Korean J Parasitol.  2012 Jun;50(2):177-180. 10.3347/kjp.2012.50.2.177.

Cercaria caribbea LVIII Cable, 1963 (Digenea: Cyathocotylidae) in the Republic of Korea and Its Surface Ultrastructure

• Han ET
• Park JH
• Chai JY

• KMID: 1384750
• DOI: http://doi.org/10.3347/kjp.2012.50.2.177

Abstract

Cercaria caribbea LVIII Cable, 1963 (Digenea: Cyathocotylidae) was detected from a brackish water gastropod species (Cerithideopsilla cingulata) in a coatal area of Shinan-gun, Jeollanam-do (Province), the Republic of Korea, and its surface ultrastructure was studied using a scanning electron microscope. The cercariae were found freely swimming or enveloped within daughter sporocysts when the snail host was mechanically broken. They were morphologically characterized by a linguiform and ventrally concave body, a long and bifurcated tail, and the presence of a holdfast (=tribocytic) organ posterior to the ventral sucker. On the whole ventral and dorsal surfaces, peg-like tegumental spines were densely distributed. Around the oral sucker, several sensory papillae, each with a short cilium, were distributed, and on the tail, sensory papillae, each with an extensively long cilium, were observed. This is the first record describing a cyathocotylid cercaria from a brackish water gastropod in the Republic of Korea.

Keyword

Cercaria caribbea LVIII; cercaria; trematode; gastropod; surface ultrastructure

MeSH Terms

Animal Structures/ultrastructure
Animals
Cercaria/*isolation & purification/*ultrastructure
Gastropoda/*parasitology
Microscopy, Electron, Scanning
Republic of Korea
Surface Properties