Coat genetic markers of the domestic cat Felis catus (Felidae) from southwestern Colombia (original) (raw)
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Journal of Genetics, 2005
In this paper we identify new genetic profiles of eight Latin American cat populations. In addition, we combine data from the present study and previously published data on 70 other American and European populations to discuss (1) the points of introduction of mutant alleles for cat coat phenotypes from Europe into Latin America, (2) the heterozygosity levels at these loci in the current Latin American cat populations, (3) the level of genetic heterogeneity among Latin American cat populations, and how this compares with levels found in North American and European cat populations, and (4) how many different cat gene pools are currently present in Latin America. We also include in our purview historical records of human migrations from Europe to and within the Americas. Our analyses clearly support the view that the current genetic profiles and structuring of cat populations in Latin America can be largely explained by the historical migration patterns of humans.
Russian Journal of Genetics, 2002
Until the present moment, only a scarce number of Latin American domestic cat populations have been studied from a population genetic standpoint. For this reason, the cat populations of La Havana (Cuba), San José (Costa Rica), Bogotá and Ibagué (Colombia), Asunción (Paraguay), Santiago (Chile) and Buenos Aires (Argentina) were sampled for several coat genes. The results obtained were as follows: (1) there was a strong genetic resemblence between several Hispanic American cat populations (especially, those of Buenos Aires, San José and the two Colombian populations studied) and those from South Western United States (California, Texas and Colorado), which adds suport to the suspicion that these populations probably have a common origin; (2) The cat population of Santiago (Chile), contrarily to the other Hispanic American populations studied, showed a strong genetic resemblance with some Anglo North American populations; and (3) The I (long hair) and d(dilution) alleles showed systematic higher frequencies in the Hispanic American populations than those observed in Spain. Although the Hispanic American populations were not identical to the current Spanish populations (with the exception of Asuncion), this historic genetic experiment was very different to that found for the British populations and their overseas colonies.
Genetics and Molecular Biology, 2008
We used nine morphological genes to analyze cat populations from Mexico, the Dominican Republic, the Colombian, Brazilian and Peruvian Amazon, Bolivia and Brazil. Most populations were in Hardy-Weinberg equilibrium at the O locus. The highest allele frequencies so far detected at world level for alleles I (inhibitor) and L (long hair) were found at La Paz (Bolivia). The analyses revealed at least five cat gene pools in Latin America: These findings suggest that the current genetic distribution of cats in Latin America correlates with the colonization of the Americas during the XIV to XVIII centuries. Additionally, the cat populations of São Paulo, Rio de Janeiro and Manaus were sampled, to compare their 1996-2003 genetic profiles with those obtained in 1983. Generally, these genetic profiles seem temporally stable, which is important for comparing cat populations sampled in different years and decades.
Genetics and Molecular Biology, 1999
The phenotypic markers, coat color, pattern and hair length, of natural domestic cat populations observed in four cities (Barcelona, Catalonia; Palma Majorca, Balearic Islands; Rimini, Italy and Buenos Aires, Argentina) were studied at a microgeographical level. Various population genetics techniques revealed that the degree of genetic differentiation between populations of Felis catus within these cities is relatively low, when compared with that found between populations of other mammals. Two different levels of sampling were used. One was that of "natural" colonies of cat families living together in specific points within the cities, and the other referred to "artificial" subpopulations, or groups of colonies, inhabiting the same district within a city. For the two sampling levels, some of the results were identical: 1) little genic heterogeneity, 2) existence of panmixia, 3) similar levels of expected heterozygosity in all populations analyzed, 4) no spatial autocorrelation, with certain differentiation in the Buenos Aires population compared to the others, and 5) very high correlations between colonies and subpopulations with the first factors from a Q factor analysis. Nevertheless, other population genetic statistics were greatly affected by the differential choice of sampling level. This was the case for: 1) the amount of heterogeneity of the F ST and G ST statistics between the cities, which was greater at the subpopulation level than at colony level, 2) the existence of correlations between genic differentiation statistics and size variables at subpopulation level, but not at the colony level, and 3) the relationships between the genetic variables and the principal factors of the R factorial analysis. This suggests that care should be taken in the choice of the sampling unit, for inferences on population genetics to be valid at the microgeographical level.
Genetic microstructure in two spanish cat populations. I: genic diversity, gene flow and selection.
