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Measuring fitness and inferring natural selection from long-term field studies: different measures lead to nuanced conclusions. Behav Ecol Sociobiol 2022. [DOI: 10.1007/s00265-022-03176-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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2
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Leitner P, Rippert J, Matocq MD. Genetic Structure Across a Contact Zone between Xerospermophilus Ground Squirrels in Southern California. WEST N AM NATURALIST 2017. [DOI: 10.3398/064.077.0203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | - Jennifer Rippert
- Department of Natural Resources and Environmental Science; Program in Ecology, Evolution, and Conservation Biology, University of Nevada, Reno, NV 89557
| | - Marjorie D. Matocq
- Department of Natural Resources and Environmental Science; Program in Ecology, Evolution, and Conservation Biology, University of Nevada, Reno, NV 89557
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3
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Cobble KR, Califf KJ, Stone NE, Shuey MM, Birdsell DN, Colman RE, Schupp JM, Aziz M, Van Andel R, Rocke TE, Wagner DM, Busch JD. Genetic variation at the MHC DRB1 locus is similar across Gunnison's prairie dog (Cynomys gunnisoni) colonies regardless of plague history. Ecol Evol 2016; 6:2624-51. [PMID: 27066243 PMCID: PMC4798151 DOI: 10.1002/ece3.2077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 01/16/2023] Open
Abstract
Yersinia pestis was introduced to North America around 1900 and leads to nearly 100% mortality in prairie dog (Cynomys spp.) colonies during epizootic events, which suggests this pathogen may exert a strong selective force. We characterized genetic diversity at an MHC class II locus (DRB1) in Gunnison's prairie dog (C. gunnisoni) and quantified population genetic structure at the DRB1 versus 12 microsatellite loci in three large Arizona colonies. Two colonies, Seligman (SE) and Espee Ranch (ES), have experienced multiple plague‐related die‐offs in recent years, whereas plague has never been documented at Aubrey Valley (AV). We found fairly low allelic diversity at the DRB1 locus, with one allele (DRB1*01) at high frequency (0.67–0.87) in all colonies. Two other DRB1 alleles appear to be trans‐species polymorphisms shared with the black‐tailed prairie dog (C. ludovicianus), indicating that these alleles have been maintained across evolutionary time frames. Estimates of genetic differentiation were generally lower at the MHC locus (FST = 0.033) than at microsatellite markers (FST = 0.098). The reduced differentiation at DRB1 may indicate that selection has been important for shaping variation at MHC loci, regardless of the presence or absence of plague in recent decades. However, genetic drift has probably also influenced the DRB1 locus because its level of differentiation was not different from that of microsatellites in an FST outlier analysis. We then compared specific MHC alleles to plague survivorship in 60 C. gunnisoni that had been experimentally infected with Y. pestis. We found that survival was greater in individuals that carried at least one copy of the most common allele (DRB1*01) compared to those that did not (60% vs. 20%). Although the sample sizes of these two groups were unbalanced, this result suggests the possibility that this MHC class II locus, or a nearby linked gene, could play a role in plague survival.
