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Lim HC, Lambrecht D, Forkner RE, Roulston T. Minimal Sharing of Nosematid and Trypanosomatid Parasites between Honey Bees and Other Bees, but Extensive Sharing of Crithidia between Bumble and Mason Bees. J Invertebr Pathol 2023; 198:107933. [PMID: 37169330 DOI: 10.1016/j.jip.2023.107933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/25/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023]
Abstract
We document gut parasites in co-occurring Apis, Bombus, and Osmia spp. in the Northern Virginia region, USA. Trypanosomatidea occurred in sixty percent of specimens and 13% carried Nosematidae. We found strong host partitioning: Lotmaria passim and Vairimorpha (Nosema) ceranae predominated in Apis, and Crithidia bombi and V. bombi in Bombus. We did not detect pathogen spread from Apis to Bombus but did detect sharing of C. bombi between Bombus and Osmia, higher parasite levels in Apis at sites with apiaries, and clustering of Vairimopha infection. Given the presence of C. bombi in Osmia, we suggest disease sharing across taxa be monitored.
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Affiliation(s)
- Haw Chuan Lim
- Department of Biology, George Mason University, Fairfax, Virginia, USA; Center for Conservation Genomics, Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C., USA.
| | - David Lambrecht
- Department of Biology, George Mason University, Fairfax, Virginia, USA
| | - Rebecca E Forkner
- Department of Biology, George Mason University, Fairfax, Virginia, USA
| | - T'ai Roulston
- Department of Environmental Sciences, University of Virginia, Charlottesville, Virginia, USA
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2
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Aguiar de Souza Penha V, Maia Chaves Bicalho Domingos F, Fecchio A, Bell JA, Weckstein JD, Ricklefs RE, Braga EM, de Abreu Moreira P, Soares L, Latta S, Tolesano-Pascoli G, Alquezar RD, Del-Claro K, Manica LT. Haemosporidian parasites and incubation period influence plumage coloration in tanagers (Passeriformes: Thraupidae). Proc Biol Sci 2022; 289:20221283. [PMID: 36416043 PMCID: PMC9682435 DOI: 10.1098/rspb.2022.1283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/27/2022] [Indexed: 11/24/2022] Open
Abstract
Birds are highly visually oriented and use plumage coloration as an important signalling trait in social communication. Hence, males and females may have different patterns of plumage coloration, a phenomenon known as sexual dichromatism. Because males tend to have more complex plumages, sexual dichromatism is usually attributed to female choice. However, plumage coloration is partly condition-dependent; therefore, other selective pressures affecting individuals' success may also drive the evolution of this trait. Here, we used tanagers as model organisms to study the relationships between dichromatism and plumage coloration complexity in tanagers with parasitism by haemosporidians, investment in reproduction and life-history traits. We screened blood samples from 2849 individual birds belonging to 52 tanager species to detect haemosporidian parasites. We used publicly available data for plumage coloration, bird phylogeny and life-history traits to run phylogenetic generalized least-square models of plumage dichromatism and complexity in male and female tanagers. We found that plumage dichromatism was more pronounced in bird species with a higher prevalence of haemosporidian parasites. Lastly, high plumage coloration complexity in female tanagers was associated with a longer incubation period. Our results indicate an association between haemosporidian parasites and plumage coloration suggesting that parasites impact mechanisms of sexual selection, increasing differences between the sexes, and social (non-sexual) selection, driving females to develop more complex coloration.
