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Mooring MS. Programmed Grooming after 30 Years of Study: A Review of Evidence and Future Prospects. Animals (Basel) 2024; 14:1266. [PMID: 38731268 PMCID: PMC11083713 DOI: 10.3390/ani14091266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/16/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
In 1992, an evolutionary model for the endogenous regulation of parasite-defense grooming was first proposed for African antelope by Ben and Lynette Hart. Known as the programmed grooming model, it hypothesized that a central control mechanism periodically evokes grooming so as to remove ectoparasites before they blood feed. The programmed grooming model contrasts with a stimulus-driven mechanism, in which grooming is stimulated by direct peripheral irritation from ectoparasite bites. In the 30+ years since the seminal 1992 paper, 26 studies have provided robust support for the programmed grooming model in ungulate hosts and ticks. In addition, multiple studies from unaffiliated investigators have evaluated the predictions of the model in different host systems (including rodents and primates) and in a variety of other ectoparasites (fleas, lice, and keds). I conducted a tricennial review of these studies to assess the current evidence and arrived at the following three conclusions: (1) tests of the programmed grooming predictions should use a similar methodology to the well-established protocol, so that the results are comparable and can be properly assessed; (2) the predictions used to test the model should be tailored to the biology of the host taxa under investigation; and (3) the predictions should likewise be tailored to the biology of the ectoparasites involved, bearing in mind that grooming has varying degrees of effectiveness, depending on the parasite. Further research is warranted to enhance our understanding of the role of grooming in maintaining the health of wild animals in the face of parasite attacks.
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Affiliation(s)
- Michael S. Mooring
- Department of Biology, Point Loma Nazarene University, San Diego, CA 92106, USA;
- Quetzal Education and Research Center, San Gerardo de Dota 11911, Costa Rica
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2
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Werner CS, Kasan K, Geyer JK, Elmasri M, Farrell MJ, Nunn CL. Using phylogeographic link-prediction in primates to prioritize human parasite screening. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2023; 182:583-594. [PMID: 38384356 PMCID: PMC10878720 DOI: 10.1002/ajpa.24604] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 07/20/2022] [Indexed: 02/23/2024]
Abstract
Objectives The ongoing risk of emerging infectious disease has renewed calls for understanding the origins of zoonoses and identifying future zoonotic disease threats. Given their close phylogenetic relatedness and geographic overlap with humans, non-human primates (NHPs) have been the source of many infectious diseases throughout human evolution. NHPs harbor diverse parasites, with some infecting only a single host species while others infect species from multiple families. Materials and Methods We applied a novel link-prediction method to predict undocumented instances of parasite sharing between humans and NHPs. Our model makes predictions based on phylogenetic distances and geographic overlap among NHPs and humans in six countries with high NHP diversity: Columbia, Brazil, Democratic Republic of Congo, Madagascar, China and Indonesia. Results Of the 899 human parasites documented in the Global Infectious Diseases and Epidemiology Network (GIDEON) database for these countries, 12% were shared with at least one other NHP species. The link prediction model identified an additional 54 parasites that are likely to infect humans but were not reported in GIDEON. These parasites were mostly host generalists, yet their phylogenetic host breadth varied substantially. Discussion As human activities and populations encroach on NHP habitats, opportunities for parasite sharing between human and non-human primates will continue to increase. Our study identifies specific infectious organisms to monitor in countries with high NHP diversity, while the comparative analysis of host generalism, parasite taxonomy, and transmission mode provides insights to types of parasites that represent high zoonotic risk.
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Affiliation(s)
- Courtney S. Werner
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
| | - Koray Kasan
- Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Julie K. Geyer
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Mohamad Elmasri
- Department of Statistical Sciences, University of Toronto, Toronto, ON, Canada
| | - Maxwell J. Farrell
- Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, ON, Canada
| | - Charles L. Nunn
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Duke Global Health Institute, Duke University, Durham, NC 27710, USA
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3
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Choo J, Nghiem LTP, Benítez-López A, Carrasco LR. Range area and the fast-slow continuum of life history traits predict pathogen richness in wild mammals. Sci Rep 2023; 13:20191. [PMID: 37980452 PMCID: PMC10657380 DOI: 10.1038/s41598-023-47448-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 11/14/2023] [Indexed: 11/20/2023] Open
Abstract
Surveillance of pathogen richness in wildlife is needed to identify host species with a high risk of zoonotic disease spillover. While several predictors of pathogen richness in wildlife hosts have been proposed, their relative importance has not been formally examined. This hampers our ability to identify potential disease reservoirs, particularly in remote areas with limited surveillance efforts. Here we analyzed 14 proposed predictors of pathogen richness using ensemble modeling and a dataset of 1040 host species to identify the most important predictors of pathogen richness in wild mammal species. After controlling for research effort, larger species geographic range area was identified to be associated with higher pathogen richness. We found evidence of duality in the relationship between the fast-slow continuum of life-history traits and pathogen richness, where pathogen richness increases near the extremities. Taxonomic orders Carnivora, Proboscidea, Artiodactyla, and Perissodactyla were predicted to host high pathogen richness. The top three species with the highest pathogen richness predicted by our ensemble model were Canis lupus, Sus scrofa, and Alces alces. Our results can help support evidence-informed pathogen surveillance and disease reservoir management to prevent the emergence of future zoonotic diseases.
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Affiliation(s)
- Jacqueline Choo
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore.
| | | | - Ana Benítez-López
- Department of Biogeography and Global Change, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain.
| | - Luis R Carrasco
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
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4
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Cossette ML, Stewart DT, Haghani A, Zoller JA, Shafer ABA, Horvath S. Epigenetics and island-mainland divergence in an insectivorous small mammal. Mol Ecol 2023; 32:152-166. [PMID: 36226847 DOI: 10.1111/mec.16735] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 09/20/2022] [Accepted: 09/28/2022] [Indexed: 12/29/2022]
Abstract
Geographically isolated populations, specifically island-mainland counterparts, tend to exhibit phenotypic variation in many species. The so-called island syndrome occurs when different environmental pressures lead to insular divergence from mainland populations. This phenomenon can be seen in an island population of Nova Scotia masked shrews (Sorex cinereus), which have developed a specialized feeding habit and digestive enzyme compared to their mainland counterparts. Epigenetic modifications, such as DNA methylation (DNAm), can impact phenotypes by altering gene expression without changing the DNA sequence. Here, we used a de novo masked shrew genome assembly and a mammalian methylation array profiling 37 thousand conserved CpGs to investigate morphological and DNA methylation patterns between island and mainland populations. Island shrews were morphologically and epigenetically different than their mainland counterparts, exhibiting a smaller body size. A gene ontology enrichment analyses of differentially methylated CpGs implicated developmental and digestive system related pathways. Based on our shrew epigenetic clock, island shrews might also be aging faster than their mainland counterparts. This study provides novel insight on phenotypic and epigenetic divergence in island-mainland mammal populations and suggests an underlying role of methylation in island-mainland divergence.
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Affiliation(s)
- Marie-Laurence Cossette
- Department of Environmental Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada
| | - Donald T Stewart
- Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada
| | - Amin Haghani
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, California, USA
| | - Joseph A Zoller
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, California, USA
| | - Aaron B A Shafer
- Department of Environmental Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada
- Department of Forensic Science, Trent University, Peterborough, Ontario, Canada
| | - Steve Horvath
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, California, USA
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, California, USA
- Altos Labs, San Diego, California, USA
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5
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Pigeault R, Chevalier M, Cozzarolo CS, Baur M, Arlettaz M, Cibois A, Keiser A, Guisan A, Christe P, Glaizot O. Determinants of haemosporidian single- and co-infection risks in western palearctic birds. Int J Parasitol 2022; 52:617-627. [PMID: 35760376 DOI: 10.1016/j.ijpara.2022.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/30/2022]
Abstract
Understanding the drivers of infection risk helps us to detect the most at-risk species in a community and identify species whose intrinsic characteristics could act as potential reservoirs of pathogens. This knowledge is crucial if we are to predict the emergence and evolution of infectious diseases. To date, most studies have only focused on infections caused by a single parasite, leaving out co-infections. Yet, co-infections are of paramount importance in understanding the ecology and evolution of host-parasite interactions due to the wide range of effects they can have on host fitness and on the evolutionary trajectories of parasites. Here, we used a multinomial Bayesian phylogenetic modelling framework to explore the extent to which bird ecology and phylogeny impact the probability of being infected by one genus (hereafter single infection) or by multiple genera (hereafter co-infection) of haemosporidian parasites. We show that while nesting and migration behaviors influenced both the probability of being single- and co-infected, species position along the slow-fast life-history continuum and geographic range size were only pertinent in explaining variation in co-infection risk. We also found evidence for a phylogenetic conservatism regarding both single- and co-infections, indicating that phylogenetically related bird species tend to have similar infection patterns. This phylogenetic signal was four times stronger for co-infections than for single infections, suggesting that co-infections may act as a stronger selective pressure than single infections. Overall, our study underscores the combined influence of hosts' evolutionary history and attributes in determining infection risk in avian host communities. These results also suggest that co-infection risk might be under stronger deterministic control than single infection risk, potentially paving the way toward a better understanding of the emergence and evolution of infectious diseases.