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Affiliation(s)
- Kacy R Cobble
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Katy J Califf
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Nathan E Stone
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Megan M Shuey
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Dawn N Birdsell
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Rebecca E Colman
- Translational Genomics Research Institute North 3051 W. Shamrell Blvd #106 Flagstaff Arizona 86001 USA
| | - James M Schupp
- Translational Genomics Research Institute North 3051 W. Shamrell Blvd #106 Flagstaff Arizona 86001 USA
| | - Maliha Aziz
- Translational Genomics Research Institute North 3051 W. Shamrell Blvd #106 Flagstaff Arizona 86001 USA
| | - Roger Van Andel
- University of California Berkeley MC 7150 Berkeley California 94720 USA
| | - Tonie E Rocke
- United States Geological Survey National Wildlife Health Center 6006 Schroeder Road Madison Wisconsin 53711 USA
| | - David M Wagner
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
| | - Joseph D Busch
- Center for Microbial Genetics and Genomics Northern Arizona University PO Box 4073 Flagstaff Arizona 86011 USA
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Schwanz LE, Sherwin WB, Ognenovska K, Lacey EA. Paternity and male mating strategies of a ground squirrel (
Ictidomys parvidens
) with an extended mating season. J Mammal 2016. [DOI: 10.1093/jmammal/gyv204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Animal mating systems are driven by the temporal and spatial distribution of sexually receptive females. In mammals, ground-dwelling squirrels represent an ideal clade for testing predictions regarding the effects of these parameters on male reproductive strategies. While the majority of ground squirrel species have a short, highly synchronous annual breeding season that occurs immediately after females emerge from hibernation, the Mexican or Rio Grande ground squirrel ( Ictidomys parvidens ) differs markedly in having an extended mating season (2 months) and a long delay between emergence from hibernation and female receptivity (1–2 months). Both traits are expected to favor polygyny by increasing the chances that a male can secure matings with multiple females (e.g., females that come into estrus on different days). To test this prediction, we used microsatellite markers to characterize the mating system of a population of Rio Grande ground squirrels from Carlsbad, New Mexico. Our analyses indicated a high frequency of multiple paternity of litters in this population. Paternity was not related to spatial overlap between known mothers and assigned fathers, suggesting that territory defense is unlikely to be an effective male reproductive strategy in the study population. Dominance interactions among males were frequent, with heavier males typically winning dyadic interactions. Surprisingly, however, males with lower dominance scores appeared to have higher reproductive success, as did males that were active over a greater extent of the study site. Collectively, these results suggest that the mating system of the Rio Grande ground squirrel is best described as scramble competition polygyny, with the primary male reproductive strategy consisting of searching for estrous females. Similar patterns of male–male competition have been reported for a few other ground squirrel species, providing potentially important opportunities for comparative studies of the factors favoring this form of male reproductive strategy.
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Brown NL, Peacock MM, Ritchie ME. Genetic variation and population structure in a threatened species, the Utah prairie dog Cynomys parvidens: the use of genetic data to inform conservation actions. Ecol Evol 2016; 6:426-46. [PMID: 26843928 PMCID: PMC4729250 DOI: 10.1002/ece3.1874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 11/23/2015] [Indexed: 11/11/2022] Open
Abstract
The Utah prairie dog (Cynomys parvidens), listed as threatened under the United States Endangered Species Act, was the subject of an extensive eradication program throughout its range during the 20th century. Eradication campaigns, habitat destruction/fragmentation/conversion, and epizootic outbreaks (e.g., sylvatic plague) have reduced prairie dog numbers from an estimated 95,000 individuals in the 1920s to approximately 14,000 (estimated adult spring count) today. As a result of these anthropogenic actions, the species is now found in small isolated sets of subpopulations. We characterized the levels of genetic diversity and population genetic structure using 10 neutral nuclear microsatellite loci for twelve populations (native and transplanted) representative of the three management designated "recovery units," found in three distinct biogeographic regions, sampled across the species' range. The results indicate (1) low levels of genetic diversity within colonies (H e = 0.109-0.357; H o = 0.106- 0.313), (2) high levels of genetic differentiation among colonies (global F ST = 0.296), (3) very small genetic effective population sizes, and (4) evidence of genetic bottlenecks. The genetic data reveal additional subdivision such that colonies within recovery units do not form single genotype clusters consistent with recovery unit boundaries. Genotype cluster membership support historical gene flow among colonies in the easternmost West Desert Recovery Unit with the westernmost Pausaugunt colonies and among the eastern Pausaugunt colonies and the Awapa Recovery unit to the north. In order to maintain the long-term viability of the species, there needs to be an increased focus on maintaining suitable habitat between groups of existing populations that can act as connective corridors. The location of future translocation sites should be located in areas that will maximize connectivity, leading to maintenance of genetic variation and evolutionary potential.