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Affiliation(s)
| | | | - Alan Fecchio
- Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), CONICET—Universidad Nacional de la Patagonia San Juan Bosco, U9200, Esquel, Chubut, Argentina
| | - Jeffrey A. Bell
- Department of Biology, University of North Dakota, 58202-9019, Grand Forks, USA
| | - Jason D. Weckstein
- Academy of Natural Sciences of Drexel University and Department of Biodiversity, Earth, and Environmental Science, Drexel University, 19104, Philadelphia, PA, USA
| | - Robert E. Ricklefs
- Department of Biology, University of Missouri—Saint Louis, Saint Louis, MO, USA
| | - Erika Martins Braga
- Department of Parasitology, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | | | - Letícia Soares
- Research Associate, National Aviary, Pittsburgh, PA, USA
| | - Steven Latta
- Conservation and Field Research, National Aviary, 15212, Pittsburgh, PA, USA
| | - Graziela Tolesano-Pascoli
- Zoology Department, Institute of Biological Sciences, University of Brasilia, 70910-900, Brasilia, Distrito Federal, Brazil
| | - Renata Duarte Alquezar
- Animal Behavior Laboratory, Graduate Program in Ecology, University of Brasilia, 70910-900, Brasilia, Distrito Federal, Brazil
| | - Kleber Del-Claro
- Behavioral Ecology and Interactions Laboratory, Graduate Program in Ecology and Conservation of Natural Resources, Federal University of Uberlândia, 38405-240, Uberlândia, Minas Gerais, Brazil
| | - Lilian Tonelli Manica
- Zoology Department, Federal University of Paraná, 81531-980, Curitiba, Paraná, Brazil
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3
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Pibaque P, Piedrahita P. First Report of Blood Parasites in Black-Capped Sparrow (Arremon abeillei) from Neotropical Dry Deciduous Forest. J Wildl Dis 2022; 58:892-6. [PMID: 35951027 DOI: 10.7589/JWD-D-21-00200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/26/2022] [Indexed: 12/04/2022]
Abstract
Avian haemosporidian parasites (Order: Haemosporida) are a diverse group of microorganisms that spend part of their life cycle in the erythrocytes of avian hosts. Parasite presence has been confirmed in all Ecuadorian regions, but some ecosystems, such as the deciduous dry forest of the Coastal region, have not been evaluated for parasite presence. Data on presence or absence, and prevalence, of haemosporidian blood parasites were obtained from avian blood samples collected in two different dry deciduous forests in Guayaquil, Ecuador: Bosque Protector Prosperina and Área Nacional de Recreación Parque Lago. Mist netting was performed between December 2018 and September 2019; blood smears were prepared from blood taken from 35 individuals of 20 bird species and all samples were analyzed by optical microscope observation. Most species showed no evidence of parasite infection, but haemosporidia were found on a blood smear obtained from a Black-capped Sparrow, Arremon abeillei (Passerelleidae), confirming this species as a newly discovered host of blood parasites.
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4
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Euclydes L, De La Torre GM, Dudczak AC, Melo FTDV, Campião KM. Ecological specificity explains infection parameters of anuran parasites at different scales. Parasitology 2022:1-8. [PMID: 35195062 DOI: 10.1017/s0031182022000087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Understanding the determinants of parasite infection in different hosts is one of the main goals of disease ecology. Evaluating the relationship between parasite–host specificity and infection parameters within host communities and populations may contribute to this understanding. Here we propose two measures of specificity that encompasses phylogenetic and ecological relatedness among hosts and investigated how such metrics explain parasite infection prevalence and mean infection intensity (MII). We analysed the parasites associated with an anuran community in an area of Atlantic Forest and used the number of infected hosts and the net relatedness index to calculate the phylogenetic and ecological specificities of the parasites. These specificity measures were related to infection metrics (prevalence and MII) with generalized linear mixed models at community (all hosts) and population (infected host species) scales. Parasite prevalence was correlated with the number of infected hosts and, when considering only multi-host parasites, was positively related to parasite ecological specificity at community and population scales. Thus, parasite species have similar prevalences in ecologically closer hosts. No relationship was found for parasite MII. Incorporating ecological characteristics of hosts in parasite specificity analyses improves the detection of patterns of specificity across scales.
