21 papers · ranked by Valyu relevance
Gustavo Fabián Enriquez, Jacqueline Bua, María Marcela Orozco, Natalia Paula Macchiaverna + 5 more
'Natalia Paula Macchiaverna' 'Julián Antonio Alvarado Otegui' 'Hernán Darío Argibay' 'María del Pilar Fernández' 'Ricardo Esteban Gürtler' 'Marta Victoria Cardinal'] Background The distribution of parasite load across hosts may modify the transmission dynamics of infectious diseases. Chagas disease is caused by a…
Joëlle Guitard, Emmanuelle Chrétien, Jérémy De Bonville, Dominique G. Roche + 2 more
Wild animals have parasites that can compromise their physiological and/or behavioural performance. Yet, the extent to which parasite load is related to intraspecific variation in performance traits within wild populations remains relatively unexplored. We used pumpkinseed sunfish (Lepomis gibbosus) and their…
Bradley A. Mullens, Katherine A. Luhring
Heleidomermis magnapapula parasitizes the blood-feeding midge Culicoides sonorensis. Most (84%) single mermithid infective second stage juveniles (J2) developed into adult females, while parasitism by multiple J2 yielded 97% male adults. Nematodes emerged from the midge larval host as adults and mated immediately…
Tom Sistermans, Juliane Hartke, Marah Stoldt, Romain Libbrecht + 1 more
Parasites with complex life cycles are known to induce phenotypic changes in their intermediate hosts to increase transmission to the final host. The magnitude of these changes could increase with the number of parasites, which would be beneficial to co-infecting parasites. Yet, adverse effects of high parasite load…
Krista Mapagha-Boundoukou, Larson Boundenga, Mohamed H. Mohamed-Djawad, Neil M. Longo-Pendy + 3 more
Gastrointestinal parasites represent a major constraint on the health and productivity of small ruminants worldwide. In Gabon, and particularly in Franceville, data regarding parasite diversity, prevalence, and associated risk factors remain scarce. Understanding these aspects is crucial to develop effective, targeted…
Brooke E. White, Carolyn L. Hodo, Sarah A. Hamer, Ashley B. Saunders + 3 more
Infection with the protozoan parasite Trypanosoma cruzi is generally well-controlled by host immune responses, but appears to be rarely eliminated. The resulting persistent, low-level infection results in cumulative tissue damage with the greatest impact generally in the heart in the form of chagasic cardiomyopathy.…
Liam R Dougherty, Faith Rovenolt, Alexia Luyet, Jukka Jokela + 1 more
'Jessica F Stephenson'] Title: Abstract Choosing to mate with an infected partner has several potential fitness costs, including disease transmission and infection-induced reductions in fecundity and parental care. By instead choosing a mate with no, or few, parasites, animals avoid these costs and may also obtain…
McVinish, R.
In Isham's model of host-macroparasite interaction, parasite-induced host mortality increases parasite aggregation in the sense of the Lorenz order and related measures when the distribution of the number of parasites entering the host at infectious contacts is log-concave. Furthermore, in the presence of…
Romain Pigeault, Camille-Sophie Cozzarolo, Jérôme Wassef, Jérémy Gremion + 3 more
Although avian haemosporidian parasites are widely used as model organisms to study fundamental questions in evolutionary and behavorial ecology of host-parasite interactions, some of their basic characteristics, such as seasonal variations in within-host density, are still mostly unknown. In addition, their interplay…
Li-Qing Wang, Zhi-Tao Liu, Jian-Jun Wang, Yu-Han Fang + 4 more
Background The immunocompetence handicap hypothesis suggests that males with a higher testosterone level should be better at developing male secondary traits, but at a cost of suppressed immune performance. As a result, we should expect that males with an increased testosterone level also possess a higher parasite…
Claudia Patricia Rico-Torres, Luis Fernando Valenzuela-Moreno, Elvira Robles-González, Alvar Alonzo Cruz-Tamayo + 9 more
Eleven stray dogs were captured, all of which were adults (>1 year old). Their body condition ranged from severe to slightly underweight; externally, most of the stray dogs had skin diseases (scabies) and other ectoparasite infestations (fleas and ticks not identified) of varying degrees. No lesions compatible with…
Gonzalo Maximiliano Lopez, Juan Pablo Aparicio
The basic models are derived from general probabilistic models for the parasite density-dependent mating probability. Here we considered the particular, and common case, of a negative binomial distribution for the number of parasites in hosts. We find the basic reproductive number and we show that the system exhibit a…
Gonzalo Maximiliano Lopez, Juan Pablo Aparicio
| 1 | | Introduction | 2 | | --- | --- | --- | --- | | 2 | | Distribution of parasites by sex | 3 | | 3 | | Mating probability | 4 | | | 3.1 | Mean number of fertilized female parasites | 4 | | | 3.2 | Mating probability | 4 | | 4 | | Mating probability and density-dependent fecundity | 5 | | | 4.1 | Density-dependent…
Gonzalo Maximiliano Lopez, Juan Pablo Aparicio
While previous studies have commonly assumed Poisson and negative binomial distributions to describe the distribution of parasites among hosts, this study adopts an arbitrary distribution model and examines its consequences on some reproductive variables. These variables include mean number of fertile females, mean egg…
Usman Sanusi, Sona John, Johannes Mueller, Aurélien Tellier
Mathematical modelling of epidemiological and coevolutionary dynamics is widely being used to improve disease management strategies of infectious diseases. Many diseases present some form of intra-host quiescent stage, also known as covert infection, while others exhibit dormant stages in the environment. As…
Rafiatu Imoro, Maica Krizna Gavina, Vachel Gay Paller, Jomar Rabajante + 2 more
'Jomar Rabajante' 'Mark Jayson Cortez' 'Editha Jose'] - Developed a mathematical model to show the dynamics of STH transmission with human-animal-environment interactions - Ingestion rate, disease progression rate, and shedding rate, increase infection while higher clearance and recovery rates decrease infection - The…
R. McVinish
acquisition Authors: ['R. McVinish'] Abstract. The Tallis-Leyton model is a simple model of parasite acquisition where there is no interaction between the host and the acquired parasites. We examine the effect of model parameters on the distribution of the host's parasite burden in the sense of the Lorenz order. This…
Oksana Desiatkina, Martin Mösching, Nicoleta Anghel, Ghalia Boubaker + 4 more
Aiming to generate novel compounds with improved antitoxoplama activity by exploiting the parasite auxotrophies, a library of nucleic base-tethered trithiolato-bridged dinuclear ruthenium(II)-arene conjugates - was synthesized and evaluated. Various structural features as the nucleobase (adenine, uracil, cytosine…
Authors not listed
Trypanosomiasis is one of the World’s Neglected Tropical Diseases (NTDs) that affects both man and animals. The current control measures are mostly chemotherapeutic which face numerous challenges such as non availability of drugs, toxicity and long term protocol. These challenges have made researchers look for…
Authors not listed
Neglected tropical diseases caused by trypanosomatid parasites such as Leishmania, Trypanosoma brucei and Trypanosoma cruzi present a major public healthcare issue due in part to emerging resistance. Exploring multiple targeting ligands, conjugates composed of analogs from the ribosomal inhibitor anisomycin and…
Authors not listed
In this study, we investigated the antiplasmodial properties of a series of fluorinated peptoid-capped histone deacetylase inhibitors (HDACi) against asexual blood stages of the drug-sensitive 3D7 and drug-resistant Dd2 strains of Plasmodium falciparum, as well as the exo-erythrocytic liver stages and mature…