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Affiliation(s)
- Nathanael L. Brown
- Department of BiologySyracuse University107 College Place, LSCSyracuseNew York13224 Mark Ritchie
- Utah Field OfficeUnited States Fish and Wildlife Service1789 N. Wedgewood LaneCedar CityUtah84721
| | - Mary M. Peacock
- Department of Biology MS314University of Nevada Reno1664 North Virginia StreetReno89557Nevada
| | - Mark E. Ritchie
- Department of BiologySyracuse University107 College Place, LSCSyracuseNew York13224 Mark Ritchie
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Phuong MA, Lim MCW, Wait DR, Rowe KC, Moritz C. Delimiting species in the genusOtospermophilus(Rodentia: Sciuridae), using genetics, ecology, and morphology. Biol J Linn Soc Lond 2014. [DOI: 10.1111/bij.12391] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Mark A. Phuong
- Department of Integrative Biology; Museum of Vertebrate Zoology; University of California; Berkeley, 3101 Valley Life Science Building Berkeley CA 94720 USA
| | - Marisa C. W. Lim
- Department of Integrative Biology; Museum of Vertebrate Zoology; University of California; Berkeley, 3101 Valley Life Science Building Berkeley CA 94720 USA
| | - Daniel R. Wait
- Department of Integrative Biology; Museum of Vertebrate Zoology; University of California; Berkeley, 3101 Valley Life Science Building Berkeley CA 94720 USA
| | - Kevin C. Rowe
- Department of Integrative Biology; Museum of Vertebrate Zoology; University of California; Berkeley, 3101 Valley Life Science Building Berkeley CA 94720 USA
- Sciences Department; Museum Victoria; Melbourne VIC 3001 Australia
| | - Craig Moritz
- Department of Integrative Biology; Museum of Vertebrate Zoology; University of California; Berkeley, 3101 Valley Life Science Building Berkeley CA 94720 USA
- Research School of Biology; The Australian National University; Acton ACT 0200 Australia
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8
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Munroe KE, Koprowski JL. Levels of social behaviors and genetic structure in a population of round-tailed ground squirrels (Xerospermophilus tereticaudus). Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-013-1677-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gorrell JC, Boutin S, Raveh S, Neuhaus P, Côté SD, Coltman DW. Sexing the Sciuridae: a simple and accurate set of molecular methods to determine sex in tree squirrels, ground squirrels and marmots. Mol Ecol Resour 2012; 12:806-9. [PMID: 22726203 DOI: 10.1111/j.1755-0998.2012.03165.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We determined the sequence of the male-specific minor histocompatibility complex antigen (Smcy) from the Y chromosome of seven squirrel species (Sciuridae, Rodentia). Based on conserved regions inside the Smcy intron sequence, we designed PCR primers for sex determination in these species that can be co-amplified with nuclear loci as controls. PCR co-amplification yields two products for males and one for females that are easily visualized as bands by agarose gel electrophoresis. Our method provides simple and reliable sex determination across a wide range of squirrel species.
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Affiliation(s)
- Jamieson C Gorrell
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9.
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Jones PH, Van Zant JL, Dobson FS. Variation in reproductive success of male and female Columbian ground squirrels (Urocitellus columbianus). CAN J ZOOL 2012. [DOI: 10.1139/z2012-042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The imbalanced reproductive success of polygynous mammals results in sexual selection on male traits like body size. Males and females might have more balanced reproductive success under polygynandry, where both sexes mate multiply. Using 4 years of microsatellite DNA analyses of paternity and known maternity, we investigated variation in reproductive success of Columbian ground squirrels, Urocitellus columbianus (Ord, 1815); a species with multiple mating by both sexes and multiple paternity of litters. We asked whether male reproductive success was more variable than that of females under this mating system. The overall percentage of confirmed paternity was 61.4% of 339 offspring. The mean rate of multiple paternity in litters with known fathers was 72.4% (n = 29 litters). Estimated mean reproductive success of males (10.27 offspring) was about thrice that of females (3.11 offspring). Even after this difference was taken into account statistically, males were about three times as variable in reproductive success as females (coefficients of variation = 77.84% and 26.74%, respectively). The Bateman gradient (regression slope of offspring production on number of successful mates) was significantly greater for males (βM = 1.44) than females (βF = 0.28). Thus, under a polygynandrous mating system, males exhibited greater variation in reproductive success than females.