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Affiliation(s)
- Romain Pigeault
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland; Laboratoire EBI, Equipe EES, UMR CNRS 7267, 86000 Poitiers, France.
| | - Mathieu Chevalier
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland; Ifremer, Centre de Bretagne, DYNECO-LEBCO, CS 10070, 29280 Plouzané, France
| | - Camille-Sophie Cozzarolo
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland; Biogéosciences, UMR 6282 CNRS, université Bourgogne Franche-Comté, 6 boulevard Gabriel, 21000 Dijon, France
| | - Molly Baur
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland
| | | | - Alice Cibois
- Natural History Museum of Geneva, C.P. 6434, CH-1211 Genève 6, Switzerland
| | - André Keiser
- Musée cantonal de zoologie, CH-1014 Lausanne, Switzerland
| | - Antoine Guisan
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland
| | - Philippe Christe
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland
| | - Olivier Glaizot
- Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland; Musée cantonal de zoologie, CH-1014 Lausanne, Switzerland
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Freitas LDC, Maldonado Júnior A, Mendonça RFBD, Ramos DGDS, Rossi RV, Pacheco RDC, Gentile R. Helminth community structure of Didelphis marsupialis (Didelphimorphia, Didelphidae) in a transition area between the Brazilian Amazon and the Cerrado. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2022; 31:e002922. [PMID: 35674531 DOI: 10.1590/s1984-29612022031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Although the common opossum, Didelphis marsupialis (Didelphimorphia: Didelphidae) is a species widely distributed in South America, knowledge about their helminth parasites and helminth community structure is scarce. The aims of this study were to describe the species composition and analyze the structure of the helminth community of the common opossum in an area of the Amazonian Arc in northern Mato Grosso. The helminths were recovered, counted, and identified in 32 individuals. Overall, 10,198 specimens were categorized into 9 helminths taxa (seven nematodes, one cestode, and one acanthocephalan). The most abundant species were Aspidodera raillieti, Viannaia hamata, and Travassostrongylus orloffi. No statistically significant differences in helminth abundance and prevalence were observed between host sexes. However, young hosts had higher abundance and prevalence of Didelphonema longispiculata, whereas Oligacanthorhynchus microcephalus had higher abundance and prevalence in adult hosts. This was the first study to analyze the helminth fauna and helminth community structure of D. marsupialis in the Amazonian Arc. This is the first report of the presence of A. raillieti, D. longispiculata, T. orloffi, T. minuta, V. hamata, and O. microcephalus in the state of Mato Grosso, Brazil.
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Affiliation(s)
- Leodil da Costa Freitas
- Laboratório de Parasitologia Veterinária e Doenças Parasitárias dos Animais Domésticos e Silvestres, Faculdade de Medicina Veterinária - FAVET, Universidade Federal de Mato Grosso - UFMT, Cuiabá, MT, Brasil
| | - Arnaldo Maldonado Júnior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | | | - Dirceu Guilherme de Souza Ramos
- Laboratório de Patologia e Parasitologia Veterinária, Unidade Acadêmica de Ciências Veterinárias, Universidade Federal de Jataí - UFJ, Jataí, GO, Brasil
| | - Rogério Vieira Rossi
- Laboratório de Mastozoologia, Instituto de Biociências - IB, Universidade Federal de Mato Grosso - UFMT, Cuiabá, MT, Brasil
- Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade - PPG/ECB, Instituto de Biociências - IB, Universidade Federal de Mato Grosso - UFMT, Cuiabá, MT, Brasil
| | - Richard de Campos Pacheco
- Laboratório de Parasitologia Veterinária e Doenças Parasitárias dos Animais Domésticos e Silvestres, Faculdade de Medicina Veterinária - FAVET, Universidade Federal de Mato Grosso - UFMT, Cuiabá, MT, Brasil
| | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
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7
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Keesing F, Ostfeld RS. Dilution effects in disease ecology. Ecol Lett 2021; 24:2490-2505. [PMID: 34482609 PMCID: PMC9291114 DOI: 10.1111/ele.13875] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 01/03/2023]
Abstract
For decades, people have reduced the transmission of pathogens by adding low‐quality hosts to managed environments like agricultural fields. More recently, there has been interest in whether similar ‘dilution effects’ occur in natural disease systems, and whether these effects are eroded as diversity declines. For some pathogens of plants, humans and other animals, the highest‐quality hosts persist when diversity is lost, so that high‐quality hosts dominate low‐diversity communities, resulting in greater pathogen transmission. Meta‐analyses reveal that these natural dilution effects are common. However, studying them remains challenging due to limitations on the ability of researchers to manipulate many disease systems experimentally, difficulties of acquiring data on host quality and confusion about what should and should not be considered a dilution effect. Because dilution effects are widely used in managed disease systems and have been documented in a variety of natural disease systems, their existence should not be considered controversial. Important questions remain about how frequently they occur and under what conditions to expect them. There is also ongoing confusion about their relationships to both pathogen spillover and general biogeographical correlations between diversity and disease, which has resulted in an inconsistent and confusing literature. Progress will require rigorous and creative research.
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8
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Deere JR, Schaber KL, Foerster S, Gilby IC, Feldblum JT, VanderWaal K, Wolf TM, Travis DA, Raphael J, Lipende I, Mjungu D, Pusey AE, Lonsdorf EV, Gillespie TR. Gregariousness is associated with parasite species richness in a community of wild chimpanzees. Behav Ecol Sociobiol 2021; 75:87. [PMID: 34456452 PMCID: PMC8386636 DOI: 10.1007/s00265-021-03030-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/25/2022]
Abstract
Increased risk of pathogen transmission through proximity and contact is a well-documented cost of sociality. Affiliative social contact, however, is an integral part of primate group life and can benefit health. Despite its importance to the evolution and maintenance of sociality, the tradeoff between costs and benefits of social contact for group-living primate species remains poorly understood. To improve our understanding of this interplay, we used social network analysis to investigate whether contact via association in the same space and/or physical contact measured through grooming were associated with helminth parasite species richness in a community of wild chimpanzees (Pan troglodytes schweinfurthii). We identified parasite taxa in 381 fecal samples from 36 individuals from the Kasekela community of chimpanzees in Gombe National Park, Tanzania, from November 1, 2006 - October 31, 2012. Over the study period, eight environmentally transmitted helminth taxa were identified. We quantified three network metrics for association and grooming contact, including degree strength, betweenness, and closeness. Our findings suggest that more gregarious individuals - those who spent more time with more individuals in the same space - had higher parasite richness, while the connections in the grooming network were not related to parasite richness. The expected parasite richness in individuals increased by 1.13 taxa (CI: 1.04, 1.22; p = 0.02) per one standard deviation increase in degree strength of association contact. The results of this study add to the understanding of the role that different types of social contact plays in the parasite richness of group-living social primates.
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Affiliation(s)
- Jessica R. Deere
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN USA
| | - Kathryn L. Schaber
- Department of Environmental Sciences and Program in Population Biology, Ecology, and Evolutionary Biology, Emory University, Atlanta, GA USA
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA USA
| | - Steffen Foerster
- Department of Evolutionary Anthropology, Duke University, Durham, NC USA
| | - Ian C. Gilby
- School of Human Evolution and Social Change, and Institute of Human Origins, Arizona State University, Tempe, AZ USA
| | - Joseph T. Feldblum
- Department of Anthropology, and Society of Fellows, University of Michigan, Ann Arbor, MI US
| | - Kimberly VanderWaal
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN USA
| | - Tiffany M. Wolf
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN USA
| | - Dominic A. Travis
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN USA
| | - Jane Raphael
- Tanzanian National Park Authority, Arusha, Tanzania
| | - Iddi Lipende
- Tanzania Wildlife Research Institute, Arusha, Tanzania
| | - Deus Mjungu
- Gombe Stream Research Center, The Jane Goodall Institute, Kigoma, Tanzania
| | - Anne E. Pusey
- Department of Evolutionary Anthropology, Duke University, Durham, NC USA
| | | | - Thomas R. Gillespie
- Department of Environmental Sciences and Program in Population Biology, Ecology, and Evolutionary Biology, Emory University, Atlanta, GA USA
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA USA
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9
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Dallas TA, Becker DJ. Taxonomic resolution affects host-parasite association model performance. Parasitology 2021; 148:584-590. [PMID: 33342442 PMCID: PMC10950372 DOI: 10.1017/s0031182020002371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 11/07/2022]
Abstract
Identifying the factors that structure host–parasite interactions is fundamental to understand the drivers of species distributions and to predict novel cross-species transmission events. More phylogenetically related host species tend to have more similar parasite associations, but parasite specificity may vary as a function of transmission mode, parasite taxonomy or life history. Accordingly, analyses that attempt to infer host−parasite associations using combined data on different parasite groups may perform quite differently relative to analyses on each parasite subset. In essence, are more data always better when predicting host−parasite associations, or does parasite taxonomic resolution matter? Here, we explore how taxonomic resolution affects predictive models of host−parasite associations using the London Natural History Museum's database of host–helminth interactions. Using boosted regression trees, we demonstrate that taxon-specific models (i.e. of Acanthocephalans, Nematodes and Platyhelminthes) consistently outperform full models in predicting mammal-helminth associations. At finer spatial resolutions, full and taxon-specific model performance does not vary, suggesting tradeoffs between phylogenetic and spatial scales of analysis. Although all models identify similar host and parasite covariates as important to such patterns, our results emphasize the importance of phylogenetic scale in the study of host–parasite interactions and suggest that using taxonomic subsets of data may improve predictions of parasite distributions and cross-species transmission. Predictive models of host–pathogen interactions should thus attempt to encompass the spatial resolution and phylogenetic scale desired for inference and prediction and potentially use model averaging or ensemble models to combine predictions from separately trained models.
