · texto en Español