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Affiliation(s)
- Lorena Euclydes
- Department of Zoology, Faculty of Biological Sciences, Federal University of Paraná, Curitiba, Paraná81531-980, Brazil
| | - Gabriel M De La Torre
- Department of Zoology, Faculty of Biological Sciences, Federal University of Paraná, Curitiba, Paraná81531-980, Brazil
| | - Amanda Caroline Dudczak
- Department of Zoology, Faculty of Biological Sciences, Federal University of Paraná, Curitiba, Paraná81531-980, Brazil
| | - Francisco Tiago de Vasconcelos Melo
- Laboratory of Cell Biology and Helminthology 'Prof. Dr. Reinalda Marisa Lanfredi', Institute of Biological Sciences, Federal University of Pará, Belém, Pará66075-110, Brazil
| | - Karla Magalhães Campião
- Department of Zoology, Faculty of Biological Sciences, Federal University of Paraná, Curitiba, Paraná81531-980, Brazil
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5
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Amoah B, McCann RS, Kabaghe AN, Mburu M, Chipeta MG, Moraga P, Gowelo S, Tizifa T, van den Berg H, Mzilahowa T, Takken W, van Vugt M, Phiri KS, Diggle PJ, Terlouw DJ, Giorgi E. Identifying Plasmodium falciparum transmission patterns through parasite prevalence and entomological inoculation rate. eLife 2021; 10:65682. [PMID: 34672946 PMCID: PMC8530514 DOI: 10.7554/elife.65682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 09/30/2021] [Indexed: 11/13/2022] Open
Abstract
Background Monitoring malaria transmission is a critical component of efforts to achieve targets for elimination and eradication. Two commonly monitored metrics of transmission intensity are parasite prevalence (PR) and the entomological inoculation rate (EIR). Comparing the spatial and temporal variations in the PR and EIR of a given geographical region and modelling the relationship between the two metrics may provide a fuller picture of the malaria epidemiology of the region to inform control activities. Methods Using geostatistical methods, we compare the spatial and temporal patterns of Plasmodium falciparum EIR and PR using data collected over 38 months in a rural area of Malawi. We then quantify the relationship between EIR and PR by using empirical and mechanistic statistical models. Results Hotspots identified through the EIR and PR partly overlapped during high transmission seasons but not during low transmission seasons. The estimated relationship showed a 1-month delayed effect of EIR on PR such that at lower levels of EIR, increases in EIR are associated with rapid rise in PR, whereas at higher levels of EIR, changes in EIR do not translate into notable changes in PR. Conclusions Our study emphasises the need for integrated malaria control strategies that combine vector and human host managements monitored by both entomological and parasitaemia indices. Funding This work was supported by Stichting Dioraphte grant number 13050800.
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Affiliation(s)
- Benjamin Amoah
- Centre for Health Informatics, Computing, and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - Robert S McCann
- Laboratory of Entomology, Wageningen University and Research, Wageningen, Netherlands.,Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, United States
| | - Alinune N Kabaghe
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | - Monicah Mburu
- Laboratory of Entomology, Wageningen University and Research, Wageningen, Netherlands.,Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Michael G Chipeta
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Malawi-Liverpool Wellcome Trust Research Programme, Blantyre, Malawi.,Big Data Institute, University of Oxford, Oxford, United Kingdom
| | - Paula Moraga
- Centre for Health Informatics, Computing, and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, United Kingdom.,Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Steven Gowelo
- Laboratory of Entomology, Wageningen University and Research, Wageningen, Netherlands.,Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Tinashe Tizifa
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | - Henk van den Berg
- Laboratory of Entomology, Wageningen University and Research, Wageningen, Netherlands
| | - Themba Mzilahowa
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Willem Takken
- Laboratory of Entomology, Wageningen University and Research, Wageningen, Netherlands
| | - Michele van Vugt
- Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | - Kamija S Phiri
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Peter J Diggle
- Centre for Health Informatics, Computing, and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - Dianne J Terlouw
