نتایج جستجو برای: parasite diversity

تعداد نتایج: 225774  

Journal: :Biochimica et Biophysica Acta (BBA) - Bioenergetics 2013

2015
Serge Morand

The present review summarized the factors or determinants that may explain parasite diversity among host species and the consequences of this parasite diversity on the evolution of host-life history traits. As host-parasite interactions are asymmetrical exploited-exploiter relationships, ecological and epidemiological theories produce hypotheses to find the potential determinants of parasite sp...

Journal: :Evolution; international journal of organic evolution 2015
Shan Huang John M Drake John L Gittleman Sonia Altizer

Evolutionarily distinctive host lineages might harbor fewer parasite species because they have fewer opportunities for parasite sharing than hosts having extant close relatives, or because diverse parasite assemblages promote host diversification. We evaluate these hypotheses using data from 930 species of parasites reported to infect free-living carnivores. We applied nonparametric richness es...

2014
Chaturong Putaporntip Jun Miao Napaporn Kuamsab Jetsumon Sattabongkot Jeeraphat Sirichaisinthop Somchai Jongwutiwes Liwang Cui

BACKGROUND Malaria control efforts have a significant impact on the epidemiology and parasite population dynamics. In countries aiming for malaria elimination, malaria transmission may be restricted to limited transmission hot spots, where parasite populations may be isolated from each other and experience different selection forces. Here we aim to examine the Plasmodium vivax population diverg...

2018
Maan Zrein Elodie Granjon Lucie Gueyffier Julie Caillaudeau Peter Liehl Hans Pottel Clareci Silva Cardoso Claudia Di Lorenzo Oliveira Lea Campos de Oliveira Tzong-Hae Lee Ariela Mota Ferreira Antonio Luiz P Ribeiro Michael P Busch Ester Cerdeira Sabino

BACKGROUND Trypanosoma cruzi parasite, the causative agent of Chagas disease, infects about six million individuals in more than 20 countries. Monitoring parasite persistence in infected individuals is of utmost importance to develop and evaluate treatments to control the disease. Routine screening for infected human individuals is achieved by serological assays; PCR testing to monitor spontane...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Pieter T J Johnson Daniel L Preston Jason T Hoverman Bryan E LaFonte

Host-parasite interactions are embedded within complex communities composed of multiple host species and a cryptic assemblage of other parasites. To date, however, surprisingly few studies have explored the joint effects of host and parasite richness on disease risk, despite growing interest in the diversity-disease relationship. Here, we combined field surveys and mechanistic experiments to te...

Journal: :Proceedings. Biological sciences 2008
Ryan F Hechinger Kevin D Lafferty Armand M Kuris

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...

2015
Karla Magalhães Campião Augusto Cesar de Aquino Ribas Drausio Honorio Morais Reinaldo José da Silva Luiz Eduardo Roland Tavares Stefan Lötters

There is an increasing interest in unveiling the dynamics of parasite infection. Understanding the interaction patterns, and determinants of host-parasite association contributes to filling knowledge gaps in both community and disease ecology. Despite being targeted as a relevant group for conservation efforts, determinants of the association of amphibians and their parasites in broad scales ar...

Journal: :Evolution; international journal of organic evolution 1993
Steven A Frank

Hosts and parasites often have extensive genetic diversity for resistance and virulence (host range). Qualitative diversity occurs when the success of attack is an all-or-nothing response that varies according to the genotypes of the host and parasite. Quantitative diversity occurs when the success of attack is a graded response that depends on additive genetic variation in the host and parasit...

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