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1

Ag-banded karyotypes in six species of jewel-beetles (Coleoptera, Buprestidae)

100%
Karagyan G.
Folia Biologica
|
2001
|
vol. 49
|
issue 1-2
43-47
EN
The male karyotypes of six species of the buprestid genera Sphenoptera (two species) and Acmaeoderella (four species) were studied after Ag-banding. The following karyotypes were found in individual species: n=19-23, with predominance of 23, in Sphenoptera scovitzi Fald., 2n = 24 (22 + Xyp) in Sphenoptera mesopotamica Mars., 2n = 18 (16 + Xyr) in Acmaeoderella flavofasciata Pill. & Mitt., Acmaeoderella gibbulosa Men., Acmaeoderella boryi Brulle, Acmaeoderella vetusta Men. In Sph. scovitzi, two chromosome pairs were found to display stable argentophilous blocks. In Sph. mesopotamica, NOR-bearing is one of the large autosomal bivalents. In all species of the genus Acmaeoderella, a nucleolus-like argentophilous body is placed between the X and y chromosomes.
2

Karyological notes on three weevil species from Armenia (Coleoptera, Curculionidae, Cleoninae)

51%
Holecova M., Rozek M., Karagyan G.
Folia Biologica
|
2000
|
vol. 48
|
issue 1-2
25-27
EN
Karyological studies were carried out on three Armenian weevil species from the subfamily Cleoninae. The following chromosome numbers were found in individual species: 2n = 38, n% = 18+Xyp in Menecleonus anxius (Gyllenhal, 1824), 2n=40, n% = 19+Xyp in Conorhynchus nigrivittis (Pallas, 1781) and 2n = 44, n% =21+Xyp in Lixus iridis Olivier, 1807. The heterochromosomes of all the examined species form, in the first meiotic metaphase, a typical parachute bivalent.
3

Karyological notes on six beetle species from Armenia (Coleoptera: Tenebrionidae, Cerambycidae, Curculionidae)

51%
Holecova M., Lachowska D., Karagyan G.
Folia Biologica
|
2002
|
vol. 50
|
issue 1-2
9-12
EN
Karyotypic details were studied in males of six beetle species from three families, viz. Tenebrionidae: Dailognatha pumila Bdy. (2n=20, n male= 9+Xyp), Pachyscelis musiva Menetr. (2n=18, n male= 8+Xyp), Pimelia capito Kryn. (2n = 18, n male= 8+Xyp); Cerambycidae: Agapanthia walteri Reitt. (2n=20, n male = 9+Xyp), Agapanthia korostelevi Danilevsky (2n=20, n male = 9 + Xyp); Curculionidae: Phyllobius caucasicus Stierl. (2n = 22, n male=10+Xyp). The chromosome number and sex determining system of all beetle species are described for the first time. Evolutionary trends in karyotypes of the studied beetle groups are briefly discussed.
4

New cytogenetic data on Armenian Buprestids (Coleoptera, Buprestidae) with a discussion of karyotype variation within the family

51%
Karagyan G., Kuznetsova V. G., Lachowska D.
Folia Biologica
|
2004
|
vol. 52
|
issue 3-4
151-158
EN
As a part of ongoing cytogenetic studies on the jewel-beetles (Buprestidae, Coleoptera) of Armenia, the male karyotypes and meiosis of nine species (5 genera, 4 tribes, 2 subfamilies) are described, figured and discussed. In Ovalisia nadezhdae Sem., Sphenoptera artemisiae Reitt., Coraebus rubi L., C. sinuatus Creutz., Meliboeus caucasicus Reitt., Agrilus angustulus Ill. Men., A. obscuricollis Kiesw., and A. araxenus Khnz. diploid chromosome numbers vary in a narrow range from 20 to 24. In Sph. glabrata Men. a high chromosome number of 2n=40 was discovered. All the species have a XY sex chromosome system, which is however of different types. The data available on the buprestid karyotypes and karyotype variation at different taxonomic levels within the family are discussed.
5

Cytogenetic investigations on seven Palaearctic weevil species (Coleoptera, Curculionidae)

51%
Lachowska D., Rozek M., Holecova M., Karagyan G.
Folia Biologica
|
2001
|
vol. 49
|
issue 1-2
49-52
EN
Cytogenetic investigations were carried out on seven species of bisexual weevils from five subfamilies. The following numbers of chromosomes were found in individual species: 2n=22, n_=10+Xyp in Ptochus porcellus Boh. (Otiorhynchinae); 2n=40, n_=19+Xyp in Larinodontes turbinatus Gyll. (Cleoninae); 2n=26, n_=12+Xyp in Curculio pellitus (Boh.) (Curculioninae); 2n=30, n_=14+Xyp in Acalles camelus (F.), Acalles echinatus (Germ.), Acalles hypocrita Boh. (Cryptorhynchinae), and 2n=40, n_=19+Xyp in Cionus hortulanus (Foucr.) (Mecininae). The heterochromosomes of all the examined species form, in the first meiotic metaphase, a parachute bivalent. The chromosome number and sex determining system of six species and two genera are described for the first time.
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