Crustacean-acanthocephalan interaction and host cell-mediated immunity: parasite encapsulation and melanization.
Folia Parasitol (Praha)
; 55(1): 53-9, 2008 Mar.
Article
en En
| MEDLINE
| ID: mdl-18578167
ABSTRACT
Host-parasite interactions of Pomphorhynchus laevis (Müller, 1776) in naturally infected amphipod, Echinogammarus stammeri (Karaman), from the Brenta River (northern Italy) are described. A fully developed acanthocephalan larva occupies a large portion of an amphipod's haemocoelic space; thus, the parasite frequently induces displacement of host digestive tract and other internal organs. However, no apparent damage to the host's internal structures was observed. Within the haemocoel of E. stammeri, each larva of P. laevis is surrounded with a membranous layer, formed by microvilli, which maintains intimate contact with the amphipod's internal organs and haemocytes. Three types of circulatory haemocytes were identified based upon their distinct appearance hyaline cell, semi-granular cell and granular cell. Echinogammarus stammeri haemocytes surrounded acanthocephalan larvae and in some instances a partially and/or totally melanized P. laevis larva was noticed. Interestingly, no melanized larvae were found in E. stammeri parasitized with other acanthocephalans namely Echinorhynchus truttae (Schrank, 1788), Polymorphus minutus (Goeze, 1782) and Acanthocephalus clavula (Dujardin, 1845).
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Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
3_ND
Problema de salud:
3_zoonosis
Asunto principal:
Anfípodos
/
Acantocéfalos
/
Interacciones Huésped-Parásitos
Límite:
Animals
País/Región como asunto:
Europa
Idioma:
En
Revista:
Folia Parasitol (Praha)
Año:
2008
Tipo del documento:
Article
País de afiliación:
Italia