Results 191 to 200 of about 8,211 (237)
Some of the next articles are maybe not open access.
Sperm transfer in monogenean (platyhelminth) parasites
Acta Parasitologica, 2015AbstractThere are three major groups of parasitic platyhelminths (flatworms). The digeneans and cestodes are endoparasites, while the monogeneans are ectoparasites mostly on the gills or skin of fishes. Monogeneans are hermaphrodite and, with the exception of the gyrodactylids, mostly protandrous, the male reproductive system maturing before the female
Graham, Kearn, Ian, Whittington
openaire +2 more sources
1986
Publisher Summary This chapter illustrates the role of the eggs in the biology of monogenean parasites. The life cycles of monogeneans are relatively simple compared with those of other parasitic platyhelminths (cestodes and digeneans). Most monogeneans inhabit the skin and gills of fishes, and these sites are accessible to free-swimming larvae ...
openaire +2 more sources
Publisher Summary This chapter illustrates the role of the eggs in the biology of monogenean parasites. The life cycles of monogeneans are relatively simple compared with those of other parasitic platyhelminths (cestodes and digeneans). Most monogeneans inhabit the skin and gills of fishes, and these sites are accessible to free-swimming larvae ...
openaire +2 more sources
Biochemical composition of marine monogenean parasite eggs
Molecular and Biochemical Parasitology, 2017This study on the eggs of the tropical monogenean Neobenedenia girellae presents the first detailed quantitative biochemical information of a marine parasite species' eggs. Moisture and protein composed the majority of the contents of freshly laid eggs (79.12±0.82 and 11.51±0.49% respectively) followed by lipid (2.50±0.15%).
Brazenor, Alexander K. +3 more
openaire +3 more sources
Monogenean neuromusculature: some structural and functional correlates
International Journal for Parasitology, 1998Monogenean neuromuscular systems are structurally and functionally well-differentiated, as evidenced by research on the fish-gill parasite, Diclidophora merlangi. The nervous system in the worm exhibits a raft of putative intercellular signalling molecules, localised in neuronal vesicles.
Halton, David W. +3 more
openaire +3 more sources
THE MONOGENEAN PARASITES OF CANADIAN FRESHWATER FISHES
Canadian Journal of Zoology, 1967A brief history of work performed on the Monogenea of Canadian freshwater fishes is recounted; a list indicating the host – monogenean parasite relationships of Canadian freshwater fishes is included. Dactylogyrus albertensis sp. nov., recovered from the gills of the flathead chub, Hyhopsis gracilis (Richardson), is described.
C E, Price, H P, Arai
openaire +2 more sources
Larvae and Larval Development of Monogeneans
1963Publisher Summary This chapter focusses on a group of parasitic platyhelminths generally referred to as monogenetic trematodes. A few monogeneans are viviparous and the newly-born young resemble the parents, but most are oviparous, and the newly hatched young is a larva and called an oncomiracidium.
openaire +3 more sources
Host specificity dynamics: observations on gyrodactylid monogeneans
International Journal for Parasitology, 2002The directly transmitted viviparous gyrodactylids have high species richness but low morphological and biological diversity, and many species are recorded from only a single host. They therefore constitute a guild of species ideal for studies of the evolutionary significance of host specificity.
Tor A, Bakke, Phil D, Harris, Jo, Cable
openaire +2 more sources
Diversity of monogeneans in Southeast Asia
International Journal for Parasitology, 1998The diversity of monogeneans from Southeast Asia was examined using information from the literature to show their diversity at different taxonomic (subclass, family, genera, species) levels. Knowledge of monogeneans is still incomplete in Southeast Asia and the present numbers of monogeneans are likely an underestimate of what is present on/in aquatic ...
openaire +2 more sources
Parasitology Research, 2008
Gyrodactylid monogeneans are considered to be the most invasive fish parasites. They are omnipresent on teleost fishes and host change might play a crucial role in their biology. In the present study, related fish species were kept in single- or mixed-species groups to test the ability of Gyrodactylus species to change their host fish under ...
R D, Blazek, A, Bagge, E T, Valtonen
openaire +2 more sources
Gyrodactylid monogeneans are considered to be the most invasive fish parasites. They are omnipresent on teleost fishes and host change might play a crucial role in their biology. In the present study, related fish species were kept in single- or mixed-species groups to test the ability of Gyrodactylus species to change their host fish under ...
R D, Blazek, A, Bagge, E T, Valtonen
openaire +2 more sources
Haemoglobin in a Monogenean, Oculotrema hippopotami
Nature, 1970Oculotrema hippopotami is a Polystomatid Monogenean that lives around the eye of the Hippopotamus. The anterior two-thirds of the body of mature worms is a dark red colour, while the posterior part, including the haptor, is almost colourless. Tests have shown that red colour is due to haemoglobin.
openaire +2 more sources