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Affiliation(s)
- Philip H. Jones
- Department of Microbiology, College of Medicine, University of Iowa, Iowa City, IA 52246, USA
- Department of Biological Sciences, Auburn University, 331 Funchess Hall, Auburn, AL 36849, USA
| | - Jeffrey L. Van Zant
- Department of Biological Sciences, Auburn University, 331 Funchess Hall, Auburn, AL 36849, USA
- Department of Biology, Hillsdale College, 33 East College Street, Hillsdale, MI 49242, USA
| | - F. Stephen Dobson
- Department of Biological Sciences, Auburn University, 331 Funchess Hall, Auburn, AL 36849, USA
- Centre d’Ecologie Fonctionnelle et Evolutive, Centre National de la Recherche Scientifique, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
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11
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Ben Slimen H, Gedeon CI, Hoffmann IE, Suchentrunk F. Dwindling genetic diversity in European ground squirrels? Mamm Biol 2012. [DOI: 10.1016/j.mambio.2011.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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OLSON LE, BLUMSTEIN DT, POLLINGER JR, WAYNE RK. No evidence of inbreeding avoidance despite demonstrated survival costs in a polygynous rodent. Mol Ecol 2011; 21:562-71. [DOI: 10.1111/j.1365-294x.2011.05389.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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13
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Deltamethrin flea-control preserves genetic variability of black-tailed prairie dogs during a plague outbreak. CONSERV GENET 2011. [DOI: 10.1007/s10592-011-0275-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Rocke TE, Williamson J, Cobble KR, Busch JD, Antolin MF, Wagner DM. Resistance to plague among black-tailed prairie dog populations. Vector Borne Zoonotic Dis 2011; 12:111-6. [PMID: 21923261 DOI: 10.1089/vbz.2011.0602] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
In some rodent species frequently exposed to plague outbreaks caused by Yersinia pestis, resistance to the disease has evolved as a population trait. As a first step in determining if plague resistance has developed in black-tailed prairie dogs (Cynomys ludovicianus), animals captured from colonies in a plague-free region (South Dakota) and two plague-endemic regions (Colorado and Texas) were challenged with Y. pestis at one of three doses (2.5, 250, or 2500 mouse LD50s). South Dakota prairie dogs were far more susceptible to plague than Colorado and Texas prairie dogs (p<0.001), with a mortality rate of nearly 100% over all doses. Colorado and Texas prairie dogs were quite similar in their response, with overall survival rates of 50% and 60%, respectively. Prairie dogs from these states were heterogeneous in their response, with some animals dying at the lowest dose (37% and 20%, respectively) and some surviving even at the highest dose (29% and 40%, respectively). Microsatellite analysis revealed that all three groups were distinct genetically, but further studies are needed to establish a genetic basis for the observed differences in plague resistance.
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Affiliation(s)
- Tonie E Rocke
- U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA.
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16
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Nesterova AP, Raveh S, Manno TG, Coltman DW, Dobson FS. Premating behavioral tactics of Columbian ground squirrels. J Mammal 2011. [DOI: 10.1644/10-mamm-a-198.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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17
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Sociality, Bateman’s gradients, and the polygynandrous genetic mating system of round-tailed ground squirrels (Xerospermophilus tereticaudus). Behav Ecol Sociobiol 2011. [DOI: 10.1007/s00265-011-1189-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Bell KC, Matocq MD. Regional genetic subdivision in the Mohave ground squirrel: evidence of historic isolation and ongoing connectivity in a Mojave Desert endemic. Anim Conserv 2011. [DOI: 10.1111/j.1469-1795.2011.00435.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Raveh S, Heg D, Viblanc VA, Coltman DW, Gorrell JC, Dobson FS, Balmer A, Neuhaus P. Male reproductive tactics to increase paternity in the polygynandrous Columbian ground squirrel (Urocitellus columbianus). Behav Ecol Sociobiol 2010. [DOI: 10.1007/s00265-010-1071-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Bottlenecks and rescue effects in a fluctuating population of golden-mantled ground squirrels (Spermophilus lateralis). CONSERV GENET 2010. [DOI: 10.1007/s10592-010-0139-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Olson LE, Blumstein DT. Applying the coalitionary-traits metric: sociality without cooperation in male yellow-bellied marmots. Behav Ecol 2010. [DOI: 10.1093/beheco/arq094] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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JONES PHILIPH, BRITTEN HUGHB. The absence of concordant population genetic structure in the black-tailed prairie dog and the flea, Oropsylla hirsuta, with implications for the spread of Yersinia pestis. Mol Ecol 2010; 19:2038-49. [DOI: 10.1111/j.1365-294x.2010.04634.