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Affiliation(s)
- Tad A. Dallas
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA70802, USA
| | - Daniel J. Becker
- Department of Biology, University of Oklahoma, Norman, OK73019, USA
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10
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Habig B, Chowdhury S, Monfort SL, Brown JL, Swedell L, Foerster S. Predictors of helminth parasite infection in female chacma baboons ( Papio ursinus). Int J Parasitol Parasites Wildl 2021; 14:308-320. [PMID: 33898232 PMCID: PMC8056146 DOI: 10.1016/j.ijppaw.2021.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/22/2021] [Accepted: 03/22/2021] [Indexed: 11/26/2022]
Abstract
Helminth parasite infection can impose major consequences on host fitness. Several factors, including individual characteristics of hosts, environmental conditions, and patterns of coinfection, are thought to drive variation in parasite risk. Here, we report on four key drivers of parasite infection-phase of reproduction, steroid hormone profiles, rainfall, and patterns of coinfection-in a population of wild female chacma baboons (Papio ursinus) in South Africa. We collected data on reproductive state and hormone profiles over a 3-year span, and quantified helminth parasite burdens in 2955 fecal samples from 24 female baboons. On a host level, we found that baboons are sensitive to parasite infection during the costliest phases of the reproductive cycle: pregnant females harbored higher intensities of Protospirura eggs than cycling and lactating females; lactating and cycling females had a higher probability of Oesophagostomum infection than pregnant females; and cycling females exhibited lower Trichuris egg counts than pregnant and lactating females. Steroid hormones were associated with both immunoenhancing and immunosuppressive properties: females with high glucocorticoid concentrations exhibited high intensities of Trichuris eggs but were at low risk of Oesophagostomum infection; females with high estrogen and progestagen concentrations exhibited high helminth parasite richness; and females with high progestagen concentrations were at high risk of Oesophagostomum infection but exhibited low Protospirura egg counts. We observed an interaction between host reproductive state and progestagen concentrations in infection intensity of Protospirura: pregnant females exhibited higher intensities and non-pregnant females exhibited lower intensities of Protospirura eggs with increasing progestagen concentrations. At a population level, rainfall patterns were dominant drivers of parasite risk. Lastly, helminth parasites exhibited positive covariance, suggesting that infection probability increases if a host already harbors one or more parasite taxa. Together, our results provide a holistic perspective of factors that shape variation in parasite risk in a wild population of animals.
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Affiliation(s)
- Bobby Habig
- Department of Biology, Queens College, City University of New York, 65-30 Kissena Blvd. Flushing, NY, 11367, USA
| | - Shahrina Chowdhury
- Department of Anthropology, Brooklyn College, City University of New York, 2900 Bedford Ave, Brooklyn, NY, 11210, USA
- Anthropology Program, Graduate Center, City University of New York, 365 Fifth Avenue, New York NY, 10016, USA
- New York Consortium in Evolutionary Primatology, Anthropology Program, 365 Fifth Avenue, New York, NY, 10016, USA
| | - Steven L. Monfort
- Smithsonian Conservation Biology Institute, National Zoological Park, 1500 Remount Road, Front Royal, VA, 22630, USA
| | - Janine L. Brown
- Smithsonian Conservation Biology Institute, National Zoological Park, 1500 Remount Road, Front Royal, VA, 22630, USA
| | - Larissa Swedell
- Anthropology Program, Graduate Center, City University of New York, 365 Fifth Avenue, New York NY, 10016, USA
- New York Consortium in Evolutionary Primatology, Anthropology Program, 365 Fifth Avenue, New York, NY, 10016, USA
- Department of Anthropology, Queens College, City University of New York, 65-30 Kissena Blvd. Flushing, NY, 11367, USA
- Department of Archaeology, University of Cape Town, Private Bag X3, Rondebosch, 7701, Cape Town, South Africa
| | - Steffen Foerster
- Department of Evolutionary Anthropology, Duke University, Durham, NC, 27710, USA
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11
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Duszynski DW. Biodiversity of the Coccidia (Apicomplexa: Conoidasida) in vertebrates: what we know, what we do not know, and what needs to be done. Folia Parasitol (Praha) 2021; 68. [PMID: 33527909 DOI: 10.14411/fp.2021.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 09/18/2020] [Indexed: 12/15/2022]
Abstract
Over the last two decades my colleagues and I have assembled the literature on a good percentage of most of the coccidians (Conoidasida) known, to date, to parasitise: Amphibia, four major lineages of Reptilia (Amphisbaenia, Chelonia, Crocodylia, Serpentes), and seven major orders in the Mammalia (Carnivora, Chiroptera, Lagomorpha, Insectivora, Marsupialia, Primates, Scandentia). These vertebrates, combined, comprise about 15,225 species; only about 899 (5.8%) of them have been surveyed for coccidia and 1,946 apicomplexan valid species names or other forms are recorded in the literature. Based on these compilations and other factors, I extrapolated that there yet may be an additional 31,381 new apicomplexans still to be discovered in just these 12 vertebrate groups. Extending the concept to all of the other extant vertebrates on Earth; i.e. lizards (6,300 spp.), rodents plus 12 minor orders of mammals (3,180 spp.), birds (10,000 spp.), and fishes (33,000 spp.) and, conservatively assuming only two unique apicomplexan species per each vertebrate host species, I extrapolate and extend my prediction that we may eventually find 135,000 new apicomplexans that still need discovery and to be described in and from those vertebrates that have not yet been examined for them! Even doubling that number is a significant underestimation in my opinion.
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12
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Albery GF, Becker DJ. Fast-lived Hosts and Zoonotic Risk. Trends Parasitol 2020; 37:117-129. [PMID: 33214097 DOI: 10.1016/j.pt.2020.10.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 01/02/2023]
Abstract
Because most emerging human pathogens originate in mammals, many studies aim to identify host traits that determine the risk of sourcing zoonotic outbreaks. Studies regularly assert that 'fast-lived' mammal species exhibiting greater fecundity and shorter lifespans tend to host more zoonoses; however, the causes of this association remain poorly understood and they cover a range of immune and nonimmune mechanisms. We discuss these drivers in the context of evolutionary ecology and wildlife-human interactions. Ultimately, differentiating these mechanisms will require linking interspecific variation in life history with immunity, pathogen diversity, transmissibility, and zoonotic risk, and critical data gaps currently limit our ability to do so. We highlight sampling and analytical frameworks to address this gap and to better inform zoonotic reservoir prediction.
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Affiliation(s)
- Gregory F Albery
- Department of Biology, Georgetown University, Washington, DC, USA.
| | - Daniel J Becker
- Department of Biology, University of Oklahoma, Norman, OK, USA.
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13
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Villalobos-Segura MDC, García-Prieto L, Rico-Chávez O. Effects of latitude, host body size, and host trophic guild on patterns of diversity of helminths associated with humans, wild and domestic mammals of Mexico. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2020; 13:221-230. [PMID: 33224727 PMCID: PMC7666364 DOI: 10.1016/j.ijppaw.2020.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 11/29/2022]
Abstract
Parasites are strictly associated with their hosts and present a great diversity of life histories, often resulting in different diversity patterns than those observed in free-living species. However, ecological approaches have detected that, in some cases, mammal-associated helminths respond similarly to non-parasitic species in terms of diversity patterns. Using 2200 recorded interactions, we analysed the diversity patterns of helminths (Acanthocephala, Nematoda and Platyhelminthes) harbored by humans, wild and domestic mammals of Mexico, depending on latitude, host body mass and trophic guild (carnivore, herbivore, insectivore, omnivore), considering helminth richness and average taxonomic distinctness, and host phylogenetic diversity and phylogenetic clustering. Latitude was positively correlated with the average taxonomic distinctness encompassing the three parasite phyla and nematodes. Northern latitudes had less taxonomically related parasite assemblages. Host body mass had a significant negative relationship with the average taxonomic distinctness of acanthocephalans and the richness of helminths associated to wild hosts. The omnivore hosts had greater parasite richness, while insectivores had a less taxonomically related parasite assemblage and herbivores had a more heterogeneous parasite assemblage. Our results highlight the importance of incorporating different dimensions of diversity, such as average taxonomic distinctness and to consider the composition of parasite assemblages to better understand their diversity patterns. Four diversity measures were used to describe diversity patterns of helminths. Latitude was positively correlated with helminth average taxonomic distinctness. Host body mass was negatively related with the helminth richness of wildlife hosts. Helminth sets of omnivore hosts were richer in parasite species. Helminth sets of insectivore hosts had a wider taxonomic breadth.
