title: B-chromosome and V-shaped spot asymmetry in the common frog (Rana temporaria L.) populations.
abstract: The common frog Rana temporaria is characterised by a large variety of colorations and dorsal patterns manifested by a V-shaped spot, which differs in the form, the number of elements and in the regularity. Some populations of R. temporaria are polymorphic for B-chromosome. V-shaped spot asymmetry and B-chromosome occurrence was studied in seven R. temporaria populations inventoried from Belarus country. The analysis of the dorsal V-shaped spot pattern asymmetry in brown frog populations implies that the persistence of additional chromosomes in populations may be one of the factors disturbing the developmental stability of some individuals. Although, Bs may confer some selective advantage to their carriers, which makes them react differently to environmental changes from do non-carriers.
authors.affiliation: Laboratory of biodiversity and environment: interaction, genome, Algiers University (USTHB), BP 32 El Alia, 16111 Bab Ezzouar Algiers, Algeria; Faculty of biological and agronomical sciences, Tizi-Ouzou University (UMMTO), Tizi-Ouzou 15000, Algeria. Electronic address: marinachaibi@yahoo.fr.
authors.forename: Marina
authors.initials: M
authors.lastname: Ploskaya-Chaibi
authors.affiliation: State Enterprise "Republican scientific practical centre of hygiene", ul. Akademicheskaya 27, Minsk 220072, Belarus.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Voitovich
authors.affiliation: Wild-life conservation department, Centre for bioresources, National Academy of Sciences of Belarus (NASB), ul. Akademicheskaja 27, Minsk 220072, Belarus.
authors.forename: Ruslan V
authors.initials: RV
authors.lastname: Novitsky
authors.affiliation: Laboratory of biodiversity and environment: interaction, genome, Algiers University (USTHB), BP 32 El Alia, 16111 Bab Ezzouar Algiers, Algeria.
authors.forename: Rachid
authors.initials: R
authors.lastname: Bouhadad
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000235:genetics*; D004777:Environment; D011896:Rana temporaria / Q000235:genetics*; D002094:Republic of Belarus; D012880:Skin Pigmentation / Q000235:genetics*; D013045:Species Specificity
keywords: Asymmetry; Asymétrie; B-chromosome; Chromosome-B; La marque en forme de « V »; Rana temporaria; V- shaped spot