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Raveh S, Heg D, Dobson FS, Coltman DW, Gorrell JC, Balmer A, Neuhaus P. Mating order and reproductive success in male Columbian ground squirrels (Urocitellus columbianus). Behav Ecol 2010. [DOI: 10.1093/beheco/arq004] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Blumstein DT, Lea AJ, Olson LE, Martin JGA. Heritability of anti-predatory traits: vigilance and locomotor performance in marmots. J Evol Biol 2010; 23:879-87. [PMID: 20298440 DOI: 10.1111/j.1420-9101.2010.01967.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Animals must allocate some proportion of their time to detecting predators. In birds and mammals, such anti-predator vigilance has been well studied, and we know that it may be influenced by a variety of intrinsic and extrinsic factors. Despite hundreds of studies focusing on vigilance and suggestions that there are individual differences in vigilance, there have been no prior studies examining its heritability in the field. Here, we present one of the first reports of (additive) genetic variation in vigilance. Using a restricted maximum likelihood procedure, we found that, in yellow-bellied marmots (Marmota flaviventris), the heritability of locomotor ability (h(2)=0.21), and especially vigilance (h(2) = 0.08), is low. These modest heritability estimates suggest great environmental variation or a history of directional selection eliminating genetic variation in these traits. We also found a significant phenotypic (r(P) = -0.09 +/- 0.04, P = 0.024) and a substantial, but not significant, genetic correlation (r(A) = -0.57 +/- 0.28, P = 0.082) between the two traits (slower animals are less vigilant while foraging). We found no evidence of differential survival or longevity associated with particular phenotypes of either trait. The genetic correlation may persist because of environmental heterogeneity and genotype-by-environment interactions maintaining the correlation, or because there are two ways to solve the problem of foraging in exposed areas: be very vigilant and rely on early detection coupled with speed to escape, or reduce vigilance to minimize time spent in an exposed location. Both strategies seem to be equally successful, and this 'locomotor ability-wariness' syndrome may therefore allow slow animals to compensate behaviourally for their impaired locomotor ability.
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Affiliation(s)
- D T Blumstein
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095-1606, USA.
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27
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Genetic relatedness and space use in a behaviorally flexible species of marmot, the woodchuck (Marmota monax). Behav Ecol Sociobiol 2009. [DOI: 10.1007/s00265-009-0726-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Verdolin JL, Slobodchikoff CN. Resources, not Kinship, Determine Social Patterning in the Territorial Gunnison’s prairie Dog (Cynomys gunnisoni). Ethology 2009. [DOI: 10.1111/j.1439-0310.2008.01590.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Kruckenhauser L, Bryant AA, Griffin SC, Amish SJ, Pinsker W. Patterns of within and between-colony microsatellite variation in the endangered Vancouver Island marmot (Marmota vancouverensis): implications for conservation. CONSERV GENET 2008. [DOI: 10.1007/s10592-008-9779-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Kruckenhauser L, Pinsker W. Microsatellite variation in autochthonous and introduced populations of the Alpine marmot (Marmota marmota) along a European west-east transect. J ZOOL SYST EVOL RES 2008. [DOI: 10.1111/j.1439-0469.2004.00231.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Kyle CJ, Karels TJ, Davis CS, Mebs S, Clark B, Strobeck C, Hik DS. Social structure and facultative mating systems of hoary marmots (Marmota caligata). Mol Ecol 2007; 16:1245-55. [PMID: 17391410 DOI: 10.1111/j.1365-294x.2006.03211.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mate-choice theory predicts different optimal mating systems depending on resource availability and habitat stability. Regions with limited resources are thought to promote monogamy. We tested predictions of monogamy in a social rodent, the hoary marmot (Marmota caligata), at the northern climatic extreme of its distribution. Mating systems, social structure and genetic relationships were investigated within and among neighbouring colonies of marmots within a 4 km(2) valley near Kluane National Park, Yukon, Canada, using 21 microsatellite loci. While both monogamous and polygynous populations of hoary marmots have been observed in the southern reaches of this species' range; northern populations of this species are thought to be predominantly monogamous. Contrary to previous studies, we did not find northern hoary marmot social groups to be predominantly monogamous; rather, the mating system seemed to be facultative, varying between monogamy and polygyny within, as well as among, social groups. These findings reveal that the mating systems within colonies of this species are more flexible than previously thought, potentially reflecting local variation in resource availability.
