Caracterização genética de ostras Crassostrea spp da Região de Graciosa e Santiago do Iguape - BA por meio de marcadores Issr

Abstract

The oyster farming activity of native species in Brazil usually is carried out empirically and lacks technology development to consolidate. The gene appears as an important tool in this quest. Genetic characterization and the determination of the genetic variability of natural populations are the first steps to be taken in order to develop commercial activity form. In this work a study was conducted by ISSR (Inter Simple Sequence Repeat) markers on the genetics of 33 gender oyster copies Crassostrea from Graciosa, from down south sub-region, the municipality of Taperoá, Bahia and 33 from Santiago do Iguape, bathed in the bay Iguape, village in the municipality of Cachoeira, Bahia. The populations studied showed high genetic variability intra population, however, the variability was larger among individuals of each population than between the two populations. Therefore, the populations studied oysters offer the possibility of squad training with good genetic diversity allowing its use in crops and conservation programs. Due to the great genetic variability found, was not genetically characterize populations of Crassostrea spp. The practice carried out with ISSR marker performed effectively and safely possible to infer on the genetic variability of the sampled populations. Quotes, therefore, that further studies should be carried out with collection points understood geographically between the region of Graciosa and Santiago do Iguape in order to build a mapping of genetic interaction between the two populations.