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Awadi A, Suchentrunk F, Knauer F, Smith S, Tolesa Z, Ben Slimen H. Spatial diversity of MHC class II DRB exon2 sequences in North African cape hares (Lepus capensis): positive selection and climatic adaptation signals. Mamm Biol 2022. [DOI: 10.1007/s42991-022-00258-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kloch A, Biedrzycka A, Szewczyk M, Nowak S, Niedźwiedzka N, Kłodawska M, Hájková A, Hulva P, Jędrzejewska B, Mysłajek R. High genetic diversity of immunity genes in an expanding population of a highly mobile carnivore, the grey wolf
Canis
lupus
, in Central Europe. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Agnieszka Kloch
- Department of Ecology, Institute of Functional Biology and Ecology, Faculty of Biology, Biological and Chemical Research Centre University of Warsaw Warszawa Poland
| | | | - Maciej Szewczyk
- Department of Vertebrate Ecology and Zoology Faculty of Biology University of Gdańsk Gdańsk Poland
| | - Sabina Nowak
- Association for Nature “Wolf” Twardorzeczka Poland
| | | | - Monika Kłodawska
- Department of Zoology Faculty of Science Charles University Prague Czech Republic
| | - Andrea Hájková
- State Nature Conservancy of the Slovak Republic Spišská Nová Ves Slovakia
| | - Pavel Hulva
- Department of Zoology Faculty of Science Charles University Prague Czech Republic
- Department of Biology and Ecology Faculty of Science University of Ostrava Ostrava Czech Republic
| | | | - Robert Mysłajek
- Department of Ecology, Institute of Functional Biology and Ecology, Faculty of Biology, Biological and Chemical Research Centre University of Warsaw Warszawa Poland
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LaCava MEF, Malmberg JL, Edwards WH, Johnson LNL, Allen SE, Ernest HB. Spatio-temporal analyses reveal infectious disease-driven selection in a free-ranging ungulate. ROYAL SOCIETY OPEN SCIENCE 2021; 8:210802. [PMID: 34430048 PMCID: PMC8355672 DOI: 10.1098/rsos.210802] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/06/2021] [Indexed: 05/07/2023]
Abstract
Infectious diseases play an important role in wildlife population dynamics by altering individual fitness, but detecting disease-driven natural selection in free-ranging populations is difficult due to complex disease-host relationships. Chronic wasting disease (CWD) is a fatal infectious prion disease in cervids for which mutations in a single gene have been mechanistically linked to disease outcomes, providing a rare opportunity to study disease-driven selection in wildlife. In Wyoming, USA, CWD has gradually spread across mule deer (Odocoileus hemionus) populations, producing natural variation in disease history to evaluate selection pressure. We used spatial variation and a novel temporal comparison to investigate the relationship between CWD and a mutation at codon 225 of the mule deer prion protein gene that slows disease progression. We found that individuals with the 'slow' 225F allele were less likely to test positive for CWD, and the 225F allele was more common in herds exposed to CWD longer. We also found that in the past 2 decades, the 225F allele frequency increased more in herds with higher CWD prevalence. This study expanded on previous research by analysing spatio-temporal patterns of individual and herd-based disease data to present multiple lines of evidence for disease-driven selection in free-ranging wildlife.
