scholarly journals Mites fluctuation population on peach tree (Prunus persica (L.) Batsch) and in associated plants

2011 ◽  
Vol 33 (3) ◽  
pp. 765-773 ◽  
Author(s):  
Carla Rosana Eichelberger ◽  
Liana Johann ◽  
Fernanda Majolo ◽  
Noeli Juarez Ferla
Keyword(s):  
Prunus Persica ◽  
Rio Grande ◽  
Population Diversity ◽  
Panonychus Ulmi ◽  
Apical Region ◽  
Basal Region ◽  
Rio Grande Do Sul ◽  
Phytophagous Mites ◽  
Phytoseiulus Macropilis ◽  
Tetranychus Ludeni

Despite the importance of peach (Prunus persica (L.) Batsch) in Rio Grande do Sul, little is known about mites fluctuation population considered important to this crop. The objective of this study was to know the population diversity and fluctuation of mite species associated with Premier and Eldorado varieties in Roca Sales and Venâncio Aires counties, Rio Grande do Sul. The study was conducted from July 2008 to June 2009 when 15 plants were randomly chosen in each area. The plants were divided in quadrants and from each one a branch was chosen from which three leaves were removed: one collected in the apical region, another in the medium and the other in the basal region, totalizing 180 leaves/area. Five of the most abundant associated plants were collected monthly in enough amounts for the screening under the stereoscopic microscope during an hour. A total of 1,124 mites were found belonging to 14 families and 28 species. Tetranychus ludeni Zacher, 1913, Panonychus ulmi (Koch, 1836) and Mononychellus planki (McGregor, 1950) were the most abundant phytophagous mites, whereas Typhlodromalus aripo Deleon, 1967 and Phytoseiulus macropilis (Banks, 1904) the most common predatory mites. The period of one hour under stereoscopic microscope was enough to get a representative sample. In both places evaluated the ecologic indices were low, but little higherin Premier (H' 0.56; EqJ: 0.43) when compared to Eldorado (H' 0.53; EqJ 0.40). In Premier constant species were not observed and accessory only Brevipalpus phoenicis (Geijskes, 1939), T. ludeni and T. aripo. Higher abundance was observed in December and January and bigger amount in April. Already in Eldorado, T. ludeni and P. ulmi were constants. Greater abundance was observed in November and December, whereas grater richness in December and January. In both orchards were not found mites in buds. Tetranychus ludeni is the most abundant phytophagous mites with outbreak population in November, December and January and high predator diversity was observed on associated plants and on peach plants, indicating the existence of species mobility in peach orchard.

scholarly journals Pathogenicity of Isaria fumosorosea to European red mite in the laboratory

Biotemas ◽  
2017 ◽  
Vol 30 (1) ◽  
pp. 73
Author(s):  
Cláudia Andréia Gräff ◽  
Liana Johann ◽  
Cláucia Fernanda Volken de Souza ◽  
Noeli Juarez Ferla
Keyword(s):  
Rio Grande ◽  
Panonychus Ulmi ◽  
Rio Grande Do Sul ◽  
Isaria Fumosorosea ◽  
European Red Mite

http://dx.doi.org/10.5007/2175-7925.2017v30n1p73A vitivinicultura no estado do Rio Grande do Sul tem sofrido infestações significativas de ácaros praga, destacando-se recentemente Panonychus ulmi (Koch). Há relatos sobre a capacidade de controle de ácaros fitófagos com Isaria fumosorosea. O objetivo deste trabalho foi avaliar em laboratório a ação patogênica de I. fumosorosea sobre o ácaro P. ulmi. As criações de P. ulmi foram estabelecidas a partir de coleta realizadas em videiras da Serra Gaúcha. Sobre os ovos de P. ulmi, as aplicações de suspensões de esporos foram feitas em diferentes concentrações. As triplicatas das fêmeas de 12 a 15 dias foram tratadas com suspensão a 108 esporos x mL-1. As testemunhas foram tratadas com água destilada. Após sete dias da aplicação, observaram-se 55,6% de ovos não eclodidos tratados com suspensão 106 esporos x mL-1 e com fêmeas tratadas obteve-se uma mortalidade total entre 85-90% e mortalidade confirmada entre 50-55%. A mortalidade máxima dos controles no tratamento dos ovos e das fêmeas foi, em média, de 12,8 e 15,5%, respectivamente. Conclui-se que o isolado I. fumosorosea possui habilidade para infectar ovos e fêmeas adultas de P. ulmi e portanto mostra-se como uma alternativa viável para ser experimentada no campo.

