منابع مشابه
Trematode Parasites of Man
This little pamphlet is a United States Government publication, the seventeenth bulletin of the Hygenic Laboratory. It consists of 52 pages of letterpress with 88 excellent illustrations, and in addition a bibliography and two indices. It has been written in response to recent requests to the author for information in regard to the trematodes which are parasitic to man, and is offered as a read...
متن کاملThe Larvae of Some Monogenetic Trematode Parasites of Plymouth Fishes
The Order Monogenea of the Class Trematoda contains (Sproston, 1946) upwards of 679 species, but in only twenty-four of these species has a larval form been described. Of these larvae, fourteen belong to adults that parasitize fresh-water fishes, amphibians or reptiles, and ten to adults that parasitize marine fishes. Udonella caligorum is known (Sproston, 1946) hot to have a larval stage in it...
متن کاملBiomass and productivity of trematode parasites in pond ecosystems.
1. Ecologists often measure the biomass and productivity of organisms to understand the importance of populations and communities in the flow of energy through ecosystems. Despite the central role of such studies in the advancement of freshwater ecology, there has been little effort to incorporate parasites into studies of freshwater energy flow. This omission is particularly important consider...
متن کاملDiversity increases biomass production for trematode parasites in snails.
Increasing species diversity typically increases biomass in experimental assemblages. But there is uncertainty concerning the mechanisms of diversity effects and whether experimental findings are relevant to ecological process in nature. Hosts for parasites provide natural, discrete replicates of parasite assemblages. We considered how diversity affects standing-stock biomass for a highly inter...
متن کاملThe reciprocal influence of trematode parasites and malathion
To examine the interactions of disease and pollution on amphibian populations around the world, I investigated the effect of infection on contaminant susceptibility in pickerel frog, Rana palustris, larvae. I conducted standard 48-hr toxicity tests to examine effect of trematode parasite, Echinostoma trivolvis, infection (0, 10, or 30 cercaria) on the susceptibility of pickerel frog tadpoles to...
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ژورنال
عنوان ژورنال: Nature
سال: 1963
ISSN: 0028-0836,1476-4687
DOI: 10.1038/197616b0