CYTOGENETIC DATA ON TICKS
R. SANDHU *
Department of Zoology, Punjabi University, Patiala-147 002
V. L. SHARMA *
Department of Zoology, Punjabi University, Patiala-147 002
G. K. DOLLA *
Department of Zoology, Punjabi University, Patiala-147 002
*Author to whom correspondence should be addressed.
Abstract
Chromosomes of four species of Indian hard ticks have been studied. The diploid chromosome number in all the species is 21-22 with XO : XX sex determining mechanism. All chromosomes are acrocentric and sex chromosomes are the longest element in the complement. In the males, typical meiotic stages from diplotene through metaphase-II have been observed in most species. Only metaphase-I stages are found during female meiosis.