Fine-scale population structure and sex-biased dispersal in bobcats (Lynx rufus) from southern Illinois

Croteau, Emily K.; Heist, Edward J.; Nielsen, Clayton K.
June 2010
Canadian Journal of Zoology;Jun2010, Vol. 88 Issue 6, p536
Academic Journal
In mammal populations, the spatial and genetic structure can be affected by dispersal, philopatry, and relatedness. Bobcats (Lynx rufus (Schreber, 1777)) are thought to exhibit typical mammalian dispersal behaviour where males disperse and females are philopatric, potentially leading to higher relatedness among females compared with males. We used 10 microsatellite loci to examine population structure and sex-biased dispersal in 146 bobcats sampled in southern Illinois during 1993-2001 using population genetic descriptive statistics, a Bayesian clustering algorithm, relatedness (rxy), and autocorrelation analyses. A randomization test demonstrated that female dyads had significantly higher rxy values with respect to randomly selected dyads (rxy = 0.093 ± 0.222, P = 0.012) and spatial autocorrelation analyses determined that females in close proximity (<5 km) had a high probability of being related (P = 0.001). Conversely, rxy values for males were not different from the null distribution (rxy = 0.019 ± 0.122, P = 0.3158) and no significant relationships were found with spatial autocorrelation analysis. Additionally, it was demonstrated that bobcats in southern Illinois approximated a panmictic population with no obvious barriers to gene flow. The pattern of relatedness observed in this study confirmed that females were philopatric and males dispersed, corroborating existing observational data for this species. Dans les populations de mammifères, les structures spatiales et génétiques peuvent être affectées par la dispersion, la philopatrie et la consanguinité. On pense que les lynx roux (Lynx rufus (Schreber, 1777)) possèdent un comportement de dispersion typique des mammifères dans lequel les mâles se dispersent et les femelles sont philopatriques, ce qui entraîne potentiellement une plus forte parenté entre les femelles qu’entre les mâles. Nous analysons 10 locus microsatellites afin d’étudier la structure de population et la dispersion variable en fonction du sexe chez 146 lynx roux échantillonnés dans le sud de l’Illinois en 1993-2001; nous utilisons des statistiques génétiques descriptives, un algorithme bayésien de groupement et des analyses de parenté (rxy) et d’autocorrélation. Un test de randomisation montre que les dyades femelles ont des valeurs significativement plus élevées de rxy par rapport aux dyades choisies au hasard (rxy = 0,093 ± 0,222, P = 0,012) et les analyses d’autocorrélation spatiale montrent que les femelles rapprochées (<5 km) ont une forte probabilité d’être parentes (P = 0,001). À l’inverse, les valeurs de rxy des mâles ne diffèrent pas de celles d’une distribution nulle (rxy = 0,019 ± 0,122, P = 0,3158) et l’analyse d’autocorrélation spatiale ne révèle aucune relation significative. De plus, nous démontrons que les lynx roux du sud de l’Illinois forment presque une population panmixique sans barrière évidente au flux génique. Le patron de parenté observé dans notre étude confirme que les femelles sont philopatriques et que les mâles se dispersent, ce qui corrobore les observations antérieures faites sur cette espèce.


Related Articles

  • Parturition site selection in moose (Alces alces): evidence for social structure. COLSON, KEVIN E.; WHITE, KEVIN S.; HUNDERTMARK, KRIS J. // Journal of Mammalogy;Jun2016, Vol. 97 Issue 3, p788 

    Female natal philopatry has often been implicated as an important factor in moose (Alces alces) home range formation, with many populations showing behavioral evidence of sympatric home ranges among related individuals. However, previous genetic studies have failed to detect genetic...