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Affiliation(s)
- María Del Carmen Villalobos-Segura
- Laboratorio de Ecología de Enfermedades y Una Salud, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, 04510, México City, Mexico
| | - Luis García-Prieto
- Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, 04510, México City, Mexico
| | - Oscar Rico-Chávez
- Laboratorio de Ecología de Enfermedades y Una Salud, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, 04510, México City, Mexico
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14
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Gibb R, Redding DW, Chin KQ, Donnelly CA, Blackburn TM, Newbold T, Jones KE. Zoonotic host diversity increases in human-dominated ecosystems. Nature 2020; 584:398-402. [DOI: 10.1038/s41586-020-2562-8] [Citation(s) in RCA: 292] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 07/01/2020] [Indexed: 12/17/2022]
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15
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Tidière M, Badruna A, Fouchet D, Gaillard JM, Lemaître JF, Pontier D. Pathogens Shape Sex Differences in Mammalian Aging. Trends Parasitol 2020; 36:668-676. [PMID: 32540194 PMCID: PMC7203054 DOI: 10.1016/j.pt.2020.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/01/2020] [Accepted: 05/01/2020] [Indexed: 11/28/2022]
Abstract
Understanding the origin of sex differences in lifespan and aging patterns remains a salient challenge in both biogerontology and evolutionary biology. Different factors have been studied but the potential influence of pathogens has never been investigated. Sex differences, especially in hormones and resource allocation, generate a differential response to pathogens and thereby shape sex differences in lifespan or aging. We provide an integrative framework linking host pathogenic environment with both sex-specific selections on immune performance and mortality trajectories. We propose future directions to fill existing knowledge gaps about mechanisms that link sex differences, not only to exposition and sensitivity to pathogens, but also to mortality patterns, whilst emphasizing the urgent need to consider the role of sex in medicine. Years of research in biomedical sciences have revealed that sex-specific immune responses to pathogens can be associated with sex-specific consequences on health. These effects partly account for the observed sex gap in lifespan, leading women to be longer-lived than males in human populations. Sexual selection exerted on males and the pathogenic environment may explain, at least partly, the sex-difference in lifespan generally observed across mammalian populations.
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Affiliation(s)
- Morgane Tidière
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France.
| | - Adèle Badruna
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France
| | - David Fouchet
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France
| | - Jean-Michel Gaillard
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France
| | - Jean-François Lemaître
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France
| | - Dominique Pontier
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France
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16
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Lynsdale CL, Mon NO, Franco Dos Santos DJ, Aung HH, Nyein UK, Htut W, Childs D, Lummaa V. Demographic and reproductive associations with nematode infection in a long-lived mammal. Sci Rep 2020; 10:9214. [PMID: 32513991 PMCID: PMC7280280 DOI: 10.1038/s41598-020-66075-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 05/14/2020] [Indexed: 11/19/2022] Open
Abstract
Infection by macroparasites, such as nematodes, varies within vertebrate host systems; elevated infection is commonly observed in juveniles and males, and, for females, with different reproductive states. However, while such patterns are widely recognized in short-lived model systems, how they apply to long-lived hosts is comparatively understudied. Here, we investigated how infection varies with host age, sex, and female reproduction in a semi-captive population of individually marked Asian elephants Elephas maximus. We carried out 1,977 faecal egg counts (FECs) across five years to estimate nematode loads for 324 hosts. Infection patterns followed an established age-infection curve, whereby calves (5 years) exhibited the highest FECs and adults (45 years) the lowest. However, males and females had similar FECs across their long lifespan, despite distinct differences in life-history strategy and clear sexual dimorphism. Additionally, although mothers invest two years in pregnancy and a further three to five years into lactation, nematode load did not vary with four different measures of female reproduction. Our results provide a much-needed insight into the host-parasite dynamics of a long-lived host; determining host-specific associations with infection in such systems is important for broadening our knowledge of parasite ecology and provides practical applications for wildlife medicine and management.
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Affiliation(s)
| | - Nay Oo Mon
- Department of Animal Science, University of Veterinary Science, Yezin, Myanmar
| | | | - Htoo Htoo Aung
- Myanma Timber Enterprise, Ministry of Natural Resources and Environmental Conservation, Yangon, Myanmar
| | - U Kyaw Nyein
- Myanma Timber Enterprise, Ministry of Natural Resources and Environmental Conservation, Yangon, Myanmar
| | - Win Htut
- Myanma Timber Enterprise, Ministry of Natural Resources and Environmental Conservation, Yangon, Myanmar
| | - Dylan Childs
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK
| | - Virpi Lummaa
- Department of Biology, University of Turku, Turku, Finland
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17
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Eckhardt F, Strube C, Mathes KA, Mutschmann F, Thiesler H, Kraus C, Kappeler PM. Parasite burden in a short-lived chameleon, Furcifer labordi. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 10:231-240. [PMID: 31667086 PMCID: PMC6812308 DOI: 10.1016/j.ijppaw.2019.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 09/28/2019] [Accepted: 09/28/2019] [Indexed: 01/05/2023]
Abstract
Life history theory predicts that species with shorter lifespan should show higher investments into growth and reproduction at the expense of immune defenses. Labord's chameleon (Furcifer labordi) is the tetrapod with the shortest known life span. To investigate to which extent immunosenescence influences the die-off of these chameleons when they are only about 6 months old, we examined the gastrointestinal-, blood- and ectoparasite burden in F. labordi in Kirindy Forest (western Madagascar) and compared them with sympatric and longer living F. cf. nicosiai. Moreover, we included data from wild F. labordi that were singly housed under ambient conditions with daily food and water supply. Gastrointestinal parasite prevalence of wild F. labordi increased dramatically during the last 3 months of their lives, which include the reproductive period. Furcifer cf. nicosiai was found to have a belated increase in gastrointestinal parasites compared to F. labordi. In F. cf. nicosiai higher prevalence of blood parasites were found, which probably result from the longer exposure to the arthropod intermediate host. Both species showed infestations with ectoparasites, which peaked in the rainy season but disappeared towards the dry season. Male F. labordi showed a significantly higher prevalence of gastrointestinal - and ectoparasites and higher intensities of coccidians and ectoparasites than females. Males of F. cf. nicosiai exhibited higher prevalence of blood- and ectoparasites, as well as higher intensities in ectoparasites. Caged individuals of both sexes showed delayed senescence, reduced parasite burden and lived longer than their wild conspecifics. Overall, the increase in the prevalence in gastrointestinal - and blood parasites towards the disappearance of the wild population of F. labordi indicates that this species invests comparatively less energy in efficient immune system function, supporting the prediction of life history theory. Wild F. labordi show an increase of parasites towards their die-off Male F. labordi exhibit higher parasite burden than longer living females Longer living F. cf. nicosiai show belated increase in parasite burden Captive F. labordi were less infected and longer living than wild specimens
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Affiliation(s)
- Falk Eckhardt
- Dept. Sociobiology/Anthropology, Institute of Zoology and Anthropology, University of Göttingen, Kellnerweg 6, 37077, Göttingen, Germany
| | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Bünteweg 17, 30559, Hannover, Germany
| | - Karina A Mathes
- Clinic for Small Mammals, Reptiles and Birds, University of Veterinary Medicine Hannover, Bünteweg 9, 30559, Hannover, Germany
| | | | - Hauke Thiesler
- Institute of Clinical Biochemistry, Hannover Medical School Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
| | - Cornelia Kraus
- Dept. Sociobiology/Anthropology, Institute of Zoology and Anthropology, University of Göttingen, Kellnerweg 6, 37077, Göttingen, Germany.,Behavioral Ecology and Sociobiology Unit, German Primate Center, Kellnerweg 4, 37077, Göttingen, Germany
| | - Peter M Kappeler
- Dept. Sociobiology/Anthropology, Institute of Zoology and Anthropology, University of Göttingen, Kellnerweg 6, 37077, Göttingen, Germany.,Behavioral Ecology and Sociobiology Unit, German Primate Center, Kellnerweg 4, 37077, Göttingen, Germany
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18
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Woods GM, Fox S, Flies AS, Tovar CD, Jones M, Hamede R, Pemberton D, Lyons AB, Bettiol SS. Two Decades of the Impact of Tasmanian Devil Facial Tumor Disease. Integr Comp Biol 2019; 58:1043-1054. [PMID: 30252058 DOI: 10.1093/icb/icy118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The Tasmanian devil, a marsupial carnivore, has been restricted to the island state of Tasmania since its extinction on the Australian mainland about 3000 years ago. In the past two decades, this species has experienced severe population decline due to the emergence of devil facial tumor disease (DFTD), a transmissible cancer. During these 20 years, scientists have puzzled over the immunological and evolutionary responses by the Tasmanian devil to this transmissible cancer. Targeted strategies in population management and disease control have been developed as well as comparative processes to identify variation in tumor and host genetics. A multi-disciplinary approach with multi-institutional teams has produced considerable advances over the last decade. This has led to a greater understanding of the molecular pathogenesis and genomic classification of this cancer. New and promising developments in the Tasmanian devil's story include evidence that most immunized, and some wild devils, can produce an immune response to DFTD. Furthermore, epidemiology combined with genomic studies suggest a rapid evolution to the disease and that DFTD will become an endemic disease. Since 1998 there have been more than 350 publications, distributed over 37 Web of Science categories. A unique endemic island species has become an international curiosity that is in the spotlight of integrative and comparative biology research.
