
%0 Journal Article
%A Yunis, E 
%A Ramirez, E 
%A Cayon, J 
%A Hernandez, J 
%T The chromosomes of the Didelphids Caluromys Lanatus Illiger and Chironectes minimus Zimmerman (Marsupialia : Didelphidae)
%J Australian Journal of Zoology
%D 1972/09/01
%V 20
%N 3
%P 265-269
%K 
%R https://doi.org/10.1071/ZO9720265
%U https://www.publish.csiro.au/paper/ZO9720265 
%X A chromosome study of the didelphiids C. lanatus and Ch. minimus is presented. The karyotype of C. lanatus is very similar to that of Marmosa robinsoni but differs, in so . far as the X chromosome is concerned, from that of C. derbianus. As an explanation for the karyologic difference between the two Caluromys species we postulate a peri- centric inversion of the X chromosome passing from the acrocentric form of C. derbianus to the submetacentric of C. lanatus. The chromosomes of Ch. minimus (2n = 22) are all acrocentric and have a strong similarity to those described in the genera Didelphis and Philander, but the sexual chromosomes are larger and have an XY form of sexual complement. 
