Please use this identifier to cite or link to this item:
Title: Estrutura genética populacional De Frankliniella Schultzei (TRYBOM, 1910) (THYSANOPTERA: Thripidae) No Brasil, Utilizando Marcadores Moleculares E Espectroscopia
Authors: Mascarenhas, André Luiz Santos
metadata.dc.contributor.advisor: Carvalho-Zilse, Gislene Almeida Silva Junior, Juvenal Cordeiro
Cavalleri, Adriano
Keywords: Citocromo Oxidase
Frankliniella schultzei
Issue Date: 23-Mar-2018
Publisher: Instituto Nacional de Pesquisa da Amazônia - INPA
metadata.dc.publisher.program: Genética, Conservação e Biologia Evolutiva - GCBEv
metadata.dc.description.resumo: Frankliniella schultzei (Trybom, 1910) is a highly polyphagous thrips that has a pest status and a tropical and subtropical distribution. It presents plasticity in body coloration and its two morpho-colors (pale and dark) is an open taxonomic question. Although uncertain, it’s likely that they originate in the Neotropics, as most species of that genus. Recent researches in Kenya and Australia (areas where this species was introduced) indicate that morpho-colors are different species, and that the dark form is actually a complex of species. In this study, nuclear (microsatellites - SSRs) and mitochondrial (Cytochrome Oxidase I - COI) molecular markers were used to estimate the genetic diversity, and to evaluate the population structure of F. schultzei in Brazil. The Near Infrared Spectroscopy (NIRS) was used to discriminate morfo-colors. We found that the clear form of F. schultzei is a different species from the dark one, and that it probably corresponds to a single biological unit in the world. We also inferred the existence of a complex of species within the dark form of F. schultzei in Brazil, in which populations (two species) are living in sympatry and sharing the same hosts. These populations are highly structured, with a higher percentage of variation within than between them, and a low or nonexistent gene flow. Adding haplotype network data into this context, we deduced that the southern region of Brazil should be the most likely center of origin and dispersal of F. schultzei, since it presents composition of samples by more stable and genetically diverse localities. These are the first scientific data produced about the population genetics of F. schultzei in their most likely region of origin – South America / southern Brazil, which are in agreement with the reports for for the species analyzed in Kenya and Australia.
Appears in Collections:Mestrado - GCBEv

Files in This Item:
File SizeFormat 
tese_inpa.pdf4,27 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons