Comparative allozyme analysis of two geographic populations of Pararcyptera microptera meridionalis in China.
Yi Chuan Xue Bao
; 31(1): 26-30, 2004 Jan.
Article
em En
| MEDLINE
| ID: mdl-15468915
ABSTRACT
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. Higher allelic polymorphisms were observed at Fbp-2, Mdh-1 and Me-1. The two populations demonstrated high percentage of polymorphic loci (93.3% and 100.0%) but low observable overall heterozygosity (0.061 and 0.086), that could be attributed to heterozygote deficiencies, which led to the genotype frequency deviating from Hardy-Weinberg expectations. It is reasoned that the strong movement capability of the insect makes the individuals likely to be exposed to drastically varied environments, which tends to maintain dynamic equilibrium of genetic polymorphisms. The F-statistics between the two populations was comparatively smaller ( F(st) = 0.084), but larger when compared with those in migratory locusts like Locusta migratoria manilensis. Nei's genetic identity (I) and Roger's genetic distance (D) also showed close genetic relationship of the two populations by their high genetic identity (I = 0.904) and small genetic distance (D = 0.256). However,considerably qualitative and quantitative differences were noted at loci Acp-1 (F(st) = 0.462) and Pgi-1 (F(st) = 0.182).
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Base de dados:
MEDLINE
Assunto principal:
Ortópteros
/
Isoenzimas
Tipo de estudo:
Qualitative_research
Limite:
Animals
Idioma:
En
Revista:
Yi Chuan Xue Bao
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
China