Species of the Genera Gastrothylax Poirier, 1883 and Carmyerius Stiles and Goldberger, 1910 (Paramphistomoidea: Gastrothylacidae) Occurring in Philippine Ruminants

Issue Date

1-2015

Abstract

Two species, including a new one of Gastrothylax and two species of Carmyerius from ruminants in the Philippines, are identified, described and illustrated based on present materials. These are Gastrothyalx crumenifer, Gastrothylax caraphilensis new species, Carmyerius gregarius and Carmyerius synethes. The histo-morphology of their muscular organs as seen in median sagittal sections is detailed. Gastrothylax caraphilensis is characterized by its small size, ceca extending to the level of the posterior border of the testes or beyond them; pharynx of the paramphistomum type, acetabulum of the carmyerius type, terminal genitalium of the bubalis type in median sagittal section; ventral pouch roughly triangular in cross section with the apex directed dorsally. It is differentiated from two other valid species of the genus namely G. crumenifer and G. compressus. Gastrothylax glandiformis, G. indicus, G. globoformis, G. zhonghuaensis and G. boyangensis were inadequately described in literature and features of their muscular organs are not known. Until new specimens are examined for these features as seen in median sagittal sections, they are considered species inquirendae: The value of employing the shape oroutline of the ventral pouch as seen in cross section in combination with other characteristics in separating species of the pouched amphistomes is discussed.

Source or Periodical Title

Philippine Journal of Veterinary Medicine

ISSN

0031-7705

Volume

52

Issue

2

Page

89-98

Document Type

Article

Language

English

Subject

Carmyerius, Gastrothylax, Gastrothylax caraphilensis, Pouched amphistome, Ruminant

Digital Copy

yes

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