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Volkova NA, Romanov MN, Abdelmanova AS, Larionova PV, German NY, Vetokh AN, Shakhin AV, Volkova LA, Sermyagin AA, Anshakov DV, Fisinin VI, Griffin DK, Sölkner J, Brem G, McEwan JC, Brauning R, Zinovieva NA. Genome-Wide Association Study Revealed Putative SNPs and Candidate Genes Associated with Growth and Meat Traits in Japanese Quail. Genes (Basel) 2024; 15:294. [PMID: 38540354 PMCID: PMC10970133 DOI: 10.3390/genes15030294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/23/2024] [Indexed: 06/14/2024] Open
Abstract
The search for SNPs and candidate genes that determine the manifestation of major selected traits is one crucial objective for genomic selection aimed at increasing poultry production efficiency. Here, we report a genome-wide association study (GWAS) for traits characterizing meat performance in the domestic quail. A total of 146 males from an F2 reference population resulting from crossing a fast (Japanese) and a slow (Texas White) growing breed were examined. Using the genotyping-by-sequencing technique, genomic data were obtained for 115,743 SNPs (92,618 SNPs after quality control) that were employed in this GWAS. The results identified significant SNPs associated with the following traits at 8 weeks of age: body weight (nine SNPs), daily body weight gain (eight SNPs), dressed weight (33 SNPs), and weights of breast (18 SNPs), thigh (eight SNPs), and drumstick (three SNPs). Also, 12 SNPs and five candidate genes (GNAL, DNAJC6, LEPR, SPAG9, and SLC27A4) shared associations with three or more traits. These findings are consistent with the understanding of the genetic complexity of body weight-related traits in quail. The identified SNPs and genes can be used in effective quail breeding as molecular genetic markers for growth and meat characteristics for the purpose of genetic improvement.
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Affiliation(s)
- Natalia A. Volkova
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Michael N. Romanov
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, Kent, UK;
| | - Alexandra S. Abdelmanova
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Polina V. Larionova
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Nadezhda Yu. German
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Anastasia N. Vetokh
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Alexey V. Shakhin
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Ludmila A. Volkova
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Alexander A. Sermyagin
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
| | - Dmitry V. Anshakov
- Breeding and Genetic Center “Zagorsk Experimental Breeding Farm”—Branch of the Federal Research Center “All-Russian Poultry Research and Technological Institute”, Russian Academy of Sciences, Sergiev Posad 141311, Moscow Oblast, Russia;
| | - Vladimir I. Fisinin
- Federal Research Center “All-Russian Poultry Research and Technological Institute” of the Russian Academy of Sciences, Sergiev Posad 141311, Moscow Oblast, Russia;
| | - Darren K. Griffin
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, Kent, UK;
| | - Johann Sölkner
- Institute of Livestock Sciences (NUWI), University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria;
| | - Gottfried Brem
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine, 1210 Vienna, Austria;
| | - John C. McEwan
- AgResearch, Invermay Agricultural Centre, Mosgiel 9053, New Zealand; (J.C.M.); (R.B.)
| | - Rudiger Brauning
- AgResearch, Invermay Agricultural Centre, Mosgiel 9053, New Zealand; (J.C.M.); (R.B.)
| | - Natalia A. Zinovieva
- L. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia; (N.A.V.); (A.S.A.); (P.V.L.); (N.Y.G.); (A.N.V.); (A.V.S.); (L.A.V.); (A.A.S.)
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Haqani MI, Nakano M, Nagano AJ, Nakamura Y, Tsudzuki M. Association analysis of production traits of Japanese quail (Coturnix japonica) using restriction-site associated DNA sequencing. Sci Rep 2023; 13:21307. [PMID: 38042890 PMCID: PMC10693557 DOI: 10.1038/s41598-023-48293-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 10/10/2023] [Accepted: 11/24/2023] [Indexed: 12/04/2023] Open
Abstract
This study was designed to perform an association analysis and identify SNP markers associated with production traits of Japanese quail using restriction-site-associated DNA sequencing. Weekly body weight data from 805 quail were collected from hatching to 16 weeks of age. A total number of 3990 eggs obtained from 399 female quail were used to assess egg quality traits. Egg-related traits were measured at the beginning of egg production (first stage) and at 12 weeks of age (second stage). Five eggs were analyzed at each stage. Traits, such as egg weight, egg length and short axes, eggshell strength and weight, egg equator thickness, yolk weight, diameter, and colour, albumen weight, age of first egg, total number of laid eggs, and egg production rate, were assessed. A total of 383 SNPs and 1151 associations as well as 734 SNPs and 1442 associations were identified in relation to quail production traits using general linear model (GLM) and mixed linear model (MLM) approaches, respectively. The GLM-identified SNPs were located on chromosomes 1-13, 15, 17-20, 24, 26-28, and Z, underlying phenotypic traits, except for egg and albumen weight at the first stage and yolk yellowness at the second stage. The MLM-identified SNPs were positioned on defined chromosomes associated with phenotypic traits except for the egg long axis at the second stage of egg production. Finally, 35 speculated genes were identified as candidate genes for the targeted traits based on their nearest positions. Our findings provide a deeper understanding and allow a more precise genetic improvement of production traits of Galliformes, particularly in Japanese quail.