scholarly journals Tetranychus urticae (Koch, 1836) em cultivo de lúpulo Humulus lupulus L. (Cannabaceae) no Rio Grande do Sul, Brasil - primeiro relato de ocorrência

2021 ◽  
Vol 3 ◽  
pp. ec03025
Author(s):  
Wesley B. Wurlitzer ◽  
Liana Johann ◽  
Noeli J. Ferla ◽  
Guilherme L. Silva
Keyword(s):  
Tetranychus Urticae ◽  
Rio Grande ◽  
Humulus Lupulus ◽  
Plant Production ◽  
Rio Grande Do Sul ◽  
Humulus Lupulus L ◽  
Phytoseiulus Macropilis ◽  
Tetranychus Urticae Koch ◽  
First Time

Tetranychus urticae Koch (Koch, 1836) is considered one of the main pests in hop crops Humulus lupulus L. (Cannabaceae) when found in high densities, as it causes leaf browning, plant defoliation and attack on flowers, reducing productivity and quality of the plant production. In this sense, the present study aims to record for the first time the occurrence of T. urticae and its injury to hops in Rio Grande do Sul State. The injuries observed were irregular spots, web formation and leaf browning. It was also observed Phytoseiulus macropilis (Banks, 1904) preying on T. urticae.  

Bioecological aspects of mites associated with Vitis vinifera varieties in the state of Rio Grande Do Sul, Brazil

2020 ◽  
Vol 25 (9) ◽  
pp. 1618-1642
Author(s):  
Rita Tatiane Leão Da Silva ◽  
Vinicius Leão Da Silva ◽  
Darliane Evangelho Silva ◽  
Joseane Moreira Do Nascimento ◽  
Matheus Schüssler ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Rio Grande ◽  
Abundant Species ◽  
Economic Importance ◽  
The State ◽  
Rio Grande Do Sul ◽  
Polyphagotarsonemus Latus ◽  
Phytophagous Mites ◽  
Community Behavior

Viticulture is an activity of economic importance in the state of Rio Grande do Sul, especially in Serra Gaúcha, which is the major grape-producing region. However, an increase in cultivated areas has been observed in other municipalities in the state. The aim of this study is to characterize mite diversity and community behavior on different varieties, recognizing which predatory species have potential to control phytophagous mites associated with Europan varieties in the Taquari Valley, Rio Grande do Sul state. The study was conducted in vineyards located in the municipalities of Marques de Souza: ‘BRS Vitória’ and cv ‘Itália’ “m”; Imigrante: cv ‘Itália’ “i”; Dois Lajeados: cv ‘Itália’ (c and f), ‘Tannat’ and ‘Chardonnay’; and Putinga: ‘Champanhe’ and ‘Moscato’. Samplings were carried out monthly in the period ranging from March 2017 to March 2018, during which twenty plants were randomly collected from each variety. Three leaves were clipped from each plant; one from the apical third, one from the median third, and one from the basal third, totaling 60 leaves per area. A total of 10,533 specimens were collected, belonging to 12 families, 38 genera, and 53 species, along with those belonging to the suborder Oribatida. The ‘Itália’ “c” variety had the highest abundance (2,012), followed by ‘Moscato’ (1,788) and ‘BRS Vitória’ (1,593). Phytoseiidae had the highest diversity among the mite families observed, with 20 species followed by Tetranychidae (8). The most abundant species were Polyphagotarsonemus latus (Banks) (3,420) and Euseius concordis (Chant) (565), present throughout the study period. ‘Chardonnay’ variety had the highest similarity (72.55%) among mite fauna compositions and the highest dissimilarity occurred between ‘BRS Vitória’ and ‘Champanhe’ varieties (95.48%). Environments evaluated in Dois Lajeados and Putinga were the most homogeneous concerning mite fauna diversity and abundance.

