Morphological Survey of Bovine Setaria in the Abdominal Cavities of Cattle in Aomori and Kumamoto Prefectures, Japan

Abstract

ABSTRACT. An epidemiological survey of bovine Setaria collected from the abdominal cavities was performed morphologically on the cattle in Aomori and Kumamoto Prefectures, Japan, between August 2005 and July 2006. Fifty Setaria worms were collected from the cattle in Aomori Prefecture and 847 from those in Kumamoto Prefecture. Of these worms, 35 were identified as Setaria digitata, 14 as S. marshalli, and one as S. labiatopapillosa in Aomori Prefecture, while 816 were identified as S. digitata and 31 as S. marshalli in Kumamoto Prefecture. KEY WORDS: Aomori Prefecture, bovine Setaria, Kumamoto Prefecture.

Ultrastructural studies on Setaria digitata by scaning electron microscopy

“…Our observations were matching with the descriptions of Whitlock (1960) for S. digitata. Similarly, lactophenol cleared tapering posterior end of female worm ending in a smooth knob with a pair of lateral appendages anterior to the knob were in confirmity with the observations of Rhee et al (1994) and Subhachalat et al (1999) where as male worm having three pairs of pre-cloacal, a pair of adcloacal, three pairs of postcloacal papillae, a single spicule and a pair of lateral appendages nearer to the tip were on line with the observations of Subhachalat et al (1999) and Nakano et al (2006).…”

“…The female worms were comparatively longer ranging from 90 to 120 mm (104 ± 8.0) and wider ranging from 0.5 to 0.86 mm (0.59 ± 0.05) than the length (30-40 mm (35 ± 2) and width (0.5-0.6 mm (0.41 ± 0.02) of male worms. The dimensions of S. digitata recorded in the present study were falling in the range reported by Innes and Shoho (1953), Nakano et al (2006) and Kim et al (2010).…”

Occurrence of Setaria labiatopapillosa in peritoneal cavity of a crossbred cattle

“…So far as reports on the epidemiology of setarial worms is concerned, more reports are available on the prevalence of S. digitata in cattle as compared to S. labiatopapillosa (Shoho 1958;Mohan 1975;Patnaik 1989;Mohanty et al 2000;Tung et al 2003;Nakano et al 2007;Kim et al 2010). Further, only scanty published reports are available on the occurrence of S. labiatopapillosa amongst Indian cattle (Patnaik 1989;Sundar et al 2005) particularly Punjab state, from where only one published report of occurrence of S. labiatopapillosa in buffalo is on the record (Singh et al 1996).…”

“…However, at times these worms and their larval stages may cause erratic parasitism to pleural cavity, anterior chamber of eye, urinary bladder, oviduct, liver and pericardium where they cause harmful effects (Soulsby 1982). Amongst various setarial species found in cattle, Setaria digitata, S. marshalli, S. cervi and S. labiatopapillosa are the commonly encountered species (Rhee et al 1994;Tung et al 2003;Sundar et al 2005;Nakano et al 2007;Bazargani et al 2008). The current study reports the occurrence of S. labiatopapillosa in cross-bred cattle from Ludhiana district of Punjab state.…”

Filarial infections in semi-wild cattle of Northeast India: first record of Setaria digitata (von Linstow 1906) in Bos frontalis (Lambert 1804)

“…It has been reported that the adult worm of this genus does not show any apparent pathogenic effect to the host (Nakano et al 2006), however, sheep, goat and horse serve as intermediate host and the infective larvae are transmitted to these hosts by mosquito vectors. In the intermediate hosts, the larvae can migrate to the central nervous system and cause severe clinical manifestations such as myelopathy and encephalopathy (Subhachalat and Adachi 1997;Jayasinghe and Wijesundera 2003).…”