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Affiliation(s)
- Gregory M Woods
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania 7005, Australia
| | - Samantha Fox
- Save the Tasmanian Devil Program, DPIPWE, GPO Box 44, Hobart, Tasmania 7001, Australia.,Toledo Zoo, 2605 Broadway, Toledo, OH 43609, USA
| | - Andrew S Flies
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania 7005, Australia
| | - Cesar D Tovar
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania 7005, Australia.,School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, Tasmania 7005, Australia
| | - Menna Jones
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - Rodrigo Hamede
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - David Pemberton
- Save the Tasmanian Devil Program, DPIPWE, GPO Box 44, Hobart, Tasmania 7001, Australia
| | - A Bruce Lyons
- School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, Tasmania 7005, Australia
| | - Silvana S Bettiol
- School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, Tasmania 7005, Australia
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19
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Gutiérrez JS, Piersma T, Thieltges DW. Micro- and macroparasite species richness in birds: The role of host life history and ecology. J Anim Ecol 2019; 88:1226-1239. [PMID: 31002193 DOI: 10.1111/1365-2656.12998] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 03/16/2019] [Indexed: 12/26/2022]
Abstract
Identifying the factors shaping variation in parasite diversity among host species is crucial to understand wildlife diseases. Although micro- and macroparasites may exert different selective pressures on their hosts, studies investigating the determinants of parasite species richness in animals have rarely considered this divide. Here, we investigated the role of host life history and ecology in explaining the species richness of helminths (macroparasites) and haemosporidians (microparasites) in birds world-wide. We collated data from multiple global datasets on diverse bird traits (longevity, body mass, coloniality, migration distance/tendency, geographic range size and dietary and habitat breadths) and the species richness of their helminth and haemosporidian parasites. We tested predictors of helminth and haemosporidian parasite richness using phylogenetic generalized linear mixed models in a Bayesian framework. We found that, after controlling for research effort and host phylogeny, the richness of helminths, but not of haemosporidians, increased with host longevity, range size, migration distance and dietary breadth. Overall, these correlates were also important across different helminth groups (acanthocephalans, cestodes, nematodes and trematodes), and two additional ones (body mass, coloniality) emerged as important for cestodes and acanthocephalans. We propose that long life spans may promote the diversity of helminth parasite assemblages over evolutionary time, thus resulting in richer helminth faunas. Similarly, longer-distance migrations, larger ranges and broader dietary breadths are likely to lead to greater encounter rates and the accumulation of trophically transmitted helminths. In contrast, vector-borne haemosporidians may be influenced more by factors related to vector ecology than by the host traits included in the analyses. The lack of strong associations between haemosporidian species richness and host characteristics emphasizes the need to find appropriate traits to model the distribution and diversity of parasites with different environmental preferences in order to anticipate disease emergence risks associated with global change.
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Affiliation(s)
- Jorge S Gutiérrez
- Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Theunis Piersma
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Den Burg, Texel, The Netherlands.,Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
| | - David W Thieltges
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Den Burg, Texel, The Netherlands
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20
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Downs CJ, Schoenle LA, Han BA, Harrison JF, Martin LB. Scaling of Host Competence. Trends Parasitol 2019; 35:182-192. [DOI: 10.1016/j.pt.2018.12.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/13/2018] [Accepted: 12/13/2018] [Indexed: 12/31/2022]
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21
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Sudyka J, Podmokła E, Drobniak SM, Dubiec A, Arct A, Gustafsson L, Cichoń M. Sex-specific effects of parasites on telomere dynamics in a short-lived passerine-the blue tit. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2019; 106:6. [PMID: 30701351 PMCID: PMC6353807 DOI: 10.1007/s00114-019-1601-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 12/06/2018] [Accepted: 01/17/2019] [Indexed: 12/13/2022]
Abstract
Parasitic infections potentially drive host's life-histories since they can have detrimental effects on host's fitness. Telomere dynamics is a candidate mechanism to underlie life-history trade-offs and as such may correlate with observed fitness reduction in infected animals. We examined the relationship of chronic infection with two genera of haemosporidians causing avian malaria and malaria-like disease with host's telomere length (TL) in a longitudinal study of free-ranging blue tits. The observed overall infection prevalence was 80% and increased with age, constituting a potentially serious selective pressure in our population. We found longer telomeres in individuals infected with a parasite causing lesser blood pathologies i.e. Haemoproteus compared to Plasmodium genus, but this only held true among males. Female TL was independent of the infection type. Our results indicate that parasitic infections could bring about other types of costs to females than to males with respect to TL. Additionally, we detected linear telomere loss with age, however a random regression analysis did not confirm significant heterogeneity in TL of first breeders and telomere shortening rates in further life.
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Affiliation(s)
- Joanna Sudyka
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warszawa, Poland.
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland.
| | - Edyta Podmokła
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Szymon M Drobniak
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Anna Dubiec
- Museum and Institute of Zoology, Polish Academy of Sciences, ul. Wilcza 64, 00-679, Warszawa, Poland
| | - Aneta Arct
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Lars Gustafsson
- Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18 D, SE-752 36, Uppsala, Sweden
| | - Mariusz Cichoń
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
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22
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Gomes APN, Maldonado Júnior A, Bianchi RC, Souza JGR, D'Andrea PS, Gompper ME, Olifiers N. Variation in the prevalence and abundance of acanthocephalans in brown-nosed coatis Nasua nasua and crab-eating foxes Cerdocyon thous in the Brazilian Pantanal. BRAZ J BIOL 2018; 79:533-542. [PMID: 30540104 DOI: 10.1590/1519-6984.187881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/20/2018] [Indexed: 11/22/2022] Open
Abstract
Host infection by parasites is influenced by an array of factors, including host and environmental features. We investigated the relationship between host sex, body size and age, as well as seasonality on infection patterns by acanthocephalan in coatis (Procyonidae: Nasua nasua) and in crab-eating foxes (Canidae: Cerdocyon thous ) from the Brazilian Pantanal wetlands. Between 2006 and 2009, we collected faecal samples from these hosts and analyzed for the presence of acanthocephalan eggs. Prevalence, abundance and intensity of eggs of acanthocephalans were calculated. Egg abundance was analyzed using generalized linear models (GLM) with a negative binomial distribution and models were compared by Akaike criteria to verify the effect of biotic and abiotic factors. Prevalence of acanthocephalans was higher in the wet season in both host species but did not differ between host sexes; however, adult crab-eating foxes showed higher prevalence of acanthocephalan eggs than juveniles. In contrast, prevalence of acanthocephalan eggs found in coatis was higher in coati juveniles than in adults. Host age, season and maximum temperature were the top predictors of abundance of acanthocephalan eggs in crab-eating foxes whereas season and host sex were predictors of egg abundance in coatis. The importance of seasonality for abundance of acanthocephalan was clear for both host species. The influence of host-related attributes, however, varied by host species, with host gender and host age being important factors associated with prevalence and parasite loads.
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Affiliation(s)
- A P N Gomes
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil.,Programa de Pós-graduação em Biologia Parasitária, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil
| | - A Maldonado Júnior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil
| | - R C Bianchi
- Laboratório de Ecologia de Mamíferos, Faculdade de Ciências Agrárias e Veterinária, Departamento de Biologia Aplicada à Agropecuária, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP, Brasil
| | - J G R Souza
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil
| | - P S D'Andrea
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil
| | - M E Gompper
- School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building, Columbia, MO 65211, United States of America
| | - N Olifiers
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil.,Universidade Veiga de Almeida - UVA, Rua Ibituruna, 108, Maracanã, CEP 20271-020, Rio de Janeiro, RJ, Brasil
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23
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Dallas T, Huang S, Nunn C, Park AW, Drake JM. Estimating parasite host range. Proc Biol Sci 2018; 284:rspb.2017.1250. [PMID: 28855365 DOI: 10.1098/rspb.2017.1250] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 07/20/2017] [Indexed: 01/03/2023] Open
Abstract
Estimating the number of host species that a parasite can infect (i.e. host range) provides key insights into the evolution of host specialism and is a central concept in disease ecology. Host range is rarely estimated in real systems, however, because variation in species relative abundance and the detection of rare species makes it challenging to confidently estimate host range. We applied a non-parametric richness indicator to estimate host range in simulated and empirical data, allowing us to assess the influence of sampling heterogeneity and data completeness. After validating our method on simulated data, we estimated parasite host range for a sparsely sampled global parasite occurrence database (Global Mammal Parasite Database) and a repeatedly sampled set of parasites of small mammals from New Mexico (Sevilleta Long Term Ecological Research Program). Estimation accuracy varied strongly with parasite taxonomy, number of parasite occurrence records, and the shape of host species-abundance distribution (i.e. the dominance and rareness of species in the host community). Our findings suggest that between 20% and 40% of parasite host ranges are currently unknown, highlighting a major gap in our understanding of parasite specificity, host-parasite network structure, and parasite burdens.
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Affiliation(s)
- Tad Dallas
- Odum School of Ecology, University of Georgia, Athens, GA 30602, USA .,Environmental Science and Policy, University of California, Davis, Davis, CA 95616, USA
| | - Shan Huang
- Senckenberg Biodiversity and Climate Research Centre (BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany
| | - Charles Nunn
- Department of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA.,Duke Global Health Institute, Durham, NC 27710, USA
| | - Andrew W Park
- Odum School of Ecology, University of Georgia, Athens, GA 30602, USA.,Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
| | - John M Drake
- Odum School of Ecology, University of Georgia, Athens, GA 30602, USA.,Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA 30602, USA
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24
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Olival KJ, Hosseini PR, Zambrana-Torrelio C, Ross N, Bogich TL, Daszak P. Host and viral traits predict zoonotic spillover from mammals. Nature 2017. [PMID: 28636590 DOI: 10.103/nature22975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
The majority of human emerging infectious diseases are zoonotic, with viruses that originate in wild mammals of particular concern (for example, HIV, Ebola and SARS). Understanding patterns of viral diversity in wildlife and determinants of successful cross-species transmission, or spillover, are therefore key goals for pandemic surveillance programs. However, few analytical tools exist to identify which host species are likely to harbour the next human virus, or which viruses can cross species boundaries. Here we conduct a comprehensive analysis of mammalian host-virus relationships and show that both the total number of viruses that infect a given species and the proportion likely to be zoonotic are predictable. After controlling for research effort, the proportion of zoonotic viruses per species is predicted by phylogenetic relatedness to humans, host taxonomy and human population within a species range-which may reflect human-wildlife contact. We demonstrate that bats harbour a significantly higher proportion of zoonotic viruses than all other mammalian orders. We also identify the taxa and geographic regions with the largest estimated number of 'missing viruses' and 'missing zoonoses' and therefore of highest value for future surveillance. We then show that phylogenetic host breadth and other viral traits are significant predictors of zoonotic potential, providing a novel framework to assess if a newly discovered mammalian virus could infect people.
