Fr�quences g�niques chez le chat domestique, Felis catus, dans quatre communes rurales fran�aises

Pontier, Dominique

doi:10.1007/bf00123313

Cited by 7 publications

(6 citation statements)

References 13 publications

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“…The scarcity of these phenotypes in Polish populations establishes low frequencies of the sex-linked orange allele (0), all but one being under 0.10. Similar low values have been found in Rabat (O.O9) 13 , Lisbon (0.07), Carnac (0.08) 34 , Tours (0.06), Paris (0.06), Marseilles (0.08), Nice (0.06) 21 , Rome (0.09), Venice (0.06) l9 , Budapest (0.08) l0 , southern and northern Moravia (0.02 and 0.03, respectively) 37 , southern Sweden (O.O6) 30 , Ordzhonikidze (Ukraine) (0.03) 14 , Rostov on Don (0.07), Krasnodar (0.07) 7 , Armavir (0.04) 25 , Baku (0.09) 7 , Tabriz (0.06) and Shiraz (0.06) 28 . Thus, the Polish populations provide supporting evidence for the existence of three narrow, radiating corridors of low O incidence connecting parts of northwest Africa and western Europe, part of Scandinavia and southwest Asia through central Europe.…”

Section: Resultssupporting

confidence: 80%

Pelage mutant allele frequencies in domestic cat populations of Poland

Wagner

Wolsan

1987

Journal of Heredity

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To determine mutant allele frequencies, surveys of coat phenotypes of the domestic cat (Felis catus L.) were conducted from October 1982 to June 1985 in 23 urban and rural populations of Poland (N = 67-278). The seven gene loci studied included: sex-linked orange (O), agouti (A), tabby (T), full-color expression (D), long hair (L), piebald spotting (S), and dominant white (W). The mutant allele frequencies at these loci are: p(O) = 0-0.139, q(a) = 0.487-0.774, p(Ta) = 0, q(tb) = 0.132-0.451, q(d) = 0-0.332, q(l) = 0-0.220, p(S) = 0.242-0.620, and p(W) = 0. The coefficients of darkness estimated ranged from 0.51 to 0.75, showing no statistically significant differences between urban and rural populations. Of the gene loci studied, only A and S show such differences, with the incidence of alleles a and S being, respectively, significantly higher and lower for urban areas. The relatively great amount of genetic heterogeneity in the cat populations of Poland seems to reflect historical determinants. The Polish data are compared to those from Europe, northern Africa, and western Asia, and geographic patterns in distribution for all of the mutant alleles studied are described.

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Section: Resultssupporting

confidence: 80%

Pelage mutant allele frequencies in domestic cat populations of Poland

Wagner

Wolsan

1987

Journal of Heredity

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“…Pontier (1983) has recently shown that the urban-rural clines of Dreux (1978) are limited in France as a general phenomenon to the orange locus. Blumenberg & Lloyd (1980) showed significant positive correlations between the frequencies of a and t b and population density in the cat populations of the British Isles.…”

Section: Resultsmentioning

confidence: 99%

“…In Bordeaux, the frequencies of a and t b are lower than in the associated hinterland in contrast to the expectation of the urban-rural effect. Pontier (1983) has maintained that as more data have accumulated the gene frequency clines of Todd (1977) are no longer apparent in France. This problem is due to two related factors.…”

Section: Resultsmentioning

confidence: 99%

“…A study of domestic cats from the west coast of France is of value on three counts: (1) To supplement the studies of urban-rural effects most recently documented by Pontier (1983); (2) To establish a relevant sample from mainland France with which to compare the data obtained from French Canada (Lloyd, 1985); (3) To fill in a conspicuous gap in the cline maps of Europe (Todd, 1977), which were supported in this area by only a very small sample (N=41, Todd & Lloyd, 1984).…”

Section: Introductionmentioning

confidence: 99%

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Gene frequencies in the domestic cats (Felis catus) of urban and rural Bordeaux

Symonds

Lloyd²

1987

Genetica

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A survey was carried out of mutant allele frequencies at seven loci in the domestic cats of Bordeaux and rural areas between 50 and 140 km distant. The results support the suggestion of Pontier (1983) that urban rural dines are apparent at the orange locus, but not for non-agouti or blotched tabby. A 'triple centroid' curve smoothing technique was carried out on all the French populations surveyed so far. This is an attempt to reduce genetic and statistical noise and take account of standard errors of gene frequency estimates. The cline maps of Todd (1977), which included only ten French populations are thereby substantially supported by subsequently obtained data. There appears to be a striking affinity between the cats of Bordeaux and those of St. Pierre et Miquelon. This is the first demonstration of a connection between the cats of French Canada and those of mainland France. The origin of the cat populations of the main areas of French settlement in the St. Lawrence River valley remains unexplained.

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“…Le premier echantillon El provient de sondages effectues dans la region lyonnaise aupres de 1258 families humaines et regroupe 237 chattes (Legay et Chessel 1984). Le second E2 est issu de recensements exhaustifs realises ä l'echelle de communes rurales de l'Isere et du Card et concerne 152 chattes (Pontier 1983(Pontier , 1984 …”

Section: ) Materiel Et Methodeunclassified

Relation âge-fécondité dans les populations de chats domestiques, Felis catus

Legay¹,

Pontier²

1985

Mammalia

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The fertility of female cats was studied by age classes using data based on samples of two different origins. Some parameters which chracterize fertility, such as the average number of litters per year and the average number of kittens per year, differ according to the sample. However, the fertility variations with age of female cats follows the same pattern in the two populations under study. The changes are characterized by an increase in the number of litters per year following the first year of life, and then by progressive increase in the number of kittens per year, and finally by the inverse tendency after the age of seven years.Resume. -La fecondite des chattes a ete etudiee par classe d'äge sur des donnees provenant d'echantillons de deux origines differentes. Certains parametres caracterisant la fecondite, comme ie nombre moyen de portees et le nombre moyen de chatons par an, different entre les deux echantillons. Toutefois les variations de productivite des chattes avec Tage sont du meme ordre dans les deux populations etudiees ; cette evolution est caracterisee par une augmentation du nombre de portees par an apres la premiere annee, puis par une augmentation progressive du nombre de chatons par an, la tendance s'inversant apres 7 ans.

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Fr�quences g�niques chez le chat domestique, Felis catus, dans quatre communes rurales fran�aises

Cited by 7 publications

References 13 publications

Pelage mutant allele frequencies in domestic cat populations of Poland

Pelage mutant allele frequencies in domestic cat populations of Poland

Gene frequencies in the domestic cats (Felis catus) of urban and rural Bordeaux

Relation âge-fécondité dans les populations de chats domestiques, Felis catus

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