. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Polyploidy in bisexual Lepidoptera 321 a o o <D O o <u "o U o OJO I O £ 00 O U m. n=30 from n=27 to n=30 m. n=29 from n=28 to n=57 m. n=29 from a=29 to n=30 m. n=29 from n=ll to n=30 n=? n=?. Fig. 8: Scheme of phylogenetic relations (after Sinev 1992) and chromosome number distribu- tion in gelechioid moths, n— haploid number of chromosomes; m. n. — modal number of chromosomes; from to — range of interspecific variability of chromosome number. e
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Polyploidy in bisexual Lepidoptera 321 a o o <D O o <u "o U o OJO I O £ 00 O U m. n=30 from n=27 to n=30 m. n=29 from n=28 to n=57 m. n=29 from a=29 to n=30 m. n=29 from n=ll to n=30 n=? n=?. Fig. 8: Scheme of phylogenetic relations (after Sinev 1992) and chromosome number distribu- tion in gelechioid moths, n— haploid number of chromosomes; m. n. — modal number of chromosomes; from to — range of interspecific variability of chromosome number. exactly doubled (2n—1=57). Therefore, a decrease of bivalent sizes does not take place. The decrease in bivalent numbers if compared to the theoretical 2n = 58 is easy to explain by the allopolyploid origin of high-n species (see Discussion: Hypothetical scheme). The polyploidy hypothesis is also in agreement with the similarity of the karyotype structure in two high-n species: C spineUa and C lutipenella (n = 57). In the complements of both species on large bivalent distinctively stands out at the stage of the first metaphase of spermatogenesis, approximately twice as large as the second one, the other bivalents forming a smoothly descending size series. These two species are not closely related. In the system of Cäpuse (1973) they have even been referred to two different genera. Therefore, both karyotypes have probably evolved indepen- dently from low chromosome numbers, typical for Coleophom. The probability of independent evolution of two similar karyotypes resulting from coincidence of a great number of similar fragmentations is very low This process is much better explained by assuming Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alex
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