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Affiliation(s)
- Kevin J Olival
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | | | | | - Noam Ross
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | - Tiffany L Bogich
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | - Peter Daszak
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
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25
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Olival KJ, Hosseini PR, Zambrana-Torrelio C, Ross N, Bogich TL, Daszak P. Host and viral traits predict zoonotic spillover from mammals. Nature 2017. [PMID: 28636590 PMCID: PMC5570460 DOI: 10.1038/nature22975] [Citation(s) in RCA: 601] [Impact Index Per Article: 85.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Analysis of a comprehensive database of mammalian host–virus relationships reveals that both the total number of viruses that infect a given species and the proportion likely to be zoonotic are predictable and that this enables identification of mammalian species and geographic locations where novel zoonoses are likely to be found. Zoonotic viruses, many originating in wild mammals, pose a serious threat to global public health. Peter Daszak and colleagues create a comprehensive database of mammalian host–virus relationships, which they analyse to determine patterns of virus and zoonotic virus distribution in mammals. They identify various factors that influence the number and diversity of viruses that infect a given species as well as factors that predict the proportion of zoonotic viruses per species. In doing so, they identify mammalian species and geographic locations where novel zoonoses are likely to be found. The majority of human emerging infectious diseases are zoonotic, with viruses that originate in wild mammals of particular concern (for example, HIV, Ebola and SARS)1,2,3. Understanding patterns of viral diversity in wildlife and determinants of successful cross-species transmission, or spillover, are therefore key goals for pandemic surveillance programs4. However, few analytical tools exist to identify which host species are likely to harbour the next human virus, or which viruses can cross species boundaries5,6,7. Here we conduct a comprehensive analysis of mammalian host–virus relationships and show that both the total number of viruses that infect a given species and the proportion likely to be zoonotic are predictable. After controlling for research effort, the proportion of zoonotic viruses per species is predicted by phylogenetic relatedness to humans, host taxonomy and human population within a species range—which may reflect human–wildlife contact. We demonstrate that bats harbour a significantly higher proportion of zoonotic viruses than all other mammalian orders. We also identify the taxa and geographic regions with the largest estimated number of ‘missing viruses’ and ‘missing zoonoses’ and therefore of highest value for future surveillance. We then show that phylogenetic host breadth and other viral traits are significant predictors of zoonotic potential, providing a novel framework to assess if a newly discovered mammalian virus could infect people.
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Affiliation(s)
- Kevin J Olival
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | | | | | - Noam Ross
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | - Tiffany L Bogich
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
| | - Peter Daszak
- EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA
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26
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Minias P, Podlaszczuk P. Longevity is associated with relative brain size in birds. Ecol Evol 2017; 7:3558-3566. [PMID: 28515891 PMCID: PMC5433984 DOI: 10.1002/ece3.2961] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/28/2017] [Accepted: 03/07/2017] [Indexed: 11/06/2022] Open
Abstract
Brain size of vertebrates has long been recognized to evolve in close association with basic life-history traits, including lifespan. According to the cognitive buffer hypothesis, large brains facilitate the construction of behavioral responses against novel socioecological challenges through general cognitive processes, which should reduce mortality and increase lifespan. While the occurrence of brain size-lifespan correlation has been well documented in mammals, much less evidence exists for a robust link between brain size and longevity in birds. The aim of this study was to use phylogenetically controlled comparative approach to test for the relationship between brain size and longevity among 384 avian species from 23 orders. We used maximum lifespan and maximum reproductive lifespan as the measures of longevity and accounted for a set of possible confounding effects, such as allometry, sampling effort, geographic patterns, and life-history components (clutch size, incubation length, and mode of development). We found that both measures of longevity positively correlated with relative (residual) brain size. We also showed that major diversification of brain size preceded diversification of longevity in avian evolution. In contrast to previous findings, the effect of brain size on longevity was consistent across lineages with different development patterns, although the relatively low strength of this correlation could likely be attributed to the ubiquity of allomaternal care associated with the altricial mode of development. Our study indicates that the positive relationship between brain size and longevity in birds may be more general than previously thought.
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Affiliation(s)
- Piotr Minias
- Department of Biodiversity Studies and BioeducationFaculty of Biology and Environmental ProtectionUniversity of ŁódźŁódźPoland
| | - Patrycja Podlaszczuk
- Department of Biodiversity Studies and BioeducationFaculty of Biology and Environmental ProtectionUniversity of ŁódźŁódźPoland
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27
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Hayward A, Tsuboi M, Owusu C, Kotrschal A, Buechel SD, Zidar J, Cornwallis CK, Løvlie H, Kolm N. Evolutionary associations between host traits and parasite load: insights from Lake Tanganyika cichlids. J Evol Biol 2017; 30:1056-1067. [DOI: 10.1111/jeb.13053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/27/2017] [Accepted: 02/07/2017] [Indexed: 01/05/2023]
Affiliation(s)
- A. Hayward
- Centre for Ecology and Conservation; University of Exeter; Penryn UK
| | - M. Tsuboi
- Department of Animal Ecology; Uppsala University; Uppsala Sweden
| | - C. Owusu
- Department of Animal Ecology; Uppsala University; Uppsala Sweden
| | - A. Kotrschal
- Department of Zoology; Stockholm University; Stockholm Sweden
| | - S. D. Buechel
- Department of Zoology; Stockholm University; Stockholm Sweden
| | - J. Zidar
- IFM Biology; Linköping University; Linköping Sweden
| | | | - H. Løvlie
- IFM Biology; Linköping University; Linköping Sweden
| | - N. Kolm
- Department of Zoology; Stockholm University; Stockholm Sweden
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28
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McCaffrey K, Johnson PTJ. Drivers of symbiont diversity in freshwater snails: a comparative analysis of resource availability, community heterogeneity, and colonization opportunities. Oecologia 2016; 183:927-938. [PMID: 28039528 DOI: 10.1007/s00442-016-3795-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 12/04/2016] [Indexed: 12/16/2022]
Abstract
Decades of community ecology research have highlighted the importance of resource availability, habitat heterogeneity, and colonization opportunities in driving biodiversity. Less clear, however, is whether a similar suite of factors explains the diversity of symbionts. Here, we used a hierarchical dataset involving 12,712 freshwater snail hosts representing five species to test the relative importance of potential factors in driving symbiont richness. Specifically, we used model selection to assess the explanatory power of variables related to host species identity, resource availability (average body size, host density), ecological heterogeneity (richness of hosts and other taxa), and colonization opportunities (wetland size and amount of neighboring wetland area) on symbiont richness in 146 snail host populations in California, USA. We encountered a total of 23 taxa of symbionts, including both obligatory parasites such as digenetic trematodes as well as more commensal, mutualistic, or opportunistic groups such as aquatic insect larvae, annelids, and leeches. After validating richness estimates per host population using species accumulative curves, we detected positive effects on symbiont richness from host body size, total richness of the aquatic community, and colonization opportunities. Neither snail density nor the richness of snail species accounted for significant variation in symbiont diversity. Host species identity also affected symbiont richness, with higher gamma and average alpha diversity among more common host species with higher local abundances. These findings highlight the importance of multiple, concurrent factors in driving symbiont richness that extend beyond epidemiological measures of host abundance or host diversity alone.
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Affiliation(s)
- Keegan McCaffrey
- Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA
| | - Pieter T J Johnson
- Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA.
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29
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Springer A, Kappeler PM. Intestinal parasite communities of six sympatric lemur species at Kirindy Forest, Madagascar. Primate Biol 2016. [DOI: 10.5194/pb-3-51-2016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. Intestinal parasites impact host health, survival and reproductive success and therefore exert selective pressures on hosts' ecology and behavior. Thus, characterizing and comparing the parasitic fauna of different wildlife hosts sharing the same habitat can provide insights into the mechanisms underlying variation in parasitism, as well as the role of parasites as possible conservation threats. Several host traits have been proposed to generate differences in parasite diversity among different host species, including phylogeny, host body mass, host longevity, diet, and differences in ranging and social behavior. Here, we provide an overview of intestinal helminths and protozoa detected by fecal microscopy in six sympatric lemur species in Kirindy Forest, western Madagascar. The described patterns indicate that host phylogeny and diet may play an important role in shaping intestinal parasite assemblages in this system, as the closely related, omnivorous cheirogaleids showed the strongest overlap in parasite communities. No indication was found for an effect of body mass or longevity on parasite species richness. Regarding the effect of sociality, the two group-living lemur species, Propithecus verreauxi and Eulemur rufifrons, harbored directly transmitted parasites at higher prevalence than solitary foragers, but not at higher diversity. Effects of season and sex on parasite prevalence confirm the results of previous studies, with higher prevalence in the energetically demanding dry season and a male bias in parasitism. We highlight the opportunities of exploring the parasitic fauna of wildlife from a community ecology and evolutionary perspective, and identify prospects for future research on lemur parasitism.