  • Aberrant Resting-State Corticostriatal Functional Connectivity in Cirrhotic Patients with Hyperintense Globus Pallidus on T1-Weighted MR Imaging. Xi-Qi Zhu; Hua-Jun Chen; Yu Wang; Ying Cui; Gao-Jun Teng // PLoS ONE;Nov2012, Vol. 7 Issue 11, Special section p1 

    Neurobiological and neuroimaging studies have emphasized the structural and functional alterations in the striatum of cirrhotic patients, but alterations in the functional connections between the striatum and other brain regions have not yet been explored. Of note, manganese accumulation in the...

  • Natal Dispersal of Snowshoe Hares During a Cyclic Population Increase. Gillis, Elizabeth A.; Krebs, Charles J. // Journal of Mammalogy;Aug99, Vol. 80 Issue 3, p933 

    Presents a study on the natal dispersal of snowshoe hares during the increase phase of a population cycle. Materials and methods; Results; Discussion.

  • Cooperative Breeding and Long-Distance Dispersal: A Test Using Vagrant Records. Rusk, Caroline L.; Walters, Eric L.; Koenig, Walter D. // PLoS ONE;Mar2013, Vol. 8 Issue 3, p1 

    Cooperative breeding is generally associated with increased philopatry and sedentariness, presumably because short-distance dispersal facilitates the maintenance of kin groups. There are, however, few data on long-distance dispersal in cooperative breeders—the variable likely to be...

  • Parallel Markov chain Monte Carlo - bridging the gap to high-performance Bayesian computation in animal breeding and genetics. Xiao-Lin Wu; Chuanyu Sun; Beissinger, Timothy M.; Rosa, Guilherme J. M.; Weigel, Kent A.; de Leon Gatti, Natalia; Gianola, Daniel // Genetics Selection Evolution;Sep2012, Vol. 44 Issue 9, p1 

    Background: Most Bayesian models for the analysis of complex traits are not analytically tractable and inferences are based on computationally intensive techniques. This is true of Bayesian models for genome-enabled selection, which uses whole-genome molecular data to predict the genetic merit...

  • Analyzing 2D gel images using a two-component empirical bayes model.  // BMC Bioinformatics;2011 Supplement 10, Vol. 12 Issue Suppl 10, p433 

    The article reports on a study that analyzes two dimensional (2D) gel images via a two-component empirical Bayes (EB) model. It states EB models have been widely discussed for large-scale hypothesis testing and applied in the context of genomic data. It proposes to estimate the mixture and null...

  • Extraction of Genetic Networks (GN) Using Static Bayesian Belief Networks From Genome-Wide Temporal Microarray Data. Kumuthini, Judit // BMC Bioinformatics;2005 Supplement 3, Vol. 6, pS8 

    A conference paper on the extraction of genetic networks (GN) is presented. GN is extracted using static Bayesian belief networks from genome-wide temporal microarray data. Gene Regulatory Network is extracted using the Taboo and taboo order algorithms from temporal expression data for 4000...

  • Population Structure as Revealed by mtDNA and Microsatellites in Northern Fur Seals, Callorhinus ursinus, throughout Their Range. Dickerson, Bobette R.; Ream, Rolf R.; Vignieri, Sacha N.; Bentzen, Paul // PLoS ONE;2010, Vol. 5 Issue 5, p1 

    Background: The northern fur seal (Callorhinus ursinus; NFS) is a widely distributed pinniped that has been shown to exhibit a high degree of philopatry to islands, breeding areas on an island, and even to specific segments of breeding areas. This level of philopatry could conceivably lead to...

  • Population structure and dispersal of wolves in the Canadian Rocky Mountains. CULLINGHAM, CATHERINE I.; THIESSEN, CONRAD D.; DEROCHER, ANDREW E.; PAQUET, PAUL C.; MILLER, JOSHUA M.; HAMILTON, JILL A.; COLTMAN, DAVID W. // Journal of Mammalogy;Jun2016, Vol. 97 Issue 3, p839 

    In the Canadian Rocky Mountains, the gray wolf (Canis lupus) has experienced range contractions and expansions, which can greatly affect pack stability as well as population structure. In addition, this area has a highly heterogeneous landscape that may form barriers to dispersal. To understand...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics