Capillariid nematodes in Brazilian turkeys, Meleagris gallopavo (Galliformes, Phasianidae): pathology induced by Baruscapillaria obsignata and Eucoleus annulatus (Trichinelloidea, Capillariidae)

Abstract

Data on helminths of turkeys (Meleagris gallopavo Linnaeus, 1758) are relatively very few and thus, the action of the parasitism affecting these hosts is little known. In Brazil, investigations related to the pathology induced by helminths in turkeys are restricted to those of the pioneer paper by Barretto and Mies-Filho (1942) and more recently to the results reported by Brener et al. (2006a, b), describing the pathogenic action of the trematode Paratanaisia bragai, the nematodes Cheilospirura hamulosa, Heterakis gallinarum and the protozoan Histomas meleagridis infecting this avian host. In despite of representing the most frequent and relevant worms to parasitize Galliformes with reports worldwide, the capillariid nematodes (formerly included among the Trichiuroidea) were only listed in Brazil, occurring in several avian hosts, including turkeys, with no data on associated pathology (Costa et al. 1986, Vicente et al. 1995, except for the results obtained by Pinto et al. (2004)

Baruscapillaria obsignata: a serious cause of enteropathy and high mortality in turkeys (meleagris gallopavo)

“…Jortner et al (1967) reported that worm load of above 30 in the intestine, can cause epithelial desquamation, blunting and shortening of villi and inflammation of lamina propria in chickens. Later, Pinto et al (2008) and Barathidasan et al (2014) have observed blunting and clubbing of villi, infiltration of lamina propria with mononuclear cells and heterophils, and abnormally thickened muscular layer in Capillaria infected turkeys and guinea fowls, respectively. The gross and histomorphological tissue alterations in the present study were consistent with earlier reports.…”

“…Enteric Capillariasis caused by B. obsignata is known to occur in all birds belonging to Anseriformes, Ciconiiformes, Columbiformes, Galliformes, Piciformes and Psittaciformes (Jortner et al 1967;Rickard & Pohl 1969;Pinto et al 2004;Pinto et al 2008;Yabsley 2008;Park & Shin 2010;D' Avila et al 2011). There are few reports traced on enteric Capillariasis caused by B. obsignata infections in turkeys, and the severity of the disease was different in each report (Hurst et al 1979;De Rosa & Shivaprasad 1999;Pinto et al 2008).…”

“…There are few reports traced on enteric Capillariasis caused by B. obsignata infections in turkeys, and the severity of the disease was different in each report (Hurst et al 1979;De Rosa & Shivaprasad 1999;Pinto et al 2008). In India, Singh et al (2006) and Das et al (2015) have detected capillarid eggs in feces of few turkey birds.…”

“…Severe gastro-enteritis and mortality have been reported due to capillarid worm infections especially in Galliformes (Rickard & Pohl 1969;Baru s & Sergejeva 1989;De Rosa & Shivaprasad 1999;Singh 2010). There are few reports traced on enteric Capillariasis caused by B. obsignata infections in chickens (Jortner et al 1967), turkeys (Hurst et al 1979;De Rosa & Shivaprasad 1999;Pinto et al 2008) and rock partridges (Park & Shin 2010) globally. In India, capillarid eggs have been detected in feces of few turkeys (Singh et al 2006;Das et al 2015).…”

Two cestode species in Brazilian turkeys, Meleagris gallopavo (Galliformes, Phasianidae): pathology induced by Hymenolepis cantaniana and occurrence of Raillietina tetragona

“…Recently, results described the pathogenic action of trematodes, nematodes, and one protozoan species infecting turkeys from backyard flocks in Brazil [1][2][3] . The present data are related to the pathology induced by Hymenolepis cantaniana (Polonio, 1860) Ransom, 1909 and the occurrence of Raillietina tetragona Molin, 1858 (Eucestoda, Davaineidae) infecting specimens of Brazilian turkeys, Meleagridis gallopavo.…”