Extraintestinal Migration of Centrorhynchus sp. (Acanthocephala: Centrorhynchidae) in Experimentally Infected Rats

Abstract

Abstract:Reptiles were known to serve as paratenic hosts for Centrorhynchus (Acanthocephala: Centrorhynchidae) in Korea, but the infection course in experimental animals was not elucidated yet. In this study, the tiger keelback snakes (Rhabdophis tigrinus) were collected and digested with artificial pepsin solution, and the larvae of Centrorhynchus were recovered from them. Then, the collected larvae were orally infected to rats for developmental observations. In rats, all the larvae were observed outside the intestine on day 3 post-infection (PI), including the mesentery and abdominal muscles. As for the development in rats, the ovary of Centrorhynchus sp. was observed at day 15 PI, and the cement glands were 3 in number. Based on the morphological characteristics, including the arrangement of proboscis hooks, these larvae proved to be a species of Centrorhynchus, and more studies were needed for species identification.

The genome, transcriptome, and proteome of the fish parasite Pomphorhynchus laevis (Acanthocephala)

“…Under unsuitable conditions acanthocephalans may penetrate the intestinal wall of their vertebrate hosts, which can elicit fatal peritonitis [9]. These migrating worms also enter mesenteries and organs such as the liver, with serious consequences for the host's health [10]. Even if they remain in the digestive tract, thorny-head worms damage the host tissue through their usually hook-bearing attachment organ, the proboscis [11,12].…”

The helminth fauna of Apathya cappadocica (Werner, 1902) (Anatolian Lizard) (Squamata: Lacertidae) from Turkey

“…Amphibians and reptiles serve as paratenic hosts for some acanthocephalan species that mature in fl esh-eating birds, and species of Centrorhynchus are known to be present in frogs, lizards and snakes. Centrorhynchus is the largest acanthocephalan genus having almost 90 species, and these are parasites mainly of birds of the orders Falconiformes and Strigiformes (Choi et al, 2010). In our study, this species was observed in 3 of 21 infected host lizard (14 %).…”

Histopathology of lesions caused byPseudocorynosoma constrictum(Acanthocephala: Polymorphidae) in the ileum of blue-winged teal

“…Previous studies indicate than not all species of acanthocephalans produce the same type of damage or penetrate the same gut layer. For example, in vertebrate hosts like fish (Dezfuli et al , 2002), amphibians (Heckmann et al ., 2011), marine mammals (Amin et al ., 2011, 2013) and terrestrial mammals (Choi et al ., 2010; Heckmann et al ., 2013), the complete proboscis penetrates only the mucosa, causing damage in villi, crypts and connective tissue. However, in the marine bird Leucophaeus modestus , the proboscis of Profilicolis altmani reaches the muscularis of the jejunum and ileum (Gonzales-Viera et al , 2009), which agrees with the scope of injuries associated with P. constrictum in this analysis; these lesions are possibly facilitated by the shape and length of the proboscis of this species.…”

“…1e), which could be the result of migratory movement of the worm to another site or could perhaps be the result of scars from worms that had died. The granulomas seem to be the result of new tissue covering the lesions resulting from the host's immune reaction; although other histopathological analyses have demonstrated the presence of this type of lesions (Gonzales-Viera et al , 2009; Choi et al ., 2010), no details are presented.…”