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1.
Braz. j. biol ; 72(4): 915-918, Nov. 2012. tab
Article in English | LILACS | ID: lil-660389

ABSTRACT

The purpose of this study was to elaborate a preliminary list of the mite species associated with rubber trees in the municipality of Santana, in the state of Amapá, Brazil. Two collections of rubber tree leaves were conducted on May 2nd and June 5th , 2010. Twenty-five plants were sampled at random. Three leaves were collected per plant, from the lower third of the crown. The samples were placed in paper bags, packed in an isothermal box chilled gel-based pulp plant (Gelo-X®), and transported to the Entomology Laboratory at Embrapa Amapá, in Macapá. The leaflets were examined under a stereomicroscope, and the mites found on the adaxial and abaxial surfaces of the leaves were collected with a stilet, mounted on microscope slides in Hoyer's medium, and later identified. We collected a total of 1,722 mites of 10 families: Acaridae, Cunaxidae, Eriophyidae, Iolinidae, Phytoseiidae, Stigmaeidae, Tarsonemidae, Tenuipalpidae, Tydeidae, and Winterschmidtiidae, in addition to unidentified species of the suborders Oribatida and Astigmatina. The family Phytoseiidae represented only 2.90% of specimens collected, but showed the highest species richness (5 species). The only representative of Tenuipalpidae was Tenuipalpus heveae Baker, 1945, but 81.13% of the mites collected in this study belonged to this species.


O objetivo deste estudo foi elaborar uma lista preliminar das espécies de ácaros associadas à seringueira, no município de Santana, Estado do Amapá. Foram realizadas duas coletas de folhas de seringueira, nos dias 2 de maio e 5 de junho de 2010. Foram tomadas aleatoriamente 25 plantas, de cada uma das quais foram coletadas três folhas, no terço inferior da copa. As amostras foram acondicionadas em sacos de papel, mantidas em caixa isotérmica refrigerada com gel à base de celulose vegetal (Gelo-X®) e transportadas até o Laboratório de Entomologia da Embrapa Amapá, em Macapá. A triagem dos folíolos foi realizada com o auxílio de estereomicroscópio. Os ácaros encontrados nas faces adaxial e abaxial das folhas foram capturados com um estilete, montados em lâminas de microscopia em meio de Hoyer e, posteriormente, identificados. Foram coletados 1.722 ácaros, pertencentes a dez famílias: Acaridae, Cunaxidae, Eriophyidae, Iolinidae, Phytoseiidae, Stigmaeidae, Tarsonemidae, Tenuipalpidae, Tydeidae e Winterschmidtiidae, além de espécies não identificadas das subordens Oribatida e Astigmatina. A família Phytoseiidae representou apenas 2,90% do total de espécimes coletados, porém apresentou a maior riqueza em espécies (cinco espécies). A família Tenuipalpidae, embora representada apenas por Tenuipalpus heveae Baker, 1945, apresentou o maior número de espécimes capturados (81,13%).


Subject(s)
Animals , Hevea/parasitology , Mites/classification , Brazil , Plant Leaves/parasitology
2.
Biota neotrop. (Online, Ed. port.) ; 9(4): 55-58, Oct.-Dec. 2009. tab
Article in English | LILACS | ID: lil-543221