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Malawi-Liverpool Wellcome Trust Research Programme, Blantyre, Malawi.,Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Emanuele Giorgi
- Centre for Health Informatics, Computing, and Statistics (CHICAS), Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
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6
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Henry MA, Kokou F, Palenzuela O, Pyrenis G, Rigos G. Experimental infection model with the bivalvulid Enteromyxum leei (Myxidiidae) in the sharpsnout seabream, Diplodus puntazzo (Sparidae), and evaluation of the antiparasitic efficacy of a functional diet. Folia Parasitol (Praha) 2020; 67. [PMID: 33021202 DOI: 10.14411/fp.2020.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 06/04/2020] [Indexed: 11/19/2022]
Abstract
An infection model for sharpsnout seabream Diplodus puntazzo (Walbaum) challenged with the myxosporean Enteromyxum leei (Diamant, Lom et Dyková, 1994), resembling the natural infection conditions, was used to evaluate the antiparasitic efficacy of a functional diet. Fish of an average weight of 12.5 ± 1.2 g were delivered either a functional (included as feed supplement at 0.3% levels) or a control extruded diet. After four weeks of administration of the experimental diets, fish were challenged with the parasites (cohabitation with infected donors; donor: recipient ratio 1 : 1). The experiment was terminated four weeks after the start of the challenge. At the end of the experiment, growth and feeding (specific growth rate and feed efficiency), as well as immunological parameters (respiratory burst activity, antibacterial activities, hemoglobin concentration, anti-protease activity and ceruloplasmin activity) were measured along with cumulative mortality and total parasitic count in the gut. No significant difference was evident with regard to growth and feeding performance, mortality, gut parasitic load or immunological parameters as the parasitical challenge significantly affected both the performance of the control and functional diet fed fish. However, there was a less prominent impact on antibacterial, anti-protease and ceruloplasmin activity in fish fed with the functional diet. Overall, the present study validated the experimental cohabitation infection model and evaluated the efficacy of a functional ingredient as an antiparasitic agent, showing some potential effects on the fish immune response.
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Affiliation(s)
- Morgane A Henry
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Anavissos, Attiki, Greece
| | - Fotini Kokou
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Anavissos, Attiki, Greece.,Aquaculture and Fisheries Group, Wageningen Institute of Animal Sciences, Wageningen University, Wageningen, The Netherlands
| | | | - George Pyrenis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Anavissos, Attiki, Greece
| | - George Rigos
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Anavissos, Attiki, Greece
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7
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Tustin AW, Castillo-Neyra R, Tamayo LD, Salazar R, Borini-Mayorí K, Levy MZ. Elucidating the Mechanism of Trypanosoma cruzi Acquisition by Triatomine Insects: Evidence from a Large Field Survey of Triatoma infestans. Trop Med Infect Dis 2020; 5:E87. [PMID: 32492771 DOI: 10.3390/tropicalmed5020087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/21/2020] [Accepted: 05/26/2020] [Indexed: 12/01/2022] Open
Abstract
Blood-sucking triatomine bugs transmit the protozoan parasite Trypanosoma cruzi, the etiologic agent of Chagas disease. We measured the prevalence of T. cruzi infection in 58,519 Triatoma infestans captured in residences in and near Arequipa, Peru. Among bugs from infected colonies, T. cruzi prevalence increased with stage from 12% in second instars to 36% in adults. Regression models demonstrated that the probability of parasite acquisition was roughly the same for each developmental stage. Prevalence increased by 5.9% with each additional stage. We postulate that the probability of acquiring the parasite may be related to the number of feeding events. Transmission of the parasite does not appear to be correlated with the amount of blood ingested during feeding. Similarly, other hypothesized transmission routes such as coprophagy fail to explain the observed pattern of prevalence. Our results could have implications for the feasibility of late-acting control strategies that preferentially kill older insects.
