首页> 外文期刊>Bulletin de la Societe Zoologique de France >ANALYSE CARYOLOGIQUE DE QUATRE ESPECES DE GERBILLES (RONGEURS, GERBILLINAE) DE TUNISIE
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ANALYSE CARYOLOGIQUE DE QUATRE ESPECES DE GERBILLES (RONGEURS, GERBILLINAE) DE TUNISIE

机译:突尼斯的四种沙鼠(啮齿类动物,沙丁鱼)的种类学分析

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摘要

In Gerbils, morphological criteria on their own are sometimes insufficient to allow the distinction of neighboring species. In this note, the chromosomal furniture's of the 4 following species are determined: Gerbillus latastei, G. tarabuli, G. campestris and Gerbillus simoni. The chromosomal criteria, including the number, size and shape of chromosomes, indicate a specific variation in diploid number and a chromosomal polymorphism within and between populations of certain species. Heterochromosomes are unequal in the four species, X being of a larger size than Y. Gerbillus tarabuli, the largest gerbil in Tunisia, possesses the most reduced chromosome number, having 40 chromosomes with a NFa = 74. This chromosomal complement is shown by other populations of the Maghreb. The karyotype of Gerbillus latastei (2n = 74) presents a polymorphism in relation to areas of distribution and the sex of animals. In includes a great number of acrocentrics and an important variability of the NFa (from 94 to 97), which can be assigned to pericentric
机译:在沙鼠中,仅靠形态学标准有时不足以区分相邻物种。在此注释中,确定了以下4个物种的染色体家具:拉氏Gerbillus latastei,G。tarabuli,G。campestris和Gerbillus simoni。染色体标准(包括染色体的数量,大小和形状)指示某些物种种群内部和种群之间的二倍体数目和染色体多态性的特定变化。在这四个物种中,异型染色体是不相等的,X的大小比Y大。突尼斯最大的沙鼠tarbuli gerbillus tarabuli拥有最多的减少的染色体数目,具有40条NFa = 74的染色体。马格里布的。 latastei gerbillus(2n = 74)的核型表现出与分布区域和动物性别有关的多态性。在其中包括大量的肢端中心和重要的NFa变异性(从94到97),可以将其分配给外周中心

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