Genes & genetic systems, 2000
In a previous publication, we described some aspects of the microgenetic structure of two Spanish cat populations (in Barcelona and Alicante). In the present study, the possible existence of gametic disequilibrium and spatial genetic structure for these populations, at the coat colour pattern and length genes O, A, T, D, L, S and W, was analyzed. There was little gametic disequilibrium between pairs of these loci, despite certain pairs that showed significant systematic gametic disequilibrium (a-d and O-S), which appears to show the action of natural selection on domestic cat populations. Nevertheless, we believe that the major cause of the small amount of gametic disequilibrium found was probably a combination of gene drift and gene flow. The results obtained here were clearly in disagreement with those of , who concluded that epistatic selection was the cause of the gametic disequilibrium that he found in cat populations. We also found that although Hardy-Weinberg equilibrium could not be demonstrated, the gametic disequilibrium statistics were not affected by this fact, adding credence to the estimates obtained.
Journal of Genetics, 1997
The genetic structure of natural populations of the domestic cat was examined at the microgeographic level (in the Spanish city of Barcelona) and the macrogeographic level (in Catalonia in Spain, and in upper midwestern USA) using frequency data for seven monogenic morphological traits. At the microgeographic IeveI in the city of Barcelona there was no evidence for nonrandom mating within colonies, and estimates of between-colony gene flow were quite high. At the macrogeographic level, the populations fl'om Catalonia and upper midwestern USA differed in two major respects: (i) The Catalan populations were in reasonably good agreement with expectations of Hardy-Weinberg equilibrium while the North American populations showed some evidence of the Wahlund effect (overall heterozygote deficiency indicating population substructuring). (ii) In the Catalan populations, approximately fifty per cent of the genetic differentiation between populations could be explained by geographical separation while in North America only four per cent of the total differentiation was attributable to geographical distance.
Acta Theriologica, 1999
To determine allele frequencies, surveys of coat phenotypes of domestic cats were conducted in Madeira Island (Madeira archipelago) and Flores Island (Azores archi pelago). The samples fitted a 1:1 sex ratio and panmitic populations were assumed based on the analysis of the O locus. The genetic profiles were compared to those from other Atlantic littoral populations and a marked deviation was detected at Flores Island referring to very high values of d, W and I alleles. The differences were interpreted as indicating that cats from Flores may reflect the condition of continental cats in former times. The Madeira population is more similar to Western Europe probably due to more close and continual contact in recent years.
Genetics Selection Evolution, 1994
A detailed study of 7 cat populations (Felis silvestris catus) in the 3 principal Balearic islands has been carried out. These populations are Mahon (474 cats), Villacarlos (226 cats), Mercadal and Alayor (104 cats) and Ciudadela (510 cats) in Minorca, Palma Majorca (475 cats) in Majorca and Ibiza city (210 cats) and San Antonio (63 cats) in Ibiza. The gene frequencies derived from the phenotypic frequencies of a number of loci coding for coat colour and pattern, hair length and one skeleton anomaly were studied with the following implied mutant allele: 0 (Orange; sex-linked allele); a (Non-agouti); t b (Blotched tabby); d (Dilution); l (Long hair); S (White spotting); W (Dominant white); c' (Siamese); and M (Manx). The range of frequency values for each of the loci studied is the following
Ruiz-García, M. & Shostell, J.M. (eds). Molecular Population Genetics, Evolutionary Biology and Biological Conservation of Neotropical Carnivores. , 2013
In this chapter, we show complementary results to the works of , on the genetic structure and phylogenetics of two small Andean cats, the Pampas cat (Leopardus pajeros) and the Andean mountain cat (Leopardus jacobita). In the present study we increased the samples sizes to 235 individuals for L. pajeros and 115 individuals for L. jacobita, effectively making these samples the largest to date for these two species. We analyzed five microsatellites for L. pajeros and seven microsatellites for For correspondence: mruizgar@yahoo.es, mruiz@javeriana.edu.co.
Russian Journal of Genetics: Applied Research, 2012
The genetic structure of Felis catus domestic cat populations was analyzed for the European con tinent, United States, and Canada, and it was established that the analyzed populations are divided into two clusters (groups), i.e., Western European-Northern Amercan and Eastern European. The gene pools of cats from Byelorussian and Russian cities are closely related, being of the same origin. The founder effect was revealed to influence the formation of the postwar St. Petersburg cat population.