ABSTRACT

Phytophagous mites from natural vegetation have been scarcely studied in Venezuela. Surveys were carried out from March 2007 to November 2008 to determine diversity of phytophagous mites inhabiting in different plant taxa in Iribarren, Jiménez, Palavecino, Morán and Crespo municipalities from Lara state, Venezuela. In each sampling site, a 500 m- transect was established and the most frequent plant species were sampled. In field, 15 leaves were examined for mite presence by using hand lens. In laboratory, plant material was examined under magnification and mite morpho-species belonging to tetranychid and tenuipalpid were picked up. A total of two tenuipalpid species and eight tetranychid species were identified. Tenuipalpid mites identified were Brevipalpus phoenicis (Geijskes) on Cassia siamea (Caesalpinaceae), Capparis linearis (Capparidaceae), Spathodea campanulata (Bignoniaceae), Randia sp. (Rubiaceae), Melicoccus bijugatus (Sapindaceae) and Tenuipalpus sp. was collected from Spondias mombin (Anacardiaceae). On the other hand, tetranychid included Tetranychus urticae Koch on Terminalia catappa (Combretaceae), Euphorbia pulcherrima (Euphorbiaceae) and Enterolobium cyclocarpum (Mimosaceae). Tetranychus cinnabarinus (Boisduval) on Lycopersicon sp. (Solanaceae), Ipomoea sp., Convolvulus sp. (Convolvulaceae) and Leonotis nepetifolia (Lamiaceae). Tetranychus desertorum Banks on Parthenium hysterophorus (Asteraceae). Eutetranychus banksi (McGregor) on C. siamea, Chlorophora tinctoria (Moraceae), Dalechampia sp. (Euphobiaceae) and Malpighia glabra (Malpighiaceae). Eotetranychus cf. willamettei on Sterculia apetala (Sterculiaceae). Oligonychus biharensis (Hirst) on Clitoria sp. (Papilionaceae) and Ziziphus cyclocardia (Rhamnaceae). Oligonychus sp. on S. campanulata and Neotetranychus gloriosus Estebanes & Baker on Croton sp. (Euphorbiaceae). In this study, B. phoenicis is recorded for the first time on C. siamea, S. campanulata, Randia...


Los ácaros fitófagos de especies vegetales no cultivadas han sido poco estudiados en Venezuela. Desde marzo 2007 hasta noviembre del 2008, se realizaron muestreos para determinar la diversidad de ácaros fitófagos habitantes de diferentes taxa vegetales en los municipios Iribarren, Jiménez, Palavecino, Morán y Crespo en el estado Lara, Venezuela. En cada sitio de muestreo, se trazó una transecta de 500 m de longitud donde fueron muestreadas las plantas más frecuentes. En el campo, 15 hojas fueron examinadas para determinar la presencia de ácaros con el uso de una lupa de mano. En el laboratorio, el material vegetal fue examinado bajo aumento de una lupa estereoscopio para seleccionar las morfo-especies de tetraníquidos y tenuipálpidos. Se identificaron dos especies de Tenuipalpidae y ocho de Tetranychidae. Los ácaros tenuipálpidos identificados fueron Brevipalpus phoenicis (Geijskes) sobre Cassia siamea (Caesalpinaceae), Capparis linearis (Capparidaceae), Spathodea campanulata (Bignoniaceae), Randia sp. (Rubiaceae), Melicoccus bijugatus (Sapindaceae) y Tenuipalpus sp. fue colectado sobre Spondias mombin (Anacardiaceae). Por otra parte, las especies de tetraníquidos incluyeron a Tetranychus urticae Koch sobre Terminalia catappa (Combretaceae), Euphorbia pulcherrima (Euphorbiaceae) y Enterolobium cyclocarpum (Mimosaceae). Tetranychus cinnabarinus (Boisduval) sobre Lycopersicon sp. (Solanaceae), Ipomoea sp., Convolvulus sp. (Convolvulaceae) y Leonotis nepetifolia (Lamiaceae). Tetranychus desertorum Banks sobre Parthenium hysterophorus (Asteraceae). Eutetranychus banksi (McGregor) sobre C. siamea, Chlorophora tinctoria (Moraceae), Dalechampia sp. (Euphorbiaceae) y Malpighia glabra (Malpighiaceae). Eotetranychus cf. willamettei sobre Sterculia apetala (Sterculiaceae), Oligonychus biharensis (Hirst) sobre Clitoria sp. (Papilionaceae) y Ziziphus cyclocardia (Rhamnaceae). Oligonychus sp. sobre S. campanulata y Neotetranychus gloriosus Estebanes...