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30
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Frigerio D, Cibulski L, Ludwig SC, Campderrich I, Kotrschal K, Wascher CAF. Excretion patterns of coccidian oocysts and nematode eggs during the reproductive season in Northern Bald Ibis ( Geronticus eremita). JOURNAL OF ORNITHOLOGY 2016; 157:839-851. [PMID: 27570727 PMCID: PMC4986318 DOI: 10.1007/s10336-015-1317-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 10/29/2015] [Accepted: 12/08/2015] [Indexed: 06/06/2023]
Abstract
Individual reproductive success largely depends on the ability to optimize behaviour, immune function and the physiological stress response. We have investigated correlations between behaviour, faecal steroid metabolites, immune parameters, parasite excretion patterns and reproductive output in a critically endangered avian species, the Northern Bald Ibis (Geronticus eremita). In particular, we related haematocrit, heterophil/lymphocyte ratio, excreted immune-reactive corticosterone metabolites and social behaviour with parasite excretion and two individual fitness parameters, namely, number of eggs laid and number of fledglings. We found that the frequency of excretion of parasites' oocysts and eggs tended to increase with ambient temperature. Paired individuals excreted significantly more samples containing nematode eggs than unpaired ones. The excretion of nematode eggs was also significantly more frequent in females than in males. Individuals with a high proportion of droppings containing coccidian oocysts were more often preened by their partners than individuals with lower excretion rates. We observed that the more eggs an individual incubated and the fewer offspring fledged, the higher the rates of excreted samples containing coccidian oocysts. Our results confirm that social behaviour, physiology and parasite burden are linked in a complex and context-dependent manner. They also contribute background information supporting future conservation programmes dealing with this critically endangered species.
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Affiliation(s)
- Didone Frigerio
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
- Department of Behavioural Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Lara Cibulski
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
| | - Sonja C. Ludwig
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
- Game & Wildlife Conservation Trust, The Coach House, Eggleston Hall, Barnard Castle, DG12 0AG UK
| | - Irene Campderrich
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
- Department of Animal Production, Neiker-Tecnalia, Vitoria-Gasteiz, Spain
| | - Kurt Kotrschal
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
- Department of Behavioural Biology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Claudia A. F. Wascher
- Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Fischerau 11, 4645 Grünau im Almtal, Austria
- Animal and Environment Research Group, Department of Life Sciences, Anglia Ruskin University, Cambridge, UK
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31
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Hannon ER, Kinsella JM, Calhoun DM, Joseph MB, Johnson PTJ. Endohelminths in Bird Hosts from Northern California and an Analysis of the Role of Life History Traits on Parasite Richness. J Parasitol 2015; 102:199-207. [PMID: 26579621 DOI: 10.1645/15-867] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The life history characteristics of hosts often influence patterns of parasite infection either by affecting the likelihood of parasite exposure or the probability of infection after exposure. In birds, migratory behavior has been suggested to affect both the composition and abundance of parasites within a host, although whether migratory birds have more or fewer parasites is unclear. To help address these knowledge gaps, we collaborated with airports, animal rescue/rehabilitation centers, and hunter check stations in the San Francisco Bay Area of California to collect 57 raptors, egrets, herons, ducks, and other waterfowl for parasitological analysis. After dissections of the gastrointestinal tract of each host, we identified 64 taxa of parasites: 5 acanthocephalans, 24 nematodes, 8 cestodes, and 27 trematodes. We then used a generalized linear mixed model to determine how life history traits influenced parasite richness among bird hosts, while controlling for host phylogeny. Parasite richness was greater in birds that were migratory with larger clutch sizes and lower in birds that were herbivorous. The effects of clutch size and diet are consistent with previous studies and have been linked to immune function and parasite exposure, respectively, whereas the effect of migration supports the hypothesis of "migratory exposure" rather than that of "migratory escape."
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Affiliation(s)
- Emily R Hannon
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122 CB334, Boulder, Colorado 80309
| | - John M Kinsella
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122 CB334, Boulder, Colorado 80309
| | - Dana M Calhoun
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122 CB334, Boulder, Colorado 80309
| | - Maxwell B Joseph
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122 CB334, Boulder, Colorado 80309
| | - Pieter T J Johnson
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122 CB334, Boulder, Colorado 80309
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32
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Kamilar JM, Beaudrot L, Reed KE. Climate and species richness predict the phylogenetic structure of African mammal communities. PLoS One 2015; 10:e0121808. [PMID: 25875361 PMCID: PMC4398448 DOI: 10.1371/journal.pone.0121808] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 02/04/2015] [Indexed: 11/18/2022] Open
Abstract
We have little knowledge of how climatic variation (and by proxy, habitat variation) influences the phylogenetic structure of tropical communities. Here, we quantified the phylogenetic structure of mammal communities in Africa to investigate how community structure varies with respect to climate and species richness variation across the continent. In addition, we investigated how phylogenetic patterns vary across carnivores, primates, and ungulates. We predicted that climate would differentially affect the structure of communities from different clades due to between-clade biological variation. We examined 203 communities using two metrics, the net relatedness (NRI) and nearest taxon (NTI) indices. We used simultaneous autoregressive models to predict community phylogenetic structure from climate variables and species richness. We found that most individual communities exhibited a phylogenetic structure consistent with a null model, but both climate and species richness significantly predicted variation in community phylogenetic metrics. Using NTI, species rich communities were composed of more distantly related taxa for all mammal communities, as well as for communities of carnivorans or ungulates. Temperature seasonality predicted the phylogenetic structure of mammal, carnivoran, and ungulate communities, and annual rainfall predicted primate community structure. Additional climate variables related to temperature and rainfall also predicted the phylogenetic structure of ungulate communities. We suggest that both past interspecific competition and habitat filtering have shaped variation in tropical mammal communities. The significant effect of climatic factors on community structure has important implications for the diversity of mammal communities given current models of future climate change.
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Affiliation(s)
- Jason M. Kamilar
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America
- Department of Anatomy, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona, United States of America
- * E-mail:
| | - Lydia Beaudrot
- Graduate Group in Ecology, University of California Davis, Davis, California, United States of America
- Department of Anthropology, University of California Davis, Davis, California, United States of America
| | - Kaye E. Reed
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America
- Institute of Human Origins, Arizona State University, Tempe, Arizona, United States of America
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33
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Leach K, Kelly R, Cameron A, Montgomery WI, Reid N. Expertly validated models and phylogenetically-controlled analysis suggests responses to climate change are related to species traits in the order lagomorpha. PLoS One 2015; 10:e0122267. [PMID: 25874407 PMCID: PMC4398435 DOI: 10.1371/journal.pone.0122267] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 12/24/2014] [Indexed: 11/19/2022] Open
Abstract
Climate change during the past five decades has impacted significantly on natural ecosystems, and the rate of current climate change is of great concern among conservation biologists. Species Distribution Models (SDMs) have been used widely to project changes in species' bioclimatic envelopes under future climate scenarios. Here, we aimed to advance this technique by assessing future changes in the bioclimatic envelopes of an entire mammalian order, the Lagomorpha, using a novel framework for model validation based jointly on subjective expert evaluation and objective model evaluation statistics. SDMs were built using climatic, topographical, and habitat variables for all 87 lagomorph species under past and current climate scenarios. Expert evaluation and Kappa values were used to validate past and current models and only those deemed 'modellable' within our framework were projected under future climate scenarios (58 species). Phylogenetically-controlled regressions were used to test whether species traits correlated with predicted responses to climate change. Climate change is likely to impact more than two-thirds of lagomorph species, with leporids (rabbits, hares, and jackrabbits) likely to undertake poleward shifts with little overall change in range extent, whilst pikas are likely to show extreme shifts to higher altitudes associated with marked range declines, including the likely extinction of Kozlov's Pika (Ochotona koslowi). Smaller-bodied species were more likely to exhibit range contractions and elevational increases, but showing little poleward movement, and fecund species were more likely to shift latitudinally and elevationally. Our results suggest that species traits may be important indicators of future climate change and we believe multi-species approaches, as demonstrated here, are likely to lead to more effective mitigation measures and conservation management. We strongly advocate studies minimising data gaps in our knowledge of the Order, specifically collecting more specimens for biodiversity archives and targeting data deficient geographic regions.