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8
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Kaur R, Stoldt M, Jongepier E, Feldmeyer B, Menzel F, Bornberg-Bauer E, Foitzik S. Ant behaviour and brain gene expression of defending hosts depend on the ecological success of the intruding social parasite. Philos Trans R Soc Lond B Biol Sci 2020; 374:20180192. [PMID: 30967075 DOI: 10.1098/rstb.2018.0192] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The geographical mosaic theory of coevolution predicts that species interactions vary between locales. Depending on who leads the coevolutionary arms race, the effectivity of parasite attack or host defence strategies will explain parasite prevalence. Here, we compare behaviour and brain transcriptomes of Temnothorax longispinosus ant workers when defending their nest against an invading social parasite, the slavemaking ant Temnothorax americanus. A full-factorial design allowed us to test whether behaviour and gene expression are linked to parasite pressure on host populations or to the ecological success of parasite populations. Albeit host defences had been shown before to covary with local parasite pressure, we found parasite success to be much more important. Our chemical and behavioural analyses revealed that parasites from high prevalence sites carry lower concentrations of recognition cues and are less often attacked by hosts. This link was further supported by gene expression analysis. Our study reveals that host-parasite interactions are strongly influenced by social parasite strategies, so that variation in parasite prevalence is determined by parasite traits rather than the efficacy of host defence. Gene functions associated with parasite success indicated strong neuronal responses in hosts, including long-term changes in gene regulation, indicating an enduring impact of parasites on host behaviour. This article is part of the theme issue 'The coevolutionary biology of brood parasitism: from mechanism to pattern'.
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Affiliation(s)
- Rajbir Kaur
- 1 Institute of Organismic and Molecular Evolution, Johannes Gutenberg University , Mainz , Germany
| | - Marah Stoldt
- 1 Institute of Organismic and Molecular Evolution, Johannes Gutenberg University , Mainz , Germany
| | - Evelien Jongepier
- 2 Molecular Evolution and Bioinformatics Group, Institute for Evolution and Biodiversity, Westfälische Wilhelms-Universität , Münster , Germany
| | - Barbara Feldmeyer
- 3 Senckenberg Biodiversity and Climate Research Centre, Senckenberg Gesellschaft für Naturforschung , Senckenberganlage 25, 60325 Frankfurt am Main , Germany
| | - Florian Menzel
- 1 Institute of Organismic and Molecular Evolution, Johannes Gutenberg University , Mainz , Germany
| | - Erich Bornberg-Bauer
- 2 Molecular Evolution and Bioinformatics Group, Institute for Evolution and Biodiversity, Westfälische Wilhelms-Universität , Münster , Germany
| | - Susanne Foitzik
- 1 Institute of Organismic and Molecular Evolution, Johannes Gutenberg University , Mainz , Germany
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9
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Narr CF, Ebert D, Bastille-Rousseau G, Frost PC. Nutrient availability affects the prevalence of a microsporidian parasite. J Anim Ecol 2019; 88:579-590. [PMID: 30636044 DOI: 10.1111/1365-2656.12945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/12/2018] [Indexed: 11/29/2022]
Abstract
Defining the relationship between nutrients and parasitism is complicated by shifts in host physiology and population density, which can both mediate the effects of host diet on parasites and vice versa. We examined the relationship between nutrient availability and an abundant parasite capable of both horizontal and vertical transmission (Hamiltosporidium tvaerminnensis) of a planktonic crustacean, Daphnia magna, in rock pools on Baltic Sea Skerry islands. We found that the relative availability of nutrients directly affected infection prevalence; parasite prevalence was higher in pools with higher particulate N:P ratios. Infection prevalence was not related to Daphnia population densities. A complementary experiment that examined host responses to an N:P gradient in mesocosms indicated that high N:P ratios can increase spore load in the hosts. We surmise that high N:P food increases Daphnia feeding rate, which increases their contact with parasite spores and leads to higher prevalence and more intense infections. We found no direct evidence that parasite-induced changes in host nutrient use affected nutrient dynamics in pools. However, the relationship between diet N:P and the parasite's prevalence and load is consistent with previously documented patterns of this parasite's effect on host nutrient use. Taken together, this study suggests that high N:P ratios in food may benefit the parasite in multiple ways and could create environments that favour horizontal transmission over vertical transmission for parasites capable of both transmission routes. If so, nutrient limitation could have long-term consequences for host-parasite evolution.