Phytoseiid mites (Acari: Phytoseiidae) from vineyards in Rio Grande do Sul State, Brazil

Zootaxa ◽  
2011 ◽  
Vol 2976 (1) ◽  
pp. 15 ◽  
Author(s):  
NOELI JUAREZ FERLA ◽  
LIANA JOHANN ◽  
CRISNA KLOCK ◽  
FERNANDA MAJOLO ◽  
MARCOS BOTTON
Keyword(s):  
Natural Enemies ◽  
Rio Grande ◽  
The State ◽  
Panonychus Ulmi ◽  
Neoseiulus Californicus ◽  
Rio Grande Do Sul ◽  
Polyphagotarsonemus Latus ◽  
Phytoseiid Mites ◽  
Calepitrimerus Vitis

In this paper we report on the phytoseiid mites associated with grapevine in the state of Rio Grande do Sul, Brazil, which may be natural enemies of the pest mites Calepitrimerus vitis, Colomerus vitis (Eriophyidae), Panonychus ulmi (Tetranychidae) and Polyphagotarsonemus latus (Tarsonemidae). A total of 1,538 phytoseiid mites belonging to 30 species was found. Neoseiulus californicus showed the highest abundance with 844 specimens, followed by Euseius inouei, with 274 specimens. The majority of mites (83%) were observed on vine plants and 17% on the uncultivated plants. Of the 30 species found, 22 were observed on vine plants, 15 on the uncultivated plants and 10 species on both types of plants. When the phytoseiid species were collected in both places, on vine and on the associated plants, greater populations were found on vine plants.

scholarly journals Mitefauna (Arachnida: Acari) associated to grapevine, Vitis vinifera L. (Vitaceae), in the municipalities of Bento Gonçalves and Candiota, Rio Grande do Sul, Brazil

Check List ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 522 ◽  
Author(s):  
Crisna Letícia Klock ◽  
Marcos Botton ◽  
Noeli Juarez Ferla
Keyword(s):  
Species Richness ◽  
Vitis Vinifera ◽  
Rio Grande ◽  
Neoseiulus Californicus ◽  
Vitis Vinifera L ◽  
Rio Grande Do Sul ◽  
Polyphagotarsonemus Latus ◽  
Phytophagous Mites ◽  
Calepitrimerus Vitis

The mitefauna associated to Merlot and Chardonnay grapevine cultivars and associated plants in the municipalities of Bento Gonçalves and Candiota, Rio Grande do Sul was investigated. The study was developed between October 2006 and September 2007, where 20 grapevine plants were randomly chosen from each municipality and monthly sampled. Three leaves of each plant were taken. A total of 11,598 mites belonging to 14 families and to 52 species were found. Fifty-nine percent of the total specimens were collected in Candiota, being 93% associated to the Merlot cultivar. Higher species richness was observed on associated plants. Phytoseiidae showed the highest species richness, with ten species, and Eriophyidae showed the highest abundance, with 8,675 specimens. Calepitrimerus vitis (Nalepa, 1905) and Polyphagotarsonemus latus (Banks, 1904) were the most common phytophagous mites, while Neoseiulus californicus (McGregor, 1954) and Pronematus anconai (Baker ,1943) were the most common predators.

scholarly journals Perfil e preferências do consumidor de pêssego (Prunus persica) em diferentes regiões produtoras no Rio Grande do Sul

2010 ◽  
Vol 32 (1) ◽  
pp. 090-100 ◽  
Author(s):  
Renato Trevisan ◽  
Clause Fátima de Brum Piana ◽  
Rosa de Oliveira Treptow ◽  
Emerson Dias Gonçalves ◽  
Luis Eduardo Corrêa Antunes
Keyword(s):  
Prunus Persica ◽  
Rio Grande ◽  
Rio Grande Do Sul

