A comparison of the salivary gland chromosomes of Anopheles eiseni and Anopheles peryassui

Abstract

The salivary gland chromosomes of many members of the subgenus Anopheles have been mapped, and their evolutionary relationships examined. The standard arrangements for two additional species Anopheles eiseni and Anopheles peryassui were proposed. There are two pairs of autosomes and a pair of sex chromosomes in each species. The X chromosome of An. eiseni is sub-metacentric. The X chromosome of An. peryassui is sub-telocentric. The two pairs of autosomes of each species are metacentric. There was one rarely occurring inversion found in the right arm of chromosome three in An. eiseni. The chromosomal banding patterns of the two species show similarities to each other most closely in the third pair of autosomes. The banding pattern of An. eiseni resembles that found in An. punctipennis, An. earlei, and An. aztecus most closely. The greatest degree of similarity of An. peryassui exist with An. punctipennies, An. perplexens and An. aztecus. These comparisons suggest a possible evolutionary relationship among the aforementioned species.