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Affiliation(s)
- Mohammad Ibrahim Haqani
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8525, Japan.
| | - Michiharu Nakano
- Faculty of Agriculture and Marine Sciences, Kochi University, Nankoku, Kochi, 783-8502, Japan
| | - Atsushi J Nagano
- Faculty of Agriculture, Ryukoku University, Otsu, Shiga, 520-2194, Japan
- Institute for Advanced Biosciences, Keio University, Yamagata, 997-0017, Japan
| | - Yoshiaki Nakamura
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8525, Japan
- Japanese Avian Bioresource Project Research Center, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8525, Japan
| | - Masaoki Tsudzuki
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8525, Japan.
- Japanese Avian Bioresource Project Research Center, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8525, Japan.
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Haas V, Vollmar S, Preuß S, Rodehutscord M, Camarinha-Silva A, Bennewitz J. Composition of the ileum microbiota is a mediator between the host genome and phosphorus utilization and other efficiency traits in Japanese quail (Coturnix japonica). Genet Sel Evol 2022; 54:20. [PMID: 35260076 PMCID: PMC8903610 DOI: 10.1186/s12711-022-00697-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 01/13/2022] [Indexed: 11/24/2022] Open
Abstract
Background Phosphorus is an essential nutrient in all living organisms and, currently, it is the focus of much attention due to its global scarcity, the environmental impact of phosphorus from excreta, and its low digestibility due to its storage in the form of phytates in plants. In poultry, phosphorus utilization is influenced by composition of the ileum microbiota and host genetics. In our study, we analyzed the impact of host genetics on composition of the ileum microbiota and the relationship of the relative abundance of ileal bacterial genera with phosphorus utilization and related quantitative traits in Japanese quail. An F2 cross of 758 quails was genotyped with 4k genome-wide single nucleotide polymorphisms (SNPs) and composition of the ileum microbiota was characterized using target amplicon sequencing. Heritabilities of the relative abundance of bacterial genera were estimated and quantitative trait locus (QTL) linkage mapping for the host was conducted for the heritable genera. Phenotypic and genetic correlations and recursive relationships between bacterial genera and quantitative traits were estimated using structural equation models. A genomic best linear unbiased prediction (GBLUP) and microbial (M)BLUP hologenomic selection approach was applied to assess the feasibility of breeding for improved phosphorus utilization based on the host genome and the heritable part of composition of the ileum microbiota. Results Among the 59 bacterial genera examined, 24 showed a significant heritability (nominal p ≤ 0.05), ranging from 0.04 to 0.17. For these genera, six genome-wide significant QTL were mapped. Significant recursive effects were found, which support the indirect host genetic effects on the host’s quantitative traits via microbiota composition in the ileum of quail. Cross-validated microbial and genomic prediction accuracies confirmed the strong impact of microbial composition and host genetics on the host’s quantitative traits, as the GBLUP accuracies based on the heritable microbiota-mediated components of the traits were similar to the accuracies of conventional GBLUP based on genome-wide SNPs. Conclusions Our results revealed a significant effect of host genetics on composition of the ileal microbiota and confirmed that host genetics and composition of the ileum microbiota have an impact on the host’s quantitative traits. This offers the possibility to breed for improved phosphorus utilization based on the host genome and the heritable part of composition of the ileum microbiota. Supplementary Information The online version contains supplementary material available at 10.1186/s12711-022-00697-8.