Entender a qualidade percebida pelo consumidor é fundamental para aquele que deseja não apenas produzir frutas, mas também comercializá-las. Além disso, conhecer o consumidor e seus hábitos contribui no adequado planejamento de ações nos diversos segmentos da cadeia produtiva. Procurou-se verificar o perfil e a preferência dos consumidores de pêssego in natura, em três cidades do Rio Grande do Sul. A partir das respostas ao questionário aplicado, traçou-se seu perfil quanto as suas exigências relativas ao hábito de compra e da qualidade da fruta. Utilizou-se a estatística de Qui-quadrado para verificar a ocorrência de independência entre as variáveis obtidas por meio das respostas dos consumidores em uma amostra de 430 entrevistados entre as três cidades. Constatou-se que o perfil e a preferência dos consumidores de pêssego são distintos nas três cidades pesquisadas quanto ao local de compra e a preferência pela cor da polpa, porém a coloração amarelo-avermelhada da epiderme, o consumo semanal e o sabor são atributos semelhantes para os consumidores nas três cidades.

scholarly journals Influência das cultivares de videiras (Vitis vinifera L.) e do sistema de condução sobre a acarofauna

2021 ◽  
Vol 3 ◽  
pp. ec03023
Author(s):  
Rita T. L. Da Silva ◽  
Amália L. W. Berté ◽  
Gabriel L. Bizarro ◽  
Angelica Sulzbach ◽  
Vinicius L. Da Silva ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Rio Grande ◽  
Sampling Period ◽  
Vitis Vinifera L ◽  
Rio Grande Do Sul ◽  
The South ◽  
Phytophagous Mites ◽  
South Of Brazil ◽  
Grape Cultivars

The South of Brazil is the largest producer of grapes, however this production is affected by climate and herbivores such as phytophagous mites. The aim of this work was to associate the mite fauna with the grape cultivars Chardonnay, BRS Lorena and hybrid cultivars rootstock Paulsen 1103, in trellising and espalier systems, in the municipalities of Bento Gonçalves and Garibaldi, Rio Grande do Sul State, Brazil. The cultivars were: Chardonnay trellis (Cl) Chardonnay espalier (Ce), BRS Lorena trellis (Ll), BRS Lorena espalier (Le) and the hybrid cultivars Paulsen rootstock 1103 (Pa). Monthly samplings were carried out from November 2016 to April 2017. Twenty plants per area were randomly sampled, from each plant three apical leaves were collected, apical, median and basal branches (60 leaves / area). In total, 6,865 mites belonging to seven families, 13 genera and 22 species were collected. The most abundant phytophagous belong to Tarsonemidae and Tenuipalpidae, the predators to Phytoseiidae and the generalists to Tydeidae and Iolinidae. The cultivars Lorena Ll was the greatest similarity (82.39%) among species mites, followed by Paulsen Pa (72.54%), Lorena Le (70.67%), Chardonnay Cl (31.79%) and Chardonnay Ce (31.48%). The highest dissimilarity among the cultivars occurred between Chardonnay Ce and Lorena Le (66.49%), followed by Chardonnay Ce, Chardonnay Cl (66.44%), Chardonnay Ce and Lorena Ll (61.49 %). Thus, there is homogeneity between the sampled cultivars and the conduction systems and the apical third of the leaves and the sampling period are important in determining the composition of the species.

scholarly journals Ácaros predadores (Acari) associados à cultura do morango (Fragaria sp., Rosaceae) e plantas próximas no Estado do Rio Grande do Sul

2007 ◽  
Vol 7 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Noeli Juarez Ferla ◽  
Marla Maria Marchetti ◽  
Dinarte Gonçalves
Keyword(s):  
Tetranychus Urticae ◽  
Rio Grande ◽  
Neoseiulus Californicus ◽  
Rio Grande Do Sul ◽  
Bidens Pilosa ◽  
Sonchus Oleraceus ◽  
Phytoseiulus Macropilis ◽  
Tetranychus Urticae Koch