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Affiliation(s)
- C J Kyle
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
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32
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Genetic diversity and population divergence in fragmented habitats: Conservation of Idaho ground squirrels. CONSERV GENET 2005. [DOI: 10.1007/s10592-005-9035-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Floyd CH, Van Vuren DH, May B. MARMOTS ON GREAT BASIN MOUNTAINTOPS: USING GENETICS TO TEST A BIOGEOGRAPHIC PARADIGM. Ecology 2005. [DOI: 10.1890/04-1227] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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KYLE CJ, KARELS TJ, CLARK B, STROBECK C, HIK DS, DAVIS CS. Isolation and characterization of microsatellite markers in hoary marmots (Marmota caligata). ACTA ACUST UNITED AC 2004. [DOI: 10.1111/j.1471-8286.2004.00810.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Painter JN, Selonen V, Hanski IK. Microsatellite loci for the Siberian flying squirrel, Pteromys volans. ACTA ACUST UNITED AC 2004. [DOI: 10.1111/j.1471-8286.2004.00588.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Haynie ML, Van Den Bussche RA, Hoogland JL, Gilbert DA. PARENTAGE, MULTIPLE PATERNITY, AND BREEDING SUCCESS IN GUNNISON'S AND UTAH PRAIRIE DOGS. J Mammal 2003. [DOI: 10.1644/brb-109] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abstract
We analyze published data from 592 AC microsatellite loci from 98 species in five vertebrate classes including fish, reptiles, amphibians, birds, and mammals. We use these data to address nine major questions about microsatellite evolution. First, we find that larger genomes do not have more microsatellite loci and therefore reject the hypothesis that microsatellites function primarily to package DNA into chromosomes. Second, we confirm that microsatellite loci are relatively rare in avian genomes, but reject the hypothesis that this is due to physical constraints imposed by flight. Third, we find that microsatellite variation differs among species within classes, possibly relating to population dynamics. Fourth, we reject the hypothesis that microsatellite structure (length, number of alleles, allele dispersion, range in allele sizes) differs between poikilotherms and homeotherms. The difference is found only in fish, which have longer microsatellites and more alleles than the other classes. Fifth, we find that the range in microsatellite allele size at a locus is largely due to the number of alleles and secondarily to allele dispersion. Sixth, length is a major factor influencing mutation rate. Seventh, there is a directional mutation toward an increase in microsatellite length. Eighth, at the species level, microsatellite and allozyme heterozygosity covary and therefore inferences based on large-scale studies of allozyme variation may also reflect microsatellite genetic diversity. Finally, published microsatellite loci (isolated using conventional hybridization methods) provide a biased estimate of the actual mean repeat length of microsatellites in the genome.
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Affiliation(s)
- B D Neff
- Department of Zoology, University of Western Ontario, London, Canada.
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Schulte-Hostedde AI, Gibbs HL, Millar JS. Microsatellite DNA loci suitable for parentage analysis in the yellow-pine chipmunk (Tamias amoenus). Mol Ecol 2000; 9:2180-1. [PMID: 11123642 DOI: 10.1046/j.1365-294x.2000.105314.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- A I Schulte-Hostedde
- Ecology and Evolution Group, Department of Zoology, University of Western Ontario, London, Ontario, Canada, N6A 5B7
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Zittlau KA, Davis CS, Strobeck C. Characterization of microsatellite loci in northern flying squirrels (Glaucomys sabrinus). Mol Ecol 2000; 9:826-7. [PMID: 10849303 DOI: 10.1046/j.1365-294x.2000.00915-5.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- K A Zittlau
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9.
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