title: Cytogenetic studies of Calliphora vicina and Lucilia sericata (Diptera: Calliphoridae) from northwestern Egypt.
abstract: The blow fly, Calliphora vicina (Robineau-Desvoidy, 1830) and the green bottle fly, Lucilia sericata (Meigen, 1826) were collected from the north coast of Egypt. The karyotype of both flies was characterized by cytotaxonomical methods, including chromosome number, shape, relative length, arm ratio, centromeric index and designation. To quantify relative chromosome length, the percent of total haploid autosomal complement length (%TACL) for each autosome was calculated. The deploid number of chromosomes, of both flies, is 2n=12 where females have XX and males have XY sex determination mechanism. C. vicina have four metacentric autosomal pairs, with variable arm ratios, and one submetacentric pair. Both X & Y chromosomes are metacentric whereas X chromosome is the longest chromosome in the designation. The karyotype of L. sericata is characterized by the first autosome which is somewhat longer than all other chromosomes (%TACL=27.02). The autosomes of L. sericata are four metacentric pairs and one submetacentric pair. X & Y chromosomes are metacentric & submetacentric, respectively.
authors.affiliation: Department of Entomology, Faculty of Science, Cairo University, Giza, Egypt.
authors.forename: Ghada M
authors.initials: GM
authors.lastname: El-Bassiony
mesh_terms: D000818:Animals; D004175:Diptera / Q000235:genetics*; D004534:Egypt; D005260:Female; D007621:Karyotyping; D008297:Male; D011003:Ploidies; D014960:X Chromosome; D014998:Y Chromosome