Karyological study of Cicindelidia trifasciata (Coleoptera, Cicindelidae) from Cuba: Evidence of B chromosomes

Citation
Sjr. Proenca et al., Karyological study of Cicindelidia trifasciata (Coleoptera, Cicindelidae) from Cuba: Evidence of B chromosomes, GENET MOL B, 22(1), 1999, pp. 45-48
Citations number
19
Categorie Soggetti
Molecular Biology & Genetics
Journal title
GENETICS AND MOLECULAR BIOLOGY
ISSN journal
14154757 → ACNP
Volume
22
Issue
1
Year of publication
1999
Pages
45 - 48
Database
ISI
SICI code
1415-4757(199903)22:1<45:KSOCT(>2.0.ZU;2-O
Abstract
Metaphases from germinal tissue of eight males and seven females of Cicinde lidia trifasciata from Cuba were analyzed. The species karyotype does not f it the pattern described for Nearctic cicindelids (2n = 18 + XXY): it has 1 1 autosome pairs and a sex chromosome system of the X1X2X3Y/ X1X1X2X2X3X3 t ype, thus a diploid value of 2n = 26 in males and 2n = 28 in females. The f irst two autosome pairs were almost twice as large as the remaining chromos omes, and the sex elements were morphologically well differentiated. This p opulation was found to be polymorphic for supernumerary chromosomes at both the intraindividual and interindividual levels. An extra small B chromosom e was observed in all metaphases of one male (2n = 27), and every female sh owed metaphases with one to three small Bs, with a clearly higher frequency of cytotype 2n = 29.