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Quantitative trait loci for growth-related traits in Japanese quail (Coturnix japonica) using restriction-site associated DNA sequencing. Mol Genet Genomics 2021; 296:1147-1159. [PMID: 34251529 DOI: 10.1007/s00438-021-01806-w] [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: 03/02/2021] [Accepted: 06/16/2021] [Indexed: 10/20/2022]
Abstract
This study aimed to identify quantitative trait loci (QTLs) for growth-related traits by constructing a genetic linkage map based on single nucleotide polymorphism (SNP) markers in Japanese quail. A QTL mapping population of 277 F2 birds was obtained from an intercross between a male of a large-sized strain and three females of a normal-sized strain. Body weight (BW) was measured weekly from hatching to 16 weeks of age. Non-linear regression growth models of Weibull, Logistic, Gompertz, Richards, and Brody were analyzed, and growth curve parameters of Richards was selected as the best model to describe the quail growth curve of the F2 birds. Restriction-site associated DNA sequencing developed 125 SNP markers that were informative between their parental strains. The SNP markers were distributed on 16 linkage groups that spanned 795.9 centiMorgan (cM) with an average marker interval of 7.3 cM. QTL analysis of phenotypic traits revealed four main-effect QTLs. Detected QTLs were located on chromosomes 1 and 3 and were associated with BW from 4 to 16 weeks of age and asymptotic weight of Richards model at genome-wide significant at 1% or 5% level. No QTL was detected for BW from 0 to 3 weeks of age. This is the first report identified QTLs for asymptotic weight of the Richards parameter in Japanese quail. These results highlight that the combination of QTL studies and the RAD-seq method will aid future breeding programs identify genes underlying the QTL and the application of marker-assisted selection in the poultry industry, particularly the Japanese quail.
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Vollmar S, Haas V, Schmid M, Preuß S, Joshi R, Rodehutscord M, Bennewitz J. Mapping genes for phosphorus utilization and correlated traits using a 4k SNP linkage map in Japanese quail (Coturnix japonica). Anim Genet 2020; 52:90-98. [PMID: 33140443 DOI: 10.1111/age.13018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2020] [Indexed: 12/17/2022]
Abstract
A large F2 cross with 920 Japanese quail was used to map QTL for phosphorus utilization, calcium utilization, feed per gain and body weight gain. In addition, four bone ash traits were included, because it is known that they are genetically correlated with the focal trait of phosphorus utilization. Trait recording was done at the juvenile stage of the birds. The individuals were genotyped genome-wide for about 4k SNPs and a linkage map constructed, which agreed well with the reference genome. QTL linkage mapping was performed using multimarker regression analysis in a line cross model. Single marker association mapping was done within the mapped QTL regions. The results revealed several genome-wide significant QTL. For the focal trait phosphorus utilization, a QTL on chromosome CJA3 could be detected by linkage mapping, which was substantiated by the results of the SNP association mapping. Four candidate genes were identified for this QTL, which should be investigated in future functional studies. Some overlap of QTL regions for different traits was detected, which is in agreement with the corresponding genetic correlations. It seems that all traits investigated are polygenic in nature with some significant QTL and probably many other small-effect QTL that were not detectable in this study.
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Affiliation(s)
- S Vollmar
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
| | - V Haas
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
| | - M Schmid
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
| | - S Preuß
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
| | - R Joshi
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Ås, N-1432, Norway
| | - M Rodehutscord
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
| | - J Bennewitz
- Institute of Animal Science, University of Hohenheim, Stuttgart, 70599, Germany
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Nunome M, Yoshioka R, Shinkai T, Kino K, Matsuda Y. Assessment of genetic diversity and genetic relationships of farm and laboratory quail populations in Japan using microsatellite DNA markers. Vet Med Sci 2020; 6:1000-1008. [PMID: 32706180 PMCID: PMC7738727 DOI: 10.1002/vms3.328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 05/25/2020] [Accepted: 07/06/2020] [Indexed: 12/29/2022] Open
Abstract
Background The Japanese quail (Coturnix japonica) is an important poultry species owing to their high economic efficiency and biological advantages. The genetic diversity of farm quail populations has rarely been studied. Objectives This study aimed to assess the genetic diversity of farm quail populations and their genetic relationships, which could provide important information for designing breeding programmes to maintain egg and/or meat production efficiency. Methods Molecular phylogenetic and STRUCTURE analyses were conducted for seven farm populations and six laboratory lines using 50 microsatellite markers previously developed by us. Results The genetic diversity within each farm population was relatively high despite long‐term breeding within closed colonies. However, the genetic variation between populations was absent. Twenty highly polymorphic markers, selected based on Ne, He and FST values, enabled the construction of reliable phylogenetic trees and STRUCTURE plots. Conclusions In the farm populations analysed in the present study, gene flow between genetically distant populations is needed to restore genetic diversity between farm populations, which could exploit heterosis and decrease the risk of inbreeding depression. Our findings demonstrate that these markers are useful for examining the genetic structure of farm quail populations.
