Within-host transmission strategies of transovarial, feminizing parasites of Gammarus duebeni
نویسندگان
چکیده
منابع مشابه
Within-host transmission strategies of transovarial, feminizing parasites of Gammarus duebeni.
The amphipod Gammarus duebeni harbours several species of vertically transmitted microsporidian parasites. G. Duebeni were collected from 3 localities in the UK. Animals from Budle Bay, Northumberland, were infected with Octosporea effeminans, and those from Millport, Isle of Cumbrae and Fenham Flats, Northumberland were infected with microsporidia of the genus Nosema. We derived expected distr...
متن کاملThe effect of salinity on transovarial transmission of a microsporidian infecting Gammarus duebeni.
This is an investigation of the impact of salinity on transovarial transmission and burden of a microsporidian sex ratio distorter in the inter-tidal crustacean Gammarus duebeni. Exposure of parasitized mothers to increased salinity during the gonotrophic cycle caused an increase in parasite burden in the follicle cells and a decrease in burden in the oocytes. It appears that salinity impedes p...
متن کاملHorizontal transfer of parasitic sex ratio distorters between crustacean hosts.
Parasitic sex distorters were artificially transferred within and between crustacean host species in order to study the effects of parasitism on host fitness and sex determination and to investigate parasite host specificity. Implantation of Nosema sp. to uninfected strains of its Gammarus duebeni host resulted in an active parasite infection in the gonad of recipient females and subsequent tra...
متن کاملCellular distribution of a feminizing microsporidian parasite: a strategy for transovarial transmission.
The cellular distribution of a vertically transmitted, feminizing microsporidian was followed in its host Gammarus duebeni. In adult females the parasite was restricted to gonadal tissue, in particular primary and secondary follicle cells. Spores were diplokaryotic with a thin spore wall and a short polar filament, characteristics typical of 'early' spores involved in autoinfection. The diploka...
متن کاملThe Life and Times of Parasites: Rhythms in Strategies for Within-host Survival and Between-host Transmission
Biological rhythms are thought to have evolved to enable organisms to organize their activities according to the earth's predictable cycles, but quantifying the fitness advantages of rhythms is challenging and data revealing their costs and benefits are scarce. More difficult still is explaining why parasites that live exclusively within the bodies of other organisms have biological rhythms. Rh...
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ژورنال
عنوان ژورنال: Parasitology
سال: 1998
ISSN: 0031-1820,1469-8161
DOI: 10.1017/s0031182098002753