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Affiliation(s)
- Charlotte F Narr
- Environmental and Life Sciences, Trent University, Peterborough, Ontario, Canada
| | - Dieter Ebert
- Zoological Institute, Basel University, Basel, Switzerland
| | | | - Paul C Frost
- Department of Biology, Trent University, Peterborough, Ontario, Canada
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10
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Barry J, Newton M, Dodd JA, Evans D, Newton J, Adams CE. The effect of foraging and ontogeny on the prevalence and intensity of the invasive parasite Anguillicola crassus in the European eel Anguilla anguilla. J Fish Dis 2017; 40:1213-1222. [PMID: 28084623 DOI: 10.1111/jfd.12596] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 11/10/2016] [Accepted: 11/10/2016] [Indexed: 06/06/2023]
Abstract
Infection patterns of the invasive Anguillicola crassus nematode were investigated in a population of the European eel Anguilla anguilla where parasite invasion is very recent, Loch Lomond, Scotland. Intensity levels of the parasite were associated with differences in fish ontogeny and trophic ecology. Although eels foraged on both fish and invertebrates, individuals which were smaller and fed on invertebrates (>70% contribution to diet) were found to contain a greater number of swim bladder parasites compared to larger eel with a predominance of fish (>60% contribution) in their diet. Within affected fish, a significant negative relationship was found between fish length and parasite intensity, with smaller individuals having higher parasite intensity than larger individuals. This study indicates that food intake and infection risk are linked in this recently infected host-parasite system. From a management perspective increasing our understanding of how infection intensity and repeated exposure is linked to resource use in an ecosystem is important for the future management of this endangered species in Europe.
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Affiliation(s)
- J Barry
- Scottish Centre for Ecology & the Natural Environment, IBAHCM, University of Glasgow, Glasgow, UK
| | - M Newton
- Scottish Centre for Ecology & the Natural Environment, IBAHCM, University of Glasgow, Glasgow, UK
| | - J A Dodd
- Scottish Centre for Ecology & the Natural Environment, IBAHCM, University of Glasgow, Glasgow, UK
| | - D Evans
- Agri-Food and Biosciences Institute, Belfast, Antrim, UK
| | - J Newton
- NERC Life Sciences Mass Spectrometry Facility, SUERC, East Kilbride, Glasgow, UK
| | - C E Adams
- Scottish Centre for Ecology & the Natural Environment, IBAHCM, University of Glasgow, Glasgow, UK
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11
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Sheath DJ, Andreou D, Britton JR. Interactions of warming and exposure affect susceptibility to parasite infection in a temperate fish species. Parasitology 2016; 143:1340-6. [PMID: 27225942 DOI: 10.1017/S0031182016000846] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Predicting how elevated temperatures from climate change alter host-parasite interactions requires understandings of how warming affects host susceptibility and parasite virulence. Here, the effect of elevated water temperature and parasite exposure level was tested on parasite prevalence, abundance and burden, and on fish growth, using Pomphorhynchus laevis and its fish host Squalius cephalus. At 60 days post-exposure, prevalence was higher at the elevated temperature (22 °C) than ambient temperature (18 °C), with infections achieved at considerably lower levels of exposure. Whilst parasite number was significantly higher in infected fish at 22 °C, both mean parasite weight and parasite burden was significantly higher at 18 °C. There were, however, no significant relationships between fish growth rate and temperature, parasite exposure, and the infection parameters. Thus, whilst elevated temperature significantly influenced parasite infection rates, it also impacted parasite development rates, suggesting warming could have complex implications for parasite dynamics and host resistance.
