Prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) in Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil

Abstract

The present work studied the prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala; Neoechinorhynchidae) from curimbatá, Prochilodus lineatus Valenciennes, 1836. Eighteen fishes with averages of 46.7 +/- 1.1 cm length and 1,674.8 +/- 75.6 g weight were collected with net, bimonthly from December 1995 thru December 1996 in the hydroelectric power station of Volta Grande Reservoir (Cemig), Minas Gerais, Brazil. From analysed fishes, 15 were infected with acanthocephalans in the intestine (prevalence 83.3%). The greatest mean intensity occurred in August 1996 with 66.5 (16 to 208) parasites. Histopathological analysis showed complete desquamation of the intestinal epithelium with severe hyperplasia and hypertrofia of the goblet cells. Severe inflammatory reaction at the submucosa, displacement of their sheaf, associated with oedema and mononuclear and eosinophilic infiltration were observed.

Haematological response of curimbas Prochiloduslineatus, naturally infected with Neoechinorhynchuscuremai

“…The prevalence and histopathology of Neoechinorhynchus curemai (Acanthocephala: Neoechinorhynchidae) infection in P. lineatus from the basin of the Paraná River have been described by Martins et al . () and Santos et al . ().…”

“…Neoechinorhynchus curemai -infected P. lineatus showed severe inflammatory response in the submucosa, associated with oedema and mononuclear infiltration, and complete desquamation of the intestinal epithelium with severe hyperplasia and hypertrophy of the goblet cells (Martins et al ., 2001). Many other teleosts have shown higher monocyte counts associated with infection: Leporinus macrocephalus Garavelo & Britski 1988 with Goezia leporine (Martins et al ., 2004) and Paralichthys olivaceus (Temminck & Schlegel, 1846) with Neoheterobothrium hirame (Nakayasu et al ., 2005).…”

Influence of the seasonal and environmental patterns and host reproduction on the metazoan parasites of Prochilodus lineatus

“…Few studies related to the parasite ecology of this species on the Upper Paraná River floodplain have been carried out (Ranzani-Paiva, et al, 2000). A recent work related to the parasite ecology of this species was developed by Martins et al (2001). Therefore, the study of the seasonal dynamics of parasitism levels serves as a tool to understand broad aspects that determine the population biology of the host-parasite system (Chubb, 1982).…”

The impact of Neoechinorhynchus buttnerae (Golvan, 1956) (Eoacanthocephala: Neochinorhynchidae) outbreaks on productive and economic performance of the tambaqui Colossoma macropomum (Cuvier, 1818), reared in ponds

“…N. buttnerae can cause intestinal obstruction and intestinal wall lesions that lead to the fish death (Martins et al, 2001;Santos et al, 2013). Although several studies have reported the occurrence of this parasite in C. macropomum, its impact on production systems was not quantified.…”