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Affiliation(s)
- Melanie E. F. LaCava
- Wildlife Genomics and Disease Ecology Laboratory, Department of Veterinary Sciences, Program in Ecology, University of Wyoming, Laramie, WY 82071, USA
| | - Jennifer L. Malmberg
- Department of Veterinary Sciences, Wyoming State Veterinary Laboratory, University of Wyoming, Laramie, WY 82070, USA
| | - William H. Edwards
- Wyoming Game and Fish Department, Wildlife Health Laboratory, Laramie, WY 82070, USA
| | - Laura N. L. Johnson
- Wildlife Genomics and Disease Ecology Laboratory, Department of Veterinary Sciences, University of Wyoming, Laramie, WY 82071, USA
| | - Samantha E. Allen
- Wyoming Game and Fish Department, Department of Veterinary Sciences, University of Wyoming, Laramie, WY 82070, USA
| | - Holly B. Ernest
- Wildlife Genomics and Disease Ecology Laboratory, Department of Veterinary Sciences, Program in Ecology, University of Wyoming, Laramie, WY 82071, USA
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Stefanović M, Ćirović D, Bogdanović N, Knauer F, Heltai M, Szabó L, Lanszki J, Zhelev CD, Schaschl H, Suchentrunk F. Positive selection on the MHC class II DLA-DQA1 gene in golden jackals (Canis aureus) from their recent expansion range in Europe and its effect on their body mass index. BMC Ecol Evol 2021; 21:122. [PMID: 34134625 PMCID: PMC8207625 DOI: 10.1186/s12862-021-01856-z] [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: 11/18/2020] [Accepted: 06/10/2021] [Indexed: 11/17/2022] Open
Abstract
Background In Europe, golden jackals (Canis aureus) have been expanding their range out of the southern and southeastern Balkans towards central Europe continually since the 1960s. Here, we investigated the level of functional diversity at the MHC class II DLA-DQA1 exon 2 in golden jackal populations from Bulgaria, Serbia, and Hungary. Specifically, we tested for positive selection on and geographic variation at that locus due to adaptation to supposedly regionally varying pathogenic landscapes. To test for potential fitness effects of different protein variants on individual body condition, we used linear modeling of individual body mass indexes (bmi) and accounted for possible age, sex, geographical, and climatic effects. The latter approach was performed, however, only on Serbian individuals with appropriate data. Results Only three different DLA-DQA1 alleles were detected, all coding for different amino-acid sequences. The neutrality tests revealed no significant but positive values; there was no signal of spatial structuring and no deviation from the Hardy–Weinberg equilibrium across the studied range of expansion. However, we found a signal of trans-species polymorphism and significant test results for positive selection on three codons. Our information-theory based linear modeling results indicated an effect of ambient temperature on the occurrence of individual DLA-DQA1 genotypes in individuals from across the studied expansion range, independent from geographical position. Our linear modeling results of individual bmi values indicated that yearlings homozygous for DLA-DQA1*03001 reached values typical for adults contrary to yearlings carrying other genotypes (protein combinations). This suggested better growth rates and thus a possible fitness advantage of yearlings homozygous for DLA-DQA1*03001. Conclusions Our results indicate a demographic (stochastic) signal of reduced DLA-DQA1 exon 2 variation, in line with the documented historical demographic bottleneck. At the same time, however, allelic variation was also affected by positive selection and adaptation to varying ambient temperature, supposedly reflecting geographic variation in the pathogenic landscape. Moreover, an allele effect on body mass index values of yearlings suggested differential fitness associated with growth rates. Overall, a combination of a stochastic effect and positive selection has shaped and is still shaping the variation at the studied MHC locus. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-021-01856-z.
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Affiliation(s)
- Milomir Stefanović
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia.,Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160, Vienna, Austria
| | - Duško Ćirović
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000, Belgrade, Serbia
| | - Neda Bogdanović
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000, Belgrade, Serbia
| | - Felix Knauer
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160, Vienna, Austria
| | - Miklós Heltai
- Institute for Wildlife Conservation, Szent István University, Páter Károly utca 1, Gödöllő, 2100, Hungary
| | - László Szabó
- Institute for Wildlife Conservation, Szent István University, Páter Károly utca 1, Gödöllő, 2100, Hungary
| | - József Lanszki
- Ecological Research Group, University of Kaposvár, PO Box 16, 7401, Kaposvár, Hungary
| | | | - Helmut Schaschl
- Department of Evolutionary Anthropology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.