O objetivo deste estudo foi determinar as espécies de ácaros predadores associados à cultura do morango e em plantas associadas, no estado do Rio Grande do Sul. Este estudo foi conduzido nos municípios de Bom Princípio, Capitão e Lajeado em plantações de morango da variedade Oso Grande em túnel baixo. As avaliações foram feitas mensalmente entre agosto de 2002 e março de 2004. Nas plantas de morango, as amostras foram constituídas de três folhas coletadas em cada uma das 15 plantas escolhidas ao acaso, totalizando 45 folhas/campo. Nas plantas associadas, o esforço de amostragem foi de uma hora para cada planta avaliada. Ácaros das famílias Ascidae, Parasitidae, Phytoseiidae, Cunaxidae, Erythraeidae, Stigmaeidae e Tydeidae foram observados associados com o ácaro rajado, Tetranychus urticae Koch, 1836, praga importante na região onde este estudo foi conduzido. Vinte espécies foram identificadas, 14 das quais pertencem à família Phytoseiidae. Phytoseiulus macropilis (Banks, 1905) e Neoseiulus californicus (McGregor, 1954) foram as espécies mais comuns. Nas plantas asssociadas, a maior diversidade foi observada em Richardia sp. (seis espécies), Agerantum conyzoides L.(quatro espécies) e Sonchus oleraceus L., Bidens pilosa L.e Rumex sp. (três espécies). Uma chave docotômica é apresentada para a identificação das espécies.

scholarly journals Spider mites associated to soybean in Rio Grande do Sul, Brazil

2008 ◽  
Vol 43 (3) ◽  
pp. 295-301 ◽  
Author(s):  
Samuel Roggia ◽  
Jerson Vanderlei Carús Guedes ◽  
Rejane Cristina Roppa Kuss ◽  
Jonas André Arnemann ◽  
Denise Návia
Keyword(s):  
Geographic Distribution ◽  
Genetically Modified ◽  
Rio Grande ◽  
Spider Mites ◽  
Mite Species ◽  
Rio Grande Do Sul ◽  
Genetically Modified Soybean ◽  
Phytophagous Mites ◽  
Dichotomous Key ◽  
The Family

The objective of this work was to study the occurrence and geographic distribution of phytophagous mites associated to soybean in Rio Grande do Sul, Brazil. Samplings were performed from January to May 2005 on genetically modified soybean (glyphosate-tolerant) crops, in 27 municipalities of six regions - Alto Vale do Uruguai, Campanha, Depressão Central, Planalto Médio, Missões and Serra do Sudeste. Five phytophagous mite species belonging to the family Tetranychidae - Mononychellus planki, Tetranychus desertorum, T. gigas, T. ludeni and T. urticae - occurred in 21, 12, 5, 3 and 14 municipalities, respectively. A map of Rio Grande do Sul with the geographic distribution of each species is presented, as well as an illustrated dichotomous key to help the identification of the spider mites found.

scholarly journals Ocorrência do ácaro vermelho europeu Panonychus ulmi (Koch) (Tetranychidae) associado à cultura da videira no Rio Grande do Sul, Brasil

2008 ◽  
Vol 38 (6) ◽  
pp. 1758-1761 ◽  
Author(s):  
Noeli Juarez Ferla ◽  
Marcos Botton
Keyword(s):  
Vitis Vinifera ◽  
Rio Grande ◽  
Panonychus Ulmi ◽  
Vitis Vinifera L ◽  
Rio Grande Do Sul

Neste artigo é descrita ocorrência e o dano causado pelo ácaro vermelho europeu Panonychus ulmi (Koch) associado à cultura da videira. As coletas foram realizadas na safra 2005-2006 em Vitis vinifera L. da cultivar Merlot, nos municípios de Bento Gonçalves e Candiota, no Estado do Rio Grande do Sul, Brasil. As folhas infestadas apresentaram bronzeamento, com manchas avermelhadas na face adaxial, resultando na queda prematura das mesmas. Esse é o primeiro registro do ácaro vermelho europeu danificando a cultura da videira no Rio Grande do Sul.

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