Examination of the original descriptions of genera placed within the family Opisthorchiidae has revealed that only 33 of the original 43 genera are valid members of this family. Further study of these descriptions should also reveal that many of the subfamilies are also invalid. With reference to the original descriptions of these genera, and subsequent literature, a brief survey of the family ...

The purpose of this study was to determine the extensity of gastro-intestinal helminths in stray dogs in Erzurum province (Turkey). During the investigation, stool samples were collected from 172 dogs of diff erent ages and sex from dog housing of Erzurum Metropolitan Municipality at diff erent times and examined by Fulleborn fl otation and Benedek sedimentation methods. Helminth infection was ...

INTRODUCTION The european eel is one of the major fishing objects of the Russian fishery zone of the Vistula Lagoon (Baltic Sea). This is the reason that its parasite fauna was studied within 1998-2005. MATERIAL AND METHODS Totally 142 individuals of 35-81 cm in length were examined. The parasites collected from various organs were fixed and processed according to commonly accepted methods. ...

The emotional value of placing in a given percentile of a competition (e.g., placing in the "top 10%") depends on how many competitors are involved. Five studies reveal that winning among larger groups is associated with more positive emotional reactions than winning among smaller groups, even when the objective chances for success are held constant. Participants thought that a runner would fee...

This study aimed to investigate Haplorchis taichui metacercarial infection in fish collected from the Chom Thong and Mae Taeng districts, Chiang Mai Province during November 2001 to October 2002. A total 617 cyprinoid fish of 15 species were randomly collected and examined for H. taichui metacercariae. All the species of fish were found to be infected with H. taichui. The infection rates were 9...

Narwhals are completely mottled on the back with white ventral and lateral fields that increase with age. Old males only maintain a narrow dark spotted pattern on the top of the back, whereas the rest of the body is white. Newborns are grey to brownish and develop the mottled pattern after 2 years. The rear margin of the tail flukes is markedly convex and the fin is replaced by a low ridge. Ave...