An intron loss of Dfak gene in species of the Drosophila melanogaster subgroup and phylogenetic analysis.

Drosophila focal adhesion kinase (Dfak) gene is a single-copy nuclear gene. Previous study revealed that Drosophila melanogaster and Drosophila simulans had lost an intron precisely within the tyrosine kinase (TyK) domain of this gene. However, this did not happen in several other Drosophila species, including Drosophila elegans, Drosophila ficusphila, Drosophila biarmipes, Drosophila jambulina, Drosophila prostipennis, Drosophila takahashii, and Drosophila pseudoobscura.

Comparative allozyme analysis of two geographic populations of Pararcyptera microptera meridionalis in China.

The genetic structure of the two populations of Pararcyptera microptera meridionalis (Ikonn.) from Hebei and Liaoning in China was analyzed with horizontal starch gel electrophoresis. Among 15 loci of 11 enzymes identified in zymograms, Adk-1, Fbp-1, Mdh-2 and G3pd-1 showed low variability with few alleles.

Genetic differentiation of different populations of four locust species in China.

The genetic structure of eight populations of four locust species in three families (Catantopidae, Pamphagidae and Pyrgomorphidae) was examined by means of horizontal starch gel electrophoresis, the locusts were collected from Shanxi, Jiangsu and Hebei Province in China. The allele frequency and allozyme polymorphism of 12 enzymes (18 loci) were analyzed. Low variability with a few alleles was observed in Shirakiacris shirakii and Atractomorpha sinensis, however, Oxya Chinensis and Haplotropis brunneriana showed high polymorphism.

Genetic studies on eight populations of eight locust species from Shanxi Province, China.

The genetic structure of eight locust species in three families (Catantopidae, Oedipodidae and Arcypteridae) from Shanxi Province in China was compared using allozyme analysis with horizontal starch gel electrophoresis. Among 17 loci identified in zymograms, Ao-1, Est-3, G3pd-1, Idh-2 and Mdh-2 had low variability with a few alleles. High polymorphism was observed at Ldh-1, Me-1 and Gpi-1.

Comparative allozyme analysis of Oriental migratory locust Locusta migratoria manilensis from two breeding areas in north China.

The allozyme analysis using horizontal starch gel electrophoresis was employed to compare the genetic structure in the population of oriental migratory locust Locusta migratoria manilensis from two breeding areas, Beidagang(Tianjin) and Huanghua(Hebei). The two areas are adjacent but with distinct ecological features, with the recorded locust outbreaks and migration. The zymograms showed that among nineteen loci four (Mdh-1, Pgm, Adk and G3pd) showed extremely low variability level with the frequency of the most common allele higher than 0.