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Affiliation(s)
- Katie Leach
- Quercus, School of Biological Sciences, Queen’s University Belfast, Belfast, Northern Ireland
| | - Ruth Kelly
- Quercus, School of Biological Sciences, Queen’s University Belfast, Belfast, Northern Ireland
| | - Alison Cameron
- School of Biological Sciences, Queen’s University Belfast, Belfast, Northern Ireland
- Institute for Global Food Security (IGFS), Queen’s University Belfast, Belfast, Northern Ireland
| | - W. Ian Montgomery
- Quercus, School of Biological Sciences, Queen’s University Belfast, Belfast, Northern Ireland
| | - Neil Reid
- School of Biological Sciences, Queen’s University Belfast, Belfast, Northern Ireland
- Institute for Global Food Security (IGFS), Queen’s University Belfast, Belfast, Northern Ireland
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34
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Nguyen N, Fashing PJ, Boyd DA, Barry TS, Burke RJ, Goodale CB, Jones SCZ, Kerby JT, Kellogg BS, Lee LM, Miller CM, Nurmi NO, Ramsay MS, Reynolds JD, Stewart KM, Turner TJ, Venkataraman VV, Knauf Y, Roos C, Knauf S. Fitness impacts of tapeworm parasitism on wild gelada monkeys at Guassa, Ethiopia. Am J Primatol 2015; 77:579-94. [PMID: 25716944 DOI: 10.1002/ajp.22379] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 12/17/2014] [Accepted: 12/22/2014] [Indexed: 01/02/2023]
Abstract
Parasitism is expected to impact host morbidity or mortality, although the fitness costs of parasitism have rarely been quantified for wildlife hosts. Tapeworms in the genus Taenia exploit a variety of vertebrates, including livestock, humans, and geladas (Theropithecus gelada), monkeys endemic to the alpine grasslands of Ethiopia. Despite Taenia's adverse societal and economic impacts, we know little about the prevalence of disease associated with Taenia infection in wildlife or the impacts of this disease on host health, mortality and reproduction. We monitored geladas at Guassa, Ethiopia over a continuous 6½ year period for external evidence (cysts or coenuri) of Taenia-associated disease (coenurosis) and evaluated the impact of coenurosis on host survival and reproduction. We also identified (through genetic and histological analyses) the tapeworms causing coenurosis in wild geladas at Guassa as Taenia serialis. Nearly 1/3 of adult geladas at Guassa possessed ≥1 coenurus at some point in the study. Coenurosis adversely impacted gelada survival and reproduction at Guassa and this impact spanned two generations: adults with coenuri suffered higher mortality than members of their sex without coenuri and offspring of females with coenuri also suffered higher mortality. Coenurosis also negatively affected adult reproduction, lengthening interbirth intervals and reducing the likelihood that males successfully assumed reproductive control over units of females. Our study provides the first empirical evidence that coenurosis increases mortality and reduces fertility in wild nonhuman primate hosts. Our research highlights the value of longitudinal monitoring of individually recognized animals in natural populations for advancing knowledge of parasite-host evolutionary dynamics and offering clues to the etiology and control of infectious disease.
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Affiliation(s)
- Nga Nguyen
- Department of Anthropology, California State University Fullerton, Fullerton, California; Environmental Studies Program, California State University Fullerton, Fullerton, California
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35
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Tian J, Courtiol A, Schneeberger K, Greenwood AD, Czirják GÁ. Circulating white blood cell counts in captive and wild rodents are influenced by body mass rather than testes mass, a correlate of mating promiscuity. Funct Ecol 2015. [DOI: 10.1111/1365-2435.12394] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jundong Tian
- Department of Wildlife Diseases Leibniz Institute for Zoo and Wildlife Research 10315 Berlin Germany
- Department of Veterinary Medicine Freie Universität Berlin 14163 Berlin Germany
| | - Alexandre Courtiol
- Department of Evolutionary Genetics Leibniz Institute for Zoo and Wildlife Research 10315 Berlin Germany
| | - Karin Schneeberger
- Department of Evolutionary Ecology Leibniz Institute for Zoo and Wildlife Research 10315 Berlin Germany
| | - Alex D. Greenwood
- Department of Wildlife Diseases Leibniz Institute for Zoo and Wildlife Research 10315 Berlin Germany
- Department of Veterinary Medicine Freie Universität Berlin 14163 Berlin Germany
| | - Gábor Á. Czirják
- Department of Wildlife Diseases Leibniz Institute for Zoo and Wildlife Research 10315 Berlin Germany
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Bruns E, Hood ME, Antonovics J. Rate of resistance evolution and polymorphism in long- and short-lived hosts. Evolution 2015; 69:551-60. [DOI: 10.1111/evo.12577] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 11/13/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Emily Bruns
- Department of Biology; University of Virginia; Charlottesville Virginia 22903
| | - Michael E. Hood
- Department of Biology; Amherst College; Amherst Massachusetts 01002
| | - Janis Antonovics
- Department of Biology; University of Virginia; Charlottesville Virginia 22903
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Wojdak JM, Edman RM, Wyderko JA, Zemmer SA, Belden LK. Host density and competency determine the effects of host diversity on trematode parasite infection. PLoS One 2014; 9:e105059. [PMID: 25119568 PMCID: PMC4132046 DOI: 10.1371/journal.pone.0105059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 07/18/2014] [Indexed: 01/03/2023] Open
Abstract
Variation in host species composition can dramatically alter parasite transmission in natural communities. Whether diverse host communities dilute or amplify parasite transmission is thought to depend critically on species traits, particularly on how hosts affect each other’s densities, and their relative competency as hosts. Here we studied a community of potential hosts and/or decoys (i.e. non-competent hosts) for two trematode parasite species, Echinostoma trivolvis and Ribeiroia ondatrae, which commonly infect wildlife across North America. We manipulated the density of a focal host (green frog tadpoles, Rana clamitans), in concert with manipulating the diversity of alternative species, to simulate communities where alternative species either (1) replace the focal host species so that the total number of individuals remains constant (substitution) or (2) add to total host density (addition). For E. trivolvis, we found that total parasite transmission remained roughly equal (or perhaps decreased slightly) when alternative species replaced focal host individuals, but parasite transmission was higher when alternative species were added to a community without replacing focal host individuals. Given the alternative species were roughly equal in competency, these results are consistent with current theory. Remarkably, both total tadpole and per-capita tadpole infection intensity by E. trivolvis increased with increasing intraspecific host density. For R. ondatrae, alternative species did not function as effective decoys or hosts for parasite infective stages, and the diversity and density treatments did not produce clear changes in parasite transmission, although high tank to tank variation in R. ondatrae infection could have obscured patterns.
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Affiliation(s)
- Jeremy M. Wojdak
- Department of Biology, Radford University, Radford, Virginia, United States of America
- * E-mail:
| | - Robert M. Edman
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
| | - Jennie A. Wyderko
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
| | - Sally A. Zemmer
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
| | - Lisa K. Belden
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
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Helminth parasite species richness in rodents from Southeast Asia: role of host species and habitat. Parasitol Res 2014; 113:3713-26. [PMID: 25082015 DOI: 10.1007/s00436-014-4036-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 07/04/2014] [Indexed: 01/29/2023]
Abstract
Southeast Asia is a biodiversity hotspot that harbours many species of rodents, including some that live in close contact with humans. They host helminth parasites, some of which are of zoonotic importance. It is therefore important to understand the factors that influence the richness of the helminths parasitizing rodents. The specific objectives of this study were to evaluate rodent species as a factor determining helminth richness in rodent assemblages, to identify the major rodent helminth reservoir species and to explore the influence of habitat on helminth richness. We estimated helminth species richness using a large dataset of 18 rodent species (1,651 individuals) originating from Southeast Asia and screened for helminth parasites. The use of an unbiased estimator shows that the helminth species richness varies substantially among rodent species and across habitats. We confirmed this pattern by investigating the number of helminth species per individual rodent in all rodent species, and specifically in the two mitochondrial lineages Rattus tanezumi and R. tanezumi R3, which were captured in all habitats.
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39
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Nunn CL, Brezine C, Jolles AE, Ezenwa VO. Interactions between Micro- and Macroparasites Predict Microparasite Species Richness across Primates. Am Nat 2014; 183:494-505. [DOI: 10.1086/675362] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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40
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Lemaître JF, Müller DWH, Clauss M. A test of the metabolic theory of ecology with two longevity data sets reveals no common cause of scaling in biological times. Mamm Rev 2014. [DOI: 10.1111/mam.12023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jean-François Lemaître
- Université de Lyon; F-69000 Lyon France
- CNRS, UMR5558; Laboratoire de Biométrie et Biologie Evolutive; Université Lyon 1; F-69622 Villeurbanne France
| | | | - Marcus Clauss
- Clinic for Zoo Animals, Exotic Pets and Wildlife; Vetsuisse Faculty; University of Zurich; Winterthurerstr. 260 8057 Zurich Switzerland
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Young H, Griffin RH, Wood CL, Nunn CL. Does habitat disturbance increase infectious disease risk for primates? Ecol Lett 2013; 16:656-63. [PMID: 23448139 DOI: 10.1111/ele.12094] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 12/17/2012] [Accepted: 01/22/2013] [Indexed: 12/17/2022]
Abstract
Many studies have suggested that ecosystem conservation protects human and wildlife populations against infectious disease. We tested this hypothesis using data on primates and their parasites. First, we tested for relationships between species' resilience to human disturbance and their parasite richness, prevalence and immune defences, but found no associations. We then conducted a meta-analysis of the effects of disturbance on parasite prevalence, which revealed no overall effect, but a positive effect for one of four types of parasites (indirectly transmitted parasites). Finally, we conducted intraspecific analyses of malaria prevalence as a function of mammalian species richness in chimpanzees and gorillas, and an interspecific analysis of geographic overlap and parasite species richness, finding that higher levels of host richness favoured greater parasite risk. These results suggest that anthropogenic effects on disease transmission are complex, and highlight the need to define the conditions under which environmental change will increase or decrease disease transmission.
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Affiliation(s)
- Hillary Young
- Center for the Environment, Harvard University, Cambridge, MA 02138, USA.
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Gillespie TR, Barelli C, Heistermann M. Effects of social status and stress on patterns of gastrointestinal parasitism in wild white-handed gibbons (Hylobates lar). AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2013; 150:602-8. [DOI: 10.1002/ajpa.22232] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 12/21/2012] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Michael Heistermann
- German Primate Center (DPZ); Reproductive Biology Unit; Göttingen; 37077; Germany
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