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Affiliation(s)
- Mitsuo Nunome
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Rie Yoshioka
- Aichi Agricultural Research Center, Nagakute, Japan
| | - Takuro Shinkai
- Laboratory of Avian Bioscience, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | | | - Yoichi Matsuda
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.,Laboratory of Avian Bioscience, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
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Knaga S, Siwek M, Tavaniello S, Maiorano G, Witkowski A, Jezewska-Witkowska G, Bednarczyk M, Zieba G. Identification of quantitative trait loci affecting production and biochemical traits in a unique Japanese quail resource population. Poult Sci 2018; 97:2267-2277. [PMID: 29672744 DOI: 10.3382/ps/pey110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 03/10/2018] [Indexed: 11/20/2022] Open
Abstract
The objective of the current study was to identify QTL associated with body weight, growth rate, egg quality traits, concentration of selected blood plasma, and yolk lipids as well as concentration of selected macro- and microelements, color, pH, basic chemical composition, and drip loss of breast muscle of Japanese quail (Coturnix japonica). Twenty-two meat-type males (line F33) were crossed with twenty-two laying-type females (line S22) to produce a generation of F1 hybrids. The F2 generation was created by mating 44 randomly chosen F1 hybrids, which were full siblings. The birds were individually weighed from the first to eighth week of age. At the age of 19 wk, 2 to 4 eggs were individually collected from each female and an analysis of the egg quality traits was performed. At slaughter, blood and breast muscles were collected from 324 individuals of the resource population. The basic chemical composition, concentration of chosen macro- and microelements, color, pH, and drip loss were determined in the muscle samples. The concentration of chosen lipids was determined in egg yolk and blood plasma. In total, 30 microsatellite markers located on chromosome 1 and 2 were genotyped. QTL mapping including additive and dominance genetic effects revealed 6 loci on chromosome 1 of the Japanese quail affecting the egg number, egg production rate, egg weight, specific gravity, egg shell weight, concentration of Na in breast muscle. In turn, there were 9 loci on chromosome 2 affecting the body weight in the first, fourth, and sixth week of age, growth rate in the second and seventh week of age, specific gravity, concentration of K and Cu in breast muscle, and the levels of triacylglycerols in blood plasma. In this study, QTL with a potential effect on the Na, K, and Cu content in breast muscles in poultry and on specific gravity in the Japanese quail were mapped for the first time.
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Affiliation(s)
- S Knaga
- Institute of Biological Bases of Animal Production, University of Life Sciences, Akademicka 13,20-950 Lublin, Poland
| | - M Siwek
- Department of Animal Biochemistry and Biotechnology, UTP University of Sciences and Technology, Bydgoszcz 85-064, Poland
| | - S Tavaniello
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso 86100, Italy
| | - G Maiorano
- Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso 86100, Italy
| | - A Witkowski
- Institute of Biological Bases of Animal Production, University of Life Sciences, Akademicka 13,20-950 Lublin, Poland
| | - G Jezewska-Witkowska
- Institute of Biological Bases of Animal Production, University of Life Sciences, Akademicka 13,20-950 Lublin, Poland
| | - M Bednarczyk
- Department of Animal Biochemistry and Biotechnology, UTP University of Sciences and Technology, Bydgoszcz 85-064, Poland
| | - G Zieba
- Institute of Biological Bases of Animal Production, University of Life Sciences, Akademicka 13,20-950 Lublin, Poland
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Cavasini R, Batista MRD, Klaczko LB. Chromosomal localization of microsatellite loci in Drosophila mediopunctata. Genet Mol Biol 2015; 38:55-8. [PMID: 25983625 PMCID: PMC4415555 DOI: 10.1590/s1415-475738138120140275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 11/23/2014] [Indexed: 11/21/2022] Open
Abstract
Drosophila mediopunctata has been used as a model organism for
genetics and evolutionary studies in the last three decades. A linkage map with 48
microsatellite loci recently published for this species showed five syntenic groups,
which had their homology determined to Drosophila melanogaster
chromosomes. Then, by inference, each of the groups was associated with one of the
five major chromosomes of D. mediopunctata. Our objective was to
carry out a genetic (chromosomal) analysis to increase the number of available loci
with known chromosomal location. We made a simultaneous analysis of visible mutant
phenotypes and microsatellite genotypes in a backcross of a standard strain and a
mutant strain, which had each major autosome marked. Hence, we could establish the
chromosomal location of seventeen loci; including one from each of the five major
linkage groups previously published, and twelve new loci. Our results were congruent
with the previous location and they open new possibilities to future work integrating
microsatellites, chromosomal inversions, and genetic determinants of physiological
and morphological variation.
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Affiliation(s)
- Renato Cavasini
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Marcos Roberto Dias Batista
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Louis Bernard Klaczko
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
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