3.
Neotrop. entomol ; 37(4): 463-471, July-Aug. 2008. tab
Article in Portuguese | LILACS | ID: lil-492709

ABSTRACT

Foram realizadas coletas trimestrais em 2001 em três cultivos de seringueira no Noroeste do estado de São Paulo. Foram amostradas três seringueiras de cada local. Nas entrelinhas das seringueiras foram coletadas quatro espécies de euforbiáceas espontâneas: Chamaesyce hirta, C. hyssopifolia, Euphorbia heterophylla e Phyllanthus tenellus. Foram coletados 8.954 ácaros de 38 espécies, pertencentes a 31 gêneros de 11 famílias. Tydeidae e Phytoseiidae tiveram maior diversidade de espécies, 9 e 7, respectivamente. As famílias mais abundantes foram Eriophyidae (3.594), Tydeidae (2.825) e Tenuipalpidae (1.027). As espécies mais abundantes nas seringueiras foram: fitófagas - Calacarus heveae Feres, Tenuipalpus heveae Baker, Lorryia sp.2, Lorryia formosa Cooreman e Lorryia sp.1; predadoras - Zetzellia quasagistemas Hernandes & Feres, Pronematus sp., Iphiseiodes zuluagai Denmark & Muma e Euseius citrifolius Denmark & Muma. Entre as euforbiáceas espontâneas, encontrou-se maior abundância de ácaros predadores em C. hirta e E. heterophylla, destacando-se Pronematus sp. e E. citrifolius, sugerindo que estas plantas possam ser importantes na manutenção daqueles predadores nos plantios de seringueira. No entanto, plantas que podem abrigar predadores, mas que também exercem forte competição (nutrientes, água etc.) com a seringueira, não podem ser sugeridas para um programa de manejo de pragas. Estudos sobre competição entre a seringueira e plantas espontâneas precisam ser conduzidos para viabilizar programas eficientes de manejo ambiental, visando o controle dos ácaros-praga da seringueira.


Quarterly samples were done in 2001 on three rubber tree plantation in the northwest of the state of São Paulo. Three rubber trees of each locality were sampled. Between the rows of rubber tree four species of spontaneous euphorbiaceous were collected: Chamaesyce hirta, C. hyssopifolia, Euphorbia heterophylla and Phyllanthus tenellus. A total of 8.954 mites of 38 species, belonging to 31 genera of 11 families were collected. Tydeidae and Phytoseiidae had the highest diversity of species, 9 and 7, respectively. The most abundant families were Eriophyidae (3.594), Tydeidae (2.825) and Tenuipalpidae (1.027). The most abundant species on the rubber trees were: phytophagous - Calacarus heveae Feres, Tenuipalpus heveae Baker, Lorryia sp.2, Lorryia formosa Cooreman and Lorryia sp.1; predators - Zetzellia quasagistemas Hernandes & Feres, Pronematus sp., Iphiseiodes zuluagai Denmark & Muma and Euseius citrifolius Denmark & Muma. Among the spontaneous euphorbiaceous, predatory mites were abundantly found on C. hirta and E. heterophylla, mainly Pronematus sp. and E. citrifolius, suggesting that these plants could be important in the maintenance of these predators in the rubber tree cultivation areas. However, plants that can shelter predators and at the same time exert strong competition (nutrients, water etc) to rubber trees, can not be recommended for pest management programs. Studies about competition between rubber trees and spontaneous plants need to be conducted for feasible efficient programs of environmental management, aiming at the control of pest mites of rubber tree.


Subject(s)
Animals , Hevea/parasitology , Mites/classification , Acari/classification , Brazil , Euphorbia/parasitology , Euphorbiaceae/classification , Euphorbiaceae/parasitology , Pest Control, Biological , Population Density , Phyllanthus/parasitology
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