A large scale investigation on trypanorhynch cestode infestation of tropical marine fishes was carried out along the Northeast Brazilian coast in the summer of 1991 and 1993. A total of 798 fish specimens belonging to 57 species and 30 families were examined. Metacestodes of 11 different trypanorhynchs were found: Callitetrarhynchus gracilis, Dasyrhynchus giganteus, Grillotia sp., Nybelinia edw...

The cestode Schistocephalus solidus is a simultaneous hermaphrodite that grows in 2 intermediate hosts and reproduces rapidly within a few days in the gut of a bird. Reproduction takes place by self- or cross-fertilization. Here, it was tested whether egg production differs between S. solidus that reproduce alone and those that are allowed to reproduce in pairs. Egg production in an in vitro sy...

In this study the cleavage divisions and the ultrastructural analysis of early embryos as well as cellular organisation of infective oncosphere of the anoplocephalid cestode Mosgovoyia ctenoides are described. The early cleavage is unequal and results in the formation of three types of blastomeres: 2 large macromeres containing large electron dense granules, 3 medium-size mesomeres and several ...

Histochemical studies performed on livers of the bluegill, Lepomis macrochirus, containing the larval cestode, Proteocephalus sp., indicated that the cellular capsule surrounding the parasite was composed of glycogen, basic protein with large concentrations of protein-bound amino groups, and tyrosine. An amorphous layer between the capsule and parasite gave positive reactions for mucoproteins, ...

A scanning electron-microscope examination of the scolex of Houttuynia struthionis, a cestode of ostriches, was undertaken in order to study its surface structure. The scolex differs from those of other subfamilies in the family Davaineidae in that it does not have scale-like spines covering the base of the rostellum. Instead, the base is covered with small hooks resembling the larger rostellar...

The Phylum Platyhelminthes is divided into two groups: cestodes (tapeworms) and trematodes (flukes). Tapeworms live in vertebrate intestines, their larval forms can be found the flesh of animals that these eat. adult tapeworm has no digestive tract instead absorbs nutrients through its body surface. worm's head, or scolex, a mechanism for attaching to host's intestinal wall. Knowledge basic epi...

Background: The Sunda pangolin, Manis javanica Desmarest, 1822, is a critically endangered species of pangolin that occurs from Indonesia to southern China. Knowledge the biology and ecology M. limited, however there have been previous reports parasites, including nematodes, protozoans, ticks, cestode. Methods: An illegal shipment 88 carcasses, originally collected wild populations throughout s...

1. Calidris mauri Cabanis (Western Sandpiper) exhibits a pronounced post-growth age-dependent difference in small intestine size during southward migration, such that the later-migrating juveniles have larger small intestines than do the adults. Potential causes and consequences of this age-dependent difference are examined. 2. Premigrant juveniles of full structural size had small intestines t...

Echinococcus multilocularis is a zoonotic cestode with a distribution encompassing the northern hemisphere that causes alveolar hydatid disease in people and other aberrant hosts. E. multilocularis is not genetically uniform across its distribution, which may have implications for zoonotic transmission and pathogenicity. Recent findings of a European-type haplotype of E. multilocularis in wildl...

The faunas of parasitic helminths and arthropods of 87 Sherman's fox squirrels (Sciurus niger shermani) and 32 Big Cypress fox squirrels (Sciurus niger avicennia) collected from Florida (USA) over a 6-yr period (1988 to 1993) were compared. One acanthocephalan, one cestode, nine nematodes, one flea, three sucking lice, three mites, one tick, and one dipteran larva were identified. Citellinema b...