| | - Franz Suchentrunk
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160, Vienna, Austria
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Non-Invasive Molecular Survey of Sarcoptic Mange in Wildlife: Diagnostic Performance in Wolf Faecal Samples Evaluated by Multi-Event Capture-Recapture Models. Pathogens 2021; 10:pathogens10020243. [PMID: 33672583 PMCID: PMC7924033 DOI: 10.3390/pathogens10020243] [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: 01/18/2021] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 11/16/2022] Open
Abstract
Sarcoptic mange is globally enzootic, and non-invasive methods with high diagnostic specificity for its surveillance in wildlife are lacking. We describe the molecular detection of Sarcoptes scabiei in non-invasively collected faecal samples, targeting the 16S rDNA gene. We applied this method to 843 Iberian wolf Canis lupus signatus faecal samples collected in north-western Portugal (2006-2018). We further integrated this with serological data (61 samples from wolf and 20 from red fox Vulpes vulpes, 1997-2019) in multi-event capture-recapture models. The mean predicted prevalence by the molecular analysis of wolf faecal samples from 2006-2018 was 7.2% (CI95 5.0-9.4%; range: 2.6-11.7%), highest in 2009. The mean predicted seroprevalence in wolves was 24.5% (CI95 18.5-30.6%; range: 13.0-55.0%), peaking in 2006-2009. Multi-event capture-recapture models estimated 100% diagnostic specificity and moderate diagnostic sensitivity (30.0%, CI95 14.0-53.0%) for the molecular method. Mange-infected individually identified wolves showed a tendency for higher mortality versus uninfected wolves (ΔMortality 0.150, CI95 -0.165-0.458). Long-term serology data highlights the endemicity of sarcoptic mange in wild canids but uncovers multi-year epidemics. This study developed and evaluated a novel method for surveying sarcoptic mange in wildlife populations by the molecular detection of S. scabiei in faecal samples, which stands out for its high specificity and non-invasive character.
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Plasil M, Wijkmark S, Elbers JP, Oppelt J, Burger PA, Horin P. The Major Histocompatibility Complex of Old World Camels-A Synopsis. Cells 2019; 8:cells8101200. [PMID: 31590341 PMCID: PMC6829570 DOI: 10.3390/cells8101200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 12/20/2022] Open
Abstract
This study brings new information on major histocompatibility complex (MHC) class III sub-region genes in Old World camels and integrates current knowledge of the MHC region into a comprehensive overview for Old World camels. Out of the MHC class III genes characterized, TNFA and the LY6 gene family showed high levels of conservation, characteristic for MHC class III loci in general. For comparison, an MHC class II gene TAP1, not coding for antigen presenting molecules but functionally related to MHC antigen presenting functions was studied. TAP1 had many SNPs, even higher than the MHC class I and II genes encoding antigen presenting molecules. Based on this knowledge and using new camel genomic resources, we constructed an improved genomic map of the entire MHC region of Old World camels. The MHC class III sub-region shows a standard organization similar to that of pig or cattle. The overall genomic structure of the camel MHC is more similar to pig MHC than to cattle MHC. This conclusion is supported by differences in the organization of the MHC class II sub-region, absence of functional DY genes, different organization of MIC genes in the MHC class I sub-region, and generally closer evolutionary relationships of camel and porcine MHC gene sequences analyzed so far.
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Affiliation(s)
- Martin Plasil
- Dept. of Animal Genetics, Veterinary and Pharmaceutical University, Palackeho trida 1, 612 42 Brno, Czech Republic.
- Ceitec VFU, RG Animal Immunogenomics, Palackeho trida 1, 612 42 Brno, Czech Republic.
| | - Sofia Wijkmark
- Dept. of Animal Genetics, Veterinary and Pharmaceutical University, Palackeho trida 1, 612 42 Brno, Czech Republic.
| | - Jean Pierre Elbers
- Research Institute of Wildlife Ecology, Department of Integrative Biology and Evolution, Vetmeduni Vienna, Savoyenstraße 1, 1160 Wien, Austria.
| | - Jan Oppelt
- Ceitec MU, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic.
- Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic.
| | - Pamela Anna Burger
- Research Institute of Wildlife Ecology, Department of Integrative Biology and Evolution, Vetmeduni Vienna, Savoyenstraße 1, 1160 Wien, Austria.
| | - Petr Horin
- Dept. of Animal Genetics, Veterinary and Pharmaceutical University, Palackeho trida 1, 612 42 Brno, Czech Republic.
- Ceitec VFU, RG Animal Immunogenomics, Palackeho trida 1, 612 42 Brno, Czech Republic.
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