Publication:
Surface topography and ultrastructural architecture of the tegument of adult Carmyerius spatiosus Brandes, 1898

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Issued Date

2015

Resource Type

Article

File Type

application/pdf

ISSN

0001706X

DOI

10.1016/j.actatropica.2014.12.003

Other identifier(s)

2-s2.0-84920901472

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Acta Tropica. Vol 143, (2015), p.18-28

Suggested Citation

Anuracpreeda P., Phutong S., Ngamniyom A., Panyarachun B., Sobhon P. Surface topography and ultrastructural architecture of the tegument of adult Carmyerius spatiosus Brandes, 1898. Acta Tropica. Vol 143, (2015), p.18-28. doi:10.1016/j.actatropica.2014.12.003 Retrieved from: https://hdl.handle.net/20.500.14740/6164

Title

Surface topography and ultrastructural architecture of the tegument of adult Carmyerius spatiosus Brandes, 1898

Author(s)

Anuracpreeda P.
 Phutong S.
 Ngamniyom A.
 Panyarachun B.
 Sobhon P.

Abstract

Adult Carmyerius spatiosus or stomach fluke has an elongate, cylindrical-shaped, straight to slightly curved body, with conical anterior end and truncated posterior end. The worm measures about 8.7-11.2mm in body length and 2.3-3.0mm in body width across the mid-section. When observed by SEM, the tegumental surface in all part of the body appears highly corrugated with ridges and furrows, and having no spines. The ventral surface has more complex corrugation than those of the dorsal surface. Both anterior and posterior suckers have thick edges covered with transverse folds and appear spineless. The genital pore is located at the anterior part of the body. There are two types of sensory papillae on the surface: type 1 is bulbous in shape with nipple-like tips; type 2 has a similar shape with short cilia on the tip. The dorsal surface exhibits similar surface features, but papillae appear less numerous and are smaller. When observed by TEM, the tegument is divided into four layers. The first layer includes the ridges and furrows which are covered by a trilaminate membrane underlined by a dense lamina and coated externally with the glycocalyx. The second layer of the tegument is a narrow region of cytoplasm that contains high concentrations of ovoid electron lucent tegumental granules (TG1), and disc-shaped electron dense tegumental granules (TG2) as well as lysosomes. TG1 close to the surface invariably exocytose their content into bottoms of the ridges, while some TG2 are fused and have their membrane joined up with the surface membrane. The third layer is the widest middle area of the tegument which contains numerous and evenly distributed mitochondria. Both TG1 and TG2 granules are present but in much fewer number than in the first and second layers. The fourth layer is the innermost zone that rests on and couples with a thick basal lamina. The cytoplasm in this layer is loosely packed and contains numerous infoldings of the basal plasma membrane with closely associated mitochondria. It also contains fairly large numbers of TG1 and TG2 granules which are produced and transported to the tegument by one type of tegumental cells lying in rows underneath the muscular layers. © 2014 Elsevier B.V.

Subject(s)

Cytoplasm
 Endoparasite
 Mitochondrion
 Morphology
 Nematode
 Ultrastructure
 Adult
 Anatomic landmark
 Article
 Basement membrane
 Body height
 Carmyerius spatiosus
 Connective tissue
 Cytoskeleton
 Dermis
 Eukaryotic flagellum
 Genital system
 Integument
 Microvillus
 Nonhuman
 Parasite identification
 Reticular lamina
 Scanning transmission electron microscopy
 Sensory receptor
 Skin cell
 Structure activity relation
 Structure analysis
 Subsyncytial layer
 Subtegumental layer
 Surface property
 Trematode
 Ultrastructure
 Animal
 Procedures
 Scanning electron microscopy
 Trematode
 Carmyerius
 Animals
 Microscopy, Electron, Scanning
 Trematoda

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URI

https://hdl.handle.net/20.500.14740/6164

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Scopus: Year 1983-2021

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