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12
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Jongepier E, Kleeberg I, Foitzik S. The ecological success of a social parasite increases with manipulation of collective host behaviour. J Evol Biol 2015; 28:2152-62. [PMID: 26299653 DOI: 10.1111/jeb.12738] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 08/18/2015] [Indexed: 11/27/2022]
Abstract
Many parasites alter the behaviour of their host to their own advantage, yet hosts often vary in their susceptibility to manipulation. The ecological and evolutionary implications of such variation can be profound, as resistant host populations may suffer lower parasite pressures than those susceptible to manipulation. To test this prediction, we assessed parasite-induced aggressive behaviours across 16 populations of two Temnothorax ant species, many of which harbour the slavemaker ant Protomognathus americanus. This social parasite uses its Dufour's gland secretions to manipulate its hosts into attacking nestmates, which may deter defenders away from itself during invasion. We indeed find that colonies that were manipulated into attacking their Dufour-treated nestmates were less aggressive towards the slavemaker than those that did not show slavemaker-induced nestmate attack. Slavemakers benefited from altering their hosts' aggression, as both the likelihood that slavemakers survived host encounters and slavemaker prevalence in ant communities increased with slavemaker-induced nestmate attack. Finally, we show that Temnothorax longispinosus colonies were more susceptible to manipulation than Temnothorax curvispinosus colonies. This explains why T. curvispinosus colonies responded with more aggression towards invading slavemakers, why they were less likely to let slavemakers escape and why they were less frequently parasitized by the slavemaker than T. longispinosus. Our findings highlight that large-scale geographic variation in resistance to manipulation can have important implications for the prevalence and host preference of parasites.
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Affiliation(s)
- E Jongepier
- Evolutionary Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - I Kleeberg
- Evolutionary Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - S Foitzik
- Evolutionary Biology, Johannes Gutenberg University Mainz, Mainz, Germany
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Bassandja JO, Agasa SB, Likwela JL. [Prevalence of asymptomatic carriage of Plasmodium in volunteer blood donors in Kisangani, Democratic Republic of Congo]. Pan Afr Med J 2014; 17:320. [PMID: 25328616 PMCID: PMC4198284 DOI: 10.11604/pamj.2014.17.320.3778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 04/22/2014] [Indexed: 11/11/2022] Open
Affiliation(s)
- Jacques Ossinga Bassandja
- Département de Médecine Interne, Faculté de Médecine et de Pharmacie, Université de Kisangani, Kisangani, République Démocratie du Congo
| | - Salomon Batina Agasa
- Département de Médecine Interne, Faculté de Médecine et de Pharmacie, Université de Kisangani, Kisangani, République Démocratie du Congo
| | - Joris Losimba Likwela
- Département de Santé Publique, Faculté de Médecine et de Pharmacie, Université de Kisangani, Kisangani, République Démocratie du Congo
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Hoben AD, Buunk AP, Fincher CL, Thornhill R, Schaller M. On the adaptive origins and maladaptive consequences of human inbreeding: parasite prevalence, immune functioning, and consanguineous marriage. Evol Psychol 2010; 8:658-76. [PMID: 22947825 PMCID: PMC10480803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Accepted: 11/03/2010] [Indexed: 06/01/2023] Open
Abstract
We propose that consanguineous marriages arise adaptively in response to high parasite prevalence and function to maintain coadapted gene complexes and associated local adaptation that defend against local pathogens. Therefore, a greater prevalence of inbreeding by consanguineous marriage is expected in geographical regions that historically have had high levels of disease-causing parasites. Eventually such marriages may, under the contemporary high movement of people with modern transportation, jeopardize the immunity of those who practice inbreeding as this leads to an increased susceptibility to novel pathogens. Therefore, a greater frequency of inbreeding is expected to predict higher levels of contemporary mortality and morbidity from infectious diseases. This parasite model of human inbreeding was supported by an analysis involving 72 countries worldwide. We found that historically high levels of pathogen prevalence were related positively to the proportion of consanguineous marriages, and that a higher prevalence of such marriages was associated with higher contemporary mortality and morbidity due to pathogens. Our study addresses plausible alternative explanations. The results suggest that consanguineous marriage is an adaptive consequence of historical pathogen ecologies, but is maladaptive in contemporary disease ecologies.
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Affiliation(s)
- Ashley D Hoben
- Department of Psychology, University of Groningen, Groningen, The Netherlands.
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