SYSTEMATICS, MORPHOLOGY AND PHYSIOLOGY Cytogenetics Studies in Thirteen Brazilian Species of Phaneropterinae (Orthoptera: Tettigonioidea: Tettigoniidae): Main Evolutive Trends Based on their Karyological Traits
نویسندگان
چکیده
The thirteen species of Phaneropterinae here studied can be arranged in four different groups according to their basic karyological traits. All of them share the same kind of chromosomal sex determining mechanism with X0♂ and XX♀. The X chromosome differs among species and always appears heteropycnotic during prophase I, it is the largest in the set and segregates precociously during anaphase I. Among the species, the karyotypes varies in fundamental number between 31 to 21. The meaning of these significant changes in the karyotypes in relation to the phylogeny within some large taxonomic group of species is discussed.
منابع مشابه
SYSTEMATICS, MORPHOLOGY AND PHYSIOLOGY Cytogenetics Studies in Brazilian Species of Pseudophyllinae (Orthoptera: Tettigoniidae): 2n(♂)=35 and FN=35 the Probable Basic and Ancestral Karyotype of the Family Tettigoniidae
The karyotypes of fi ve species of Brazilian Pseudophyllinae belonging to four tribes were here studied. The data available in the literature altogether with those obtained with species in here studied allowed us to infer that 2n(♂)=35 is the highest chromosome number found in the family Tettigoniidae and that it is present in species belonging to Pseudophyllinae, Zaprochilinae and in one speci...
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