The Salivary Gland Chromosomes of Anopheles Ramsayi and its Relationship with Anopheles Stephensi (Culicidae: Diptera)

Abstract

The salivary gland chromosomes of Anopheles ramsayi, a wild strain from the forest inhabitations of North-east India (Gauhati, Assam), are described and a standard chromosome map is given. The diploid karyotype and the banding pattern of the salivary chromosomes are compared with that of Anopheles stephensi stephensi. The metaphase karyotype is a modified “gambiae-type.” The salivary chromosome arms 2R, 2L and 3R have the maximum similarities between A. ramsayi and A. stephensi stephensi, whereas X-chromosome and autosomal arm 3L are completely independent in their banding pattern in A. ramsayi. The sum total of all the homologies suggest that in its phylogenetic relationship A. ramsayi is only distantly related to A. stephensi. © 1979, Japan Mendel Society, International Society of Cytology. All rights reserved.