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Rezistence dřepčíků rodu Phyllotreta a Psylliodes na řepce k vybraným insekticidůmGajdošík, Erik January 2015 (has links)
Diploma thesis is followed of bachelor thesis of the same author out of 2013. The aim of this work was evaluation sensibility of the flea beetles of birth Phyllotreta and Psylliodes to active substances of pyrethroid insecticides (lambda-cyhalothrin, cypermethrin and tau-fluvalinate), neonicotinoids (thiacloprid) and organophosphorous insecticides (chlorpyrifos-ethyl). The research was conducted during 2013 in the 22 locations and in 2014 at 15 sites in the Czech Republic. Beetles were collected from normal commercial oilseed colza and mustard. Testing was conducted by laboratory methods of IRAC number 011, 021 and 025, during testing was used the (adul-vial-test). These metods are determined for monitoring (Meligethes spp.), but also these metods are suitable for testing another kind of pest of colza. Between the compared samples of populations flea beetles were found in some localities differences in their sensitivity to the active used substance. The species spectrum of flea beetles were observed in populations collected in 2012. Index of dominance for individual flea beetles species were determined. P. nigripes (37,26 %), P. atra (35,26 %) and P. nemorum (23,26 %) were eudominant species, P. undulata (3,66 %) subdominant, P. vittula (0,06 %) and P. chrysocephala (0,50 %) subrecedent.
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INFERÊNCIAS EVOLUTIVAS PARA DUAS ESPÉCIES DO GÊNERO Omophoita (COLEOPTERA, CHRYSOMELIDAE): DIFERENCIAÇÃO CARIOTÍPICA E MOLECULARWolski, Michele Andressa Vier 25 February 2014 (has links)
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Previous issue date: 2014-02-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Alticinae apresenta características cariotípicas muito interessantes quanto a
variação do número diplóide, do sistema de determinação sexual e irregularidades
meióticas. O número cromossômico mais frequente é de 11 ou 12 pares. As
espécies de Oedionychina estudadas citogeneticamente possuem 2n= 22,10II+X+Y
com cromossomos sexuais gigantes. No que se refere à posição sistemática existem
muitas divergências entre os estudos e problemas de identificação das espécies
pertencentes aos vários gêneros. O estudo com técnicas mais refinadas e o
mapeamento do DNA r 5S é recente em Coleoptera, e as poucas espécies de
Alticinae estudadas mostram a presença de dois ou três pares autossômicos. Assim,
este trabalho tem o objetivo de analisar citogeneticamente e propor as estratégias de
diferenciação cariotípica para as espécies de Omophoita communis e Omophoita
sexnotata. A análise citogenética dos indivíduos de duas populações de O.
communis estudadas mostrou a ocorrência de grande variação no número diploide e
morfologia cromossômica, sendo possível separá-las em dois citótipos. O citótipo I
possui 2n= 22 e o citótipo II 2n= 12, sendo essa variação é descrita pela primeira
vez no gênero. Adicionalmente, o estudo da morfologia do edeago mostrou
diferenças, indicando um provável padrão de diferenciação das duas espécies. A
análise da árvore consenso da reconstrução filogenética também evidencia que os
citótipos mostram agrupamentos diferentes e reforçam a hipótese de duas espécies.
O estudo do mapeamento do gene DNAr 5S em O. sexnotata evidenciou a presença
desse cluster em todos os cromossomos autossômicos, sendo esse padrão de
dispersão nunca descrito em Coleoptera. Na literatura, a dispersão dos genes
ribossomais está sempre relacionada com a presença de elementos transponíveis.
O resultado do sequenciamento dos fragmentos de 5S ribossomal obtidos de cada
cromossomo de O. sexnotata resultaram em sequencias similares a RNAr 5S de
Drosophila melanogaster, elemento transponível EnSpm, retropseudogene de 5S e
microssatélite. Adicionalmente, a analise da estrutura secundaria do RNAr 5S,
mostrou que as sequencias obtidas não são funcionais quando comparadas seus
percentuais de energia livre em relação ao percentual da sequencia original do RNAr
5S. / Alticinae presents karyotypic characteristics very interesting as the variation of
the diploid number, sex determination system and meiotic irregularities. The most
frequent chromosome number is 11 or 12 pairs. The species cytogenetically studied
Oedionychina have 2n = 22,10 II + X + Y with giant sex chromosomes. In relation to
the systematic position there are many divergence between the studies and
problems of identification of species belonging to several genera. The study with
more refined techniques and rDNA 5s mapping is recent in Coleoptera , and the few
Alticinae species studied show the presence of two or three autosomal pairs. Thus,
this study aims to analyze cytogenetically and propose strategies for the species
karyotype differentiation of Omophoita communis and Omophoita sexnotata.
Cytogenetic analysis of individuals of both populations of O. communis showed the
existence of a large variation in diploid number and chromosome morphology, being
possible to separate them into two cytotypes. Cytotype I presented 2n = 22 and
cytotype II 2n = 12, this variation is described for the first time in the genus.
Additionally, the study of the morphology of the aedeagus showed differences,
indicating a likely pattern of differentiation of the two species. The phylogenetic
reconstruction consensus tree analysis also presented that cytotypes show different
groupings and reinforce the hypothesis of two species. The 5S rDNA gene mapping
of O. sexnotata showed the presence of this cluster in all autosomes, this dispersal
pattern was never described in Coleoptera before. In the literature, the dispersion of
ribosomal genes is always associated with the presence of transposable elements.
The sequencing of 5S rRNA fragments obtained from each chromosome of O.
sexnotata resulted in similar to 5S rRNA sequences of Drosophila melanogaster
transposable element EnSpm, retropseudogene 5S and microsatellite. Additionally,
analysis of the secondary structure of 5S rRNA showed that the sequences obtained
are not functional compared their percentage of free energy with the percentage of
the original sequence of the 5S rRNA .
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