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  • 1
    Electronic Resource
    Electronic Resource
    Cytologie comparée des Muridae. L'origine des Ellobii (1956)
    Springer
    Cellular and molecular life sciences 12 (1956), S. 337-338 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary (1) The present paper deals with the chromosomial cytology of 11 species and underspecies ofMuridae. (2) The diploïd number being the same (2N=42), there are striking differences between two species ofBandicota, B. indica showing about 20 big metacentric chromosomes which are lackingB. bengalensis. (3)Meriones blackleri is characterized by 72 chromosomes, the species previously described possessing either 44 or 60 elements. (4) The study ofPhenacomys ungava confirms the view that 56 (54) is the primitive number in theMicroti. There is an interesting parallelism between the morphological and the cytological data. (5) A missing link betweenMicroti andEllobii has been found inMicrotus oregoni which possesses 17 chromosomes, its digamety belonging to the typeX-O, X-X. (6) Owing to the fact thatM. oregoni is more fossorial than the otherMicrotus, it is a morphological intermediate betweenMicroti andEllobii. (7) The genusChilotus (Baird) is also fully valid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02165337
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  • 2
    Electronic Resource
    Electronic Resource
    L'évolution de la formule chromosomiale chez les Vertébrés (1945)
    Springer
    Cellular and molecular life sciences 1 (1945), S. 78-86 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02156807
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  • 3
    Electronic Resource
    Electronic Resource
    Un nouveau type de chromosomes sexuels chez un mammifère (1954)
    Springer
    Cellular and molecular life sciences 10 (1954), S. 18-18 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Ellobius lutescens, a vole, has a diploid number of 17 in both sexes. This was determined in the testes (♂) and in the bone-marrow (♀). The number is the lowest ever seen in an eutherian mammal and falls wide of the formulae of the otherMicrotinae. Unless the myeloblastic cell line eliminates oneX-chromosome in the female, which seems very unlikely, we have to deal with an entirely new type of sex-determination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02158330
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  • 4
    Electronic Resource
    Electronic Resource
    La question des hétérochromosomes chez les Sauropsidés. I. Reptiles (1956)
    Springer
    Cellular and molecular life sciences 12 (1956), S. 53-55 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In contradiction to some Japanese authors (Oguma, Makino, Nakamura), we are unable to find any difference in the chromosome sets of the male and female ofLacerta vivipara (2N = 36). In a saurian, where the analysis is very easy (Chamaeleon bitaeniatus), there are, without the smallest doubt, 24 chromosomes in both sexes (20M + 4m). The evidence of a female heterogamety in turtles is by no means satisfying.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02164673
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  • 5
    Electronic Resource
    Electronic Resource
    Un cas nouveau de polymorphisme chromosomique intraspécifique chez un Mammifère (Leggada minutoides Smith. Rodentia-Muridae) (1963)
    Springer
    Cellular and molecular life sciences 19 (1963), S. 145-147 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The African mouse,Leggada minutoides Smith, shows a chromosomal polymorphism: a first male (Coast of Ivory) had 32 chromosomes; theX is a big metacentric, theY a big submetacentric and the autosomes are acrocentric, with the single exception of the biggest pair which associates two submetacentric elements. By a second male (Congo), 33 chromosomes are found, amongst them only one big submetacentric autosome. This statement and the odd diploid number shows clearly that we have to deal with an heterozygot, two acrocentric elements representing respectively one arm of the submetacentric autosome. Now, we may be sure that this male belongs to a population built of individuals having 32, 33 and 34 chromosomes. The origin of such a population must have arisen in a primitive population where 34 was the diploid number, through a centric fusion. Such cases pose the question of the balanced chromosomial polymorphism and of the adaptative value of each formula6.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02171601
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  • 6
    Electronic Resource
    Electronic Resource
    Démonstration du caractère géographique de la parthénogénèse deSaga pedo Pallas et de sa polyploïdie, par comparaison avec les espèces bisexuéesS. ephippigera Fisch. etS. gracilipes Uvar (1946)
    Springer
    Cellular and molecular life sciences 2 (1946), S. 260-261 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The males of two species of Palestine,Saga ephippigera Fisch. andS. gracilipes Uvar have respectively 33 and 31 chromosomes in the diploid state.S. pedo Pallas, a parthenogenetic thelytoc species largely distributed in Europe, has 68 chromosomes and probably represents a tetraploid. The cells of the three species have identical dimensions and the polyploidS. pedo is even the smallest in size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02156567
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  • 7
    Electronic Resource
    Electronic Resource
    Chromosomes sexuels géants chez un Campagnol,Microtus agrestis L (1949)
    Springer
    Cellular and molecular life sciences 5 (1949), S. 72-72 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the vole,Microtus agrestis L., there are 46 chromosomes as in the twin-species,M. arvalis Pallas. In striking contrast to this last animal, the sexual chromosomes, studied in the last spermatogonial divisions, are of gigantic size (X metacentric = 8–9 µ;Y acrocentric = 5–6 µ). The identification of theX is proved by the analysis of marrow-smears of the female. It is expected that several problems concerning the mode of attachment and the type of association betweenX andY can be resolved by the study of that most interesting rodent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02153730
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  • 8
    Electronic Resource
    Electronic Resource
    L'évolution de la formule chromosomiale chez les Vertébrés (1945)
    Springer
    Cellular and molecular life sciences 1 (1945), S. 50-56 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02153623
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  • 9
    Electronic Resource
    Electronic Resource
    Un cas nouveau de chromosomes sexuels multiples dans le genreGerbillus (Rodential - Muridae - Gerbillinae) (1954)
    Springer
    Cellular and molecular life sciences 10 (1954), S. 464-465 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 4 species of the genusGerbillus have been studied by the author; two belong to the usual schemeX-Y, X-X, two are provided with multiple sex-chromosomes.Gerbillus gerbillus ♂ shows at the first metaphase a sexual trivalentX-Y 1 Y 2 and 20 autosomal bivalents. The diploïd number is 43. As expected, there is two types of metaphases II, with 21 and 22 elements respectively. The diploid number of the ♀ is 42 (twoX).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02170402
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  • 10
    Electronic Resource
    Electronic Resource
    Un nouveau type de détermination chromosomique du sexe chez les mammifèresEllobius lutescens Th. etMicrotus (Chilotus) oregoni Bachm. (Muridés-Microtinés) (1958)
    Springer
    Cellular and molecular life sciences 14 (1958), S. 240-241 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary (1)Ellobius lutescens andMicrotus oregoni show the same type of sex-chromosomes. The diploid number is odd in both sexes, seventeen. (2) The odd element ofEllobius is morphologically alike in the male and in the female. InM. oregoni, the odd element of the male is acrocentric, that of the female metacentric. (3) Following a hypothesis ofWhite, it seems very probable that the heterochromosome of the male is built of the primitiveY (short arm) and the primitiveX (long arm) linked together. In the female of the same species (M. oregoni), the sex-chromosome represents both theX fused together. (4) Only the half of the Zygotes may develope, the other half being lethal. (5) The close kinship betweenEllobius andM. oregoni is certain, a parallel evolution appearing as highly improbable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02159178
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