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Parasitism in Medical News

Parasites a key to the decline of red colobus monkeys in forest fragments

... into contact with more parasites. Their compromised nutritional status also weakens them, giving parasites the edge, Gillespie said. We asked how parasitism plays into this dynamic of some species doing well and others not doing well after forest fragmentation, Gillespie said. This is giving us a new ...

Reasons why men die earlier

... species where males die younger than females, the males suffer a disproportionately high rate of parasitism. The authors also show that male-biased parasitism is the general rule among mammals, and that it is most extreme in those species where male-male competition for mates is most severe. Taken together, ...
Parasitism in Biological News

NC State researchers get to root of parasite genome

... at NC State, co-director of the Center for the Biology of Nematode parasitism and the corresponding author on a scientific paper describing the ... at NC State, co-director of the Center for the Biology of Nematode parasitism and a co-author of the paper. The study is published online this week in ...

ISU researchers help map first plant-parasitic nematode genome sequence

... research associate, Noureddine Hamamouch, used the current known parasitism genes to identify the full suite or predicted parasitism genes in the root-knot nematode genome. With this sequencing done, Baum ...

A bee's future as queen or worker may rest with parasitic fly

... flies may encourage worker behavior in some bees. "We often think of parasitism in terms of it affecting an animal's fitness, its survival or its ability ... look for complicated ecological relationships between different species. parasitism may encourage sociality in some situations. Here it is promoting social ...

New CU-Boulder study shows diversity decreases chances of parasitic disease

... and bubonic plague, he said. "In the absence of parasites, the toads and frogs are pure competitors," Johnson said. "But when trematode parasitism is present in the ecosystem, the adage 'the enemy of my enemy is my friend' comes into play for the toads, which are essentially shielded from ...

Worm genome offers clues to evolution of parasitism

... tools, we can analyze the development, behavior and ecology of this highly unusual worm to aid in understanding the evolutionary changes that allowed parasitism to occur," says co-author Richard K. Wilson, Ph.D., director of Washington University's Genome Sequencing Center. ...

Insight into the evolution of parasitism

... ecosystems on Earth. Some, as parasites, are major pathogens to humans, animals and plants. Within the group of nematodes, at least seven forms of parasitism have developed independently from one another. One member of the nematode group has acquired a certain degree of fame: due to its humble lifestyle, ...

Mice mothers devote energies to offspring when life is threatened

... findings have been published in New Scientist magazine. She writes, "Organisms are predicted to decrease investment in current reproduction when parasitism has the greatest impact on current reproductive ability." In other words, "infection in animals typically leads to responses that invest in the ...

UCR-led research team uses tiny wasp to wipe out major agricultural pest in Tahiti

... Hoddle and his colleagues released nearly 14,000 parasitic wasps at 27 sites in Tahiti between May 2005 and October 2005, resulting in rapid parasitism of glassy-winged sharpshooter eggs. By December 2005, the wasp had colonized the entire island of Tahiti, and glassy-winged sharpshooters decreased ...

Virginia Tech plant scientist leads study on genomics of parasitic plants

... point of view, we also want to gain more information about these plant species because of their unique biology. We know little about the genomics of parasitism in plants, and this study will increase our knowledge in this area. Westwood and his colleagues are studying three genera within the Orobanchaceae ...

UGA scientists engineer root-knot nematode resistance

... land. By discovering a root-knot nematode parasitism gene that's essential for the nematode to infect ... double-stranded RNA to knock out the specific parasitism gene in the nematode when it feeds on the plant roots. This knocked out the parasitism gene in the nematode and disrupted its ability to ...

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Parasitism in Biological Definition

Symbiosis

... The various forms of symbiosis include: - parasitism , in which the association is disadvantageous or ... as a continuum of interaction ranging from parasitism to mutualism. In fact, the direction of a ... occurs. See also Commensalism parasitism Mutualism List of symbiotic ...
Parasitism in Biological Dictionary

Parasitism

... parasitism is a type of symbiotic relationship between two ... parasites are much smaller than ... parasitism n. The characteristic behavior or mode of ... or parasitic population ... examples of parasitism include interactions between ... ...

Commensalism

... two other types of association: mutualism and parasitism . Commensalism is a relationship between ... commensalism cannot be distinguished from parasitism (see parasite) ... More on commensalism from ... one species benefits, the other is unaffected. parasitism ... Commensalism . Mutualism. Neutralism. ...

Parasite

... parasitism is a type of symbiotic relationship between two different organisms where ... in a different organism while contributing nothing to the survival of parasitism n. The characteristic behavior or mode of existence of a parasite or ...

Parasites

... parasitism is a type of symbiotic relationship between two different organisms where one organism, the parasite, takes favor from the host, sometimes for a ...

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