Cestodes collected in spiral valves of the stingray Urotrygon chilensis from the Pacific coast of Costa Rica represent an undescribed species of Tetraphyllidea. By possessing more than 2 loculi as well as an apical sucker on each bothridium, the new species is diagnosably distinct from all other tetraphyllidean genera; therefore, a new genus is proposed for it. The new species also possesses gl...

The monorchiid trematode Huridostomum formionis Mamaev, 1970 originally described from the black pomfret, Apolectus niger, from the Gulf of Tonkin by Mamaev (1970) is redescribed based on material collected from the same host from the Visakhapatnam coast, Bay of Bengal. The redescription provides additional information on the arrangement of the enlarged spines on the anterodorsal region of the ...

A new 23-collar-spined cercaria and metacercaria are described from intertidal molluscs of the coast of New Zealand. The new cercaria found emerging from the mud snails Zeacumantus subcarinatus (Sowerby) (Prosobranchia: Batillariidae) is characterized mainly by the number and arrangement of the cephalic glands, the size of the suckers, and the size and number of the collar spines. The cercaria ...

Black spot is a common disease syndrome of freshwater fishes. This study provides information on the rank of density of the black spot agent and opercular bone alterations associated with at least one digenean, Uvulifer sp., infecting native and non-native catostomids and cyprinids of the Upper Colorado River Basin. We evaluated the density rank of pigmented metacercariae and associated alterat...

This research investigates the efficiency of pineapple production in Malaysia using stochastic frontier model with flexible risk features and a sample 290 farms by smallholders Johor. The results study indicate that trans log is best match for mean output function, while input factors, such as sucker, fertilizer, agrochemicals, labor, hormones, have positive effect on yield rising returns to sc...

This research aims to study the morphology of Zeylanicobdella arugamensis infesting tiger grouper (Epinephelus fuscoguttatus) at Lampung Bay Waters by using scanning electron microscope (SEM). The samples were obtained from body surface fuscoguttatus). has an elongated silindris with sucker in anterior and posterior. Based on results SEM , parasite a length 4 - 4.1 mm width 0.5 suckers gap midd...

A 65-year old Korean man, living in Mokpo-city, Jeollanam-do, Republic of Korea, visited a local clinic complaining of right upper quadrant pain and indigestion. At colonoscopy, he was diagnosed as having a carcinoma of the ascending colon, and thus, a palliative right hemicolectomy was performed. Subsequently, an adult fluke of Gymnophalloides seoi was incidentally found in a surgical patholog...